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# SHARPEN POWERED BY KIXOR HERBICIDE
- EPA Reg No: **7969-278**
- Registrant: BASF AGRICULTURAL SOLUTIONS US, LLC
- Signal word: Caution
- Active ingredients: Saflufenacil (29.74%)
- Label accepted: 2024-09-10
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/007969-00278-20240910.pdf
---
1
September 10, 2024
Craig D. Kleppe, PhD
Product Registration Manager
BASF Corporation
PO Box 13528
Research Triangle Park, NC 27709
Subject: PRIA Label Amendment New Use on Mint (IR-4)
Supplemental Label New Use on Mint (IR-4)
Label Amendment - Change CA State Required (CADPR) spray drift restrictions
Product Name: Sharpen Powered by KIXOR Herbicide
EPA Registration Number: 7969-278
Application Dates: December 15, 2022; March 11, 2024
Case Numbers: 482670; 483492; 557673
Dear Craig Kleppe:
The applications referred to above, submitted in connection with registration under the Federal
Insecticide, Fungicide, and Rodenticide Act (FIFRA), as amended, are acceptable under FIFRA section
3(c)(7)(B), subject to the following conditions:
1. You must submit and/or cite all data required for registration/reregistration/registration review
of your product under FIFRA when the Agency requires all registrants of similar products to
submit such data.
2. You are required to comply with the data requirements described in the generic data call-in
(GDCI) order identified below:
a. S
aflufenacil GDCI-11
8203
-18
37
Y
ou must comply with all of the data requirements within the established deadlines. If you have
questions about the GDCI Order listed above, you may contact the Chemical Review Manager in
the Pesticide Re-Evaluation Division:
http://iaspub.epa.gov/apex/pesticides/f?p=chemicalsearch:1
A stamped copy of your labeling is enclosed for your records. This labeling supersedes all previously
accepted labeling. You must submit one (1) copy of the final printed labeling before you release the
product for shipment with the new labeling. In accordance with 40 CFR 152.130(c), you may distribute
Page 2 of 2
EPA Reg. No. 7969-278
Case Nos. 482670; 483492; 557673
or sell this product under the previously approved labeling for 18 months from the date of this
letter. After 18 months, you may only distribute or sell this product if it bears this new revised labeling
or subsequently approved labeling. “To distribute or sell” is defined under FIFRA section 2(gg) and its
implementing regulation at 40 CFR 152.3.
Should you wish to add/retain a reference to the companys website on your label, then please be
aware that the website becomes labeling under FIFRA and is subject to review by the Agency. If the
website is false or misleading, the product would be misbranded and unlawful to sell or distribute
under FIFRA section 12(a)(1)(E). 40 CFR 156.10(a)(5) lists examples of statements EPA may consider
false or misleading. In addition, regardless of whether a website is referenced on your products label,
claims made on the website may not substantially differ from those claims approved through the
registration process. Therefore, should the Agency find or if it is brought to our attention that a
website contains false or misleading statements or claims substantially differing from the EPA
approved registration, the website will be referred to the EPAs Office of Enforcement and Compliance.
Your release for shipment of the product constitutes acceptance of these conditions. If you fail to
satisfy these data requirements, EPA will consider appropriate regulatory action including, among
other things, cancellation under FIFRA section 6(e).
If you have any questions, please contact Endia Blunt at blunt.endia@epa.gov or at 202-566-2505.
Sincerely,
Lindsay Roe, Chief
Herbicide Branch
Registration Division (7505T)
Office of Pesticide Programs
U.S. Environmental Protection Agency
Enclosure
Saflufenacil Group 14 Herbicide
For use in selected agricultural crops
Active Ingredient:
saflufenacil: N'-[2-chloro-4-fluoro-5-(3-methyl-2,6-dioxo-4-(trifluoromethyl)-3,
6-dihydro-1(2H)-pyrimidinyl)benzoyl]-N-isopropyl-N-methylsulfamide . . . . . . . . . 29 .74%
Other Ingredients: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 .26%
Total: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 .00%
Contains 2 .85 pounds active ingredient saflufenacil per gallon formulated as
a water-based suspension concentrate
EPA Reg. No. 7969-278 EPA Est. No.
KEEP OUT OF REACH OF CHILDREN
CAUTION/PRECAUCIÓN
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en
detalle . (If you do not understand the label, find someone to explain it to you in detail .)
See full label for complete Precautionary Statements, Directions For Use,
Conditions of Sale and Warranty, and state-specific crop and/or use site restrictions .
In case of an emergency endangering life or property involving this product,
call day or night 1-800-832-HELP (4357).
Net Contents:
BASF Corporation
26 Davis Drive, Research Triangle Park, NC 27709
09/10/2024
7969-278
2
Precautionary Statements
Hazards to Humans and Domestic Animals
CAUTION. Harmful if swallowed . Causes moderate eye
irritation . Avoid contact with eyes or clothing . Remove and
wash contaminated clothing before reuse .
Personal Protective Equipment (PPE)
Applicators and other handlers must wear:
• Long-sleeved shirt and long pants
• Shoes plus socks
• Waterproof gloves
• Protective eyewear such as face shield, goggles, or safe-
ty glasses
Follow the manufacturers instructions for cleaning and
maintaining PPE . If no such instructions for washables
exist, use detergent and hot water . Keep and wash PPE
separately from other laundry . Discard clothing and other
absorbent materials that have been drenched or heavily
contaminated with this products concentrate . DO NOT
reuse them .
Engineering Controls
When handlers use closed systems, enclosed cabs, or air -
craft in a manner that meets the requirements listed in the
Worker Protection Standard (WPS) for agricultural pesti-
cides [40 CFR 170 .607(d-f)], the handler PPE requirements
may be reduced or modified as specified in the WPS .
IMPORTANT: When reduced PPE is worn because a
closed system is being used, handlers must be provided
all PPE specified above for applicators and other
handlers and have such PPE immediately available for
use in an emergency, including a spill or equipment
breakdown .
USER SAFETY RECOMMENDATIONS
Users should:
• Wash hands before eating, drinking, chewing gum,
using tobacco, or using the toilet .
• Remove clothing/PPE immediately if pesticide gets
inside . Then wash thoroughly and put on clean
clothing .
• Remove PPE immediately after handling this product .
Wash the outside of gloves before removing . As soon
as possible, wash thoroughly and change into clean
clothing .
Environmental Hazards
For terrestrial uses, DO NOT apply directly to water, areas
where surface water is present, or intertidal areas below
the mean high water mark . DO NOT contaminate water
when disposing of equipment washwater or rinsate .
Groundwater Advisory. Saflufenacil has properties and
characteristics associated with chemicals detected in
groundwater . This chemical may leach into groundwater if
used in areas where soils are permeable, particularly
where the water table is shallow .
Surface Water Advisory. Saflufenacil may impact sur-
face water due to runoff of rainwater . This is especially true
for poorly draining soils and soils with shallow groundwa -
ter . This product is classified as having high potential for
reaching surface water via runoff for several weeks after
application . A level, well-maintained buffer strip between
areas to which this product is applied and surface water
features including ponds, streams, and springs will reduce
the potential loading of this chemical from runoff water and
sediment . Runoff of this product will be reduced by
avoiding application when rainfall is forecast to occur with -
in 48 hours .
FIRST AID
If swallowed
• Call a poison control center or doctor immediately for treatment advice .
• DO NOT induce vomiting unless told to do so by a poison control center or doctor .
• Have person sip a glass of water if able to swallow .
• DO NOT give anything by mouth to an unconscious person .
If in eyes
• Hold eyes open and rinse slowly and gently with water for 15 to 20 minutes .
• Remove contact lenses, if present, after first 5 minutes; then continue rinsing eyes .
• Call a poison control center for treatment advice .
If on skin or clothing
• Take off contaminated clothing .
• Rinse skin immediately with plenty of water for 15 to 20 minutes .
• Call a poison control center or doctor for treatment advice .
If inhaled
• Move person to fresh air .
• If person is not breathing, call 911 or an ambulance; then give artificial respiration, prefer-
ably by mouth to mouth, if possible .
• Call a poison control center or doctor for further treatment advice .
HOTLINE NUMBER
Have the product container or label with you when calling a poison control center or doctor or going for treatment .
You may also contact BASF Corporation for emergency medical treatment information at 1-800-832-HELP (4357) .
3
Endangered Species Protection
Requirements
This product may have effects on federally listed threat-
ened or endangered plant species or their critical habitat .
When using this product, you must follow the measures
contained in the Endangered Species Protection Bulletin
for the county or parish in which you are applying the
pesticide . To determine whether your county or parish
has a Bulletin, and to obtain that Bulletin, consult
http://www .epa .gov/espp/, or call 1-844-447-3813 no more
than 6 months before using this product . Applicators must
use Bulletins that are in effect in the month in which the
pesticide will be applied . New Bulletins will generally be
available from the above sources 6 months before their
effective dates .
Directions For Use
It is a violation of federal law to use this product in a man-
ner inconsistent with its labeling . This labeling must be in
the possession of the user at time of herbicide application .
DO NOT apply this product in a way that will contact
workers or other persons, either directly or through drift .
Only protected handlers may be in the area during applica -
tion . For any requirements specific to your state or tribe,
consult the agency responsible for pesticide regulation .
Observe all precautions and limitations in this label and the
labels of products used in combination with Sharpen ®
Powered by Kixor® herbicide (henceforth in this label
referred to as Sharpen or Sharpen herbicide ) . The use
of Sharpen not consistent with this label can result in inju -
ry to crops, animals or persons . Keep containers closed to
avoid spills and contamination .
Unless otherwise directed in supplemental labeling, all
applicable directions, restrictions, precautions, and
Conditions of Sale and Warranty are to be followed .
BASF Corporation does not recommend or authorize the
use of this product in manufacturing, processing or pre -
paring custom blends with other products for application in
crops .
AGRICULTURAL USE REQUIREMENTS
Use this product only in accordance with its labeling and
with the Worker Protection Standard, 40 CFR Part 170 .
This standard contains requirements for the protection
of agricultural workers on farms, forests, nurseries and
greenhouses, and handlers of agricultural pesticides . It
contains requirements for training, decontamination,
notification, and emergency assistance . It also contains
specific instructions and exceptions pertaining to the
statements on this label about personal protective
equipment (PPE) and restricted-entry interval . The
requirements in this box only apply to uses of this prod-
uct that are covered by the Worker Protection Standard .
DO NOT enter or allow worker entry into treated areas
during the restricted-entry interval (REI) of 12 hours .
EXCEPTION: If the product is soil injected or soil incor-
porated, the Worker Protection Standard, under certain
circumstances, allows workers to enter the treated area
if there will be no contact with anything that has been
treated .
PPE required for early entry to treated areas that is per-
mitted under the Worker Protection Standard and that
involves contact with anything that has been treated,
including plants, soil, or water, is:
• Coveralls
• Waterproof gloves
• Shoes plus socks
• Protective eyewear
NONAGRICULTURAL USE REQUIREMENTS
The requirements in this box apply to uses of this prod-
uct that are NOT within the scope of the Worker
Protection Standard for agricultural pesticides (40 CFR
Part 170) . The WPS applies when this product is used to
produce agricultural plants on farms, forests, nurseries,
or greenhouses .
DO NOT enter treated areas without protective clothing
until sprays have dried .
4
STORAGE AND DISPOSAL
DO NOT contaminate water, food, or feed by storage or
disposal . Open dumping is prohibited .
Pesticide Storage
DO NOT use or store near heat or open flame . Store in
original container in a well-ventilated area separately
from fertilizer, feed, or foodstuffs . Avoid cross-
contamination with other pesticides .
Pesticide Disposal
Wastes resulting from this product must be disposed of
on-site or at an approved waste disposal facility . Improp-
er disposal of excess pesticide, spray mix, or rinsate is a
violation of federal law . If these wastes cannot be dis-
posed of according to label instructions, contact the
state agency responsible for pesticide regulation or the
Hazardous Waste representative at the nearest EPA
Regional Office for guidance .
Container Handling
Nonrefillable Container. DO NOT reuse or refill this
container . Triple rinse or pressure rinse container (or
equivalent) promptly after emptying; then offer for recy -
cling, if available, or reconditioning, if appropriate, or
puncture and dispose of in a sanitary landfill, or by other
procedures approved by state and local authorities .
Triple rinse containers small enough to shake
(capacity ≤ 5 gallons) as follows: Empty the remain -
ing contents into application equipment or a mix tank
and drain for 10 seconds after the flow begins to drip . Fill
the container 1/4 full with water and recap . Shake for
10 seconds . Pour rinsate into application equipment or a
mix tank, or store rinsate for later use or disposal . Drain
for 10 seconds after the flow begins to drip . Repeat this
procedure two more times .
Pressure rinse as follows: Empty the remaining
contents into application equipment or mix tank and
continue to drain for 10 seconds after the flow begins to
drip . Hold container upside down over application
equipment or mix tank, or collect rinsate for later use or
disposal . Insert pressure rinsing nozzle in the side of the
container and rinse at about 40 PSI for at least 30 sec -
onds . Drain for 10 seconds after the flow begins to drip .
In Case of Emergency
In case of large-scale spill of this product, call:
• CHEMTREC 1-800-424-9300
• BASF Corporation 1-800-832-HELP (4357)
In case of medical emergency regarding this product, call:
• Your local doctor for immediate treatment
• Your local poison control center (hospital)
• BASF Corporation 1-800-832-HELP (4357)
Steps to take if material is released or spilled:
• Dike and contain the spill with inert material (sand, earth,
etc .) and transfer liquid and solid diking material to sepa -
rate containers for disposal .
• Remove contaminated clothing and wash affected skin
areas with soap and water .
• Wash clothing before reuse .
• Keep the spill out of all sewers and open bodies of water .
Product Information
Sharpen® herbicide provides both contact burndown
and rate-dependent residual preemergence broadleaf
weed control (refer to Table 1 and Table 2 for lists,
respectively) . It can be used in select field and row crops
[alfalfa, chickpea (garbanzo beans), corn (field, seed,
silage, sweet, and popcorn), cotton, edible bean, edible
pea, field pea, forage grasses (cool-season and warm-
season), grass grown for seed, lentils, mint (peppermint
and spearmint), rice, small grains, sorghum, southern pea,
soybean, vegetable soybean (edamame)], fallow and post-
harvest croplands, pasture and rangeland, and in
noncropland areas . Sharpen does not control grass
weeds and must be used sequentially or tank mixed with a
grass herbicide for a complete weed control program .
Refer to Crop-specific Information section for recom -
mendations on herbicide tank mixtures or sequential
programs .
Make burndown applications of Sharpen when broadleaf
weeds are small and actively growing . An adjuvant is
required with Sharpen for optimum burndown activity
(refer to Additives section for details) . Burndown activity
may be slowed or reduced under cloudy and/or foggy or
cooler weather conditions, or when weeds are growing in
drought or other stress conditions . When targeting dense
weed populations and/or larger broadleaf weeds, use a
higher application rate within an application rate range
and/or higher spray volumes . Angling nozzles forward (to
45 degrees) may improve penetration of denser weed
canopies .
Residual preemergence applications of Sharpen must be
activated by at least 1/2 inch of rainfall or sprinkler irrigation
before weed seedling emergence . When Sharpen is not
activated, a labeled postemergence herbicide or cultivation
may be needed to control weed escapes .
Sharpen may also be used for harvest aid/desiccation in
select field and row crops (barley, wheat, and triticale; chia;
field corn; dry edible beans; dry peas; oilseeds canola
(rapeseed) subgroup 20A; oilseeds cottonseed subgroup
20C; oilseeds sunflower subgroup 20B; and soybean) .
Make harvest aid/desiccation applications when crops
have reached physiological maturity or according to
Extension Service recommendations in the use area .
Sharpen is rainfast 1 hour after application . Burndown
activity may be reduced if rain or irrigation occurs within
1 hour of application .
