crop-chem-docs/corpus/epa_ppls/1381-246.md

# WELD HERBICIDE

- EPA Reg No: **1381-246**
- Registrant: WINFIELD SOLUTIONS, LLC
- Signal word: Caution
- Active ingredients: MCPA, 2-ethylhexyl ester (30.73%); Clopyralid (5.6%); Fluroxypyr 1-methylheptyl ester (10.37%)
- Label accepted: 2022-05-09
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/001381-00246-20220509.pdf

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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
 WASHINGTON, DC 20460 
 
 
 
OFFICE OF CHEMICAL SAFETY 
AND POLLUTION PREVENTION 
 May 9, 2022 
 
Diana Williams 
Registration Specialist 
Winfield Solutions, LLC 
P.O. Box 64589 
St. Paul, MN 55164-0589 
 
Subject: Registration Review Label Mitig ation for Fluroxypyr, MCPA and Clopyralid 
 Product Name: WELD HERBICIDE 
 EPA Registration Number: 1381-246 
 Application Date s: 3/14/22, 3/14/22, 9/17/21 
Decision Numbers: 578557,583723,583724 
 
Dear Ms. Williams: 
 
The Agency, in accordance with the Federal Insecticide, Fungicide and Rodenticide Act 
(FIFRA), as amended, has completed reviewing all the information submitted with your 
application to support the Registration Review of the above referenced product in connection 
with the Fluroxypyr, MCPA and Clopyralid Interim Decisions, and has concluded that your 
submission is acceptable. The label referred to above, submitted in connection with registration 
under FIFRA, as amended, is acceptable. 
 
Should you wish to add/retain a reference to the company’s website on your label, then please be 
aware that the website becomes labeling under the Federal Insecticide Fungicide and Rodenticide 
Act 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) list examples of statements EPA may consider false or misleading. In addition, 
regardless of whether a website is referenced on your product’s 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 EPA’s Office of Enforcement and Compliance. 
 
A stamped copy of your labeling is enclosed for your records. This labeling supersedes 
all previously accepted labeling. You must submit one 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 or sell this product under the previously approved 
labeling for 12 months from the date of this letter. After 12 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.

Page 2 of 2 
EPA Reg. No. 1381-246 
Decision No. 578557,583723,583724 
 
If you have any questions about this letter, please contact DeMariah Koger by phone at (202)-
566-2288, or via email at koger.demariah@epa.gov. 
 
 S i n c e r e l y , 
 
 
       Linda Arrington, Branch Chief 
 Risk Management and Implementation Branch 4 
 Pesticide Re-Evaluation Division 
 Office of Pesticide Programs
 
 
 
 
Enclosure

WELD® Herbicide
ANNUAL AND PERENNIAL BROADLEAF POSTEMERGENCE CONTROL 
IN BARLEY, OATS AND WHEAT NOT UNDERSEEDED WITH A LEGUME
ACTIVE INGREDIENTS:
MCPA-EHE: 2-methyl-4-chlorophenoxyacetic acid, 2-ethylhexyl ester* ............. 3 0 . 7 3 %
Fluroxypyr 1-methylheptyl ester: ((4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy)
a c e t i c a c i d , 1 - m e t h y l h e p t y l e s t e r * * ............................................. 1 0 . 3 7 %
C l o p y r a l i d : 3 , 6 - d i c h l o r o - 2 - p y r i d i n e c a r b o x y l i c a c i d * * * ..................................... 5 . 6 0%
OTHER INGREDIENTS: .................................................... 5 3 . 3 0 %
TOTAL:............................................................................... 1 0 0 . 0 0 %
Contains petroleum distillates 
Equivalent to:
* MCP A A cid ................................................................ 1 9 .7% , 1 .75 Ib /gal
* * F l u r o x y p y r A c i d ...................................................... 7 . 2 % , 0 . 6 4 I b / g a l
***Clopyralid Acid. . . . .. ... .. .. ... .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. 5.6%, 0.50 Ib/gal
KEEP OUT OF REACH OF CHILDREN
CAUTION
FIRST AID
If swallowed x Call a poison control center or doctor immediately for treatment advice.
x Do not induce vomiting unless told to by a poison control center or doctor.
x Do not give any liquid to the person.
x Do not give anything by mouth to an unconscious person.
If in eyes x Hold eye open and rinse slowly and gently with water for 15-20 minutes.
x Remove contact lenses, if present, after the first 5 minutes, then continue 
rinsing.
x Call a poison control center or doctor for treatment advice.
Have the product container or label with you when calling a poison control center or doctor, or 
going for treatment. In case of health emergency, call toll-free 1-877-424-7452.
NOTE TO PHYSICIAN: May pose aspiration pneumonia hazard. Contains petroleum distillate.
See booklet for additional Precautionary Statements, complete Directions for Use, Warranty 
Disclaimer and Limitation of Liability. 
EPA Reg. No. 1381-246 EPA Est. No. ____________ 
Distributed By NET CONTENTS____GALS.
Winfield Solutions, LLC LOT NO. __________
P.O. Box 64589, St. Paul, MN 55164-0589 
 2/0516/2
MCPA, FLUROXYPYR,
CLOPYRALID GROUP 4 HERBICIDE
 
 
 
 
 
 
 
May 9, 2022
1381-246

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PRECAUTIONARY STATEMENTS 
HAZARDS TO HUMANS AND DOMESTIC ANIMALS 
CAUTION: Causes moderate eye irritation. Harmful if swallowed. Avoid contact with eyes or clothing. Wash 
thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using 
the toilet. 
 
