crop-chem-docs/corpus/epa_ppls/352-854.md

# BASIS BLEND

- EPA Reg No: **352-854**
- Registrant: CORTEVA AGRISCIENCE, LLC
- Signal word: Caution
- Active ingredients: Thifensulfuron (10%); Rimsulfuron (20%)
- Label accepted: 2025-07-01
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000352-00854-20250701.pdf

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1
July 1, 2025
Wes Marchione
US CP Regulatory Leader
Corteva Agriscience LLC
9330 Zionsville Road
Indianapolis, Indiana 46268
Subject: PRIA Label Amendment – Add INZEN grain sorghum to the uses.
Product Name: Basis Blend
 EPA Registration Number: 352-854
Application Date: 03/25/2024
Case Number: 00559407
Dear Wes Marchione:
The amended label referred to above, submitted in connection with registration under the 
Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), as amended, is acceptable. This 
approval does not affect any conditions that were previously imposed on this registration. You 
continue to be subject to existing conditions on your registration and any deadlines connected 
with them.
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 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 company’s 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 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

Page 2 of 2 
EPA Reg. No. 352-854
Case No. 00559407
claims substantially differing from the EPA approved registration, the website will be referred 
to the EPA’s Office of Enforcement and Compliance.
Your release for shipment of the product constitutes acceptance of these conditions. If these 
conditions are not complied with, the registration will be subject to cancellation in accordance 
with FIFRA section 6. 
If you have any questions, please contact Francisco Llarena-Arias at llarena-
arias.francisco@epa.gov.
Sincerely, 
Francisco Llarena-Arias
Acting for Product Manager 24 
Fungicide and Herbicide Branch 
Registration Division (7505P) 
U.S. Environmental Protection Agency
Enclosure 
erely, 
i Ll
 A i

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 1 
(Base Label): 
RIMSULFURON GROUP 2 HERBICIDE 
THIFENSULFURON-METHYL GROUP 2 HERBICIDE 
Basis® Blend 
[Alternate Brand Name: DuPont Basis® Blend] 
HERBICIDE 
Water Dispersible Granules 
For fallow, preemergence and postemergence use in Field Corn and preplant use in Seed Corn 
and Soybeans and Inzen
TM grain sorghum 
Active Ingredients B y Weight 
Rimsulfuron 
N-((4,6-dimethoxypyrimidin-2-yl)aminocarbonyl)-3-(ethylsulfonyl)- 
2-pyridinesulfonamide 20.0% 
Thifensulfuron-methyl 
Methyl 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) amino]carbonyl]amino]sulfonyl]-2-
thiophenecarbox
ylate 10.0% 
Other Ingredients 70.0% 
TOTAL 100.0% 
Contains 0.30 lb active ingredient per lb of product (0.20 lb ai rimsulfuron and 0.10 lb ai thifensulfuron-
methyl). 
Keep Out of Reach of Children 
CAUTION 
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en detalle. (If you DO 
NOT understand this label, find someone to explain it to you in detail.) 
Precautionary Statements
Hazards to Humans and Domestic Animals 
CAUTION 
Avoid contact with skin, 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) 
Applicators and other handlers must wear: 
x Long-sleeve shirt and long pants 
x Waterproof gloves 
x Shoes plus socks 
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. 
Jul 01, 2025
352-854

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 2 
 
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, the handler PPE requirements may be reduced or modified as specified in the WPS [40 CFR 
170.607(d-f)]. 
 
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: 
x Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on 
clean clothing. 
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. 
 
STORAGE AND DISPOSAL 
 
DO NOT contaminate water, food, or feed by storage and disposal. 
 
PESTICIDE STORAGE: Store product in original container only. DO NOT contaminate water, other 
pesticides, fertilizer, food or feed in storage. Store in a cool, dry place. 
 
PESTICIDE DISPOSAL: DO NOT contaminate water, food, or feed by disposal. Waste resulting from 
the use of this product must be disposed of on site or at an approved waste disposal facility. 
 
CONTAINER HANDLING: Refer to the Net Contents section of this product’s labeling for the 
applicable “Nonrefillable Container” or “Refillable Container” designation. 
 
Nonrefillable Plastic and Metal Containers (Capacity Equal to or Less Than 50 Pounds): 
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. 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, for Plastic 
Containers, offer for recycling if available or puncture and dispose of in a sanitary landfill, or by 
incineration. DO NOT burn, unless allowed by state and local ordinances. For Metal Containers, offer for 
recycling 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 
 
Nonrefillable Plastic and Metal Containers (Capacity Greater Than 50 Pounds): 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.
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. Then, for Plastic Containers, offer for recycling if 
available or puncture and dispose of in a sanitary landfill, or by incineration. DO NOT burn, unless 
allowed by state and local ordinances. For Metal Containers, offer for recycling 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 
 
Nonrefillable Plastic and Metal Containers, e.g., Intermediate Bulk Containers [IBC] (Size or 
Shape Too Lar
ge to be Tipped, Rolled or Turned Upside Down): Nonrefillable container. DO NOT

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 3 
 
reuse or refill this container. Clean container promptly after emptying the contents from this container 
into application equipment or mix tank and before final disposal using the following pressure rinsing 
procedure. Insert a lance fitted with a suitable tank cleaning nozzle into the container and ensure that 
the water spray thoroughly covers the top, bottom and all sides inside the container. The nozzle 
manufacturer generally provides instructions for the appropriate spray pressure, spray duration and/or 
spray volume. If the manufacturer’s instructions are not available, pressure rinse the container for at 
least 60 seconds using a minimum pressure of 30 PSI with a minimum rinse volume of 10% of the 
container volume. Drain, pour or pump rinsate into application equipment or rinsate collection system. 
Repeat this pressure rinsing procedure two more times. Then, for Plastic Containers, offer for recycling i
f 
available or puncture and dispose of in a sanitary landfill, or by incineration. For Metal Containers, offer 
for recycling 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. 
 