5
Table 1. Broadleaf Weeds Controlled by a Burndown Application of Sharpen ® herbicide
Common Name Scientific Name
C = Control
S = Suppression
Maximum Height
or Diameter
(inches)
Amaranth, Palmer Amaranthus palmeri C 6
Bedstraw, catchweed Galium aparine C 3
Beggarticks, hairy Bidens pilosa C 6
Beggarweed, Florida Desmodium tortuosum C 6
Bindweed, field Convolvulus arvensis S1 6
Buckwheat, wild Polygonum convolvulus C 3
Canola, volunteer (rapeseed) Brassica spp . C 6
Carpetweed Mollugo verticillata C 6
Chickweed, common Stellaria media S 3
Cocklebur, common Xanthium strumarium C 6
Cotton, volunteer2 Gossypium hirsutum C ≤ 6 leaves
Cowcockle Vaccaria pyramidata C 4
Dandelion Taraxacum officinale S1 6
Eveningprimrose, cutleaf Oenothera laciniata C 4
Falseflax, smallseed Camelina microcarpa C 4
Fiddleneck[2] Amsinckia menziesii C 3
Filaree, redstem Erodium cicutarium S 3
Fleabane, hairy Conyza bonariensis C 6
Flixweed Descurainia sophia C 6
Groundcherry, cutleaf Physalis angulata C 6
Groundsel, common Senecio vulgaris C 4
Hawksbeard, narrowleaf2 Crepis tectorum C 6
Hemlock, poison2 Conium maculatum C 6
Henbit Lamium amplexicaule S 3
Horseweed (marestail) Conyza canadensis C 6
Knotweed, prostrate Polygonum aviculare C 3
Kochia Kochia scoparia C 1 to 3
Suppression of
button/puffball stage
at < 1-inch tall
Ladysthumb Polygonum persicaria C 6
Lambsquarters, common Chenopodium album C 6
Lambsquarters, narrowleaf Chenopodium pratericola C 6
Lettuce, prickly Lactuca serriola C 6
Mallow, common Malva neglecta C 6
Mallow, little (cheeseweed) Malva parviflora C 6
Mallow, Venice Hibiscus trionum C 6
Marestail (horseweed) Conyza canadensis C 6
Marshelder[2] Iva xanthifolia C 4
Morningglory, entireleaf Ipomoea hederacea var . integriuscula C 6
Morningglory, ivyleaf Ipomoea hederacea C 6
Morningglory, palmleaf Ipomoea wrightii C 6
Morningglory, pitted Ipomoea lacunosa C 6
Morningglory, tall Ipomoea purpurea C 6
(continued)
6
Table 1. Broadleaf Weeds Controlled by a Burndown Application of Sharpen ® herbicide (continued)
Common Name Scientific Name
C = Control
S = Suppression
Maximum Height
or Diameter
(inches)
Mustard, black Brassica nigra C 6
Mustard, tumble Sisymbrium altissimum C 6
Mustard, wild Sinapis arvensis C 6
Needles, Spanish2 Bidens pilosa C 6
Nettle, burning Urtica urens C 4
Nightshade, black Solanum nigrum C 6
Nightshade, cutleaf Solanum triflorum C 6
Nightshade, Eastern black Solanum ptycanthum C 6
Nightshade, hairy Solanum saccharoides C 6
Parthenium Parthenium hysterophorus C 6
Pennycress, field Thlaspi arvense C 6
Pigweed, prostrate Amaranthus blitoides C 6
Pigweed, redroot Amaranthus retroflexus C 6
Pigweed, smooth Amaranthus hybridus C 6
Puncturevine Tribulus terrestris C 6
Purslane, common Portulaca oleracea C 3
Pusley, Florida Richardia scabra S 3
Ragweed, common3 Ambrosia artemisiifolia C 6
Ragweed, giant Ambrosia trifida C 6
Rocket, London2 Sisymbrium irio C 6
Sesbania, hemp Sesbania exaltata C 4
Shepherds-purse Capsella bursa-pastoris C 6
Sida, prickly Sida spinosa C 6
Smartweed, Pennsylvania Polygonum pensylvanicum C 6
Sowthistle, annual Sonchus oleraceus C 6
Sowthistle, spiny Sonchus asper C 6
Sunflower, common Helianthus annuus C 6
Tansymustard, pinnate Descurainia pinnata C 6
Texasweed Caperonia palustris C 6
Thistle, Canada Cirsium arvense S1 6
Thistle, Russian Salsola kali C 3
Velvetleaf Abutilon theophrasti C 6
Waterhemp3 Amaranthus tuberculatus C 4
Willowweed Epilobium adenocaulon C 3
Wooly croton[2] Croton capitatus C 4
1 Control of seedling stage and suppression of perennial growth stage .
2 Not controlled in California
3 Populations of noted weeds exist that are known to be resistant to burndown applications of Group 14 herbicides and will not be controlled by her -
bicides like Sharpen . See the Resistance Management section for practices to manage and minimize the impact of resistant weeds (e .g . tank
mixes or alternation with other herbicide modes of action, crop rotation, and mechanical control) .
[Optional text in brackets]
7
Table 2. Broadleaf Weeds Controlled with a Residual Preemergence Application of Sharpen ® herbicide
Common Name Scientific Name
C = Control
S = Suppression1
Amaranth, Palmer Amaranthus palmeri C
Amaranth, Powell Amaranthus powellii C
Beggarweed, Florida Desmodium tortuosum C
Buckwheat, wild Polygonum convolvulus C
Burcucumber Sicyos angulatus S
Canola, volunteer (rapeseed)2, all types Brassica spp . C
Carpetweed Mollugo verticillata C
Chickweed, common Stellaria media C
Cocklebur, common Xanthium strumarium C
Copperleaf, Virginia Acalypha virginica C
Galinsoga, smallflower Galinsoga parviflora C
Groundcherry, cutleaf Physalis angulata C
Horseweed (marestail) Conyza canadensis C
Jimsonweed Datura stramonium C
Kochia Kochia scoparia C
Ladysthumb Polygonum persicaria C
Lambsquarters, common Chenopodium album C
Mallow, Venice Hibiscus trionum C
Marestail (horseweed) Conyza canadensis C
Morningglory, entireleaf Ipomoea hederacea var . integriuscula C
Morningglory, ivyleaf Ipomoea hederacea C
Morningglory, pitted Ipomoea lacunosa C
Morningglory, tall Ipomoea purpurea C
Mustard, wild Sinapis arvensis C
Nightshade, black Solanum nigrum C
Pennycress, field Thlaspi arvense C
Pigweed, prostrate Amaranthus blitoides C
Pigweed, redroot Amaranthus retroflexus C
Pigweed, smooth Amaranthus hybridus C
Pigweed, tumble Amaranthus albus C
Puncturevine Tribulus terrestris S
Purslane, common Portulaca oleracea C
Pusley, Florida Richardia scabra S
Ragweed, common Ambrosia artemisiifolia C
Ragweed, giant Ambrosia trifida C
Sida, prickly Sida spinosa C
Smartweed, Pennsylvania Polygonum pensylvanicum C
Starbur, bristly Acanthospermum hispidum C
Sunflower, common Helianthus annuus C
Texasweed Caperonia palustris C
Thistle, Russian Salsola kali C
Velvetleaf Abutilon theophrasti C
Waterhemp Amaranthus tuberculatus C
1 Use Sharpen in tank mixes or sequential applications with other labeled herbicides that provide additional control of noted weeds .
2 Not controlled in California
8
Mode of Action
Sharpen® herbicide is a potent inhibitor of
protoporphyrinogen- oxidase belonging to herbicide mode
of action Group 14 (WSSA) . Sharpen is rapidly absorbed
by roots and foliage . Following inhibition of protoporphyrinogen-
oxidase, plant death is the result of membrane damage .
Under active growing conditions, susceptible emerged
weeds usually develop chlorotic and necrotic injury symp -
toms within hours and die within a few days . Susceptible
emerging weed seedlings usually die as they reach the soil
surface or shortly after emergence .
Herbicide Resistance Management
While weed resistance to Group 14 herbicides are rela -
tively infrequent, populations of resistant biotypes are
known to exist . The frequency of resistant biotypes may
increase if Group 14 herbicides are used repeatedly in the
same field or in successive years as the primary control of
the targeted species . If resistant biotypes dominate the
weed population, it may result in partial or total loss of
control by other Group 14 herbicides . Weeds resistant to
Group 14 herbicides may be effectively managed using
herbicide(s) from a different group .
To aid in the prevention of developing resistant weeds, the
following herbicide resistance management principles
should be followed where practicable:
• Resistance management should be part of a diversified
weed control strategy that integrates chemical, cultural,
and mechanical (tillage) control tactics . Cultural control
tactics include crop rotation, proper fertilizer placement,
and optimum seeding rate/row spacing . Start with clean
fields using tillage or an effective burndown herbicide
program . These practices encourage crop growth and
improve competitiveness against weeds .
• Clean equipment before moving to a different field to
avoid spread of resistant weeds .
• Scout fields before application to ensure herbicides and
rates will be appropriate for the weeds species and weed
sizes present .
• Always follow labeled application rate and weed growth
stage specifications .
• Use sequential programs with preemergence herbicides
that provide soil residual control of weeds to reduce early
season weed competition and allow for timely in-crop
postemergence herbicide applications .
• DO NOT rely on a single herbicide site of action for weed
control during the growing season .
• Avoid application of herbicides with the same site of
action more than twice a season .
• Use tank mixes or premixes with other herbicides pos -
sessing different sites of action that are also effective on
the target weeds .
• Scout fields after herbicide application to identify areas
where weed control was ineffective .
• Control weed escapes with herbicides possessing a dif -
ferent site of action or use a mechanical control
measure . Weed escapes should not be allowed to repro-
duce by seed or to proliferate vegetatively .
• Contact your Sharpen supplier and/or your local BASF
representative to report weed escapes .
• Consult your local BASF representative, local or state
cooperative extension service, professional consultants
or crop advisors, or other qualified authority to determine
appropriate actions if you suspect resistant weeds .
• Suspected herbicide-resistance weeds may be identified
by these indicators:
- failure to control a weed species normally controlled by
the herbicide at the dose applied, especially if control is
achieved on adjacent weeds;
- a spreading patch on non-controlled plants of a partic -
ular weed species; or
- surviving plants mixed with controlled individuals of the
same species .
Crop Tolerance
Crops listed on this label are tolerant to Sharpen when
applied according to label directions and under normal
environmental conditions . Crop injury may occur under
stressful growing conditions (e .g . low soil fertility, seedling
disease, extreme hot or cold weather, excessive moisture,
high soil pH, high soil salt concentration, or drought) .
Severe crop injury will result if Sharpen is applied
postemergence (over the top) to any crop (except alfalfa,
forage grasses, grass grown for seed, and rice) .
Application Instructions
Apply Sharpen only before crop emerg ence, except for
harvest aid/desiccation uses and postemergence in alfalfa,
forage grasses, grass grown for seed, and rice .
Application Rates
Application rates of Sharpen may vary depending on soil
texture and organic matter . Refer to Table 3 for soil texture
groups used in this label .
Table 3. Soil Texture Groups
Coarse Medium Fine
Sand
Loamy sand
Sandy loam
Silt
Silt loam
Loam
Sandy clay loam
Sandy clay
Silty clay
Silty clay loam
Clay loam
Clay
Refer to the Crop-specific Information section for spe-
cific application rate, timing, and restrictions and limitations
by crop and use pattern .
9
Table 4. Use Rate Equivalency
Sharpen® herbicide
Use Rate
(fl ozs/A)
Amount of
Saflufenacil
(lb ai/A)
0 .5 0 .011
0 .75 0 .016
1 .0 0 .022
1 .5 0 .034
2 .0 0 .044
2 .5 0 .056
3 .0 0 .067
3 .5 0 .078
4 .0 0 .089
5 .0 0 .111
6 .0 0 .134
In California, DO NOT apply more than 2 .0 fl ozs/A of
Sharpen in a single application .
Application Methods and Equipment
Sharpen may be applied by ground or air . Thorough spray
coverage is required for optimum broadleaf weed control
and can be improved with proper adjuvant, nozzle, and
spray volume selection .
Use and configure application equipment for adequate
spray volume, accurate and uniform distribution of spray
droplets over the treated area, and to avoid spray drift to
nontarget areas . Adjust equipment to maintain continuous
agitation during spraying with good mechanical or bypass
agitation . Avoid overlaps that will increase rates above use
rates specified in this label .
Sharpen may be applied using water or sprayable fluid
nitrogen fertilizer solutions as the spray carrier . Additionally,
Sharpen may be impregnated on and applied with dry
bulk fertilizer .
Aerial Application Requirements -
Helicopter
Water Volume. Use 15 or more gallons of water per acre .
DO NOT apply more than 2 .0 fl ozs/A of Sharpen
(0 .044 lb ai/A of saflufenacil) aerially with helicopter in
California .
Applicators must follow these requirements to reduce the
potential of spray drift to nontarget areas from aerial appli -
cation with helicopter:
1 . The distance of the outermost nozzles on the boom
must not exceed 75 to 80% of rotor blade diameter .
2 . Use Accu-FloTM .028 nozzles or larger . DO NOT use
nozzles producing a smaller droplet size than
Accu-Flo  .028 . In California, applicators must select
nozzles and pressure that deliver ultra-coarse or larger
droplets in accordance with American Society of
Agricultural & Biological Engineers Standard 641
(ASABE S641) .
3 . Orient nozzles so spray is released parallel to the
airstream .
4 . Without compromising aircraft safety, applications
should be made at a height of 10 feet or less above the
target vegetative canopy .
5 . DO NOT apply when wind speed is greater than
10 miles per hour, during periods of temperature inver -
sions or stable atmospheric conditions .
6 . Avoid potential adverse effects to nontarget areas by
maintaining a 50-foot buffer (90-feet in California)
between the point of direct application and the closest
downwind edge of sensitive terrestrial habitats (grass-
lands, forested areas, shelter belts, woodlots,
hedgerows, riparian areas, shrub lands, and crop lands) .
Aerial Application Requirements -
Fixed-wing Aircraft
Water Volume. Use 3 or more gallons of water per acre
for weed control application . Use a minimum of 5 gallons
of water per acre for harvest aid/desiccation application .
DO NOT apply aerially with fixed-wing aircraft in California .
Applicators must follow these requirements to reduce the
potential of spray drift to nontarget areas from aerial
application:
1 . The distance of the outermost nozzles on the boom
must not exceed 3/4 the length of the fixed wingspan .
2 . Use low-drift nozzles (straight-stream nozzles, D-8 or
larger) . DO NOT use nozzles producing a mist droplet
spray .
3 . Nozzles must always point backward parallel with the
airstream and never point downward more than
45 degrees .
4 . Without compromising aircraft safety, application should
be made at a height of 10 feet or less above the crop
canopy or tallest plants .
5 . DO NOT apply when wind speed is greater than
10 miles per hour, during periods of temperature inver -
sions or stable atmospheric conditions .
6 . Avoid potential adverse effects to nontarget areas by
maintaining a 160-foot buffer between the point of direct
application and the closest downwind edge of sensi-
tive terrestrial habitats (grasslands, forested areas,
shelter belts, woodlots, hedgerows, riparian areas,
shrub lands, and crop lands) .
Ground Application Requirements
Spray Carrier Volume. Use 5 or more gallons of water
per treated acre or 20 or more gallons of sprayable fluid
nitrogen fertilizer per treated acre for weed control applica -
tion . Thorough spray coverage is required for control of
emerged broadleaf weeds . High populations and/or
variations in size can prevent adequate spray coverage .
Controlling fall-germinated weeds in the spring
(e .g . horseweed/marestail) also requires thorough spray
coverage . Use higher spray volumes (e .g . 15 to 20 gallons
of water per acre) in these situations to increase spray
coverage and optimize burndown activity . Use a minimum
of 5 to 10 gallons of water per acre for harvest aid/
desiccation application .
10
Applicators must follow these requirements to reduce the
potential of spray drift to nontarget areas from ground
application:
1 . Apply this product using nozzles which deliver
medium-to-coarse spray droplets as defined by
ASABE standard S-572 and as shown in nozzle manu-
facturers catalogs . Flat-fan nozzles are recommended
for burndown applications while flood-jet type nozzles
are recommended for residual soil surface application .
Nozzles that deliver coarse spray droplets may be used
to reduce spray drift provided spray volume per acre
(GPA) is increased to maintain coverage of target (i .e .
weeds or soil surface) . DO NOT use nozzles that pro-
duce fine (e .g . cone) spray droplets . In California,
nozzles must be affixed to spray no higher than 20 inch -
es above the spray target (e .g . top of weed foliage) .
2 . Apply this product only when the potential for drift to
adjacent nontarget areas is minimal (e .g . when the wind
is 10 MPH or less and is blowing away from sensitive
areas) . DO NOT apply during periods of temperature
inversions or stable atmospheric conditions .
3 . Avoid potential adverse effects to nontarget areas by
maintaining a 75-foot buffer (120-foot in California)
between the application area and the closest down-
wind edge of sensitive terrestrial habitats (grasslands,
forested areas, shelter belts, woodlots, hedgerows,
riparian areas, shrub lands, and crop lands) .
Ground Application (dry bulk fertilizer)
Sharpen® herbicide may be impregnated or coated onto
dry bulk granular fertilizer carriers for residual soil surface
application . Impregnation or coating may be conducted by
in-plant bulk or on-board systems . Perform the mixing
operation in well-ventilated areas .
Addition of a drying agent may be necessary if the fertilizer
and herbicide blend is too wet for uniform application
because of high humidity, high urea concentration, or low
fertilizer use rate . Slowly add the drying agent to the blend
until a flowable mixture is obtained . Drying agents are not
recommended for use with on-board impregnation
systems .
Under some conditions, fertilizer impregnated with
Sharpen may clog air tubes or deflector plates on pneu-
matic application systems . Mineral oil may be added to
Sharpen before blending with fertilizer to reduce plugging .
DO NOT use drying agents when mineral oil is used . To
avoid separation of Sharpen and mineral oil mixes in cold
temperatures, keep mixture heated or agitate before
blending with fertilizer . Mineral oil may be used with
in-plant blending stations or on-board injection systems .
Generally, fertilizer application rates of at least 200 lbs to
700 lbs per acre of herbicide and fertilizer blend provide
adequate distribution or coverage of Sharpen across the
soil surface . Refer to the Crop-specific Information
section in this label for use rates of Sharpen in each crop
to be applied on per acre basis when impregnated with
fertilizer to create the dry bulk fertilizer blend for applica -
tion . Application must be made uniformly to the soil to
prevent possible crop injury and offer satisfactory weed
control . Impregnated fertilizer spread at half rate and over-
lapped for a full rate offers a more uniform distribution . A
shallow (less than 2 inches) incorporation is desirable for
improved weed control . Deeper incorporation dilutes the
herbicide layer near the soil surface and may result in
unsatisfactory weed control .
To calculate the herbicide rate when using dry bulk fertiliz-
er application:
fl ozs herbicide per acre x 2000 = fl ozs herbicide
per ton of fertilizerpounds fertilizer per acre
Cleaning Spray Equipment
Clean application equipment thoroughly by using a strong
detergent or commercial sprayer cleaner according to the
manufacturers directions, followed by triple rinsing the
equipment before and after applying this product .