PERSONAL PROTECTIVE EQUIPMENT (PPE) 
All mixers, loaders, applicators, flaggers, and other handlers must wear: 
x long-sleeved shirt and long pants 
x shoes plus socks 
x chemical-resistant gloves made of barrier laminate, butyl rubber (> 14 mils), nitrile rubber (> 14 mils), or 
viton (> 14 mils) 
In addition, when mixing, loading, or using any hand-held equipment 
x protective eyewear (goggles, face shield, or safety glasses) 
 
See engineering controls for additional requirements. 
 
Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions for washables exist, use 
detergent and hot water. Keep and wash PPE separately from other laundry. 
 
Engineering Control Statement: 
When handlers use closed systems, enclosed cabs, or aircraft in a manner that meets the requirements listed in 
the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR 170.240(d) (4-6)], the handler PPE 
may be reduced or modified as specified in the WPS. 
 
Pilots must use an enclosed cockpit that meets the requirements listed in the WPS for agricultural pesticides [40 
CFR 170.240(d)(6)]. 
 
Handlers must use closed mixing loading systems during mixing and loading liquids for aerial application to barley, 
oats, and wheat. 
 
USER SAFETY RECOMMENDATIONS 
Users should: 
x Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using 
tobacco or using the toilet. 
x Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing. 
If pesticide gets on skin, wash immediately with soap and water. 
x 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 
This product is toxic to fish, aquatic invertebrates and aquatic plants. Do not apply directly to water, or to areas 
where surface water is present or to intertidal areas below the mean high water mark. Do not contaminate water 
when cleaning equipment or disposing of equipment washwaters. Drift and runoff may be hazardous to aquatic 
organisms in water adjacent to treated areas. Runoff of this product will be reduced by avoiding applications 
when rainfall is forecasted to occur within 48 hours. 
 
GROUNDWATER ADVISORY 
Clopyralid and MCPA are known to leach through soil into groundwater under certain conditions as a result of 
label use. These chemicals may leach into groundwater if used in areas where soils are permeable, particularly 
where the water table is shallow. 
 
SURFACE WATER ADVISORY 
This product may impact surface water quality due to runoff of rain water. This is especially true for poorly 
draining soils and soils with shallow groundwater. 
 
This product is classified as having high potential for reaching surface water via runoff for several weeks after 
application.

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A level, well-maintained vegetative buffer strip between areas to which this product is applied and surface 
water features such as ponds, streams, and springs will reduce the potential loading of clopyralid from runoff 
water and sediment. Runoff of this product will be reduced by avoiding applications when rainfall or irrigation is 
expected to occur within 48 hours. 
 
NON-TARGET ORGANISM ADVISORY 
This product is toxic to plants and may adversely impact the forage and habitat of non-target organisms, 
including pollinators, in areas adjacent to the treated site. Protect the forage and habitat of non-target organisms 
by following label directions intended to minimize spray drift. 
 
DIRECTIONS FOR USE 
It is a violation of Federal law to use this product in a manner inconsistent with its labeling. 
 
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 application. For any requirement specific to your State or Tribe, 
consult the agency responsible for pesticide regulation. 
 
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 intervals. The 
requirements in this box only apply to uses of this product 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 48 
hours. 
 
PPE required for early entry to treated areas that is permitted under the Worker Protection Standard and that 
involves contact with anything that has been treated, such as plants, soil, or water, is coveralls, chemical-
resistant gloves made of barrier laminate, butyl rubber (> 14 mils), nitrile rubber (> 14 mils), or viton (> 14 mils), 
shoes plus socks, and protective eyewear (goggles face shield, or safety glasses). 
 
USE PRECAUTIONS 
x Avoid application where proximity of susceptible crops or other desirable plants is likely to result in exposure 
to spray or spray drift. 
 
USE RESTICTIONS 
x Use Restrictions in the State of New York: This product may not be sold or used in Suffolk and Nassau 
counties in the state of New York and can be used in other counties only for postemergence application with 
a maximum application rate of 15.9 fluid ounces (0.062 pound of clopyralid) per acre per year (with no other 
product containing clopyralid being applied pre-plant or post-plant within the same year). 
x When applying this product, do not contaminate water used for domestic purposes or irrigation ditches. 
x Do NOT apply this product through any type of irrigation system (i.e., chemigation). 
x Do NOT apply this product to wheat, barley, or oat that has been underseeded with a legume. 
x Handlers must use closed mixing loading systems during mixing and loading liquids for aerial application to 
barley, oats and wheat. 
x Do NOT allow spray drift to come in contact with or apply this product directly to susceptible broadleaf plants 
or broadleaf crops, including but not limited to the following: alfalfa, beans, canola, cotton, flowers, grapes, 
lentils, lettuce, mustard, peas, potatoes, radishes, soybeans, sugar beets, sunflowers, tobacco, tomatoes, 
vegetables, or other desirable broadleaf crops or ornamental plants or soil where sensitive crops will be 
planted the same season (refer to the Crop Rotation Intervals section for more information). 
x Do NOT apply more than 0.25 Ib ae/A of fluroxypyr containing products per growing season. 
x Do NOT apply more than 0.12 Ib/A of clopyralid containing products per growing season. 
x Do NOT apply more than 0.75 Ib ae/A of MCPA containing products per year. 
 
Avoid Movement of Treated Soil 
While serious injury is unlikely, wind-blown dust containing clopyralid may produce visible symptoms such as

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epinasty (downward curving or twisting of leaf petioles or stems) when deposited on susceptible plants. 
Avoiding treatment of powdery dry or light sandy soils until soil has been settled by rainfall or irrigation or by 
irrigating shortly after application will help to minimize the potential movement of clopyralid on wind-blown dust. 
 