Nonrefillable Paper or Plastic Bags, Fiber Sacks including Flexible Intermediate Bulk Containers 
(FIBC) or Fiber Drums With Liners: Nonrefillable container. DO NOT reuse or refill this container. 
Completely empty paper or plastic bag, fiber sack or drum liner by shaking and tapping sides and botto
m
to loosen clinging particles. Empty residue into application or manufacturing equipment. Then offer for 
recycling if available or dispose of empty paper or plastic bag, fiber sack or fiber drum and liner in a 
sanitary landfill, or by incineration. DO NOT burn, unless allowed by state and local ordinances. 
 
Refillable Fiber Drums With Liners: Refillable container (fiber drum only). Refilling Fiber Drum: 
Refill this fiber drum with Basis Blend containing rimsulfuron and thifensulfuron-methyl only. DO NOT 
reuse this fiber drum for any other purpose. Cleaning before refilling is the responsibility of the refiller. 
Completely empty liner by shaking and tapping sides and bottom to loosen clinging particles. Empty 
residue into application or manufacturing equipment. Disposing of Fiber Drum and/or Liner: DO NOT 
reuse this fiber drum for any other purpose other than refilling (see preceding). Cleaning the container 
(liner and/or fiber drum) before final disposal is the responsibility of the person disposing of the 
container. Offer the liner for recycling if available or dispose of liner in a sanitary landfill, or by 
incineration. DO NOT burn, unless allowed by state and local ordinances. If drum is contaminated and 
cannot be reused, dispose of it in the manner required for its liner. To clean the fiber drum before final 
disposal, completely empty the fiber drum by shaking and tapping sides and bottom to loosen clinging 
particles. Empty residue into application or manufacturing equipment. Then offer the fiber drum for 
recycling if available or dispose of in a sanitary landfill, or by incineration. DO NOT burn, unless allowed 
by state and local ordinances. 
 
All Other Refillable Containers: Refillable container. Refilling Container: Refill this container with Basis 
Blend containing rimsulfuron and thifensulfuron-methyl only. DO NOT reuse this container for any other 
purpose. Cleaning before refilling is the responsibility of the refiller. Prior to refilling, inspect carefully for 
damage including cracks, punctures, abrasions, worn out threads and closure devices. If damage is 
found, DO NOT use the container, contact Corteva Agriscience at the number below for instructions. 
Check for leaks after refilling and before transporting. If leaks are found, do reuse or transport container, 
contact Corteva Agriscience at the number below for instructions. Disposing of Container: DO NOT 
reuse this container for any other purpose other than refilling (see preceding). Cleaning the container 
before final disposal is the responsibility of the person disposing of the container. To clean the container 
before final disposal, use the following pressure rinsing procedure. Insert a lance fitted with a suitable 
tank cleaning nozzle into the container and ensure that the water spray thoroughly covers the top, 
bottom and all sides inside the container. The nozzle manufacturer generally provides instructions for 
the appropriate spray pressure, spray duration and/or spray volume. If the manufacturer’s instructions 
are not available, pressure rinse the container for at least 60 seconds using a minimum pressure of 30 
PSI with a minimum rinse volume of 10% of the container volume. Drain, pour or pump rinsate into 
application equipment or rinsate collection system. Repeat this pressure rinsing procedure two more 
times. Then, for Plastic Containers, offer for recycling if available or puncture and dispose of in a 
sanitary landfill, or by incineration. DO NOT burn, unless allowed by state and local ordinances. For 
Metal Containers, offer for recycling 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.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 4 
 
DO NOT transport if this container is damaged or leaking. If the container is damaged, leaking or 
obsolete, or in the event of a major spill, fire or other emergency, contact Corteva Agriscience at 1-800-
992-5994, day or night. 
 
Refer to inside of label booklet for additional precautionary information including First Aid and 
Directions for Use. 
 
Notice: Read the entire label. Use only according to label directions. Before using this product, read 
Warranty Disclaimer, Inherent Risks of Use and Limitation of Remedies at end of label booklet. If 
terms are unacceptable, return at once unopened 
In case of emergency endangering health or the environment involving this product, call: 1-800-992-5994 
 
Agricultural Chemical: DO NOT ship or store with food, feeds, drugs, or clothing. 
 
EPA REG. NO. 352-854 EPA Est. No._____ 
 
™®Trademarks of Corteva Agriscience and its affiliated companies 
 
Produced for: 
Corteva Agriscience LLC 
9330 Zionsville Road 
Indianapolis, IN 46268 
 
 
 
NET WEIGHT_________

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 5 
 
(Cover/Shipping Label): 
RIMSULFURON GROUP 2 HERBICIDE 
THIFENSULFURON-METHYL GROUP 2 HERBICIDE 
 
Basis® Blend 
[Alternate Brand Name: DuPont Basis® Blend] 
 
HERBICIDE 
 
Water Dispersible Granules 
 
For fallow, preemergence and postemergence use in Field Corn and preplant use in Seed Corn 
and Soybeans and Inzen
TM grain sorghum 
 
Active Ingredients B y Weight 
Rimsulfuron 
N-((4,6-dimethoxypyrimidin-2-yl)aminocarbonyl)-3-(ethylsulfonyl)- 
2-pyridinesulfonamide 20.0% 
Thifensulfuron-methyl 
Methyl 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) amino]carbonyl]amino]sulfonyl]-2-
thiophenecarbox
ylate 10.0% 
Other Ingredients 70.0% 
TOTAL 100.0% 
 
Contains 0.30 lb active ingredient per lb of product (0.20 lb ai rimsulfuron and 0.10 lb ai thifensulfuron-
methyl). 
 