Spray Drift Management
It is the responsibility of the applicator to avoid spray drift
at the application site, especially onto nontarget areas . The
interaction of many equipment-related and weather-related
factors determines the potential for spray drift . The appli-
cator and the grower are responsible for considering all
these factors when making decisions .
The applicator should be familiar with and take into
account the information covered in the following spray drift
reduction advisory information .
Controlling Droplet Size. The most effective way to
reduce drift potential is to apply the largest droplets that
provide sufficient coverage and control .
Volume. Use high flow rate nozzles to apply the highest
practical spray volume . Nozzles with higher rated flows
produce larger droplets .
Pressure. DO NOT exceed the nozzle manufacturers
specified pressures . For many nozzle types, lower pres-
sure produces larger droplets . When higher flow rates are
needed, use higher flow rate nozzles instead of increasing
pressure .
Number of Nozzles. Use the minimum number of noz-
zles that provide uniform coverage .
Nozzle Type. Use a nozzle type designed for the intended
application . With most nozzle types, narrower spray angles
produce larger droplets .
Swath Adjustment. When applications are made with a
crosswind, the swath will be displaced downwind . There-
fore, on the upwind and downwind edges of the field, the
applicator must compensate for this displacement by
adjusting the path of the application equipment (e .g . air-
craft, ground) upwind . Swath adjustment distance should
increase with increasing drift potential (higher wind, smaller
droplets, etc .) .
Wind. Drift potential is lowest between wind speeds of
3 to 10 mph . However, many factors, including droplet size
and equipment type, determine drift potential at any given
11
speed . If applying at wind speeds less than 3 mph, the
applicator must determine if:
1 . Conditions of temperature inversion exist, or
2 . Stable atmospheric conditions exist at or below nozzle
height .
DO NOT make applications into areas of temperature
inversions or stable atmospheric conditions .
NOTE: Local terrain can influence wind patterns . Every
applicator should be familiar with local wind patterns and
how they affect spray drift .
Wind Erosion. Avoid treating powdery, dry or light sandy
soils when conditions are favorable for wind erosion .
Under these conditions, the soil surface should first be set -
tled by rainfall or irrigation .
Additives
For optimum burndown or harvest aid/desiccation activity
with Sharpen® herbicide, an adjuvant system must be
used that includes the following:
Adjuvant Rate
methylated seed oil1 (MSO) 1 gal/100 gals2 (1% v/v)
PLUS PLUS
ammonium sulfate (AMS)
or
urea ammonium nitrate (UAN)
8 .5 to 17 lbs/100 gals
(1% to 2% w/v)
or
1 .25 to 2 .5 gals/100 gals
(1 .25% to 2 .5% v/v)
1 MSO-based adjuvant MUST contain at least 60% methylated seed oil .
Poor performance may occur with adjuvants containing less than 60%
methylated seed oil .
2 DO NOT use less than 1 pint/A of MSO with low-volume (less than
12 .5 gallons per acre) aerial or ground application .
Refer to the Crop- specific Information section for spe-
cific adjuvant requirements for certain crop uses .
Use of AMS fertilizer is highly recommended when mixing
Sharpen with glyphosate-based herbicides .
DO NOT use nonionic surfactant (NIS) as a substitute for
MSO, or poor performance on broadleaf weeds or for des -
iccation will occur .
When an adjuvant is to be used with this product, BASF
recommends the use of a Chemical Producers and Dis -
tributors Association (CPDA) certified adjuvant .
DO NOT add acidifying agents to the spray tank when
applying Sharpen .
Tank Mixing Information
It is the pesticide users responsibility to ensure that all
products in the mixtures are registered for the intended
use . Read and follow the applicable restrictions and limita -
tions and directions for use on all product labels involved in
tank mixing . Users must follow the most restrictive direc-
tions for use and precautionary statements of each
product in the tank mixture .
Sharpen may be tank mixed or applied sequentially with
other herbicide products registered for use in any labeled
crop found in this label for a broader spectrum of burndown
control of emerged weeds and/or residual weed control .
Refer to the tank mix product labels to confirm that the
respective tank mix products are registered for use on the
labeled crop . Read and follow tank mix product labels for
application instructions, use restrictions and precautions,
and rotational cropping guidance .
Tank mixes with contact herbicides (e .g . carfentrazone,
paraquat) may reduce the burndown activity of Sharpen .
Compatibility Test for Mix Components
Before mixing components, always perform a compatibility
jar test .
1 . For 20 gallons per acre spray volume, use 3 .3 cups
(800 mL) of water . For other spray volumes, adjust rates
accordingly . Only use water from the intended source at
the source temperature .
2 . Add components in the sequence indicated in Mixing
Order using 2 teaspoons for each pound or 1 teaspoon
for each pint of label rate per acre .
3 . Always cap the jar and invert 10 cycles between com-
ponent additions .
4 . When the components have all been added to the jar,
let the solution stand for 15 minutes .
5 . Evaluate the solution for uniformity and stability . The
spray solution should not have free oil on the surface, or
fine particles that precipitate to the bottom, or thick
(clabbered) texture . If the spray solution is not compati-
ble, repeat the compatibility test with the addition of a
suitable compatibility agent . If the solution is then com-
patible, use the compatibility agent as directed on its
label . If the solution is still incompatible, DO NOT mix
the ingredients in the same tank .
Mixing Order
Maintain agitation throughout mixing and application until
spraying is completed .
1 . Water - Fill tank 1/2 to 3/4 full with clean water and start
agitation .
2 . Inductor - If an inductor is used, rinse it thoroughly
after each component has been added .
3 . Products in PVA bags - Place any product contained in
water-soluble PVA bags into the mixing tank . Wait until all
water-soluble PVA bags have fully dissolved and the prod-
uct is evenly mixed in the spray tank before continuing .
4 . Water-soluble additives (including dry and liquid fer-
tilizers AMS or UAN)
5 . Water-dispersible products (dry flowables, wettable
powders, suspension concentrates, or suspo-emulsions)
6 . Water-soluble products
7 . Emulsifiable concentrates (including MSO adjuvants)
8 . Remaining quantity of water
If the spray mixture is allowed to settle for any period of
time, thorough agitation is essential to resuspend the mix-
ture before spraying is resumed . Continue agitation while
spraying .
12
Use Restrictions
• Maximum seasonal use rate - Refer to Crop- specific Information section for maximum cropping seasonal appli -
cation use rates for each crop and use pattern . A cropping season is defined as the period following harvest of the
preceding crop through the harvest of the planned or current crop .
• Except for labeled harvest aid/desiccation uses and postemergence uses in alfalfa, forage grasses, grass grown for
seed, and rice, DO NOT apply Sharpen ® herbicide after crop emergence or severe crop injury will occur .
• DO NOT contaminate irrigation ditches or water used for domestic purposes .
• DO NOT apply Sharpen through any type of irrigation system (e .g . chemigation) .
• Sharpen is not for sale, distribution, or use in Nassau and Suffolk counties in New York State.
Crop Rotation and Emergency Replanting Intervals
Refer to Table 5 for the proper interval between Sharpen application and planting of rotational crops or replanting after
crop failure (because of environmental factors including drought, frost, or hail, etc .) . Determine the rotational crop interval
for tank mix products and use the most restrictive interval of all products applied .
Table 5. Rotational Crop Planting and Emergency Replanting Intervals by Sharpen ® herbicide Application
Rate
Crop
Sharpen Rate
(fl ozs/A)
1 .0 2 .0 3 .0 4 .0 5 .0 6 .0
Rotational Crop Interval
(months after application)1
Alfalfa 4 5 6 7 8 9
Corn 0 0 0 0 0 0
Corn, sweet 0 .5 1 2 3 4 4
Sorghum 0 0 0 0 1 1
Small grains2 0 0 0 0 3 3
Rice 0 0 0 0 4 4
Chickpea 0 0 2* 4 6 6
Edible pea 0 1 3 4 6 6
Field pea, dry 0 0 2 4 6 6
Edible bean3 0 1 3 4 6 6
Grass (forage, seed) Establishment 0 0 0 0 1 1
Soybean4 0 to 1 1 to 1 .5 2 to 3 4 6 6
Soybean4, Kixor® Selected 0 0 2 to 3 4 6 6
Lentil 0 1 3 4 6 6
Cotton4 1 .5 3 4 6 6 9
Citrus fruit trees 1 1 4 4 4 4
Fig trees 3 3 4 4 4 4
Nut trees 3 3 4 4 4 4
Olive trees 3 3 4 4 4 4
Pomegranate trees 3 3 4 4 4 4
Pome fruit trees 3 3 4 4 4 4
Stone fruit trees 3 3 4 4 4 4
Sugarbeet 4 5 6 7 8 9
Sugarcane 4 4 6 7 8 9
(continued)
13
Table 5. Rotational Crop Planting and Emergency Replanting Intervals by Sharpen ® herbicide Application
Rate (continued)
Crop
Sharpen Rate
(fl ozs/A)
1 .0 2 .0 3 .0 4 .0 5 .0 6 .0
Rotational Crop Interval
(months after application)1
Sunflower 4 5 6 7 8 9
Cover crops (winter, spring)** 1 2 2 4 4 4
Other crops 4 5 6 7 8 9
1 DO NOT include time when the soil is frozen .
2 Small grains are defined in Crop-specific Information section of this label . For other small grains, use the rotational crop interval for Other Crops .
3 Edible bean refers to blackeyed pea, crowder pea, cowpea, southern pea . Use the Other Crops rotational crop planting interval for beans not
specifically listed in this table .
4 The planting interval for these crops and rates is further defined in the respective Crop-specific Information section of this label . Use the lon-
ger interval within listed ranges for indicated crops grown on coarse-texture soils with organic matter less than 2 .0% .
* Interval is 0 months in Idaho, Oregon, and Washington .
** Cover crops (winter, spring) may be planted after application of Sharpen , either inter-seeded into the current crop before harvest or after har -
vest of the cur rent crop . Depending on the sensitivity of the sown cover crop to Sharpen , stand establishment may be reduced . If cover crops
were sown less than 4 months after Sharpen application, DO NOT harvest cover crops as a food or feed crop, and DO NOT allow livestock to
graze cover crops .
Crop-specific Information
Read product information, mixing, application, weeds con -
trolled, and adjuvant instructions in preceding sections of
the label .
Depending on specific crop application directions,
Sharpen may be applied for burndown control of
emerged broadleaf weeds and/or residual control of ger-
minating broadleaf weeds (refer to Table 1 and Table 2 for
list of weeds controlled) before crop planting (preplant and/
or preseed) or after planting but before crop emergence
(preemergence) and for harvest aid/desiccation uses (refer
to Table 10 for list of crops) .
For all crop-specific uses in this section, refer to Table 5
for crop rotation intervals .
Thorough spray coverage is required for control of
emerged broadleaf weeds . High populations and/or
variations in size can prevent adequate spray coverage .
Controlling fall-germinated weeds in the spring
(e .g . horseweed/marestail) also requires thorough spray
coverage . Use higher spray volumes (e .g . 15 to 20 gallons
of water per acre) in these situations to increase spray cov-
erage and optimize burndown activity .
Alfalfa
Sharpen may be applied in the dormant season or in sea -
son between alfalfa cuttings for postemergence broadleaf
weed control (refer to Table 1 for list of weeds controlled)
in alfalfa production .
Before applying Sharpen to alfalfa, verify varietal dorman -
cy rating with your local seed company (supplier) to help
avoid potential injury to sensitive varieties .
Application Method, Rate, and Timing
Sharpen may only be applied to established stands of
alfalfa (defined as planted in the fall or spring which have
gone through a first cutting/mowing) grown for forage and/
or hay production .
Sharpen may cause transitory injury to alfalfa (leaf
necrosis) under certain conditions, but new growth is nor -
mal and yield is typically not reduced . Disease, extremely
cold weather, drought, extensive frost heaving, low or high
pH, salinity, and other environmental pressures may weak-
en alfalfa stands and make the crop more susceptible to
herbicidal injury .
Dormant-season Application for Burndown
Weed Control
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast burn -
down spray to emerged broadleaf weeds in the dormant
season [i .e . when alfalfa is not actively growing in fall (post-
harvest), or during winter dormancy] . An adjuvant system
is required for optimum broadleaf burndown activity (refer
to Additives section for details) .
For optimum postemergence control of emerged broadleaf
weeds, apply Sharpen in a minimum of 10 gallons of
water per acre .
Sequential applications of Sharpen may be made within
the dormant season if the maximum cumulative amount
does not exceed 2 .0 fl ozs/A of Sharpen . Separate
sequential dormant season burndown applications by at
least 14 days .
Timing of Sharpen applications in the dormant season
depends on the geographical region where alfalfa is
grown . Refer to the following United States map to identify
the correct region and states within the region .
14
In Region A, apply Sharpen ® herbicide at least 90 days
before harvest or yield reductions of the first cutting may
occur .
In Region B, apply Sharpen at least 75 days before har-
vest or yield reductions of the first cutting may occur .
Within Region A, only apply Sharpen in Colorado, Idaho,
Kansas, Montana, Nebraska, Nevada, North Dakota,
Oregon, South Dakota, Utah, Washington, Wyoming, and
in the California counties of Del Norte, Lassen, Plumas,
Modoc, Nevada, Shasta, Sierra, and Siskiyou .
Within Region B, only apply Sharpen in Arizona,
New Mexico, Oklahoma, Texas, and the remaining coun -
ties in California .
AK
REGION A
REGION B
WA
OR
ID
MT
CA
NV
WY
UT
CO
NE
SD
ND
KS
OK
TX
MN
IA
WI
IL
MO
AR
LA
MS
IN
MI
OH
KY
TN
AL GA
SC
NC
FL
VA
PA
NY
VT
NH
ME
MA
CT RI
NJ
DL
MDWV
AZ NM
HI
Counties of:
Del Norte
Siskiyou
Modoc
Shasta
Lassen
Plumas
Sierra
Nevada
Summer Dormant-season Application for
Burndown Weed Control
For use only in Arizona and Imperial Valley of
California. As a single application only, apply Sharpen at
1 .0 fl oz/A as a broadcast burndown spray to emerged
broadleaf weeds in the summer dormant season when
alfalfa is not actively growing . Apply to alfalfa stubble
immediately after cutting but before 2 inches of alfalfa
regrowth and before weeds reach the maximum size listed
in Table 1 of product container label . An adjuvant system
is required for optimum broadleaf burndown activity
(refer to Additives section for details) . For optimum
postemergence control of emerged broadleaf weeds,
apply Sharpen in a minimum of 10 gallons of water per
acre . Apply Sharpen at least 75 days before harvest or
yield reductions may occur .
In-season Postemergence Application
Apply Sharpen at 1 .0 fl oz/A as a broadcast postemer -
gence spray to control emerged broadleaf weeds in
season between alfalfa cuttings . Make in-season applica-
tions to alfalfa stubble immediately after cutting but before
2 inches of alfalfa regrowth and before weeds reach the
maximum size in Table 1 . An adjuvant system is required
for optimum broadleaf burndown activity (refer to
Additives section for details) . DO NOT apply more than
1 .0 fl oz/A of Sharpen in season when alfalfa is actively
growing .
Sequential Applications in Alfalfa
Sharpen may be applied as a sequential or split program
when the initial application(s) is made during the dormant
season and subsequent application(s) is postemergence in
season between alfalfa cuttings . DO NOT apply more than
a maximum cumulative amount of 3 .0 fl ozs/A of Sharpen
per cropping season .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 3 .0 fl ozs/A {Alternate text for CA-DPR
acceptance of container labeling: 2 .0 fl ozs/A} of
Sharpen (0 .067 {0 .044} lb ai/A of saflufenacil) per crop-
ping season .
• DO NOT apply Sharpen to alfalfa grown for seed
production .
• DO NOT apply to alfalfa with more than 4 inches of
growth . Application will result in burning of treated leaves
and stems . Users must understand and accept this risk
before applying Sharpen on alfalfa .
• Preharvest Interval (PHI) for alfalfa forage or hay when
Sharpen is applied in dormant season: 28 days .
• Preharvest Interval (PHI) for alfalfa forage or hay when
Sharpen is applied in season between cuttings: 21 days .
• DO NOT apply Sharpen to mixed stands of alfalfa with
other forage legumes . Sharpen is not registered for use
on other forage legumes .
Mixed Stands of Alfalfa and Perennial
Cool-season Forage Grasses
Dormant-season application for burndown weed
control. Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broad-
cast burndown spray to emerged broadleaf weeds in the
dormant season [i .e . when mixed stand is not actively
growing in fall (postharvest), or during winter dormancy] .
An adjuvant system is required for optimum broadleaf
burndown activity (refer to Additives section for details) .
Sequential applications of Sharpen may be made within
the dormant season as long as the maximum cumulative
amount does not exceed 2 .0 fl ozs/A of Sharpen . Sepa-
rate sequential dormant-season burndown applications by
at least 14 days .
Timing of Sharpen application in the dormant season in
Region A and Region B also applies to mixed stands of
alfalfa and perennial cool-season forage grasses .
In-season postemergence application. Apply
Sharpen at 1 .0 fl oz/A as a broadcast postemergence
spray to control emerged broadleaf weeds in season
(i .e . actively growing mixed stand between cuttings) . Make
in-season applications to alfalfa and grass stubble immedi -
ately after cutting but before 2 inches of alfalfa regrowth
and before weeds reach the maximum size listed in
Table 1 . An adjuvant system is required for optimum
broadleaf burndown activity (refer to Additives section for
details) . DO NOT apply more than 1 .0 fl oz/A of Sharpen
in season when alfalfa is actively growing .
15
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 3 .0 fl ozs/A {Alternate text for CA-DPR
acceptance of container labeling: 2 .0 fl ozs/A} of
Sharpen® herbicide (0 .067 {0 .044} lb ai/A of
saflufenacil) per cropping season .