Residues in Plants and Manure 
Fields that may be planted with susceptible plants the following season must not be composted or mulched with 
plant residues from, or manure of animals grazed on, treated areas (e.g., hay or straw from treated areas, or 
manure or bedding straw from animals that have grazed or consumed forage from treated areas). 
 
Herbicidal decomposition can be enhanced by burning or evenly incorporating plant residues. Clopyralid 
decomposition in crop residues or manure occurs more rapidly in warm, moist soil conditions and may be 
enhanced with supplemental irrigation. 
 
Off-site Compost and Animal Feed/Bedding Restrictions: 
x This product is persistent and may be present in treated plant materials for months to years after application. 
Do not sell or transport treated plant materials or manure from animals that have grazed on treated plant 
materials off-site for compost distribution or for use as animal bedding/feed for 18 months after application. 
x Manure from animals that have grazed or eaten forage or hay harvested from treated areas within the 
previous three days may only be applied to the fields where the following crops will be grown: pasture 
grasses, grass grown for seed, wheat and corn. 
x Animals that have been fed clopyralid and fluroxypyr-treated forage must be fed forage free of clopyralid and 
fluroxypyr for at least 3 days before movement to an area where manure may be collected or sensitive crops 
are grown. 
 
 
 [ ® Copyright 2011 Dow AgroSciences LLC] 
 
For more information on how to manage clopyralid treated materials and to prevent clopyralid from contaminating 
compost please visit https://www.epa.gov/ingredients-used-pesticide-products/registration-review-pyridine-and-
pyrimidine-herbicides#compost. 
 
WEED RESISTANCE MANAGEMENT 
Weld Herbicide is a Group 4 herbicide. Any weed population may contain plants naturally resistant to Group 4 
herbicides. The resistant biotypes may dominate the weed population if these herbicides are used repeatedly in 
the same field. Appropriate resistance-management strategies should be followed. 
 
To delay herbicide resistance, take one or more of the following steps: 
x Rotate the use of this product or other Group 4 herbicides, within a growing season sequence or among 
growing seasons, with different herbicide groups that control the same weeds in a field.

5 
x Use tank mixtures with herbicides from a different group if such use is permitted; where information on 
resistance in target weed species is available use the less resistance-prone partner at a rate that will 
control the target weed(s) equally as well as the more resistance-prone partner. Consult your local 
extension service or certified crop advisor if you are unsure as to which active ingredient is currently less 
prone to resistance. 
x Adopt an integrated weed-management program for herbicide use that includes scouting and uses 
historical information related to herbicide use and crop rotation, and that considers tillage (or other 
mechanical control methods), cultural (e.g., higher crop seeding rates; precision fertilizer application 
method and timing to favor the crop and not the weeds), biological (weed-competitive crops or varieties) 
and other management practices. 
x Scout fields prior to application to identify the weed species present and their growth stage to determine if 
the intended application will be effective. 
x Scout fields after herbicide application to monitor weed populations for early signs of resistance 
development. Indicators of possible herbicide resistance include: 
o Failure to control a weed species normally controlled by the herbicide at the dose applied, 
especially if control is achieved on adjacent weeds. 
o A spreading patch of non-controlled plants of a particular weed species. 
o Surviving plants mixed with controlled individuals of the same species. 
If resistance is suspected, prevent weed seed production in the affected area by an alternative herbicide 
from a different group or by a mechanical method such as hoeing or tillage. Prevent movement of 
resistant weed seeds to other fields by cleaning harvesting and tillage equipment when moving between 
fields, and planting clean seed. 
x If a weed pest population continues to progress after treatment with this product, discontinue use of this 
product, and switch to another management strategy or herbicide with a different mode of action, if 
available. 
x Contact your local extension specialist, certified crop advisors, and/or Winfield Solutions, LLC 
representative for pesticide resistance management and/or integrated weed management 
recommendations for specific crops and resistant weed biotypes. 
x For further information or to report suspected resistance, contact your Winfield Solutions, LLC 
representative. 
 
SPRAY DRIFT MANAGEMENT 
Avoiding spray drift at the application site is the responsibility of the applicator. The interaction of many 
equipment-and-weather-related factors determine the potential for spray drift. The applicator and the grower are 
responsible for considering all these factors when making decisions. 
 
Spray pattern and droplet size distribution can be evaluated by applying sprays containing a water-soluble dye 
marker or appropriate drift control agents over a paper tape (adding machine tape). Mechanical flagging devices 
may also be used. 
 
MANDATORY SPRAY DRIFT MANAGEMENT 
Aerial Applications: 
x Do not release spray at a height greater than 10 ft above the ground or vegetative canopy, unless a 
greater application height is necessary for pilot safety. 
x Applicators are required to select a nozzle and pressure combination that delivers a medium or coarser 
droplet size (ASABE S641). 
x Do not apply when wind speeds exceed 15 mph at the application site. If the wind speed is greater than 
10 mph, the boom length must be 65% or less of the wingspan for fixed-wing aircraft and 75% or less of 
the rotor diameter for helicopters. Otherwise, the boom length must be 75% or less of the wingspan for 
fixed-wing aircraft and 90% or less of the rotor diameter for helicopters. 
x If the wind speed is 10 miles per hour or less, applicators must use ½ swath displacement upwind at the 
downwind edge of the field. When the wind speed is between 11-15 miles per hour, applicators must 
use ¾ swath displacement upwind at the downwind edge of the field. 
x Do not apply during temperature inversions. 
Ground Boom Applications: 
x Appl y with the release height no more than 3 feet above the ground or crop canopy.

6 
x Applicators are required to select a nozzle and pressure combination that delivers a medium or coarser 
droplet size (ASABE S572). 
x Do not apply when wind speeds exceed 15 mph at the application site. 
x Do not apply during temperature inversions. 
Boom-less Ground Sprayer Applications: 
x Applicators are required to select a nozzle and pressure combination that delivers a medium or coarser 
droplet size (ASABE S572) for all applications. 
x Do not apply when wind speeds exceed 15 miles per hour at the application site. 
x Do not appl y during temperature inversions. 
 