Keep Out of Reach of Children 
CAUTION 
 
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en detalle. (If you DO 
NOT understand this label, find someone to explain it to you in detail.) 
 
AGRICULTURAL USE REQUIREMENTS 
Use this product only in accordance with its labeling and with the Worker Protection Standard, 40 CFR 
part 170. Refer to the label booklet under "Agricultural Use Requirements" in the Directions for Use 
section for information about this standard. 
 
Refer to inside of label booklet for additional precautionary information including First Aid and 
Directions for Use. 
 
Notice: Read the entire label. Use only according to label directions. Before using this product, read 
Warranty Disclaimer, Inherent Risks of Use and Limitation of Remedies at end of label booklet. If 
terms are unacceptable, return at once unopened 
In case of emergency endangering health or the environment involving this product, call: 1-800-992-5994 
 
Agricultural Chemical: DO NOT ship or store with food, feeds, drugs, or clothing. 
 
EPA REG. NO. 352-854 EPA Est. _____ 
 
™
®Trademarks of Corteva Agriscience and its affiliated companies

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 6 
 
Produced for: 
Corteva Agriscience LLC 
9330 Zionsville Road 
Indianapolis, IN 46268 
 
NET WEIGHT_________

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 7 
 
(Page 1 through end): 
FIRST AID 
 
IF IN EYES: Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact 
lenses, if present, after the first 5 minutes, then continue rinsing eye. Call a poison control center or 
doctor for treatment advice. 
 
IF ON SKIN OR CLOTHING: Take off contaminated clothing. Rinse skin immediately with plenty of water 
for 15-20 minutes. Call a poison control center or doctor for treatment advice. 
 
IF SWALLOWED: Call a poison control center or doctor immediately for treatment advice. Have person 
sip a glass of water if able to swallow. DO NOT induce vomiting unless told to by a poison control center 
or doctor. DO NOT give anything by mouth to an unconscious person. 
 
Have the product container or label with you when calling a poison control center or doctor, or going for 
treatment. You may also contact 1-800-992-5994 for emergency medical treatment information. 
 
 
Precautionary Statements 
Hazards to Humans and Domestic Animals 
CAUTION 
 
Avoid contact with skin, eyes, or clothing. 
 
Wash hands thoroughly with soap and water after handling and before eating, drinking, chewing gum, 
using tobacco or using the toilet. 
 
PERSONAL PROTECTIVE EQUIPMENT (PPE) 
 
Applicators and other handlers must wear: 
x Long-sleeve shirt and long pants 
x Waterproof gloves 
x Shoes plus socks 
 
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, the handler PPE requirements may be reduced or modified as specified in the WPS [40 CFR 
170.607(d-f)]. 
 
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: 
x Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on 
clean clothing. 
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.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 8 
 
ENVIRONMENTAL HAZARDS 
 
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 disposing of equipment washwaters or 
rinsate. 
 
Groundwater Advisory 
This product is known to leach through soil into groundwater under certain conditions as a result of label 
use. This product 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 rainwater. This is especially true for poorly 
draining soils and soils with shallow ground water. This product is classified as having high potential for 
reaching surface water via runoff for several months or more after application. A level, well-maintained 
vegetative 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 product from runoff water and 
sediment. Runoff of this product will be greatly reduced by avoiding applications when rainfall or irrigation 
is expected to occur within 48 hours. 
 
Windblown Soil Particles Advisory 
This product has the potential to move off-site due to wind erosion. Soils that are subject to wind erosion 
usually have a high silt and/or fine to very fine sand fractions and low organic matter content. Other 
factors which can affect the movement of windblown soil include the intensity and direction of prevailing 
winds, vegetative cover, site slope, rainfall, and drainage patterns. Avoid applying this product if 
prevailing local conditions may be expected to result in off-site movement. 
 
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 area. Protect the forage and habitat of non-target 
organisms by minimizing spray drift. For further guidance and instructions on how to minimize spray drift, 
refer to the Spray Drift Management section of this label. 
 
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 requirements specific to your 
State or Tribe, consult the agency in your State responsible for pesticide regulation. 
 
Basis
® Blend must be used only in accordance with instructions on this label or as otherwise permitted by 
FIFRA. Always read the entire label, including the Limitation of Warranty and Liability. 
 
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 
product that are covered by the Worker Protection Standard. 
 
DO NOT enter or allow worker entr
y into treated areas during the restricted entry interval (REI) of 4

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 9 
 
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, including plants, soil, or water, is: 
x Coveralls 
x Waterproof gloves 
x Shoes plus socks 
 
STORAGE AND DISPOSAL 
 
DO NOT contaminate water, food, or feed by storage and disposal. 
 
PESTICIDE STORAGE: Store product in original container only. DO NOT contaminate water, other 
pesticides, fertilizer, food or feed in storage. Store in a cool, dry place. 
 
PESTICIDE DISPOSAL: DO NOT contaminate water, food, or feed by disposal. Waste resulting from 
the use of this product must be disposed of on site or at an approved waste disposal facility. 
 