• Preharvest Interval (PHI) and Pregrazing Interval
(PGI) for alfalfa forage or hay in mixed-stand
alfalfa/perennial cool-season forage grasses when
Sharpen is applied in dormant season: 28 days .
• Preharvest Interval (PHI) and Pregrazing Interval
(PGI) for alfalfa forage or hay in mixed-stand
alfalfa/perennial cool-season forage grasses when
Sharpen is applied in season between cuttings:
21 days .
Field Corn (grain, silage),
Popcorn, Seed Corn, and Sweet Corn
Sharpen may be applied preplant surface, preplant incor-
porated, or preemergence to corn for broadleaf weed
control (refer to Table 1 and Table 2 for lists of weeds
controlled) . Corn in this label refers to field corn (grown for
grain or silage), popcorn, seed corn, and sweet corn (pro -
cessing varieties only, not including sweet corn grown for
seed or fresh market varieties) . Before applying Sharpen
to seed corn, processing sweet corn, or popcorn, verify
the selectivity of Sharpen on your inbred line or hybrid
with your local seed company (supplier) to help avoid
potential injury to sensitive inbreds or hybrids .
Application Rate
Sharpen can be applied as part of a one-pass or planned
sequential (two-pass) weed control program . A one-pass
weed control program should be used where no cultivation
or postemergence herbicide application is anticipated .
One-pass application rates for Sharpen when applied
alone, in tank mix, or sequentially are in Table 6 for field
corn and Table 7 for popcorn and processing sweet corn .
Table 6. Residual Preemergence Rates of Sharpen in
Field Corn
Rate by Soil Texture and Organic Matter Content
(fl ozs/A)
Soil Texture1
Organic Matter
≤ 1.5% > 1.5%
Coarse2 2 .0 2 .5
Medium 3 .5 4 .0
Fine 4 .0 5 .0
1 Refer to Table 3 for definition of soil texture groups .
2 Use on coarse soils with less than 1 .5% organic matter may result in
crop injury .
Table 7. Residual Preemergence Rates of Sharpen in
Popcorn and Processing Sweet Corn 1
Rate by Soil Texture and Organic Matter Content
(fl ozs/A)
Soil Texture2
Organic Matter
≤ 1.5% > 1.5%
Coarse 2 .0 2 .5
Medium 2 .5 3 .0
Fine 3 .0 4 .0
1 Not for use in processing sweet corn in California .
2 Refer to Table 3 for definition of soil texture groups .
Sharpen use rates applied as the residual component of a
planned sequential (two-pass) program (see Table 8 and
Table 9) control or suppress listed weeds ( Table 1 )
through early to mid-season .
Table 8. Residual Preemergence Rates of Sharpen
in a Planned Sequential Program 1 in Field Corn and
Popcorn
Soil Texture2 Rate by Soil Texture
(fl ozs/A)
Coarse 2 .0 to 2 .5
Medium 2 .5 to 3 .0
Fine 3 .0 to 3 .5
1 Application rates in Table 8 eliminate early season broadleaf weed in -
terference until cultivation or a labeled postemergence herbicide is
applied . However, application rates in Table 6 and Table 7 should be
applied if Sharpen is being used to control weeds resistant to another
herbicide in the tank mix or sequential weed control program .
2 Refer to Table 3 for definition of soil texture groups .
Table 9. Residual Preemergence Rates of Sharpen in
a Planned Sequential Program 1,2 in Processing
Sweet Corn3
Soil Texture4 Rate by Soil Texture
(fl ozs/A)
Coarse
2 .0
(DO NOT apply on coarse soils with
≤ 3% organic matter)
Medium 2 .0
Fine 2 .0
1 Apply in tank mix with Outlook ® herbicide at labeled rates for pro -
cessing sweet corn .
2 Application rates in Table 9 will eliminate early season weed interfer -
ence until cultivation or a labeled postemergence herbicide is applied .
However, application rates in Table 7 should be applied if Sharpen is
being used to control weeds resistant to another herbicide in the tank
mix or sequential weed control program .
3 Not for use in processing sweet corn in California .
4 Refer to Table 3 for definition of soil texture groups .
16
Application Timing
Early Preplant Surface Application
(15 to 30 days before planting)
Use application rates in Table 6 when making early pre -
plant surface applications, using the highest application
rate for a given soil texture . Early preplant surface applica-
tions are not recommended on coarse soils, in areas
where average annual rainfall (or rainfall plus irrigation) typi-
cally exceeds 40 inches, or for popcorn or processing
sweet corn . Cultivation or a labeled postemergence herbi-
cide application may still be required under certain
conditions for complete weed control .
Early preplant surface applications may be applied as part
of a split application program where applications are made
as part of the application timings described in this label .
However, the cumulative total of sequential application
rates must not exceed the maximum labeled rate for a
given soil texture .
Preplant Surface and
Preplant Incorporated Applications
(up to 14 days before planting)
Sharpen® herbicide can be applied at use rates speci-
fied in Table 6 , Table 7 , Table 8 , or Table 9 to the soil
surface or incorporated up to 14 days before planting on
all soil types . For preplant incorporated application, apply
Sharpen and incorporate into the upper soil surface (1 to
2 inches) . Use a harrow, rolling cultivator, field cultivator, or
other implement capable of uniform shallow incorporation .
Avoid deeper incorporation or reduced weed control may
result .
Preemergence Surface Application
Apply Sharpen at use rates specified in Table 6 , Table 7 ,
Table 8 , or Table 9 as a broadcast spray to the soil sur -
face after planting and before crop emergence . Sharpen
must be applied before crop emergence or injury will
occur .
Burndown plus Residual Weed Control
In addition to residual broadleaf weed control at any of the
application timings previously described, Sharpen also
provides burndown of emerged broadleaf weeds listed in
Table 1 . An adjuvant system (refer to Additives section
for details) is required for optimum burndown activity .
Burndown control of emerged grasses and/or additional
broadleaf weeds not listed on the label requires a tank mix
with another herbicide (like glyphosate) .
Burndown Weed Control Only
If limited or no residual broadleaf weed control is desired,
Sharpen can be applied at 1 .0 fl oz/A (all soil types) with
an adjuvant system any time before corn emergence for
burndown of broadleaf weeds listed in Table 1 . A burn-
down application of Sharpen can be followed by residual
rates of Sharpen (Table 6 , Table 7, Table 8 , or Table 9)
or Verdict® herbicide . Separate sequential applications
by at least 14 days . However, DO NOT apply more than
the cropping seasonal maximum cumulative amount per
acre of saflufenacil from all product sources per cropping
season .
Crop-specific Use in Seed Corn. Apply Sharpen pre-
plant surface or preemergence at 1 .0 to 2 .0 fl ozs/A with
an adjuvant system for burndown broadleaf weed control
in seed corn before crop emergence . DO NOT apply more
than 1 .0 fl oz/A on coarse soils . Sequential applications of
Sharpen may be made with a minimum of 30 days
between applications . DO NOT apply more than a
maximum cumulative amount of 4 .0 fl ozs/A of Sharpen
per cropping season in seed corn .
State-specific Use in California. Apply Sharpen early
preplant through preemergence at 2 .0 fl ozs/A with an
adjuvant system for burndown broadleaf weed control
before crop emergence . Separate sequential applications
of Sharpen by at least 14 days . DO NOT apply more than
2 .0 fl ozs/A in a single application .
Crop-specific Restrictions
• DO NOT apply Sharpen after corn emergence or
severe crop injury will occur .
• DO NOT apply Sharpen at more than 1 .0 fl oz/A where
an at-planting application of an organophosphate (OP) or
carbamate insecticide(s) is planned and/or has occurred
because severe injury may result .
EXCEPTION: Sharpen may be applied when
Aztec® 2.1% granular insecticide , Aztec® 4.67 G
granular insecticide , or SmartChoice ® 5G granular
insecticide is applied at planting as a band, T-band, or
in-furrow . Sharpen may be applied with all other classes
of at-planting insecticides including neonicotinoid and
pyrethroids .
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of
saflufenacil) per cropping season .
• DO NOT apply more than a maximum cumulative
amount of 0 .134 lb ai/A of saflufenacil per cropping sea-
son in corn from all product sources .
• There is no required (preharvest) interval between a pre -
plant surface, preplant incorporated, or preemergence
application of Sharpen and the harvest of field corn
grain, popcorn, seed corn and sweet corn ears . Corn
forage, stover, and sweet corn cannery waste may be
fed to livestock after harvest .
• Corn forage and silage must not be harvested, fed, or
grazed sooner than 80 days after application .
Crop-specific Precautions
• Sharpen use may result in delayed corn emergence and
stunting under certain environmental conditions including
cool temperatures, excessive rainfall/irrigation, and/or
persistent wet soil conditions occurring after application .
• Ensure the corn seed row is closed . Soil conditions that
cause poor seed furrow closure and coverage may result
in delayed corn emergence or stunting .
17
• Sharpen® herbicide applied to processing sweet corn
planted at depth of 1/2 inch or less may result in crop
injury .
Cotton
Use Sharpen as an early preplant burndown treatment
before planting cotton .
Not for use in cotton in California .
Application Method, Rate, and Timing
Apply Sharpen as a broadcast spray at 1 .0 fl oz/A plus
recommended adjuvants (refer to Additives section for
details) for control of actively growing broadleaf weeds
(refer to Table 1 for list of weeds controlled) . Wait to plant
cotton until at least 21 to 42 days and an accumulation of
1 inch of rainfall and/or irrigation occurring after application
to avoid crop injury . In areas with average annual rainfall
less than 25 inches, the 42-day preplant interval is required
after accumulation of 1 inch of rainfall and/or irrigation .
DO NOT apply to coarse soils classified as sand with less
than 1 .5% organic matter or cotton injury may occur .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 2 .0 fl ozs/A of Sharpen (0 .044 lb ai/A of
saflufenacil) per cropping season .
• DO NOT apply Sharpen with other Group 14 herbi -
cides (including flumioxazin) as a tank mix or sequential
application within 30 days of planting because crop inju -
ry may result .
Crop-specific Precautions
• Use the most restrictive preplant interval with tank mixes
of other cotton burndown herbicides .
• Cotton gin byproducts may be fed to livestock .
Fallow and Postharvest
Sharpen may be used as a burndown treatment to con-
trol broadleaf weeds at any time of the year during the
fallow period following crop harvest and before the follow -
ing crop is planted . Sharpen may also be applied for
specific postharvest uses to burn down the remaining foli -
age after crop harvest .
Application Rate and Timing
Apply Sharpen as a broadcast burndown spray at 1 .0 to
2 .0 fl ozs/A plus recommended adjuvants (refer to
Additives section for details) . For best product perfor-
mance, apply when broadleaf weeds are small and actively
growing (refer to Table 1 for list of weeds controlled) . Thor-
ough coverage of existing weeds is essential and higher
spray volumes may be needed for best performance .
Sequential applications of Sharpen may be made with a
minimum of 14 days between applications; but DO NOT
apply more than a maximum cumulative amount of
6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of saflufenacil) per
cropping season .
For residual broadleaf weed control, Sharpen may be
applied at 2 .0 to 4 .0 fl ozs/A .
Specific rotational crop planting intervals must be
observed between application of Sharpen and planting of
the following crop (see Table 5 for rotational crop planting
intervals) .
State-specific Use in California. Apply Sharpen as a
broadcast burndown spray at 2 .0 fl ozs/A with the recom-
mended adjuvants . DO NOT apply more than 2 .0 fl ozs/A
in a single application .
Postharvest use on tomato vines. Apply Sharpen as a
broadcast burndown spray at 1 .0 to 2 .0 fl ozs/A plus rec-
ommended adjuvants (refer to Additives section for
details) . Thorough spray coverage of existing tomato vines
is essential and higher spray volumes may be needed for
best performance . DO NOT apply before or during tomato
fruit harvest . Not for use on tomato vines in California .
Forage Grasses Grown for Forage, Silage,
and Hay Production
Sharpen may be applied for broadleaf weed control (refer
to Table 1 and Table 2 for list of weeds controlled) in
perennial cool-season and warm-season forage grasses
grown in fields for forage (green chop), silage, or hay
production .
Before applying Sharpen to forage grasses, verify the
selectivity of Sharpen on your variety with your local seed
company (supplier) to help avoid potential injury to sensi-
tive varieties .
Application Method, Rate, and Timing
Apply Sharpen only to established (defined as planted in
fall or spring which has gone through a first
cutting/mowing) stands of perennial cool-season and
warm-season forage grasses .
Sharpen may cause transitory injury to forage grasses
(leaf necrosis) under certain conditions, but new growth is
normal and vigor is not reduced . Disease, extremely cold
weather, drought, extensive frost heaving, low or high pH,
salinity, and other environmental pressures may weaken
grass stands and make the crop more susceptible to her-
bicidal injury .
Dormant-season Application for Burndown
and Residual Weed Control in Warm-season
and Cool-season Grasses
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast burn-
down spray to emerged broadleaf weeds in the dormant
season [i .e . when grasses are not actively growing in fall
(postharvest), during winter dormancy, or in early spring
before greenup] . An adjuvant system is required for opti-
mum broadleaf burndown activity .
18
For additional residual broadleaf weed control, Sharpen ®
herbicide can be applied anytime in the dormant season
(as previously described) at 3 .0 to 4 .0 fl ozs/A (except in
California) .
Sequential applications of Sharpen may be made within
the dormant season if the maximum cumulative amount
does not exceed 4 .0 fl ozs/A of Sharpen . Apply dormant-
season burndown applications sequentially when the first
burndown application is in fall (postharvest) or during win -
ter dormancy, and the second application is in early spring
before greenup . Separate sequential dormant- season
burndown applications by at least 14 days .
Specific Adjuvant Requirements for Dormant-
season Application in Warm-season and
Cool-season Grasses. For optimum postemergence
control of emerged broadleaf weeds, the following adju-
vants are required for use with Sharpen :
• MSO at 1% volume/volume (v/v) plus AMS at 8 .5 to
17 .0 lbs/100 gallons
In-season Postemergence Application for
Weed Control in Cool-season Grasses
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast
postemergence spray to control emerged broadleaf weeds
in season (i .e . actively growing cool-season forage grass-
es) . Make in-season applications before weeds reach the
maximum size listed in Table 1 . Postemergence applica-
tion requires the addition of an adjuvant system .
Specific Adjuvant Requirements for In-season
Postemergence Application in Cool-season Grasses
outside of Idaho, Oregon, and Washington. For opti -
mum postemergence control of emerged broadleaf weeds,
the following adjuvant is required for use with Sharpen :
• MSO at 1% v/v
• DO NOT add nitrogen-containing fertilizers when apply -
ing Sharpen to cool-season grasses . Burndown weed
control may be reduced when nitrogen-containing fertiliz -
er is not included with Sharpen .
• Some cool-season grass species, including Timothy and
orchardgrass, may exhibit crop response like leaf burn
and leaf trapping when adding a nitrogen-containing fer -
tilizer with post emergence application of Sharpen .
Specific Adjuvant Requirements for In-season
Postemergence Application in Cool-season Grasses
grown in Idaho, Oregon and Washington. For opti -
mum postemergence control of emerged broadleaf weeds,
the following adjuvant is required for use with Sharpen :
• MSO at 1% v/v
• DO NOT apply Sharpen to Timothy and orchardgrass .
• DO NOT add nitrogen-containing fertilizers when apply -
ing Sharpen to cool-season grasses . Burndown weed
control may be reduced when nitrogen-containing fertiliz -
er is not included with Sharpen .
In-season Postemergence Application for
Weed Control in Warm-season Grasses
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast
postemergence spray to control emerged broadleaf weeds
in season (i .e . actively growing warm-season forage grass-
es) . In-season postemergence applications can be made
in the spring after greenup . Make in-season applications
before weeds reach the maximum size listed in Table 1 .
Postemergence application requires the addition of an
adjuvant system .
DO NOT apply Sharpen in-season postemergence on
Bahiagrass, buffalograss, and switchgrass .
DO NOT apply more than 1 .0 fl oz/A of Sharpen in forage
Bermudagrass applied in-season postemergence (i .e . after
greenup) because higher rates may cause unacceptable
grass injury .
Specific Adjuvant Requirements for Postemergence
Application in Warm-season Grasses. For optimum
postemergence control of emerged broadleaf weeds, the
following adjuvant is required for use with Sharpen :
• MSO at 1% v/v
• DO NOT add nitrogen-containing fertilizers when apply -
ing Sharpen to warm-season grasses .
Sequential Applications in Warm-season
and Cool-season Grasses
Sharpen may be applied as a sequential or split program
when application(s) is in the dormant season and subse -
quent application(s) is postemergence in season after
greenup . DO NOT apply more than a maximum cumula -
tive amount of 6 .0 fl ozs/A of Sharpen per cropping
season .
In-season postemergence application of Sharpen may
also be applied sequentially; separate sequential applica -
tions by at least 14 days . The maximum cumulative
amount for in-season postemergence application must not
exceed 2 .0 fl ozs/A of Sharpen .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of
saflufenacil) per cropping season .
• DO NOT apply Sharpen to mixed stands of grass and
forage legumes (except dormant-season alfalfa, see
Alfalfa use section) or to grass stands containing other
desirable broadleaf species . Sharpen application will kill
or cause severe injury to forage legumes and most
broadleaf species .
• DO NOT apply Sharpen to stands of annual forage
(e .g . forage sorghum, Sudangrass) .
Crop-specific Precautions
• For a mixed stand of cool-season and warm-season
grasses, follow use directions for warm-season grasses
when applying Sharpen in-season postemergence .