SPRAY DRIFT ADVISORIES 
THE APPLICATOR IS RESPONSIBLE FOR AVOIDING OFF-SITE SPRAY DRIFT. BE AWARE OF NEARBY 
NON-TARGET SITES AND ENVIRONMENTAL CONDITIONS. 
 
Importance of Droplet Size 
An effective way to reduce spray drift is to apply large droplets. Use the largest droplets that provide target pest 
control. While applying larger droplets will reduce spray drift, the potential for drift will be greater if applications 
are made improperly or under unfavorable environmental conditions. 
 
Controlling Droplet Size – Ground Boom 
x Volume - Increasing the spray volume so that larger droplets are produced will reduce spray drift. 
Use the highest practical spray volume for the application. If a greater spray volume is needed, 
consider using a nozzle with a higher flow rate. 
x Pressure - Use the lowest spray pressure recommended for the nozzle to produce the target spray 
volume and droplet size. 
x Spray Nozzle - Use a spray nozzle that is designed for the intended application. Consider using 
nozzles designed to reduce drift. 
 
Controlling Droplet Size – Aircraft 
x Adjust Nozzles - Follow nozzle manufacturers’ recommendations for setting up nozzles. Generally, 
to reduce fine droplets, nozzles should be oriented parallel with the airflow in flight. 
 
Boom Height – Ground Boom 
For ground equipment, the boom should remain level with the crop and have minimal bounce. 
 
Release Height - Aircraft 
Higher release heights increase the potential for spray drift. 
 
Handheld Technology Applications 
Take precautions to minimize spray drift. 
 
Shielded Sprayers 
Shielding the boom or individual nozzles can reduce spray drift. Consider using shielded sprayers. Verify that 
the shields are not interfering with the uniform deposition of the spray on the target area. 
 
Boomless Ground Applications 
Setting nozzles at the lowest effective height will help to reduce the potential for spray drift . 
 
Temperature and Humidity 
When making applications in hot and dry conditions, use larger droplets to reduce effects of evaporation. 
 
Temperature Inversions 
Drift potential is high during a temperature inversion. Temperature inversions are characterized by increasing 
temperature with altitude and are common on nights with limited cloud cover and light to no wind. The presence 
of an inversion can be indicated by ground fog or by the movement of smoke from a ground source or an aircraft 
smoke generator. Smoke that layers and moves laterally in a concentrated cloud (under low wind conditions) 
indicates an inversion, while smoke that moves upward and rapidly dissipates indicates good vertical air mixing.

7 
Wind 
Drift potential generally increases with wind speed. Applicators need to be familiar with local wind patterns and 
terrain that could affect spray drift. 
 
CROP ROTATION INTERVALS 
Because residues of this product in treated plant tissues (including the treated crop or weeds) can impact crops 
planted after treatment, be sure to refer to the following crop rotation tables before rotating to susceptible crops. 
 
Note: The intervals listed below are based on average annual precipitation regardless of irrigation practices. 
Rotational crops should be grown safely if the recommended crop rotation intervals listed below are observed. It 
is important to realize, however, that accurate prediction of rotated crop safety is not possible because this 
product dissipates in the soil by microbial activity and the rate of microbial activity is dependent on several 
interrelating factors including soil moisture, temperature and organic matter. Prior to planting sensitive crops in 
areas of low organic matter (e.g., less than 2.0%) and less than 15 inches average annual precipitation, the 
potential for crop injury may be reduced by removing or burning treated plant residues, supplemental fall 
irrigation and deep mold board plowing. 
 
ALL STATES EXCEPT CALIFORNIA, IDAHO, NEVADA, OREGON, UTAH AND WASHINGTON 
 Rotation Interval 
Rotation Crops1 
 
More than 15 inches of 
rainfall during the 12 months 
following application 
AND 
Soils greater than 2% 
organic matter 
Less than 15 inches of 
rainfall during the 12 
months following 
application 
AND 
Soils less than 2% organic 
matter 
Broadleaf Crops grown for seed (excluding Brassica 
species), Lentils, Peas, Potatoes (including potatoes 
grown for seed) 
18 months
2 
 
18 months2,3 
 
Dry beans, Soybeans, Sunflower 10.5 months 18 months 2 
Alfalfa, Asparagus, Grain Sorghum, Mint, Onions, 
Safflower, Strawberries 
10.5 months 10.5 months 
Canola (Rapeseed), Cole Crops (Brassica species), 
Flax, Garden Beet, Popcorn, Spinach, Sugarbeet, 
Turnip 
120 days 120 days 
Field Corn, Sweet Corn 60 days 60 days 
Barley, Grasses, Oats, Wheat No interval required No interval required 
 
1) Following application of this product, do not rotate to unlisted crops with less than a 10.5 month rotation 
interval. Prior to planting any broad leaf crops that are not listed above, perform a field bioassay (refer to the 
bioassay instructions below). 
2) Due to the potential for crop injury, 18 month rotation intervals are recommended. Note: For these crops, a 
minimum 10.5 month rotation interval must be observed to avoid illegal residues in the harvested crop. 
3) Because these are sensitive crops, a field bioassay is recommended prior to planting (refer to the bioassay 
instructions below). 
 