CONTAINER HANDLING: Refer to the Net Contents section of this product’s labeling for the 
applicable “Nonrefillable Container” or “Refillable Container” designation. 
 
Nonrefillable Plastic and Metal Containers (Capacity Equal to or Less Than 50 Pounds): 
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. 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, for Plastic 
Containers, offer for recycling if available or puncture and dispose of in a sanitary landfill, or by 
incineration. DO NOT burn, unless allowed by state and local ordinances. For Metal Containers, offer for 
recycling 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 
 
Nonrefillable Plastic and Metal Containers (Capacity Greater Than 50 Pounds): 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.
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. Then, for Plastic Containers, offer for recycling if 
available or puncture and dispose of in a sanitary landfill, or by incineration. DO NOT burn, unless 
allowed by state and local ordinances. For Metal Containers, offer for recycling 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 
 
Nonrefillable Plastic and Metal Containers, e.g., Intermediate Bulk Containers [IBC] (Size or 
Shape Too Large to be Tipped, Rolled or Turned Upside Down): Nonrefillable container. DO NOT 
reuse or refill this container. Clean container promptly after emptying the contents from this container 
into application equipment or mix tank and before final disposal using the following pressure rinsing 
procedure. Insert a lance fitted with a suitable tank cleaning nozzle into the container and ensure that 
the water spray thoroughly covers the top, bottom and all sides inside the container. The nozzle 
manufacturer generally provides instructions for the appropriate spray pressure, spray duration and/or 
spray volume. If the manufacturer’s instructions are not available, pressure rinse the container for at 
least 60 seconds using a minimum pressure of 30 PSI with a minimum rinse volume of 10% of the 
container volume. Drain, pour or pump rinsate into application equipment or rinsate collection s
ystem.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 10 
 
Repeat this pressure rinsing procedure two more times. Then, for Plastic Containers, offer for recycling if 
available or puncture and dispose of in a sanitary landfill, or by incineration. For Metal Containers, offer 
for recycling 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. 
 
Nonrefillable Paper or Plastic Bags, Fiber Sacks including Flexible Intermediate Bulk Containers 
(FIBC) or Fiber Drums With Liners: Nonrefillable container. DO NOT reuse or refill this container. 
Completely empty paper or plastic bag, fiber sack or drum liner by shaking and tapping sides and botto
m
to loosen clinging particles. Empty residue into application or manufacturing equipment. Then offer for 
recycling if available or dispose of empty paper or plastic bag, fiber sack or fiber drum and liner in a 
sanitary landfill, or by incineration. DO NOT burn, unless allowed by state and local ordinances. 
 
Refillable Fiber Drums With Liners: Refillable container (fiber drum only). Refilling Fiber Drum: 
Refill this fiber drum with Basis Blend containing rimsulfuron and thifensulfuron-methyl only. DO NOT 
reuse this fiber drum for any other purpose. Cleaning before refilling is the responsibility of the refiller. 
Completely empty liner by shaking and tapping sides and bottom to loosen clinging particles. Empty 
residue into application or manufacturing equipment. Disposing of Fiber Drum and/or Liner: DO NOT 
reuse this fiber drum for any other purpose other than refilling (see preceding). Cleaning the container 
(liner and/or fiber drum) before final disposal is the responsibility of the person disposing of the 
container. Offer the liner for recycling if available or dispose of liner in a sanitary landfill, or by 
incineration. DO NOT burn, unless allowed by state and local ordinances. If drum is contaminated and 
cannot be reused, dispose of it in the manner required for its liner. To clean the fiber drum before final 
disposal, completely empty the fiber drum by shaking and tapping sides and bottom to loosen clinging 
particles. Empty residue into application or manufacturing equipment. Then offer the fiber drum for 
recycling if available or dispose of in a sanitary landfill, or by incineration. DO NOT burn, unless allowed 
by state and local ordinances. 
 
All Other Refillable Containers: Refillable container. Refilling Container: Refill this container with Basis 
Blend containing rimsulfuron and thifensulfuron-methyl only. DO NOT reuse this container for any other 
purpose. Cleaning before refilling is the responsibility of the refiller. Prior to refilling, inspect carefully for 
damage including cracks, punctures, abrasions, worn out threads and closure devices. If damage is 
found, DO NOT use the container, contact Corteva Agriscience at the number below for instructions. 
Check for leaks after refilling and before transporting. If leaks are found, do reuse or transport container, 
contact Corteva Agriscience at the number below for instructions. Disposing of Container: DO NOT 
reuse this container for any other purpose other than refilling (see preceding). Cleaning the container 
before final disposal is the responsibility of the person disposing of the container. To clean the container 
before final disposal, use the following pressure rinsing procedure. Insert a lance fitted with a suitable 
tank cleaning nozzle into the container and ensure that the water spray thoroughly covers the top, 
bottom and all sides inside the container. The nozzle manufacturer generally provides instructions for 
the appropriate spray pressure, spray duration and/or spray volume. If the manufacturer’s instructions 
are not available, pressure rinse the container for at least 60 seconds using a minimum pressure of 30 
PSI with a minimum rinse volume of 10% of the container volume. Drain, pour or pump rinsate into 
application equipment or rinsate collection system. Repeat this pressure rinsing procedure two more 
times. Then, for Plastic Containers, offer for recycling if available or puncture and dispose of in a 
sanitary landfill, or by incineration. DO NOT burn, unless allowed by state and local ordinances. For 
Metal Containers, offer for recycling 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. 
 