19
• There is no preharvest or pre-grazing interval for
Sharpen® herbicide-treated grass forage, hay, or
pasture .
Grass Establishment
Sharpen may be applied for preemergence broadleaf
weed control (refer to Table 1 and Table 2 for list of
weeds controlled) in fields when establishing stands of
cool-season grasses grown for forage (in pastures or
rangeland for livestock grazing); for forage (green chop),
silage, or hay production; or grown for seed production .
Before applying Sharpen preemergence to cool-season
grasses, BASF recommends consulting with your local
seed company (supplier) on the selectivity of Sharpen on
your species and/or variety to help avoid potential injury to
sensitive varieties .
Not for use in grass establishment in California .
Application Method, Rate, and Timing
Sharpen may be applied preplant, preplant incorporated,
or preemergence in the fall or spring while establishing
stands of cool-season grasses .
Sharpen may cause transitory injury to cool-season
grasses under certain conditions . Disease, extremely cold
weather, drought, extensive frost heaving, low or high pH,
salinity, and other environmental pressures may weaken
grass stands and make the crop more susceptible to her-
bicidal injury .
Burndown and Residual Weed Control
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast spray
to the soil surface before grasses emerge . If burndown of
emerged broadleaf weeds is desired, an adjuvant system
(refer to Additives section for details) is required for opti-
mum broadleaf burndown activity .
For additional residual broadleaf weed control, Sharpen
can be applied at 3 .0 to 4 .0 fl ozs/A .
Sequential Applications
Sharpen may be applied as a sequential or split program
when the initial application is made preplant or
preemergence while establishing the stand, and the sub -
sequent application(s) is postemergence in season after
establishment . However, DO NOT apply more than a max -
imum cumulative amount of 6 .0 fl ozs/A of Sharpen per
cropping season .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of
saflufenacil) per cropping season .
• DO NOT apply Sharpen when establishing solid stands
of warm-season grasses or mixed stands of cool-season
and warm-season grasses .
• DO NOT apply Sharpen when establishing mixed
stands of cool-season grasses and forage legumes or
other desirable broadleaf species . Sharpen application
will kill or cause severe injury to emerging alfalfa, clover,
other legumes, and most broadleaf species .
• There is no preharvest or pre-grazing interval for
Sharpen-treated grass harvested as forage or hay .
Grass Grown for Seed Production
Sharpen may be applied for broadleaf weed control (refer
to Table 1 and Table 2 for list of weeds controlled) in
perennial cool-season and warm-season grasses grown in
fields for seed production .
Before applying Sharpen to grasses grown for seed pro-
duction, verify the selectivity of Sharpen on your variety
with your local seed company (supplier) to help avoid
potential injury to sensitive varieties .
Application Method, Rate, and Timing
Sharpen may be applied to new establishment seedling
fields and to established fields (stands defined as planted
in fall, spring, or summer that have gone through a first
cutting/mowing) of perennial cool-season and
warm-season grasses grown for seed production .
Sharpen may cause transitory injury to seed grasses (leaf
necrosis) under certain conditions, but new growth is nor -
mal and vigor is not reduced . Disease, extremely cold
weather, drought, extensive frost heaving, low or high pH,
salinity, and other environmental pressures may weaken
grass stands and make the crop more susceptible to her-
bicidal injury .
Cool-season Grasses
New Establishment Seedling Grass Seed
Fields
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast burn-
down spray to emerged broadleaf weeds in new
establishment seedling grass fields after the first tiller of the
grass is fully established in fall or spring . If the seedling
grass field was established in fall, Sharpen may also be
applied sequentially in spring before greenup as a burn -
down spray . A maximum of two applications may be
applied . Applications must be separated by at least
14 days; DO NOT apply more than 2 .0 fl ozs/A of
Sharpen during this period .
Burndown application requires the addition of an adjuvant
system (see the following adjuvant section) .
Established Grass Seed Fields
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast
postemergence spray to control emerged broadleaf weeds
anytime in season (i .e . actively growing grass in spring
after greenup until 1 week before boot stage) .
Sharpen may be applied as a single application or
sequentially in season . A maximum of two applications
may be applied . Sequential applications of Sharpen must
20
be separated by at least 14 days; DO NOT apply more
than 2 .0 fl ozs/A of Sharpen ® herbicide in season . Poste-
mergence application requires the addition of an adjuvant
system (see the following adjuvant section) .
Sequential Applications in Grass Seed Fields
Sharpen may be applied as a sequential or split program
when the initial application(s) is during the period after a
fully established first tiller in fall until spring greenup, and
the subsequent application(s) is postemergence in season .
Specific Adjuvant Requirements for Burndown and
Postemergence Applications. For optimum
postemergence control of emerged broadleaf weeds, the
following adjuvant is required for use with Sharpen :
• MSO at 1% volume/volume (v/v)
• DO NOT add nitrogen-containing fertilizers when apply -
ing Sharpen to seedling or established stands of
cool-season grasses other than Kentucky Bluegrass .
AMS may be added at 8 .5 to 17 lbs/100 gallons to appli-
cations on Kentucky Bluegrass .
Warm-season Grasses
New Establishment Seedling Grass Seed
Fields
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast burn -
down spray to emerged broadleaf weeds in new
establishment seedling grass fields after the first rhizome
or stolon of the grass is fully established . Sequential appli-
cations of Sharpen may be made until 1 week before boot
stage . A maximum of two applications may be applied .
Applications must be separated by at least 14 days;
DO NOT apply more than 2 .0 fl ozs/A of Sharpen during
this period .
Burndown application requires the addition of an adjuvant
system (see the following adjuvant section) .
Established Grass Seed Fields
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast
postemergence spray to control emerged broadleaf weeds
anytime in season (i .e . actively growing grass in spring
after greenup until 1 week before boot stage) .
Sharpen may be applied as a single application or
sequentially in season . A maximum of two applications
may be applied . Sequential applications of Sharpen must
be separated by at least 14 days; DO NOT apply more
than 2 .0 fl ozs/A of Sharpen in season .
Postemergence application requires the addition of an
adjuvant system (see the following adjuvant section) .
Specific Adjuvant Requirements for Burndown and
Postemergence Application. For optimum
postemergence control of emerged broadleaf weeds, the
following adjuvant is required for use with Sharpen :
• MSO at 1% v/v
• DO NOT add nitrogen-containing fertilizers when apply -
ing Sharpen to seedling or established stands of
warm-season grasses .
Cool-season and Warm-season Grasses
Dormant-season Application in Established
Grass Seed Stands for Burndown and
Residual Weed Control
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast burn -
down spray to emerged broadleaf weeds in the dormant
season [i .e . when grasses are not actively growing in fall
(postharvest), during winter dormancy, or in early spring
before greenup] . An adjuvant system is required for
optimum broadleaf burndown activity (see the following
adjuvant section) .
For additional residual broadleaf weed control in estab -
lished stands, apply Sharpen anytime in the dormant
season (as previously described) at 3 .0 to 4 .0 fl ozs/A
(except in California) .
Specific Adjuvant Requirements for Dormant-
season Applications in Cool-season and
Warm-season Grasses. For optimum postemergence
control of emerged broadleaf weeds, the following adju-
vants are required for use with Sharpen :
• MSO at 1% v/v plus AMS at 8 .5 to 17 .0 lbs/100 gallons
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of
saflufenacil) per cropping season on established grass
seed stands and 4 .0 fl ozs/A (0 .089 lb ai/A of saflufenacil)
on seedling grass seed stands .
• Preharvest Interval (PHI) for grass seed: 50 days .
• DO NOT apply Sharpen to bahiagrass, buffalograss, or
switchgrass .
Crop-specific Precautions
• Sharpen-treated grass forage or hay may be grazed by
or fed to livestock; there is no preharvest or pregrazing
interval .
• Grass straw remaining after seed harvest may be used
as livestock bedding and/or grazed by or fed to livestock .
• Grass seed screenings remaining after seed harvest and
processing may be fed to livestock .
Harvest Aid/Desiccation
Sharpen may be used for harvest aid/desiccation in the
crops listed in Table 10 . Uniformly apply Sharpen as a
broadcast spray by air or ground . Ground application is
recommended at a minimum spray volume of 10 gallons/A .
Aerial application is recommended at a minimum spray
volume of 5 gallons/A . Thorough spray coverage and an
MSO plus ammonium-based adjuvant system (refer to the
Additives section) are required for optimum desiccation
activity .
Sharpen may be applied in a single application or
sequential applications .
21
Harvest aid/desiccation uses are considered separate and
DO NOT contribute to the maximum cumulative seasonal
use rates of Sharpen® herbicide when applied during the
cropping season .
Refer to Table 5 for rotational crop planting intervals .
Table 10. Crops for Harvest Aid/Desiccation
Crop Application Timing
Sharpen®
herbicide
Use Rate
(fl ozs/A)
PHI*
(days)
Crop-specific
Restrictions
Barley,
(spring and winter)
Wheat,
(durum, spring, and winter)
Triticale
Spray over the top of barley, wheat,
and triticale that have reached physi-
ological maturity (hard-dough stage;
grain contains less than 30% mois-
ture) or according to Extension
Service recommendations in the use
area .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmen -
tal and atmospheric conditions
which may increase or decrease
time period stated here.
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses:
2 .0
(0 .044 lb
ai/A of
saflufenacil)
3
(grain)
Desiccation-treated
barley, wheat, and
triticale straw may be
grazed or fed to
livestock .
DO NOT apply to
barley grown for
malting purposes .
Not for use for barley,
wheat, and triticale
desiccation in
California .
Chia Spray over the top of chia that have
reached physiological maturity or ac -
cording to Extension Service recom -
mendations in the use area .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmen -
tal and atmospheric conditions
which may increase or decrease
time period stated here.
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses:
2 .0
(0 .044 lb
ai/A of
saflufenacil)
3
(grain)
DO NOT apply on
chia grown for seed
production .
Desiccation-treated
chia straw may be
grazed or fed to
livestock .
Not for use for chia
desiccation in
California .
Field Corn Spray over the top of corn that have
reached physiological maturity or ac -
cording to Extension Service recom -
mendations in the use area .
Allow up to 10 days for optimum
desiccation effect depending on
environmental conditions.
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses: 2 .0
(0 .044 lb
ai/A of
saflufenacil)
3
(grain)
DO NOT apply on
field corn grown for
seed production .
Desiccation-treated
field corn stover
(stalks) may be grazed
or fed to livestock .
[Not for use for field
corn desiccation in
California .]
[Optional text in
brackets]
(continued)
22
Table 10. Crops for Harvest Aid/Desiccation (continued)
Crop Application Timing
Sharpen®
herbicide
Use Rate
(fl ozs/A)
PHI*
(days)
Crop-specific
Restrictions
Dry Edible Beans
Phaseolus spp . (all types)
Lupinus spp . (all types)
V igna spp . [including:
adzuki bean, catjang,
moth bean, mung bean,
rice bean, Southern pea
(blackeyed pea, cowpea,
crowder pea), urd bean]
Broad bean (Fava bean)
Garbanzo bean (Chickpea)
Guar
Lablab bean (Hyacinth
bean)
Lentils
Spray over the top of dry edible
beans that have reached physiologi-
cal maturity (beans have at least 80%
yellow/brown pods and no more than
30% of leaves still green for vine-type
beans and lentils, and no more than
40% of leaves still green for bush-
type beans; or according to
Extension Service recommendations
in the use area for other crops) .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmen -
tal and atmospheric conditions
which may increase or decrease
time period stated here.
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses:
2 .0
(0 .044 lb
ai/A of
saflufenacil)
2
(dry
edible
beans)
DO NOT apply on dry
edible beans grown
for seed production .
DO NOT graze or
feed desiccation-
treated hay or straw to
livestock .
DO NOT apply harvest
aid/desiccation to
green lentil varieties .
Not for use for
[ garbanzo bean
(chickpea) and] lentils
desiccation in
California .
[Optional text in
brackets]
Dry Peas
Dry field peas
Pisum spp . (all other types)
Pigeon Pea
Spray over the top of dry peas that
have reached physiological maturity
(peas with at least 80% yellow/brown
pods and no more than 30% of leaves
still green for vine-type peas, and no
more than 40% of leaves still green for
bush-type peas; or according to
Extension Service recommendations
in the use area for other crops) .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmen -
tal and atmospheric conditions
which may increase or decrease
time period stated here.
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses:
2 .0
(0 .044 lb
ai/A of
saflufenacil)
3
(dry
peas)
Desiccation-treated
pea vines may be
grazed or fed to
livestock .
Not for use for
dry peas desiccation
in California .
(continued)
23
Table 10. Crops for Harvest Aid/Desiccation (continued)
Crop Application Timing
Sharpen®
herbicide
Use Rate
(fl ozs/A)
PHI*
(days)
Crop-specific
Restrictions
Oilseeds Canola
(Rapeseed) Subgroup 20A
Borage
Brassica juncea
Crambe
Cuphea
Echium
Flax
Gold-of-pleasure (Camelina)
Hares ear mustard
Lesquerella
Lunaria
Meadowfoam
Milkweed
Mustard seed
Oil radish
Poppy seed
Rapeseed (Canola)
Sesame
Sweet rocket
Spray over the top of crop(s) that has
reached physiological maturity [70%
to 80% bolls turn to brown for flax;
seeds in the middle pods have
started to turn in color for Brassica
juncea, canola (rapeseed), and mus-
tard; or according to Extension
Service recommendations in the use
area for other crops] .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmen -
tal and atmospheric conditions
which may increase or decrease
time period stated here.
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses:
2 .0
(0 .044 lb
ai/A of
saflufenacil)
3
(seed)
DO NOT apply on
oilseed crops grown
for seed production .
Not for use for
oilseeds canola
(rapeseed) desiccation
in California .
Oilseeds Cottonseed
Subgroup 20C
Cotton (Cottonseed)
including:
Spindle pick harvested
cotton
Stripper harvested cotton
Spray over the top of cotton that has
reached physiological maturity (ac-
cording to local State Agricultural
Extension Service guidelines, includ -
ing nodes above cracked boll, accu-
mulated heat units after cutout, or at
least 60% to 70% boll opening) .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmen -
tal and atmospheric conditions
which may increase or decrease
time period stated here.
Large plant size, dense canopy, and
environmental conditions not condu-
cive for defoliation may require a sec-
ond defoliation application 5 to
7 days later .
Single
application:
0 .5 to 2 .0
Maximum
cumulative
amount per
cropping
season for
defoliation/
desiccation
uses:
2 .0
(0 .044 lb
ai/A of
saflufenacil)
5
(cotton)
Sharpen-treated gin
trash may be fed to
livestock .
(continued)
24
Table 10. Crops for Harvest Aid/Desiccation (continued)
Crop Application Timing
Sharpen®
herbicide
Use Rate
(fl ozs/A)
PHI*
(days)
Crop-specific
Restrictions
Oilseeds Sunflower
Subgroup 20B
Calendula
Castor oil plant
Chinese tallowtree
Euphorbia
Evening primrose
Jojoba
Niger seed
Rose hip
Safflower
Stokes aster
Sunflower
Tallowwood
Tea oil plant
Veronica
Spray over the top of crop(s) that has
reached physiological maturity (seed
moisture less than 36% for sunflower;
when heads are fully mature for saf-
flower; or according to Extension
Service recommendations in the use
area for other crops) . For many sun-
flower varieties, the back of the sun-
flower heads are yellow and the bracts
are turning brown at this timing .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmental
and atmospheric conditions which
may increase or decrease time pe -
riod stated here.
Minor frost events up to 3 days after
Sharpen application may reduce
harvest aid effects and cause sunflower
to dry down less efficiently .
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses:
4 .0
(0 .089 lb
ai/A of
saflufenacil)
7
(seed)
DO NOT apply on
oilseed crops grown
for seed production .
DO NOT use after
multiple minor frosts
or single significant
frost event .
Soybean Spray over the top of soybeans that have
reached physiological maturity (all pods
and seeds have no more green color) .
Indeterminate Varieties
Greater than 65% brown pods and
greater than 70% leaf drop or when
seed moisture is 30% or less .
Determinate Varieties
Beans are fully developed, more than
50% leaf drop, and remaining leaves are
yellowing .
Allow up to 10 days for optimum
desiccation effect. Actual time to
harvest depends on environmental
and atmospheric conditions which
may increase or decrease time pe -
riod stated here.
Single
application:
1 .0 to 2 .0
Maximum
cumulative
amount per
cropping
season for
desiccation
uses:
2 .0
(0 .044 lb
ai/A of
saflufenacil)
3
(soybean
seed)
DO NOT apply on
soybean grown for
seed production .
DO NOT graze or
feed desiccation-
treated hay or straw
to livestock .
* PHI = preharvest interval, minimum time elapsed between last Sharpen application and harvest of treated seed
25
Tank Mixes
Cotton
Sharpen® herbicide may be tank mixed with other cot-
ton defoliant products including, but not limited to:
ethephon, ethephon plus AMADS, ethephon plus cyclani -
lide, sodium chlorate, thidiazuron, thidiazuron plus diuron,
tribufos, glyphosate, or paraquat . Refer to the other prod-
ucts label for restrictions on tank mixing, precautions, and
rotational restrictions . The most restrictive labeling applies
to tank mixes .
All Other Crops
Apply Sharpen with a labeled rate of glyphosate for addi-
tional preharvest weed control . Sharpen also may be tank
mixed with other registered harvest aid/desiccation prod -
ucts . Read and follow the applicable restrictions and
limitations and directions for use on the glyphosate and
other tank mix product labels, and to confirm they are
labeled for the specific crop to be desiccated . The most
restrictive labeling applies to tank mixes .