CALIFORNIA, IDAHO, NEVADA, OREGON, UTAH AND WASHINGTON 
 Rotation Interval 
Rotation Crops1 
 
More than 18 inches of 
rainfall during the 12 months 
following application 
NOT including irrigation 
 
Less than 18 inches of 
rainfall during the 12 
months following 
application 
NOT including irrigation

8 
Broadleaf Crops grown for seed (excluding Brassica 
species), Carrots2, Celery2, Cotton2, Lentils, Lettuce2, 
Melons2, Peas, Potatoes (including potatoes grown 
for seed), Safflower, Tomatoes2 
18 months2 
 
18 months2,3 
 
Alfalfa, Dry Beans, Soybean, Sunflower 12 months 18 months 2,3 
Asparagus, Grain Sorghum, Mint, Onions, 
Strawberries 
 
12 months 
 
12 months 
 
Canola (Rapeseed), Cole Crops (including Brassica 
spp. grown for seed), Flax, Garden Beet, Popcorn, 
Spinach, Sugarbeet, Turnip 
120 days 120 days 
Field Corn, Sweet Corn 60 days 60 days 
Barley, Grasses, Oats, Wheat No interval required No interval required 
 
1) Following application of this product, do not rotate to unlisted crops with less than a 12 month rotation 
interval. Prior to planting any broadleaf crops that are not listed above, perform a field bioassay (refer to the 
bioassay instructions below). 
2) Due to the potential for crop injury, 18-month rotation intervals are recommended. Note: For these crops, a 
minimum 12 month rotation interval must be observed to avoid illegal residues in the harvested crop. 
3) Crop injury and / or yield loss may occur up to 4 years after application. Because these are sensitive crops, a 
field bioassay is recommended prior to planting (refer to the bioassay instructions below). 
 
Instructions for Field Bioassays 
In fields previously treated with this product, crop sensitivity can be confirmed by conducting a field bioassay 
using the following instructions: 
 
1) Any time between harvest of the treated crop and the planting of the intended rotational crop, plant short test 
rows of the intended rotational crop so as to sample variability in field conditions such as soil texture, soil 
organic matter, soil pH, and / or drainage. 
 
2) Observe the test crop for herbicidaI activity, such as poor stand (effect on seed germination), chlorosis 
(yellowing), necrosis (dead leaves or shoots) or stunting (reduced growth). 
 
The test crop can be grown only if herbicidal symptoms are not observed. 
 
If there is apparent herbicidal activity, do not plant the field to the test rotational crop. Only a labeled crop for 
which the rotational interval has clearly been met can be planted. 
 
Sprayer Clean-Out 
To avoid injury to desirable plants, before applying other chemicals with the equipment used to apply this 
product, all equipment must be thoroughly cleaned. 
1. After applying this product, flush and rinse application equipment with water thoroughly at least 3 times. 
Rinse water may be disposed of by application to treatment areas or in non-cropland areas away from water 
supplies. 
2. For the second rinse, add 1 quart of household ammonia for every 25 gallons of water. Circulate the solution 
through the entire system so that all internal surfaces are exposed to the ammonia water solution (15 to 20 
minutes). Let the solution stand in the equipment for several hours (preferably overnight). 
3. Flush the solution out of the spray tank through the boom. 
4. Rinse the system twice with clean water, recirculating and draining each time. 
5. Remove and clean separately all nozzles and screens.

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MIXING INSTRUCTIONS 
Note: When adding ingredients to the mixture, allow time for each ingredient to be thoroughly mixed before 
adding the next. Be sure to agitate spray mixture before use if allowed to stand after mixing. 
 
1. Fill spray tank with water equal to 1/2 to 3/4 of the required spray volume and start agitation. 
2. Add the specified amount of this product. 
3. Add any surfactants, adjuvants or drift control agents according to the respective manufacturer's 
instructions. 
4. Agitate during final filling of the spray tank with water and maintain sufficient agitation during application to 
ensure uniformity of the spray mixture. 
 
Tank Mixing 
This product may be tank mixed with labeled rates of other products provided the tank mix partner products are 
labeled for the timing and method of application for the use site to be treated and tank mixing with products 
containing fluroxypyr or clopyralid is not prohibited by the label(s) of the tank mix partner products. It is the 
pesticide user’s responsibility to ensure that all products in the listed mixtures are registered for the intended 
use. Users must follow the most restrictive directions for use and precautionary statements of each product in 
the tank mixture. 
 
Tank Mixing Precautions 
x Be sure to follow all applicable use directions, precautions, and limitations on the respective product labels. 
x Do not exceed specified application rates. Do not tank mix with other pesticide products that contain the 
same active ingredient as this product unless the label of either mix partner specifies the maximum dosages 
that may be applied. 
x For products packaged in water soluble packaging, do not tank mix with products containing boron or mix in 
equipment previously used to apply a product mixture containing boron unless the tank and spray has been 
adequately cleaned (refer to the Sprayer Clean-Out section above). 
x Prior to final use, perform a (jar) test to verify the compatibility of tank mix partner products (see instructions 
below). 
 
Tank Mix Compatibility Testing (Jar Test) 
The following jar test is recommended prior to tank mixing to ensure the compatibility of this product with other 
tank mix partner products: 
1. Mix the desired tank mix ingredients in their relative proportions in a clear glass quart jar with lid. 
2. Invert the jar containing the mixture several times and observe the mixture for approximately 1/2 hour. 
3. If the mixture balls-up, forms flakes, sludges, gels, oily films or layers, or other precipitates, it is not 
compatible and the tank mix combinations must not be used. 
 