DO NOT transport if this container is damaged or leaking. If the container is damaged, leaking or 
obsolete, or in the event of a major spill, fire or other emergency, contact Corteva Agriscience at 1-800-
992-5994, da
y or night.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 11 
 
PRODUCT INFORMATION 
 
Basis Blend must be used only in accordance with instructions on this label . To the extent consistent with 
applicable law, Corteva Agriscience will not be responsible for losses or damage resulting from use of this 
product in any manner not specified by Corteva Agriscience. 
 
Basis Blend is a water soluble granule which is a selective herbicide for burndown and residual control of 
certain annual grass and broadleaf weeds. 
 
Basis Blend can be tank mixed with a variety of herbicides to improve burndown and residual control. 
However, the most restrictive label must be followed. 
 
Basis Blend is absorbed through the roots and leaf tissue of plants, rapidly inhibiting the growth of 
susceptible weeds. Rainfall or sprinkler irrigation is needed to move Basis Blend into the soil. Susceptible 
weeds will generally not emerge from a preemergence application. In some cases, susceptible weeds 
may germinate and emerge a few days after application, but growth then ceases and leaves become 
chlorotic three to five days after emergence. Death of leaf tissue and growing point will follow in some 
species, while others will remain green, stunted and noncompetitive. 
 
The herbicidal action of Basis Blend may be less effective on weeds stressed from adverse 
environmental conditions (including extreme temperatures or moisture), abnormal soil conditions or 
cultural practices. 
 
Basis Blend residual is most effective in controlling weeds when adequate rainfall is received within 5-7 
days after application. If cultivation is necessary because of soil crusting, soil compaction or weed 
germination before rain occurs, use shallow tillage including rotary hoe to lightly incorporate Basis Blend 
and make certain crop seeds are below the tilled area. 
 
Consult with your local seed company representative for any additional information relative to potential 
crop sensitivity to Basis Blend. 
 
USE RESTRICTIONS 
 
CROPS Maximum 
Oz of Product/ 
Acre/ Single 
Application 
Maximum 
Lb AI/ 
Acre/Single 
Application 
Maximum 
Number of 
Application
s 
Per Year 
Maximum 
Oz of 
Product 
/Acre/Year 
Maximum 
Lb AI/A 
per 
Year 
Restrictions 
Field 
corn 
Preplant/preem
ergence: 2.5 oz 
 
Postemergence: 
0.825 oz 
Preplant/preemer
gence: 0.031 lb 
ai rimsulfuron + 
0.016 lb ai 
thifensulfuron 
methyl 
 
Postemergence: 
0.010 lb ai 
rimsulfuron + 
0.005 lb ai 
thifensulfuron 
methyl 
2 2.5 oz 0.031 lb ai 
rimsulfuron + 
0.016 lb ai 
thifensulfuron 
methyl 
DO NOT apply 
to popcorn or 
sweet corn. 
DO NOT apply 
to corn having 3 
fully emerged 
collars or over 
6” tall. 
Seed 
corn 
Preplant: 
0.825 oz 
0.010 lb ai 
rimsulfuron + 
0.005 lb ai 
thifensulfuron 
methyl 
1 0.825 oz 0.010 lb ai 
rimsulfuron + 
0.005 lb ai 
thifensulfuron 
methyl 
DO NOT apply 
preemergence 
or 
postemergence

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 12 
 
CROPS Maximum 
Oz of Product/ 
Acre/ Single 
Application 
Maximum 
Lb AI/ 
Acre/Single 
Application 
Maximum 
Number of 
Application
s 
Per Year 
Maximum 
Oz of 
Product 
/Acre/Year 
Maximum 
Lb AI/A 
per 
Year 
Restrictions 
Soybean
s 
Preplant: 1.25 
oz 
0.016 lb ai 
rimsulfuron + 
0.008 lb ai 
thifensulfuron 
methyl 
1 1.25 oz 0.016 lb ai 
rimsulfuron + 
0.008 lb ai 
thifensulfuron 
methyl 
DO NOT apply 
preemergence 
or 
postemergence. 
Refer to 
“Application 
Information” 
section for 
specific 
guidelines. 
STS® 
(sulfonylu
rea 
tolerant 
soybean) 
varieties 
and 
soybeans 
with 
BOLT® 
Technolo
gy 
Preplant: 2.5 oz 0.031 lb ai 
rimsulfuron + 
0.016 lb ai 
thifensulfuron 
methyl 
1 2.5 oz 0.031 lb ai 
rimsulfuron + 
0.016 lb ai 
thifensulfuron 
methyl 
DO NOT apply 
preemergence 
or 
postemergence. 
Refer to the 
“Application 
Information” 
section for 
specific 
guidelines 
InzenTM 
grain 
sorghum 
Preplant 0.825-
2.5oz 
0.010 lb ai 
rimsulfuron + 
0.005 lb ai 
thifensulfuron 
methyl to 0.031 
lb ai rimsulfuron 
+ 0.016 ai 
thifensulfuron 
methyl 
1 2.5 oz 0.031 lb ai 
rimsulfuron + 
0.016 lb ai 
thifensulfuron 
methyl 
DO NOT use 
Basis Blend on 
grain sorghum 
that does not 
contain the 
INZEN™ trait. 
Apply 14 days 
prior to planting 
INZEN grain 
sorghum. 
 
DO NOT apply to popcorn or sweet corn. 
 
DO NOT apply preemergence or postemergence to seed corn or soybeans. 
 