DO NOT apply tank mix of Sharpen and glyphosate for
harvest aid/desiccation on crops grown for seed
production .
Leafy Spurge Control
Sharpen applied in tank mix with Plateau ® herbicide
controls leafy spurge when applied late spring/early sum -
mer in forage grasses, pasture and rangeland, and other
areas described in the Noncropland Areas section of
this label . This tank mix also controls additional weeds list-
ed on the respective Sharpen and Plateau labels .
Sharpen and Plateau tank mix may be applied by ground
or air as a uniform broadcast application or spot treatment .
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A plus Plateau at 4 .0 to
6 .0 fl ozs/A to leafy spurge when it reaches the yellow
bract (pre-bloom) stage in late spring/early summer .
DO NOT apply this tank mix as a fall application because
control may not be satisfactory .
Spray Additives. Sharpen plus Plateau tank mix
requires the use of an effective adjuvant system . For best
results, use NIS at 0 .25% v/v plus AMS at 8 .5 to
17 .0 lbs/100 gallons [1% to 2% weight/volume (w/v)] . Crop
oil concentrate (COC) or MSO may also be used with this
tank mixture when injury (stunting, necrosis) to grasses is
acceptable .
Water Volume. Use 5 or more and 10 or more gallons of
water per acre for aerial and ground application, respec -
tively . Thorough coverage of weeds is essential, and higher
spray volumes may be necessary for better performance
on a heavy population of leafy spurge .
Leafy spurge not controlled in California .
Legume Vegetables
[chickpea, edible bean, edible pea,
field pea (dry), lentil, southern pea,
and vegetable soybean (edamame)]
Sharpen may be applied preplant surface, preplant incor -
porated, and/or preemergence in legume crops specified
in this section for broadleaf weed control (refer to Table 1
and Table 2 for lists of weeds controlled) .
Application Method, Rate, and Timing
See the specific application rate and timing recommenda -
tions as they vary by legume crop . With burndown
application, an adjuvant system (refer to Additives section
for details) is required for optimum burndown activity .
Before applying Sharpen to any of the specified legume
crops, verify the selectivity of Sharpen on your variety with
your seed company (supplier) to help avoid potential injury
to sensitive varieties .
Use of Sharpen may result in delayed crop emergence
and stunting under certain environmental conditions
including cool temperatures, excessive rainfall/irrigation,
and/or persistent wet soil conditions occurring after
application .
Chickpea (garbanzo bean)
Sharpen is for use in all types of chickpeas .
Burndown. Apply Sharpen early preplant through
preemergence at 1 .0 fl oz/A for burndown broadleaf weed
control before crop emergence . Sequential applications of
Sharpen may be made with a minimum of 14 days
between applications .
Burndown plus Residual. Apply Sharpen early preplant
through preemergence at 2 .0 fl ozs/A for burndown plus
residual broadleaf weed control before crop emergence .
Ensure the seed row is closed . Soil conditions that cause
poor seed furrow closure and coverage may result in
delayed crop emergence or stunting . Sequential
applications of Sharpen may be made with a minimum of
30 days between applications .
State-specific Use in Idaho, Oregon, and
Washington. The most effective weed control is achieved
with a sequential program of Sharpen . Initially apply
Sharpen early preplant at 1 .0 fl oz/A for burndown broad-
leaf weed control . Make a sequential Sharpen application
at least 14 days later preplant through preemergence at
1 .0 to 3 .0 fl ozs/A for burndown plus residual broadleaf
weed control before crop emergence . Ensure the seed
row is closed . Soil conditions that cause poor seed furrow
closure and coverage may result in delayed crop emer-
gence and or stunting .
DO NOT apply more than a maximum cumulative amount
of 4 .0 fl ozs/A of Sharpen (0 .089 lb ai/A saflufenacil) per
cropping season in chickpeas .
26
Edible Beans
Sharpen® herbicide is for use ONLY on the following
edible bean types:
• Edible-podded Vigna beans (asparagus bean, Chinese
longbean, moth bean, yardlong bean)
• Succulent Vigna beans (blackeyed pea, cowpea,
southern pea)
• Dry and succulent Vicia beans (broad bean, faba bean,
fava bean, field bean)
• Dry Vigna beans (adzuki bean, moth bean, mung bean,
rice bean)
• Dry Lupinus beans (grain lupin, sweet lupin, white lupin,
white sweet lupin)
Apply Sharpen early preplant at 0 .75 fl oz/A for burndown
broadleaf weed control before crop emergence . For only
limited residual activity on broadleaf weeds, Sharpen may
also be applied preplant incorporated or preemergence at
0 .75 to 2 .0 fl ozs/A . Sequential applications of Sharpen
may be made with a minimum of 14 days between
applications .
DO NOT apply more than a maximum cumulative amount
of 2 .0 fl ozs/A of Sharpen (0 .045 lb ai/A saflufenacil) per
cropping season in edible beans .
Edible Peas
Sharpen is for use ONLY on the following edible peas:
• Edible-podded peas (dwarf pea, edible-pod pea, snow
pea, sugar snap pea)
• Succulent peas (English pea, garden pea, green pea,
marrowfat pea)
Apply Sharpen early preplant at 0 .75 fl oz/A for burndown
broadleaf weed control before crop emergence . For only
limited residual activity on broadleaf weeds, Sharpen may
also be applied preplant incorporated or preemergence at
0 .75 to 2 .0 fl ozs/A . Sequential applications of Sharpen
may be made with a minimum of 14 days between appli-
cations . Not for use in edible peas in California .
State-specific Use in Idaho, Illinois, Iowa, Michigan,
Minnesota, New York, Oregon, Washington, and
Wisconsin. Apply Sharpen preplant incorporated or pre-
emergence at 0 .75 fl oz/A in English or sugar snap peas
for residual suppression of the following broadleaf weeds:
• Black nightshade
• Common lambsquarters
• Redroot pigweed
• Velvetleaf
Preplant incorporated - Apply Sharpen up to one week
before planting . DO NOT incorporate deeper than
3 inches .
Preemergence - Apply Sharpen up to 3 days after
planting but before cracking stage or emergence, or
severe crop injury will occur . Ensure the seed row is
closed . Soil conditions that cause poor seed furrow clo -
sure and coverage may result in delayed crop emergence
or stunting .
Sequential applications of Sharpen may be made with a
minimum of 30 days between applications . DO NOT apply
more than a maximum cumulative amount of 2 .0 fl ozs/A of
Sharpen (0 .045 lb ai/A saflufenacil) per cropping season
in edible peas .
Field Peas
Sharpen is for use ONLY on dry field peas including
Austrian winter peas .
Burndown. Apply Sharpen early preplant through
preemergence at 1 .0 fl oz/A for burndown broadleaf weed
control before crop emergence . Sequential applications of
Sharpen may be made with a minimum of 30 days
between applications .
Burndown plus Residual. Apply Sharpen early preplant
through preemergence at 2 .0 fl ozs/A for burndown plus
residual broadleaf weed control before crop emergence .
Ensure the seed row is closed . Soil conditions that cause
poor seed furrow closure and coverage may result in
delayed crop emergence or stunting . Sequential applica-
tions of Sharpen may be made with a minimum of
30 days between applications .
DO NOT apply more than a maximum cumulative amount
of 4 .0 fl ozs/A of Sharpen (0 .089 lb ai/A saflufenacil) per
cropping season in dry field peas .
Lentils
Sharpen may be applied to green-type and red-type len -
tils . DO NOT apply Sharpen to Spanish brown lentils .
State-specific Use in Minnesota, Montana,
North Dakota, South Dakota, and Wyoming. Apply
Sharpen early preplant to preemergence at 0 .75 fl oz/A
for burndown broadleaf weed control before crop emer-
gence . For only limited residual activity on broadleaf
weeds, Sharpen may also be applied preplant incorporat-
ed at 0 .75 to 2 .0 fl ozs/A . Sequential applications of
Sharpen may be made with a minimum of 14 days
between applications . DO NOT apply more than a maxi -
mum cumulative amount of 2 .0 fl ozs/A of Sharpen
(0 .045 lb ai/A saflufenacil) per cropping season in lentils .
DO NOT use Sharpen for lentils grown in any other state
including California .
Use Advisory for Lentils. Lentil injury may be observed
depending on factors including rainfall, soil type, seeding
depth, and variety . Rainfall shortly after Sharpen applica-
tion can result in slight injury to the crop . Lentils will be
more susceptible to injury from Sharpen on coarse-
texture and low-organic matter soils . Injury usually appears
as leaf tissue necrosis on the outer edges of the leaves .
Lentils will grow out of injury symptoms, and yield will not
be impacted at labeled rates . Soil residual herbicides may
increase the sensitivity of lentils to Sharpen and should
not be combined as a tank mix or sequential treatment
within 30 days of planting in a lentil weed control program .
DO NOT apply Sharpen with any other soil-applied
residual herbicide as a tank mix partner or sequential
application within 30 days of planting . The addition of other
27
soil-applied herbicides can increase the sensitivity of lentils
to Sharpen® herbicide and crop injury could result .
Southern pea
(blackeyed pea, cowpea, Crowder pea)
Sharpen is for use only in the dry shelled types of south -
ern pea (blackeyed pea, cowpea, Crowder pea) . Not for
use in southern pea in California .
Burndown. Apply Sharpen early preplant through
preemergence at 1 .0 fl oz/A for burndown broadleaf weed
control before crop emergence . Sequential applications of
Sharpen may be made with a minimum of 30 days
between applications .
Burndown plus Residual. Apply Sharpen early preplant
through preemergence at 2 .0 fl ozs/A for burndown plus
residual broadleaf weed control before crop emergence .
Ensure the seed row is closed . Soil conditions that cause
poor seed furrow closure and coverage may result in
delayed crop emergence and/or stunting . Sequential appli-
cations of Sharpen may be made with a minimum of
30 days between applications .
DO NOT apply more than a maximum cumulative amount
of 4 .0 fl ozs/A of Sharpen (0 .089 lb ai/A saflufenacil) per
cropping season in southern pea .
Vegetable Soybean (edamame)
Burndown . Apply Sharpen early preplant through
preemergence at 1 .0 fl oz/A for burndown broadleaf weed
control before crop emergence . Sequential applications of
Sharpen may be made with a minimum of 14 days
between applications .
Burndown plus Residual. Apply Sharpen early preplant
through preemergence at 2 .0 fl ozs/A for burndown plus
residual broadleaf weed control before crop emergence .
Ensure the seed row is closed . Soil conditions that cause
poor seed furrow closure and coverage may result in
delayed crop emergence or stunting . Sequential applica-
tions of Sharpen may be made with a minimum of
30 days between applications .
DO NOT apply more than a maximum cumulative amount
of 4 .0 fl ozs/A of Sharpen (0 .089 lb ai/A saflufenacil) per
cropping season in vegetable soybean .
Crop-specific Restrictions
• DO NOT apply Sharpen if cold and/or wet conditions
are present or predicted to occur within 1 week of
application .
• DO NOT apply when legumes have reached the crack -
ing stage or after emergence or severe crop injury will
occur .
• DO NOT apply Sharpen with other products containing
Group 14 herbicides (including sulfentrazone or
flumioxazin) as a tank mix partner or sequential applica -
tion within 30 days of planting because crop injury may
result .
EXCEPTION: Sharpen at 1 .0 fl oz/A in field pea and at
1 .0 to 2 .0 fl ozs/A in chickpea may be tank mixed or
sequentially applied with other Group 14 herbicides when
grown in Idaho, Montana, North Dakota, Oregon,
South Dakota, and Washington . [Tank mix Sharpen
only with one other Group 14 herbicide but not more than
one in field pea and chickpeas .]
[Optional text in brackets .]
• DO NOT use Sharpen on any Phaseolus bean species .
• There is no required (preharvest) interval between a pre -
plant or preemergence application of Sharpen and the
harvest of mature legume pods or seeds .
• Legume forage must not be fed or grazed sooner than
65 days after application .
Crop-specific Precautions
• Plant legumes at least 1/2-inch deep to reduce risk of
crop injury from Sharpen application .
Mint
For use only in Idaho, Indiana, Michigan, Montana,
Oregon, Utah, Washington, and Wisconsin.
Apply Sharpen only to dormant established stands
(defined as at least one year after planting) of mint (i .e ., all
Mentha species tops, includes stands harvested for fresh
leaves or for stems and leaves processed into oil) for
postemergence broadleaf weed control (refer to Table 1
for list of weeds controlled) . All Mentha species tops here-
after referred to as mint .
Application Method, Rate, and Timing
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast burn-
down spray to emerged broadleaf weeds in the dormant
season [i .e . when mint is not actively growing in fall (post-
harvest), or during winter dormancy] . An adjuvant system
is required for optimum broadleaf burndown activity (refer
to Additives section for details) .
For optimum postemergence control of emerged broadleaf
weeds, apply Sharpen in a minimum of 10 gallons of
water per acre .
Sequential applications of Sharpen may be made within
the dormant season if the maximum cumulative amount
does not exceed 2 .0 fl ozs/A of Sharpen . Separate
sequential dormant season burndown applications by at
least 14 days .
Crop-specific Restrictions
• DO NOT apply Sharpen to mint that has broken
dormancy .
• DO NOT apply Sharpen to mint in the first year of
growth and establishment .
• DO NOT apply more than 2 .0 fl ozs/A of Sharpen
(0 .044 lb ai/A of saflufenacil) in a single application or as
28
a maximum cumulative amount from sequential applica -
tions in mint per cropping season .
• Maximum number of applications per year: 2
• There is no required (preharvest) interval between a dor -
mant application of Sharpen ® herbicide and the
harvest of mint .
Crop-specific Precautions
• Application to mint stands that have been weakened by
age, disease, cold weather, excessive moisture, or other
factors that reduce crop vigor may result in crop injury .
Mint growing under stress is more susceptible to herbi -
cide damage .
• Application to mint that is near dormancy break will result
in crop injury . Risk of crop injury increases the closer
application is to mint dormancy break .
• After Sharpen application, temporary crop injury may be
observed in the growing season as mint breaks dorman -
cy and begins to grow .
• The use of Sharpen may result in growth suppression of
mint if extreme conditions of high rainfall, high winds,
and/or extended periods of water-saturated soil occur
right before or soon after mint breaks dormancy .
Pasture and Rangeland
Sharpen may be applied for broadleaf weed control (refer
to Table 1 and Table 2 for list of weeds controlled) in
perennial cool-season and warm-season forage grasses
grown in pastures or rangeland or Federal Conservation
Reserve Program (CRP) land for livestock grazing .
Before applying Sharpen to forage grasses, verify the
selectivity of Sharpen on your variety with your local seed
company (supplier) to help avoid potential injury to sensi-
tive varieties .
Application Method, Rate, and Timing
Apply Sharpen only to established (defined as planted in
fall or spring which has gone through a first
cutting/mowing) stands of perennial cool-season and
warm-season forage grasses .
Sharpen may cause transitory injury to forage grasses
(leaf necrosis) under certain conditions, but new growth is
normal and vigor is not reduced .
Disease, extremely cold weather, drought, extensive frost
heaving, low or high pH, salinity, and other environmental
pressures may weaken grass stands and make the crop
more susceptible to herbicidal injury .
Dormant-season Application for
Burndown and Residual Weed Control in
Warm-season and Cool-season Grasses
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast burn -
down spray to emerged broadleaf weeds in the dormant
season [i .e . when grasses are not actively growing in fall
(postharvest), during winter dormancy, or in early spring
before greenup] . An adjuvant system is required for opti-
mum broadleaf burndown activity .
For additional residual broadleaf weed control, Sharpen
can be applied anytime in the dormant season (as previ -
ously described) at 3 .0 to 4 .0 fl ozs/A (except in California) .
Sequential applications of Sharpen may be made within
the dormant season if the maximum cumulative amount
does not exceed 4 .0 fl ozs/A of Sharpen . Apply dormant-
season burndown applications sequentially when the first
burndown application is made in fall (postharvest) or
during winter dormancy, and the second application is in
early spring before greenup . Separate sequential
dormant-season burndown applications by at least
14 days .
Specific Adjuvant Requirements for Dormant-
season Application in Warm-season and Cool-
season Grasses. For optimum postemergence control of
emerged broadleaf weeds, the following adjuvants are
required for use with Sharpen:
• MSO at 1% volume/volume (v/v) plus AMS at 8 .5 to
17 .0 lbs/100  gallons
In-season Postemergence Application for
Weed Control in Cool-season Grasses
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A as a broadcast
postemergence spray to control emerged broadleaf weeds
in season (i .e . actively growing cool-season forage grass-
es) . Make in-season applications before weeds reach the
maximum size listed in Table 1 . Postemergence applica-
tion requires the addition of an adjuvant system .
Specific Adjuvant Requirements for In-season
Postemergence Application in Cool-season Grasses
outside of Idaho, Oregon, and Washington. For opti -
mum postemergence control of emerged broadleaf weeds,
the following adjuvant is required for use with Sharpen :
• MSO at 1% v/v
• DO NOT add nitrogen-containing fertilizers when apply-
ing Sharpen to cool-season grasses . Burndown weed
control may be reduced when nitrogen-containing fertiliz -
er is not included with Sharpen .
• Some cool-season grass species, including Timothy and
orchardgrass, may exhibit crop response like leaf burn
and leaf trapping when adding a nitrogen-containing
fertilizer with post emergence application of Sharpen .
Specific Adjuvant Requirements for In-season
Postemergence Application in Cool-season Grasses
grown in Idaho, Oregon and Washington. For opti -
mum postemergence control of emerged broadleaf weeds,
the following adjuvant is required for use with Sharpen :
• MSO at 1% v/v
• DO NOT apply Sharpen to Timothy and orchardgrass .