Tank Mixing Instructions 
1. Fill spray tank with water to 1/2 to 3/4 of the required spray volume. 
2. Start agitation and maintain agitation continuously during mixing, final filling and while applying. 
3. Add different formulation types in the following order being sure to allow sufficient time for each product to 
completely mix and disperse after addition (Note: This product is an emulsifiable concentrate (EC) 
formulation): 
a) Dry flowables 
b) Wettable powders 
c) Aqueous suspensions 
d) Flowables or liquids 
4. Maintain agitation and fill spray tank to 3/4 of total spray volume and then add this product and other 
emulsifiable concentrates and any solutions. 
5. Finish filling the spray tank. 
6. While spraying, the tank mix ingredients may settle out of suspension if agitation is stopped before the spray 
tank is empty. The settled materials must be resuspended before any spraying is resumed and a sparger 
agitator works particularly well in this situation. Settled material may be more difficult to resuspend than 
when originally mixed.

10 
APPLICATION INFORMATION 
Apply this product for postemergence control of annual and perennial broadleaf weeds in wheat, barley 
and oats not underseeded with a legume. 
 
Broadleaf Weeds Controlled or Suppressed 
Alfalfa, volunteer (from seed) 
Alfalfa, volunteer (perennial plants)* 
Artichoke, Jerusalem1 
Beans, volunteer 
Bedstraw (cleavers)2 
Bindweed, field* 
Buckwheat, wild3 
Buffalobur 
Canola, volunteer 
Chamomile, false (scentless) 
Chamomile, mayweed (dogfennel) 
Chickweed 
Clover, black medic 
Clover, hop 
Clover, red 
Clover, sweet 
Clover, white 
Cocklebur, common
1 
Cornflower (bachelor button) 
Dandelion 
Dock, curly 
Flax, volunteer 
Flixweed 
Hawksbeard, narrowleaf 
Hawkweed, orange 
Hawkweed, yellow 
Hemp dogbane 
Horseweed (marestail), field 
Horsetail
* 
Jimsonweed1 
Knotweed* 
Kochia4 
Ladysthumb 
Lambsquarters, common 
Lentils, volunteer 
Lettuce, prickly 
Mallow, common 
Mallow, Venice 
Marshelder
1 
Morning glory 
Mustard, tumble (Jim Hill) 
Mustard, wild 
Nightshade, black5 
Nightshade, cutleaf5 
Nightshade, Eastern black5 
Nightshade, hairy5 
Peas, volunteer 
Pennycress, field 
Pigweed, redroot 
Pineappleweed 
Potato, volunteer* 
Puncturevine 
Purslane, common 
Ragweed, common1 
Ragweed, giant1 
Salsify, meadow (goatsbeard) 
Shepherdspurse 
Smartweed, green5 
Smartweed, Pennsylvania5 
Sowthistle, annual 
Sowthistle, perennial6* 
Starthistle, yellow 
Sunflower1 
Tansymustard, pinnate 
Teasel, common 
Thistle, bull 
Thistle, Canada
6 
Thistle, musk 
Thistle, Russian 
Velvetleaf 
Vetch 
Wormwood, biennial 
 
 
* Indicates Suppression Only - Suppression is a reduction in weed competition (reduction is population or vigor) 
as compared to untreated areas. The degree of weed control and duration of effect may vary with weed size, 
density, application rate, coverage, and growing conditions before, during and after treatment. 
 
1) Apply up to 5 leaf stage of growth for best results. 
2) Apply in the 1 to 4 whorl stage of growth for best results. 
3) Apply in the 1 to 4 leaf stage of growth (before vining) for best results. 
4) Includes herbicide resistant or tolerant biotypes. Apply when weeds are 1 to 4 inches tall for best results. 
5) Apply at the 2 to 4 leaf stage of growth for best control or suppression. 
6) Apply from rosette to bud (pre-flower) stage of growth for best control or suppression. 
 
Perennial Weeds 
This product controls initial top growth and inhibits regrowth during the season it is applied. It may also reduce 
shoot regrowth in the season following application when used at the higher rates listed in this label; however, 
due to variability of shoot regrowth from perennial root systems, plant response may be inconsistent. 
 
Management of Kochia Biotypes 
Research indicates many biotypes of kochia may occur within a single field and while kochia biotypes can vary 
in their susceptibility to this product, in general all biotypes less than 4 inches in height will be suppressed or 
controlled with 1 to 1.5 pints per acre of this product. A shift to more tolerant biotypes within a field may occur if 
this product is applied at rates lower than specified. 
 
Best Practices for Resistance Management 
Extensive populations of dicamba-tolerant kochia have been identified in certain small grain and corn production 
regions (such as Chouteau, Fergus, Liberty, Toole, and Treasure counties in the state of Montana). For optimal 
control of dicamba-tolerant kochia in these counties, apply this product at the rate of 1.5 to 2 pints per acre. For 
improved control of dicamba-tolerant kochia, this product may be tank mixed with a reduced rate of fluroxypyr

11 
(refer to the section "For Improved Control of Dicamba-Tolerant Kochia" on this label). 
 
To minimize selection pressure and preserve the utility of this product for control of dicamba-tolerant kochia 
biotypes, rotate this product with products that do not contain dicamba. 
 
Application Timing 
Only weeds that have emerged at the time of application will be controlled so be sure to apply to actively 
growing weeds. Weed control may be reduced and the risk of crop injury (at all stages of growth) may increase 
if extreme growing conditions (such as drought or near-freezing temperatures) occur prior to, at, or following 
application. Control may be decreased if target plant foliage is wet at the time of application. Applications of this 
product are rainfast within 6 hours after application. 
 
Effect of Temperature on Herbicidal Activity 
The herbicidal activity of this product is influenced by weather conditions optimum herbicidal activity between 
55°F to 75°F and reduced efficacy occurring when temperatures are below 45°F or above 85°F. Weed control 
and crop tolerance may be reduced if frost occurs before or shortly after application (3 days). 
 