DO NOT apply more than 0.0625 lb active ingredient rimsulfuron and 0.0469 lb active ingredient 
thifensulfuron-methyl per acre per year from all sources. This includes combinations of fallow, preplant 
preemergence and postemergence applications of Basis Blend, as well as rimsulfuron from applications 
of all herbicides. 
 
DO NOT apply more than 0.825 ounces (0.010 lb ai rimsulfuron and 0.005 lb ai thifensulfuron-methyl)) of 
Basis Blend postemergence, per acre per application to field corn, unless instructed to do so by Corteva 
Agriscience technical bulletins, fact sheets, or supplemental labeling. 
 
DO NOT apply to coarse-textured soils (sand, loamy sand or sandy loam) with less than 1% organic 
matter. 
 
DO NOT tank mix Basis Blend with bentazon products or severe crop injury may occur. 
 
DO NOT tank mix Basis Blend with foliar-applied organophosphate insecticides including chlorpyrifos, 
malathion, etc., as severe crop injury may occur. To avoid crop injury or antagonism, apply these

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 13 
 
products at least seven days before or 3 days after the application of Basis Blend. 
 
DO NOT apply the organophosphate insecticide terbufos within 45 days of a preplant or preemergence 
application of Basis Blend since crop injury may result. 
 
DO NOT apply Basis Blend within 45 days of crop emergence where the organophosphate insecticide 
terbufos was applied since crop injury may occur. Applications made to corn previously treated with 
chlorpyrifos or other similar organophosphate insecticides may result in unacceptable crop injury. Any 
crop injury or yield loss resulting from these applications are the responsibility of the grower. 
 
DO NOT apply Basis Blend or drain or flush application equipment on or near desirable trees or other 
plants, or on areas where their roots may extend, or in locations where the chemical may be washed or 
moved into contract with their roots. 
 
DO NOT use on lawns, walks, driveways, tennis courts. 
 
DO NOT contaminate any body of water. 
 
DO NOT graze, feed forage, grain or fodder (stover) from treated areas to livestock within 30 days of 
Basis Blend application. 
 
DO NOT irrigate Basis Blend into coarse soils at planting time when soils are saturated. 
 
DO NOT apply this product through any type of irrigation system unless instructed to do so by technical 
bulletins, fact sheets, or supplemental labeling. 
 
DO NOT use flood or furrow irrigation to apply Basis Blend. 
 
PRECAUTIONS 
 
Allow at least 4 weeks between preemergence application of Basis Blend and postemergence 
applications of unsafened rimsulfuron-containing herbicides. 
 
Basis Blend may interact with certain insecticides previously applied to the crop. Crop response varies 
with field crop, insecticide used, insecticide application methods, and soil type. 
 
Basis Blend may be applied to corn previously treated with chlorethoxyfos, chlorethoxyfos + bifenthrin, 
tebupirimphos + cyfluthrin, or tefluthrin insecticides, or non-organophosphate soil insecticides regardless 
of soil type. 
 
Preplant/Preemergence applications of Basis Blend to field crops where an application of chlorpyrifos or 
phorate is planned may cause unacceptable crop injury, especially on soils of less than 4% organic 
matter. 
 
Crop injury may occur following an application of Basis Blend if there is a prolonged period of cold 
weather and/or in conjunction with wet soils. 
 
Prevent drift or spray to desirable plants. 
 
Thoroughly clean application equipment immediately after use. It is advised to flush the sprayer system 
and recharge with clean water when there are extended periods between Basis Blend applications. See 
Sprayer Cleanup section of this label for instructions. 
 
WEED RESISTANCE MANAGEMENT 
 
Basis Blend, which contains the active ingredients rimsulfuron and thifensulfuron-methyl, is a Group 2

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 14 
 
herbicide based on the mode of action classification system of the Weed Science Society of America. 
 
Proactively implementing diversified weed control strategies to minimize selection for weed populations 
resistant to one or more herbicides is a best practice. A diversified weed management program may 
include the use of multiple herbicides with different sites of action and overlapping weed spectrum with or 
without tillage operations and/or other cultural practices. Research has demonstrated that using the 
labeled rate and directions for use is important to delay the selection for resistance. 
 
The continued effectiveness of this product depends on the successful implementation of a weed 
resistance management program. 
 
To aid in the prevention of developing weeds resistant to this product, users should: 
x Scout fields before application to ensure herbicides and rates will be appropriate for the weed species 
and weed sizes present. 
x Start with a clean field, using either a burndown herbicide application or tillage. 
x Control weeds early when they are relatively small (less than 4 inches). 
x Apply full rates of Basis Blend herbicide for the most difficult to control weed in the field at the 
specified time (correct weed size) to minimize weed escapes. 
x Scout fields after application to detect weed escapes or shifts in control of weed species. 
x Control weed escapes before they reproduce by seed or proliferate vegetatively. 
x Report any incidence of non-performance of this product against a particular weed to your company 
representative, local retailer, or county extension agent. 
x Contact your company representative, crop advisor, or extension agent to find out if suspected 
resistant weeds to this MOA have been found in your region. If resistant biotypes of target weeds 
have been reported, use the application rates of this product specified for your local conditions. Tank 
mix products so that there are multiple effective sites of actions for each target weed. 
x If resistance is suspected, treat weed escapes with an herbicide having a site of action other than 
Group 2 and/or use nonchemical methods to remove escapes, as practical, with the goal of 
preventing further seed production. 
x Suspected herbicide-resistant weeds may be identified by these indicators: 
x Failure to control a weed species normally controlled by the herbicide at the dose applied, especially 
if control is achieved on adjacent weeds; 
x A spreading patch of non-controlled plants of a particular weed species; and 
x Surviving plants mixed with controlled individuals of the same species. 
 