• DO NOT add nitrogen-containing fertilizers when apply-
ing Sharpen to cool-season grasses . Burndown weed
control may be reduced when nitrogen-containing fertiliz -
er is not included with Sharpen .
29
In-season Postemergence Application for
Weed Control in Warm-season Grasses
Apply Sharpen ® herbicide at 1 .0 to 2 .0 fl ozs/A as a
broadcast postemergence spray to control emerged
broadleaf weeds in season (i .e . actively growing warm-
season forage grasses) . In-season postemergence
application can be made in spring after greenup . Make
in-season applications before weeds reach the maximum
size listed in Table 1 . Postemergence application requires
the addition of an adjuvant system .
DO NOT apply Sharpen in-season postemergence on
Bahiagrass, buffalograss, and switchgrass .
DO NOT apply more than 1 .0 fl oz/A of Sharpen in forage
Bermudagrass applied in-season postemergence (i .e . after
greenup) because higher rates may cause unacceptable
grass injury .
Specific Adjuvant Requirements for Postemergence
Application in Warm-season Grasses. For optimum
postemergence control of emerged broadleaf weeds, the
following adjuvant is required for use with Sharpen :
• MSO at 1% v/v
• DO NOT add nitrogen-containing fertilizers when apply -
ing Sharpen to warm-season grasses .
Sequential Applications in Warm-season
and Cool-season Grasses
Sharpen may be applied as a sequential or split program
when application(s) is made in the dormant season and
subsequent application(s) is made postemergence
in season after greenup . DO NOT apply more than a max-
imum cumulative amount of 6 .0 fl ozs/A of Sharpen per
cropping season .
In-season postemergence applications of Sharpen may
also be applied sequentially; separate sequential applica -
tions of Sharpen by at least 14 days . The maximum
cumulative amount for in-season postemergence applica -
tions must not exceed 2 .0 fl ozs/A of Sharpen .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of
saflufenacil) per cropping season .
• DO NOT apply Sharpen to mixed stands of grass and
forage legumes (except dormant-season alfalfa, see
Alfalfa use section) or to grass stands containing other
desirable broadleaf species . Sharpen application will kill
or cause severe injury to forage legumes and most
broadleaf species .
• DO NOT apply Sharpen to stands of annual forage
(e .g . forage sorghum, Sudangrass) .
Crop-specific Precautions
• For a mixed stand of cool-season and warm-season
grasses, follow use directions for warm-season grasses
when applying Sharpen in-season postemergence .
• There is no preharvest or pre-grazing interval for
Sharpen-treated grass forage, hay, or pasture .
Rice
Sharpen may be applied preplant, preemergence, or
postemergence in rice for broadleaf weed control (refer to
Table 1 and Table 2 for list of weeds controlled; refer to
Table 11 for additional rice-specific weeds controlled) .
Rice in this label refers to drilled or dry-seeded, and
water-seeded rice . Before applying Sharpen to rice, verify
the selectivity of Sharpen on your variety or hybrid with
your local seed company (supplier) and/or BASF represen -
tative to help avoid potential injury to sensitive varieties or
hybrids .
Application Method, Rate, and Timing
Preplant and Preemergence Burndown plus
Residual Weed Control
Apply Sharpen as a broadcast burndown spray preplant
through preemergence (0 to 3 days after rice planting) at
1 .0 to 2 .0 fl ozs/A . An adjuvant system including MSO and
AMS (refer to Additives section for details) is required for
optimum broadleaf burndown activity . For best product
performance, apply when broadleaf weeds are small and
actively growing . Thorough spray coverage of emerged
weeds is required; higher spray volumes may be needed
for best performance .
For additional residual broadleaf weed control, Sharpen
can be applied preplant through preemergence at 3 .0 to
4 .0 fl ozs/A .
Postemergence Weed Control
Apply Sharpen for postemergence control of small and
actively growing emerged broadleaf weeds at 1 .0 to
2 .0 fl ozs/A . Postemergence application can be made
before or after flooding when rice has reached the 3-leaf
stage up to internode elongation . DO NOT apply Sharpen
to rice in the spike to 2-leaf stage . On rice grown in Texas,
DO NOT apply Sharpen postemergence .
Tank mixes with products formulated as emulsifiable con-
centrates (EC) may enhance the crop injury potential of
Sharpen in postemergence application .
30
Table 11. Additional Weeds Controlled in Rice by
Postemergence Application of Sharpen ® herbicide
Common Name Scientific Name
Maximum
Height
(inches)
Dayflower Commelina spp . 3
Ducksalad Heteranthera limesa 3
Eclipta Eclipta alba 4
Flat sedge Cyperus iria 3
Jointvetch, Indian Aeschynomene indica 3
Jointvetch, Northern Aeschynomene virginica 3
Redstem Ammannia spp . 4
Sesbania Sesbania exaltata 8
Texasweed Caperonia palustris 3
Water hyssop Bacopa eisenii 3
Woolly croton Croton capitatus 3
Adjuvant Requirements for Postemergence-specific
Application in Rice. For optimum postemergence con-
trol of emerged broadleaf weeds in rice, the following
adjuvants are required with Sharpen :
• Use a crop oil concentrate (COC) at 1 pint/A to
1 quart/A .
• DO NOT use MSO or severe crop injury may occur .
• DO NOT use NIS as a substitute for COC or poor per -
formance on broadleaf weeds will occur .
Rice Crop Response. Temporary leaf burn and/or
speckling may occur after postemergence application;
new growth and development is unaffected with rapid
recovery in good growing conditions . Severe leaf burn
and/or stand loss may occur in stressful growing condi -
tions (e .g . low soil fertility, seedling/foliar disease, extreme
hot or cold weather, high soil pH, high soil salt concentra-
tion, or drought) .
Sequential Applications
Sequential applications of Sharpen may be made in rice,
but DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen per cropping season .
Separate sequential applications of Sharpen by at least
14 days .
Preplant or preemergence burndown applications may be
applied as part of a sequential application program when
the first application is preplant or preemergence, and the
sequential application(s) is postemergence . Postemer-
gence applications may be sequentially made before or
after flooding . For postemergence application, DO NOT
apply more than a maximum cumulative amount of
2 .0 fl ozs/A of Sharpen per cropping season .
State-specific Use in California. Apply Sharpen as a
broadcast burndown spray at 2 .0 fl ozs/A at least 15 days
before rice planting and 45 days before a permanent flood
is established . An adjuvant system (refer to Additives sec-
tion for details) is required for optimum broadleaf
burndown activity . DO NOT apply Sharpen after paddy
flooding or postemergence to the crop . DO NOT apply
more than 2 .0 fl ozs/A in a single application . DO NOT
apply within 45 days of permanent flooding in water-
seeded rice paddies . DO NOT use released tailwater for
irrigation of adjacent crops .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of
saflufenacil) per cropping season .
• DO NOT apply micronutrients or macronutrients as a
tank mix partner for postemergence applications or crop
injury will occur .
• Sharpen may be applied to rice fields used for crusta-
cean (including crayfish) production and commercial fish
production .
• DO NOT apply Sharpen to rice fields that will also be
used for mollusk production during the treatment year .
• DO NOT release flood water from treated fields for
7 days after Sharpen application .
Small Grains
(barley, canaryseed, oats, pearl millet,
proso millet, rye, triticale, and wheat)
Sharpen may be applied preplant surface, preplant incor-
porated, or preemergence to small grains for broadleaf
weed control (refer to Table 1 and Table 2 for list of
weeds controlled) . Small grains in this label refers to wheat
(including durum, spring, and winter), barley, canaryseed,
oats, millet (pearl and proso), rye, and triticale . Before
applying Sharpen to small grains, verify the selectivity of
Sharpen on your variety with your seed company (suppli-
er) to help avoid potential injury to sensitive varieties .
Application Method, Rate, and Timing
Burndown. Apply Sharpen for burndown and/or residual
control of broadleaf weeds early preplant through
preemergence at 1 .0 to 2 .0 fl ozs/A . Sharpen at
2 .0 fl ozs/A provides limited residual control of broad-
leaf weeds . Performance depends on amount of rainfall for
activation, soil texture, and broadleaf species/population .
An adjuvant system (refer to the Additives section for
details) is required for optimum broadleaf burndown
activity .
Burndown plus Residual Control in Wheat. Apply
Sharpen in winter wheat and spring wheat early preplant
through preemergence at 3 .0 to 4 .0 fl ozs/A for burndown
plus residual control of broadleaf weeds . Performance
depends on amount of rainfall for activation, soil texture,
and broadleaf species/populations . An adjuvant system
(refer to the Additives section for details) is required for
optimum broadleaf burndown activity . Not for use at these
use rates in California .
Sequential Applications. Sharpen may be applied
sequentially as needed before small grain emergence .
31
Early preplant application may be applied as part of a split
application program when the first application is early pre -
plant and the second application is preemergence .
Separate sequential applications of Sharpen ® herbicide
by at least 30 days in millet and by at least 14 days in all
other small grains .
Winter Wheat Dormancy Application. For residual
broadleaf weed control, apply Sharpen at 1 .0 to
2 .0 fl ozs/A to dormant winter wheat only . DO NOT apply
until dormant period or during and/or after spring greenup
(dormancy break) . Water or liquid fertilizer may be used as
the spray carrier .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A {Alternate text for CA-DPR
acceptance of container labeling: 4 .0 fl ozs/A} of
Sharpen (0 .134 {0 .089} lb ai/A of saflufenacil) per crop-
ping season .
• DO NOT apply after small grain emergence or crop inju -
ry will occur .
• Small grain forage and hay must not be fed or grazed
sooner than 30 days after application .
• DO NOT apply to other types of millet (e .g . foxtail millet)
or severe crop injury may occur .
• DO NOT apply to millet grown in soils with a pH of 7 .8 or
above or crop injury may occur .
Crop-specific Precautions
• Ensure the seed row is sufficiently covered with soil to
avoid washing and concentration of the herbicide in the
seed zone .
Sorghum
(all types)
Sharpen may be applied preplant surface, preplant incor-
porated, or preemergence to sorghum (all types specified
in the following list) for broadleaf weed control (refer to
Table 1 and Table 2 for list of weeds controlled) . Before
applying Sharpen to sweet sorghum, verify with your local
seed company (supplier) the selectivity of Sharpen on
your hybrid or variety to help avoid potential injury to sensi -
tive hybrids or varieties .
Sharpen is for use ONLY on the following sorghum types:
• Grain sorghum (milo, durra, kaffir-corn, Indian millet,
great millet, grand millet, kaoliang, Chinese sorghum,
shattercane, guineacorn, sorgo comun)
• Sweet sorghum (sorgo, sorgo duice, Zuckerhirse, sorgo
doux)
Application Rate
Application rates for Sharpen applied alone, in tank mix,
or sequentially are in Table 12 for grain sorghum and
Table 13 for sweet sorghum .
Table 12. Residual Preemergence Rates of Sharpen
in Grain Sorghum
Rate by Soil Texture and Organic Matter Content
(fl ozs/A)
Soil Texture1
Organic Matter
≤ 1.5% > 1.5%
Coarse DO NOT USE 2 .0
Medium 2 .5 3 .0
Fine 3 .0 4 .0
1 Refer to Table 3 for definition of soil texture groups .
Table 13. Residual Preemergence Rates of Sharpen
in Sweet Sorghum
Rate by Soil Texture and Organic Matter Content
(fl ozs/A)
Soil Texture1
Organic Matter
≤ 1.5% > 1.5%
Coarse DO NOT USE 2 .0
Medium 2 .5 3 .0
Fine 3 .0 4 .0
1 Refer to Table 3 for definition of soil texture groups .
Application Timing
Early Preplant Surface Application
(15 to 30 days before planting)
Application rates in Table 12 and Table 13 should be used
when making early preplant surface application, using the
highest application rate for a given soil texture . Early preplant
surface application is not recommended on coarse soils or in
areas where average annual rainfall (or rainfall plus irrigation)
typically exceeds 40 inches . Cultivation or a labeled poste-
mergence herbicide application may still be required under
certain conditions for complete weed control .
Early preplant surface application may be part of a split
application program when made at the application timings
described in this label . However, the cumulative total of
sequential application rates must not exceed the maximum
labeled rate for a given soil texture .
Preplant Surface and
Preplant Incorporated Applications
(up to 14 days before planting)
Sharpen can be applied at rates specified in Table 12
and Table 13 to the soil surface or incorporated up to
14 days before planting on all soil types . For preplant
incorporated application, apply Sharpen and incorporate
into the upper soil surface (1 to 2 inches) . Use a harrow,
rolling cultivator, field cultivator, or other implement capable
of uniform shallow incorporation . Avoid deeper incorpora-
tion or reduced weed control may result .
32
Preemergence Surface Application
Apply Sharpen ® herbicide at use rates specified in
Table 12 and Table 13 as a broadcast spray to the soil
surface after planting and before crop emergence .
Sharpen must be applied before crop emergence or inju -
ry will occur .
Burndown plus Residual Weed Control
In addition to residual broadleaf weed control at any of the
application timings previously described, Sharpen also
provides burndown of emerged broadleaf weeds listed in
Table 1 . An adjuvant system (refer to Additives section
for details) is required for optimum burndown activity .
Burndown control of emerged grasses and/or additional
broadleaf weeds not listed on the label requires a tank mix
with another herbicide (like glyphosate) .
Burndown Weed Control Only
Sharpen can be applied at 1 .0 to 2 .0 fl ozs/A (all soil
types) with an adjuvant system (refer to the Additives sec-
tion for details) anytime before sorghum emergence for
burndown of weeds listed in Table 1 . A burndown applica-
tion of Sharpen can be followed by residual rates of
Sharpen (Table 12 and Table 13 ) or Verdict® herbicide .
Sequential applications must be separated by at least
14 days . However, DO NOT apply more than the cropping
seasonal maximum cumulative amount per acre of
saflufenacil from all product sources .
State-specific Use in California. Apply Sharpen early
preplant through preemergence at 2 .0 fl ozs/A with an
adjuvant system for burndown broadleaf weed control
before crop emergence . Separate sequential applications
by at least 14 days . DO NOT apply more than 2 .0 fl ozs/A
of Sharpen in a single application .
Crop-specific Restrictions
• DO NOT apply Sharpen after sorghum emergence or
severe crop injury will occur .
• DO NOT apply Sharpen at more than 1 .0 fl oz/A within
30 days of planting where an at-planting application of an
organophosphate or carbamate insecticide(s) is planned
and/or has occurred or severe injury may result .
EXCEPTION: Sharpen may be applied when
Aztec® 2.1% granular insecticide , Aztec® 4.67 G
granular insecticide , or SmartChoice ® 5G granular
insecticide is applied at planting as a band, T-band, or
infurrow . Sharpen may be applied with all other classes
of at-planting insecticides including neonicotinoids and
pyrethroids .
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs/A of Sharpen (0 .134 lb ai/A of
saflufenacil) per cropping season .
• DO NOT apply more than a maximum cumulative
amount of 0 .134 lb ai/A of saflufenacil per cropping sea-
son in sorghum from all product sources .
• Grain sorghum and sweet sorghum forage must not be
harvested, fed, or grazed sooner than 70 days after
application .
Soybean
Sharpen may be applied in fall and/or in spring as a
preplant surface, preplant incorporated, or preemergence
burndown application in conventional-till, reduced-till, or
no-till soybeans for broadleaf weed control (refer to
Table 1 and Table 2 for list of weeds controlled) . An adju-
vant system (refer to Additives section for details) is
required for optimum burndown activity .
Use of Sharpen may result in delayed soybean emer-
gence and stunting under certain environmental conditions
including cool temperatures, excessive rainfall/irrigation,
and/or persistent wet soil conditions occurring after
application .
Not for use in soybean in California .
Application Method, Rate, and Timing
Fall Application
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A for burndown broad-
leaf weed control after the prior crop is harvested .
Application must be made before first killing frost . Fall
application can be made to all soil types .
Spring Application
Apply Sharpen early preplant through preemergence at
1 .0 fl oz/A for burndown broadleaf weed control before
crop emergence .
Apply Sharpen early preplant at 1 .5 or 2 .0 fl ozs/A for
burndown plus residual broadleaf weed control .
Soybean Planting Interval
Depending on Sharpen use rate, soil texture, and organic
matter, an interval between Sharpen application and
planting may be required (see Table 14 and Table 15 ) or
crop injury may occur .
Table 14. Minimum Soybean Planting Intervals
Minimum Preplant Interval
(days)
Required between Sharpen Application and
Soybean Planting
Sharpen
Use Rate
(fl ozs/A)
Soil Texture1
Coarse Soils
with ≤ 2.0%
Organic Matter
All Other Soils
1 .0 30 0
1 .5 30 14
2 .0 44 30
1 Refer to Table 3 for definition of soil texture groups .
33
Table 15. Minimum Soybean Planting Intervals with
other Group 14 Herbicides
Minimum Preplant Interval
(days)
Required between Sharpen ® herbicide Application
and Soybean Planting when Tank Mixed or
Sequentially Applied with a Group 14 Herbicide 1
Sharpen
Use Rate
(fl ozs/A)
Soil Texture2
Coarse Soils
with ≤ 2.0%
Organic Matter
All Other Soils
1 .0 30 14*
1 .5 30 30
2 .0 44 30
1 Group 14 herbicides including sulfentrazone or flumioxazin
2 Refer to Table 3 for definition of soil texture groups .
* Interval for reduced-till and no-till soybean only . Interval for
conventional-till soybean is 30 days .
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative
amount of 4 .0 fl ozs/A of Sharpen (0 .089 lb ai/A of
saflufenacil) per cropping season . Sequential applica-
tions of Sharpen MUST be separated by at least
30 days .