Spray Coverage 
Use sufficient spray volume to provide thorough coverage and a uniform spray pattern. For best results (and to 
minimize spray drift), apply in a spray volume of 10 gallons or more per acre and do not broadcast apply in less 
than 3 gallons of total spray volume per acre. Increase spray volume as weed density and vegetative canopy 
increase in order to obtain equivalent weed control. 
 
Use only nozzle types and spray equipment designed for herbicide application. To reduce spray drift, be sure to 
follow the restrictions and precautions under the heading, SPRAY DRIFT MANAGEMENT. 
 
Only apply spot treatments with a calibrated boom to prevent overapplication. 
 
Adjuvants 
To achieve satisfactory weed control, this product does not usually require the use of an adjuvant. An adjuvant 
may, however, optimize herbicidal activity when applications are made at lower use rates, lower carrier volumes, 
under conditions of cool temperature, low relative humidity or drought, or to small, heavily pubescent kochia. 
 
A drift control or spray thickening agent may be used with this product to improve spray deposition and minimize 
the potential for spray drift. If used, follow all use recommendations and precautions on the product label. 
 
When an adjuvant is to be used with this product, Winfield Solutions, LLC recommends the use of a Council of 
Producers & Distributors of Agrotechnology certified adjuvant. When an adjuvant is to be used with this product, 
Winfield Solutions, LLC recommends the use of a certified adjuvant. 
 
Use with Sprayable Liquid Fertilizer Solutions 
This product is compatible with most non-pressurized liquid fertilizer solutions. However, prior to mixing, perform 
a compatibility test (jar test), especially when a new batch of fertilizer or pesticides is used, when the water 
source changes, or when tank mixture ingredients or concentrations are changed. Refer to the Tank Mix 
Compatibility Testing section above for specific instructions. 
 
When mixing with a sprayable liquid fertilizer, using a compatibility aid may help obtain and maintain a uniform 
spray solution during mixing and application. For best results, do not exceed 50% liquid fertilizer of the total 
spray volume. Premix this product with water and add to the liquid fertilizer/water mixture while agitating 
contents of the spray tank. To compare with jar test agitation, the agitation in the spray tank must be vigorous. 
Apply the spray the same day it is prepared being sure to maintain continuous agitation. 
 
NOTE: Leaf-burn or yellowing of crop foliage may occur when foliar-applied liquid fertilizers are used as a 
carrier.

12 
WHEAT (INCLUDING DURUM), BARLEY, OATS 
Application Restrictions 
x Do NOT apply if the cereal crop is underseeded with a legume. 
x Do NOT allow livestock to graze treated areas or harvest treated forage within 7 days of application. 
x Do NOT apply more than 0.25 Ib ae/A of fluroxypyr containing products per growing season. 
x Do NOT apply more than 0.12 Ib/A of clopyralid containing products per growing season. 
x Do NOT apply more than 3.4 pts. or 0.75 Ib ae/A of MCPA containing products per year. 
x Preharvest Interval: Do not apply closer than 14 days before cutting of hay or 40 days before harvesting of 
grain and straw. 
 
Application Timing 
To control listed broadleaf weeds, apply as a postemergence broadcast treatment to actively growing wheat, 
barley or oats from the 3 leaf stage up to and including flag leaf emergence (Zadoks scale 39). Because only 
weeds that have emerged at the time application will be controlled, be sure to apply when weeds are actively 
growing but before weeds are 4 inches tall or vining. Consult the Broadleaf Weeds Controlled or Suppressed 
section for additional information on weed sizes. 
 
For perennial weeds (such as Canada thistle), apply when the majority of the basal leaves have emerged from 
the soil up to bud stage to obtain season-long control. 
 
To suppress volunteer potatoes, apply before potato plants are 4 inches tall. 
 
Broadcast Application Rates 
For young, succulent growth of susceptible weed species less than 4 inches tall, apply 1 to 1.5 pints of this 
product per acre. Best control of kochia is achieved when kochia is at least 1 inch tall and not taller than 4 
inches. For dicamba resistant kochia and volunteer potatoes use 1.5 to 2 pints per acre. Tank mixes with 
additional herbicides may be necessary when controlling less sensitive species, some perennials, and under 
conditions where control is more difficult (plant stress conditions such as drought or extreme temperatures, 
dense weed stands and/or larger weeds). 
 
For Improved Control of Dicamba-Tolerant Kochia 
Mix 0.03 pound active ingredient fluroxypyr per acre with the specified amount of this product. 
 
Tank Mixtures for Wheat (including Durum), Barley, Oats 
This product may be applied in tank mix combination with labeled rates of other products registered for 
postemergence application in wheat, barley, and oats. Be sure that you do not exceed specified application 
rates and use only in accordance with the most restrictive precautions and limitations on the respective product 
labels when tank mixing. Refer to the Tank Mixing Precautions section under Mixing Instructions for additional 
information. It is the pesticide user’s responsibility to ensure that all products in the listed mixtures are 
registered for the intended use. Users must follow the most restrictive directions for use and precautionary 
statements of each product in the tank mixture. 
 
STORAGE AND DISPOSAL 
Do not contaminate water, food or feed by storage or disposal. 
PESTICIDE STORAGE: Store above 10°F or warm and agitate before use. 
PESTICIDE DISPOSAL: Pesticide wastes are toxic. Improper disposal of excess pesticide, spray mixture, or 
rinsate is a violation of Federal Law. If these wastes cannot be disposed of by user according to label 
instructions, contact your State Pesticide or Environmental Control Agency, or the Hazardous Waste 
representative at the nearest EPA Regional Office for guidance. 
CONTAINER DISPOSAL: 
Nonrefillable Containers 5 Gallons or Less: Nonrefillable container. Do not reuse or refill this container. Triple 
rinse container (or equivalent) promptly after emptying. Triple rinse as follows: Empty the remaining 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. Then offer for recycling or reconditioning, or puncture and dispose of in a sanitary landfill, or by 
other procedures approved by State and local authorities. Plastic containers are also disposable by incineration, 
or, if allowed by State and local authorities, by burning. If burned, stay out of smoke. 
Nonrefillable Containers larger than 5 Gallons: Nonrefillable container. Do not reuse or refill this container.