Additionally, users should follow as many of the following herbicide resistance management practices as 
is practical: 
x Use a broad spectrum soil-applied herbicide with other sites of action as a foundation in a weed 
control program. 
x Utilize sequential applications of herbicides with alternative sites of action. 
x Rotate the use of this product with non-Group 2 herbicides. 
x Avoid making more than two applications of Basis Blend and any other Group 2 herbicides within a 
single growing season unless mixed with an herbicide with a different site of action with an 
overlapping spectrum for the difficult-to-control weeds. 
x Incorporate non-chemical weed control practices, including mechanical cultivation, crop rotation, 
cover crops and weed-free crop seeds, as part of an integrated weed control program. 
x Use good agronomic principles that enhance crop development and crop competitiveness. 
x Thoroughly clean plant residues from equipment before leaving fields suspected to contain resistant 
weeds. 
x Manage weeds in and around fields, during and after harvest to reduce weed seed production. 
 
INTEGRATED PEST MANAGEMENT 
 
This product may be used as part of an Integrated Pest Management (IPM) program that can include

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 15 
 
biological, cultural, and genetic practices aimed at preventing economic pest damage. IPM principles and 
practices include field scouting or other detection methods, correct target pest identification, population 
monitoring, and treating when target pest populations reach locally determined action thresholds. Consult 
your state cooperative extension service, professional consultants or other qualified authorities to 
determine appropriate action treatment threshold levels for treating specific pest/crop systems in your 
area. 
 
MANDATORY SPRAY DRIFT MANAGEMENT 
 
Ground Boom Applications: 
x Apply with the nozzle height recommended by the manufacturer, but no more than 3 feet above the 
ground or crop canopy 
x For applications prior to the emergence of crops and target weeds, applicators are required to use a 
Coarse or coarser droplet size (ASABE S572). 
x For all other applications, applicators are required to use a Medium or coarser droplet size (ASABE 
S572). 
x DO NOT apply when wind speeds exceed 10 miles per hour at the application site. 
x DO NOT apply during temperature inversions. 
 
Aerial Applications: 
x DO NOT release spray at a height greater than 10 feet above the vegetative canopy, unless a 
greater application height is necessary for pilot safety. 
x For applications prior to the emergence of crops and target weeds, applicators are required to use a 
Coarse or coarser droplet size (ASABE S572). 
x For all other applications, applicators are required to use a Medium or coarser droplet size (ASABE 
S572). 
x The boom length must not exceed 65% of the wingspan for airplanes or 75% of the rotor blade 
diameter for helicopters. 
x Applicators must use one-half swath displacement upwind at the downwind edge of the field. 
x Nozzles must be oriented so the spray is directed toward the back of the aircraft. 
x DO NOT apply when wind speeds exceed 10 miles per hour at the application site. 
x DO NOT apply during temperature inversions. 
 
Boom-less Ground Applications: 
x Applicators are required to use a Medium or coarser droplet size (ASABE S572) for all applications. 
x DO NOT apply when wind speeds exceed 10 miles per hour at the application site. 
 
 
SPRAY DRIFT MANAGEMENT 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.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 16 
 
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 
Use the lowest boom height that is compatible with the spray nozzles that will provide uniform coverage. 
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. When applying aerially to crops, DO NOT 
release spray at a height greater than 10 ft above the crop canopy, unless a greater application height is 
necessary for pilot safety. 
 
Boom-less Ground Applications: 
x Setting nozzles at the lowest effective height will help to reduce the potential for spray drift. 
 
Handheld Technology Applications: 
x 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. 
 
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. Avoid applications during temperature inversions. 
 
WIND 
Drift potential generally increases with wind speed. AVOID APPLICATIONS DURING GUSTY WIND 
CONDITIONS. 
x Applicators need to be familiar with local wind patterns and terrain that could affect spray drift. 
 
Drift Control Additives 
Using product compatible drift control additives can reduce drift potential. When a drift control additive is 
used, read and carefully observe cautionary statements and all other information on the additive’s label. If 
using an additive that increases viscosity, ensure that the nozzles and other application equipment will 
function properly with a viscous spray solution. Preferred drift control additives have been certified by the 
Council of Producers & Distributors of Agrotechnology (CPDA).

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 17 
 
APPLICATION INFORMATION 
 
Application Rate Summary Table for Basis Blend: 
Rate of Basis Blend Pounds of Active Ingredient 
Rimsulfuron 
Pounds of Active Ingredient 
Thifensulfuron-methyl 
0.825 oz 0.010 0.005 
1.25 oz 0.016 0.008 
1.5 oz 0.019 0.009 
2.5 oz 0.031 0.016 
 
Fallow 
 
Rate 
 
Apply Basis Blend at 0.825 - 2.5 ounces per acre. 
 
Timing to Crop & Weeds 
 
Basis Blend may be used as a fallow treatment, in the fall or spring when the majority of weeds have 
emerged and are actively growing. 
 
Tank Mixtures 
 
Basis Blend may be used as a fallow treatment and may be tank mixed with other herbicides that are 
registered for use in fallow including glyphosate, paraquat, glufosinate, saflufenacil, 2,4-D LVE, and 
dicamba herbicides for improved control of emerged weed species. 
It is the pesticide user’s 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. 
 
For best control of emerged weeds, apply Basis Blend to grasses less than 3” tall, broadleaf weeds less 
than 4" tall and winter annuals/biennials less than 6" tall. Make application prior to flowering. 
 