• DO NOT apply more than a maximum cumulative
amount of 0 .089 lb ai/A of saflufenacil per cropping sea-
son in soybean from all product sources .
• DO NOT apply when soybean has reached the cracking
stage or after emergence or severe crop injury will occur .
• DO NOT apply Sharpen within 30 days of planting
where an at-planting application of an organophosphate
or carbamate insecticide(s) is planned and/or has
occurred because severe injury may result .
• Always use the most restrictive preplant interval of all
inclusive herbicides when applying Sharpen as part of a
tank mix .
• Soybean forage must not be fed or grazed sooner than
65 days after application .
Crop-specific Precautions
• Contact your local retailer or BASF representative before
applying Sharpen to natto soybeans to verify tolerance
and help avoid potential injury .
• Ensure the seed row is sufficiently covered with soil to
avoid washing and concentration of the herbicide in the
seed zone .
• Group 14 herbicides labeled for postemergence appli-
cation in soybean may be used 14 days or more after
soybean emergence . Refer to other products labels for
use directions .
Soybean
(only Kixor® Selected varieties)
Use directions in this section are only intended for
Kixor® Selected soybean varieties. The term
“Kixor® Selected” describes soybean varieties that
exhibit less sensitivity to Sharpen, but it does not
imply any genetic modification to impart tolerance
or resistance to the herbicide. Contact your local
BASF representative or go to
http://www.agproducts.basf.us/products/kixor-
selected-soybean-varieties.html for a full list of
current Kixor ® Selected soybean varieties.
Sharpen may be applied in fall and/or in spring as a
preplant surface, preplant incorporated, or preemergence
burndown application in conventional-till, reduced-till, or
no-till soybeans for broadleaf weed control; refer to
Table 1 and Table 2 for list of weeds controlled . An adju-
vant system (refer to Additives for details) is required for
optimum burndown activity .
Use of Sharpen may result in delayed soybean emer-
gence and stunting under certain environmental conditions
including cool temperatures, excessive rainfall/irrigation,
and/or persistent wet soil conditions occurring after
application .
Not for use on Kixor® Selected soybean varieties in
California .
Application Method, Rate, and Timing
Fall Application
Apply Sharpen at 1 .0 to 2 .0 fl ozs/A for burndown broad-
leaf weed control after the prior crop is harvested .
Application must be made before first killing frost . Fall
application can be made to all soil types .
Spring Application
Apply Sharpen early preplant through preemergence at
1 .0 fl oz/A for burndown broadleaf weed control before
crop emergence .
Apply Sharpen early preplant through preemergence at
2 .0 fl ozs/A for burndown plus residual broadleaf weed
control before crop emergence .
Soybean Planting Interval
Depending on Sharpen use rate, soil texture, and organic
matter, an interval between Sharpen application and
planting may be required (see Table 16) or crop injury may
occur .
34
Table 16. Minimum Kixor ® Selected Soybean
Planting Intervals
Minimum Preplant Interval
(days)
Required between Sharpen ® herbicide Application
and Planting of Kixor Selected Soybean Varieties
Sharpen
Use Rate
(fl ozs/A)
Soil Texture1
Coarse Soils
with ≤ 2.0%
Organic Matter
All Other Soils
1 .0
0
0
30 days
when tank mixed
or sequentially
applied with
other Group 142
herbicides
2 .0 30 0
1 Refer to Table 3 for definition of soil texture groups .
2 Group 14 herbicides including sulfentrazone or flumioxazin
Crop-specific Restrictions
• DO NOT apply more than a maximum cumulative amount
of 4 .0 fl ozs/A of Sharpen (0 .089 lb ai/A of saflufenacil) per
cropping season . Sequential applications of Sharpen
MUST be separated by at least 30 days .
• DO NOT apply more than a maximum cumulative
amount of 0 .089 lb ai/A of saflufenacil per cropping sea-
son in soybean from all product sources .
• DO NOT apply Sharpen when soybean has reached
the cracking stage or after emergence or severe crop
injury will occur .
• DO NOT apply Sharpen within 30 days of planting
when an at-planting application of an organophosphate
or carbamate insecticide(s) is planned and/or has
occurred because severe injury may result .
• Always use the most restrictive preplant interval of all
inclusive herbicides when applying Sharpen as part of a
tank mix .
• Soybean forage must not be fed or grazed sooner than
65 days after application .
• DO NOT apply more than 1 .0 fl oz/A of Sharpen with
other products containing Group 14 herbicides (includ-
ing sulfentrazone or flumioxazin) as a tank mix or as a
sequential spring application .
Crop-specific Precautions
• Ensure the seed row is sufficiently covered with soil to
avoid washing and concentration of the herbicide in the
seed zone .
• Group 14 herbicides labeled for postemergence appli-
cation in soybean may be used 14 days or more after
soybean emergence . Refer to other products labels for
use directions .
Noncropland Areas
DO NOT apply Sharpen in any residential setting .
Sharpen may be used:
• In noncropland areas including fence rows, nonirrigation
ditchbanks, dry irrigation ditchbanks, and on farmstead
areas (barnyards, lanes, driveways, machinery or imple -
ment yards, windbreaks)
Application Method, Rate, and Timing
Sharpen may be applied in a single application or
sequentially with an interval of 14 days or more .
Application rates for Sharpen when applied alone, in tank
mix, or sequentially are in Table 17 .
Use Restrictions
• DO NOT apply more than a maximum cumulative
amount of 6 .0 fl ozs of Sharpen (0 .134 pound active
ingredient saflufenacil) per acre per year .
• In California, DO NOT apply more than 2 .0 fl ozs/A of
Sharpen in a single application .
• DO NOT apply Sharpen to irrigation ditchbanks that
contain irrigation water or will contain irrigation water
within 2 weeks .
35
Table 17. Application Rates in Noncropland Areas
Application Application
Target
Application
Rate
(fl ozs/A)
Postemergence Weed size
< 6 inches 2 to 4
Weed size
≥ 6 inches and/
or heavier weed
infestations
4 to 6a
Postemergence
+
Residual
Burndown
+ Residual
preemergence
weed control
6b
Tank Mixes with Glyphosate
Accelerated
Burndown
Accelerated
burndown of
broadleaf weeds
and/or control of
glyphosate-
tolerant species
[e .g . horseweed
(marestail)]
1 to 2
Accelerated
Burndown
+
Residual
Accelerated
burndown of
broadleaf weeds
plus control of
glyphosate-
tolerant species
with residual
preemergence
weed control
6b
a Partial control or suppression may result with application to weeds
more than 6 inches .
b For effective residual control of labeled weed species, Sharpen ®
herbicide MUST be used at the maximum use rate of 6 fl ozs/A .
Spot Treatment
Sharpen may be applied as a spot treatment to emerged
broadleaf weeds . Consult the following chart for the
amount of Sharpen to make various gallons of spray mix
for spot treatments applied to actively growing broadleaf
weeds and sizes referenced in Table 1 . Spray thoroughly
to wet weed foliage but not to the point of runoff .
To maximize performance, refer to the Additives section
for recommended adjuvant and rate to add to the spray
mix .
Each spray mix is equivalent to applying Sharpen at
2 .0 fl ozs/A in a spray volume of 100 gallons per acre .
Applications of a spot spray mix should not be made to an
equivalent area less than what is shown in the chart or
exceed the equivalent broadcast rate of 2 .0 fl ozs/A .
Spot treatments may be applied via an ATV-mounted
(all-terrain vehicle-mounted) or tractor-mounted sprayer
equipped for low-pressure hand wand application .
DO NOT apply spot treatments using high-pressure hand
wands .
Spray Mix
(gallons)
Spray Mix
Treatment Area
(sq ft)
Sharpen
(fl oz)
1 436 0 .02
5 2,178 0 .1
10 4,356 0 .2
25 10,890 0 .5
50 21,780 1 .0
Selective Weeding
Apply Sharpen up to 2 .0 fl ozs/A as a postemergence
spray plus the recommended adjuvant (refer to Additives
section for details) as a uniform broadcast application or
spot treatment for selective broadleaf weed control .
Tank Mixes for Selective Weeding
Broad-spectrum postemergence and/or residual control of
grasses or additional broadleaf weeds requires a tank mix
with another herbicide . Sharpen may be tank mixed or
applied sequentially with one or more of, but not limited to,
the following herbicide products:
• glyphosate
36
Conditions of Sale and Warranty
The Directions For Use of this product reflect the
opinion of experts based on field use and tests . The
directions are believed to be reliable and must be
followed carefully . However, it is impossible to eliminate
all risks inherently associated with the use of this
product . Crop injury, ineffectiveness or other unintended
consequences may result because of such factors as
weather conditions, presence of other materials, or use
of the product in a manner inconsistent with its labeling,
all of which are beyond the control of BASF
CORPORATION (“BASF”) or the Seller . To the extent
consistent with applicable law, all such risks shall be
assumed by the Buyer .
BASF warrants that this product conforms to the
chemical description on the label and is reasonably fit for
the purposes referred to in the Directions For Use ,
subject to the inherent risks, referred to above .
TO THE EXTENT CONSISTENT WITH APPLICABLE
LAW, BASF MAKES NO OTHER EXPRESS OR
IMPLIED WARRANTY OF FITNESS OR
MERCHANTABILITY OR ANY OTHER EXPRESS OR
IMPLIED WARRANTY.
TO THE EXTENT CONSISTENT WITH APPLICABLE
LAW, BUYERS EXCLUSIVE REMEDY AND BASFS
EXCLUSIVE LIABILITY, WHETHER IN CONTRACT,
TORT, NEGLIGENCE, STRICT LIABILITY, OR
OTHERWISE, SHALL BE LIMITED TO REPAYMENT
OF THE PURCHASE PRICE OF THE PRODUCT.
TO THE EXTENT CONSISTENT WITH APPLICABLE
LAW, BASF AND THE SELLER DISCLAIM ANY
LIABILITY FOR CONSEQUENTIAL, EXEMPLARY,
SPECIAL OR INDIRECT DAMAGES RESULTING
FROM THE USE OR HANDLING OF THIS
PRODUCT.
BASF and the Seller offer this product, and the Buyer
and User accept it, subject to the foregoing Conditions
of Sale and Warranty which may be varied only by
agreement in writing signed by a duly authorized
representative of BASF . 1108
© 2024 BASF Corporation
All rights reserved .
007969-00278 .20240216c .NVA 2024-04-0322-0042
Supersedes: NVA 2022-04-0322-0169
Supplemental: NVA 2022-04-0322-0164
BASF Corporation
26 Davis Drive
Research Triangle Park, NC 27709
Kixor, Outlook, Plateau, Sharpen, and Verdict are
registered trademarks of BASF.
Accu-Flo is a trademark of Bishop Equipment Mfg., Inc.
Aztec is a registered trademark of Bayer. (tebupirimphos +
cyfluthrin, EPA Reg . Nos . 5481-9030 and 5481-9028)
SmartChoice is a registered trademark of AMVAC
Chemical Corporation. (chlorethoxyfos + bifenthrin,
EPA Reg . No . 5481-561)
Tank Mix Partners
Outlook Herbicide (dimethenamid-P),
EPA Reg . No . 7969-156
Plateau Herbicide (imazapic), EPA Reg . No . 241-365
Verdict Herbicide (dimethenamid-P + saflufenacil),
EPA Reg . No . 7969-279
BASF Corporation
26 Davis Drive, Research Triangle Park, NC 27709
Supplemental Label
For weed control in mint only in Idaho, Indiana, Michigan, Montana, Oregon,
Utah, Washington, and Wisconsin.
This supplemental label expires September 30, 2027, and must not be used or distributed after this date.
Active Ingredient:
saflufenacil: N'-[2-chloro-4-fluoro-5-(3-methyl-2,6-dioxo-4-(trifluoromethyl)-3,6-dihydro-1(2H)-
pyrimidinyl)benzoyl]-N-isopropyl-N-methylsulfamide........................................................................................ 29.74%
Other Ingredients: ........................................................................................................................................... 70.26%
Total: ............................................................................................................................................................... 100.00%
Contains 2.85 pounds active ingredient saflufenacil per gallon formulated as a water-based suspension concentrate
EPA Reg. No. 7969-278
CAUTION/PRECAUCIÓN
Directions For Use
 It is a violation of federal law to use this product in a
manner inconsistent with its labeling.
 The supplemental labeling and the entire
Sharpen® Powered by Kixor® herbicide
(henceforth in this label referred to as Sharpen or
Sharpen herbicide) container label, EPA Reg. No.
7969-278, must be in possession of the user at the
time of application.
 Read the label affixed to the container for Sharpen
before applying.
 Use of Sharpen according to this labeling is subject
to the use precautions and limitations imposed by the
label affixed to the container for Sharpen.
Use Information
Sharpen provides contact burndown broadleaf weed
control. Refer to Sharpen container label for complete
list of weeds controlled. Sharpen does not control
grass weeds and must be used sequentially or tank
mixed with a grass herbicide for a complete weed
control program.
Application Information
Application Rates and Timings
Apply Sharpen only to dormant established stands
(defined as at least one year after planting) of mint (i.e.,
all Mentha species tops, includes stands harvested for
fresh leaves or for stems and leaves processed into
oil). All Mentha species tops hereafter referred to as
mint.
Apply Sharpen at 1.0 to 2.0 fl ozs/A as a broadcast
burndown spray to emerged broadleaf weeds in the
dormant season [i.e. when mint is not actively growing
in fall (postharvest), or during winter dormancy]. An
adjuvant system is required for optimum broadleaf
burndown activity (refer to Additives section on the
product container label for details).
Saflufenacil Group 14 Herbicide
09/10/2024
7969-278
2
For optimum postemergence control of emerged
broadleaf weeds, apply Sharpen® herbicide in a
minimum of 10 gallons of water per acre.
Sequential applications of Sharpen may be made
within the dormant season if the maximum cumulative
amount does not exceed 2.0 fl ozs/A of Sharpen.
Separate sequential dormant season burndown
applications by at least 14 days.
Crop-specific Restrictions
 DO NOT apply Sharpen to mint that has broken
dormancy.
 DO NOT apply Sharpen to mint in the first year of
growth and establishment.
 DO NOT apply more than 2.0 fl ozs/A of Sharpen
(0.044 lb a.i./A of saflufenacil) in a single application
or as a maximum cumulative amount from sequential
applications in mint per cropping season.
 Maximum number of applications per year: 2
 There is no required (preharvest) interval between a
dormant application of Sharpen and the harvest of
mint.
 Refer to Table 5 on the product container label for
crop rotation intervals.
Crop-specific Precautions
 Application to mint stands that have been weakened
by age, disease, cold weather, excessive moisture,
or other factors that reduce crop vigor may result in
crop injury. Mint growing under stress is more
susceptible to herbicide damage.
 Application to mint that is near dormancy break will
result in crop injury. Risk of crop injury increases the
closer application is to mint dormancy break.
 After Sharpen application, temporary crop injury may
be observed in the growing season as mint breaks
dormancy and begins to grow.
 The use of Sharpen may result in growth
suppression of mint if extreme conditions of high
rainfall, high winds, and/or extended periods of
water-saturated soil occur right before or soon after
mint breaks dormancy.
Tank Mixtures
It is the pesticide users responsibility to ensure that all
products are registered for the intended use. Read and
follow the applicable restrictions and limitations and
directions for use on all product labels involved in tank
mixing. Users must follow the most restrictive directions
for use and precautionary statements of each product
in the tank mixture.
3
Conditions of Sale and Warranty
The Directions For Use of this product reflect the
opinion of experts based on field use and tests. The
directions are believed to be reliable and must be
followed carefully. However, it is impossible to
eliminate all risks inherently associated with the use
of this product. Crop injury, ineffectiveness or other
unintended consequences may result because of
such factors as weather conditions, presence of
other materials, or use of the product in a manner
inconsistent with its labeling, all of which are
beyond the control of BASF CORPORATION
(“BASF”) or the Seller. To the extent consistent with
applicable law, all such risks shall be assumed by
the Buyer.
BASF warrants that this product conforms to the
chemical description on the label and is reasonably
fit for the purposes referred to in the Directions For
Use, subject to the inherent risks, referred to above.
TO THE EXTENT CONSISTENT WITH
APPLICABLE LAW, BASF MAKES NO OTHER
EXPRESS OR IMPLIED WARRANTY OF
FITNESS OR MERCHANTABILITY OR ANY
OTHER EXPRESS OR IMPLIED WARRANTY.
TO THE EXTENT CONSISTENT WITH
APPLICABLE LAW, BUYERS EXCLUSIVE
REMEDY AND BASFS EXCLUSIVE LIABILITY,
WHETHER IN CONTRACT, TORT, NEGLIGENCE,
STRICT LIABILITY, OR OTHERWISE, SHALL BE
LIMITED TO REPAYMENT OF THE PURCHASE
PRICE OF THE PRODUCT.
TO THE EXTENT CONSISTENT WITH
APPLICABLE LAW, BASF AND THE SELLER
DISCLAIM ANY LIABILITY FOR
CONSEQUENTIAL, EXEMPLARY, SPECIAL OR
INDIRECT DAMAGES RESULTING FROM THE
USE OR HANDLING OF THIS PRODUCT.
BASF and the Seller offer this product, and the
Buyer and User accept it, subject to the foregoing
Conditions of Sale and Warranty which may be
varied only by agreement in writing signed by a duly
authorized representative of BASF.
1108
Kixor and Sharpen are registered trademarks of
BASF.
© 2024 BASF Corporation
All rights reserved.
007969-00278.20221027c.NVA 2022-04-0322-0164
BASF Corporation
26 Davis Drive
Research Triangle Park, NC 27709