13 
Offer for recycling if available. Triple rinse or pressure rinse container (or equivalent) promptly after emptying. 
Triple rinse as follows: Empty the remaining contents into application equipment or a mix tank. Fill the container 
1/4 full with water. Replace and tighten closures. Tip container on its side and roll it back and forth, ensuring at 
least one complete revolution, for 30 seconds. Stand the container on its end and tip it back and forth several 
times. Turn the container over onto its other end and tip it back and forth several times. Empty the rinsate into 
application equipment or a mix tank or store rinsate for later use or disposal. Repeat this procedure two more 
times. Pressure rinse as follows: Empty the remaining contents into application equipment or a 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 seconds. Drain for 10 seconds after the flow begins to drip. 
Then offer for recycling if availa ble or puncture and di spose of in a sanitary landfill , or by incineration, or, if 
allowed by state and local authorities, by burning. If burned, stay out of smoke. 
Refillable container larger than 5 gallons: Refillable container. Refill this container with pesticide only. Do not 
reuse this container for any other purpose. Cleaning the container before final disposal is the responsibility of 
the person disposing of the container. Cleaning before refilling is the responsibility of the refiller. To clean the 
container before final disposal, empty the remaining contents from this container into application equipment or a 
mix tank. Fill the container about 10% full with water and, if possible, spray all sides while adding water. If 
practical, agitate vigorously or recirculate water with the pump for two minutes. Pour or pump rinsate into 
application equipment or rinsate collection system. Repeat this rinsing procedure two more times. Then offer for 
recycling if available or puncture and dispose of in a sanitary landfill, or by incineration, or, if allowed by State 
and local authorities, by burning. If burned, stay out of smoke. 
 
FOR CHEMICAL EMERGENCY: Spill, leak, fire, exposure or accident, call 
CHEMTREC 1-800-424-9300. 
 
WARRANTY DISCLAIMER 
The directions for use of this product must be followed carefully. TO THE EXTENT CONSISTENT WITH 
APPLICABLE LAW, (1) THE GOODS DELIVERED TO YOU ARE FURNISHED “AS IS” BY MANUFACTURER 
OR SELLER AND (2) MANUFACTURER AND SELLER MAKE NO WARRANTIES, GUARANTEES, OR 
REPRESENTATIONS OF ANY KIND TO BUYER OR USER, EITHER EXPRESS OR IMPLIED, OR BY USAGE 
OF TRADE, STATUTORY OR OTHERWISE, WITH REGARD TO THE PRODUCT SOLD, INCLUDING, BUT 
NOT LIMITED TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, USE, OR ELIGIBILITY 
OF THE PRODUCT FOR ANY PARTICULAR TRADE USAGE. UNINTENDED CONSEQUENCES, 
INCLUDING BUT NOT LIMITED TO INEFFECTIVENESS, MAY RESULT BECAUSE OF SUCH FACTORS AS 
THE PRESENCE OR ABSENCE OF OTHER MATERIALS USED IN COMBINATION WITH THE GOODS, OR 
THE MANNER OF USE OR APPLICATION, INCLUDING WEATHER, ALL OF WHICH ARE BEYOND THE 
CONTROL OF MANUFACTURER OR SELLER AND ASSUMED BY BUYER OR USER. THIS WRITING 
CONTAINS ALL OF THE REPRESENTATIONS AND AGREEMENTS BETWEEN BUYER, MANUFACTURER 
AND SELLER, AND NO PERSON OR AGENT OF MANUFACTURER OR SELLER HAS ANY AUTHORITY TO 
MAKE ANY REPRESENTATION OR WARRANTY OR AGREEMENT RELATING IN ANY WAY TO THESE 
GOODS. 
LIMITATION OF LIABILITY 
TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, IN NO EVENT SHALL MANUFACTURER OR 
SELLER BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OR FOR DAMAGES IN 
THE NATURE OF PENALTIES RELATING TO THE GOODS SOLD, INCLUDING USE, APPLICATION, 
HANDLING, AND DISPOSAL. MANUFACTURER OR SELLER SHALL NOT BE LIABLE TO BUYER OR USER 
BY WAY OF INDEMNIFICATION TO BUYER OR TO CUSTOMERS OF BUYER, IF ANY, OR FOR ANY 
DAMAGES OR SUMS OF MONEY, CLAIMS OR DEMANDS WHATSOEVER, RESULTING FROM OR BY 
REASON OF, OR RISING OUT OF THE MISUSE, OR FAILURE TO FOLLOW LABEL WARNINGS OR 
INSTRUCTIONS FOR USE, OF THE GOODS SOLD BY MANUFACTURER OR SELLER TO BUYER. ALL 
SUCH RISKS SHALL BE ASSUMED BY THE BUYER, USER, OR ITS CUSTOMERS. BUYER’S OR USER’S 
EXCLUSIVE REMEDY, AND MANUFACTURER’S OR SELLER’S TOTAL LIABILITY SHALL BE FOR 
DAMAGES NOT EXCEEDING THE COST OF THE PRODUCT. 
If you do not agree with or do not accept any of directions for use, the warranty disclaimers, or limitations on 
liability, do not use the product, and return it unopened to the Seller, and the purchase price will be refunded. 
WELD® is a registered trademark of Winfield Solutions, LLC.