Field Corn - Preplant/Preemergence 
 
Rate 
 
Apply Basis Blend at 0.825 – 2.5 ounce per acre before corn emergence. See cumulative rimsulfuron rate 
limitation noted in Product Information. Basis Blend at 1.25 – 1.5 ounce per acre fits most 
preemergence/preplant applications. 
 
Timing to Crop 
 
Basis Blend may be applied preplant after fall harvest of the preceding crop through early spring, up to 
planting, whenever the ground is not frozen, to control emerged weeds and to provide limited residual 
control of early-emerging spring weeds. 
 
Control of emerged weeds will require the addition of spray adjuvants, and can be further enhanced with 
additional tank mix partners as noted in this label. 
 
Sequential Application 
 
Basis Blend may be used in a sequential herbicide program in corn. Apply Basis Blend for burndown and 
residual weed control, followed by a postemergence, in-crop application of herbicides.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 18 
 
Make sequential applications after the corn has reached the 2 collar stage but before the corn exceeds 
the maximum application height listed on the respective product label. 
 
Refer to the appropriate product label for use restrictions, application information, rotational crop 
guidelines, and cautionary statements prior to application. 
 
Additional Control of Grasses and Broadleaves 
 
Basis Blend may be tank mixed with full or reduced rates of labeled preplant/preemergence grass and 
broadleaf herbicides including atrazine, to provide added residual activity or burndown activity on 
emerged weeds. Sequential applications of may also be made following preplant applications of Basis 
Blend. Consult tank mix partner labeling for rate and soil-type restrictions. 
 
Field Corn – Postemergence 
 
Rate 
 
Apply Basis Blend at 0.825 ounces per acre as a postemergence broadcast application. 
 
Timing to Crop 
 
Basis Blend may be applied to field corn in the spike through 4-leaf (2 collar) stage (approximately 1/2" to 
6" tall). DO NOT apply to corn having 3 fully emerged collars or over 6" tall. 
 
Timing to Emerged Weeds 
 
Apply Basis Blend when grasses are young and actively growing, but before they exceed the sizes listed 
on this label. 
 
On glyphosate resistant corn, glyphosate may be applied with Basis Blend after weeds emerge but before 
they reach the maximum size listed on the glyphosate herbicide label. 
 
On glufosinate resistant corn, glufosinate may be applied with Basis Blend after weeds emerge but before 
they reach the maximum size listed on the glufosinate herbicide label. 
 
Applications made to weed sizes greater than those listed on these product labels may result in 
incomplete control. Grass competition due to incomplete control may reduce yields. 
 
Seed Corn - Early Preplant in the Fall 
 
Rate 
 
Apply Basis Blend at 0.825 oz/A. 
 
Timing to Crop 
 
Basis Blend may be applied after fall harvest of the preceding crop until ground freezes or December 15. 
 
Control of Grasses and Broadleaves 
 
Basis Blend may be used in a sequential herbicide program in seed corn. Apply Basis Blend for 
burndown and residual weed control. 
 
Refer to the appropriate product label for use restrictions, application information, rotational crop 
guidelines, and cautionary statements prior to application.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 19 
 
Soybeans - Preplant 
 
Rate 
 
Apply Basis Blend at 0.825 ounces per acre 15 days or more prior to planting. 
 
Apply Basis Blend at 1.25 ounces per acre 30 days or more prior to planting in the states of AL, AR, GA, 
KY, LA, MO (bootheel), MS, NC, SC, and TN. 
 
Apply Basis Blend at 1.25 ounces per acre 60 days or more prior to planting in the states of KS and OK 
the counties containing HWY 81 and east and in MO (excluding the bootheel), IL, IN, OH, and WV the 
counties that contain I-70 and south and the states of DE, MD and VA. 
 
STS® (sulfonylurea tolerant soybean) varieties and soybeans with BOLT® 
Technology – Preplant 
 
Rate 
 
Apply Basis Blend at 0.825 ounces per acre 15 days or more prior to planting STS
® soybean varieties. 
 
Apply Basis Blend at greater than 0.825 up to 1.25 ounces per acre 1 month or more prior to planting 
STS
® soybean varieties. 
 
Apply Basis Blend at greater than 1.25 up to 2.5 ounces per acre 4 months or more prior to planting STS® 
soybean varieties. 
 
Apply Basis Blend at 0.825 - 2.5 ounces per acre 0 days or more prior to planting soybeans with BOLT™ 
technology. 
 
Refer to Rotational Crop Guidelines for additional rotational interval information. 
 
Timing to Crop 
 
Basis Blend may be applied preplant after fall harvest through early spring, whenever the ground is not 
frozen, to control emerged weeds and to provide limited residual control of early-emerging spring weeds. 
 
Control of emerged weeds will require the addition of spray adjuvants, and can be further enhanced with 
additional tank mix partners as noted in this label. 
 
Sequential Application – Soybeans (including sulfonylurea tolerant and other varieties with BOLT
® 
Technology) 
 
Basis Blend may be used in a sequential herbicide program in soybeans. Refer to the product labels for 
use restrictions, application information, rotational crop guidelines, and cautionary statements prior to 
application. 
 
Basis Blend may be tank mixed with preplant herbicides registered for soybeans. Refer to the product 
labels for use restrictions, application information, rotational crop guidelines, and cautionary statements 
prior to application. 
 
Additional Information: 
 
Soybeans may be planted per the label guidelines following a Basis Blend application provided any one 
of the following conditions is met:

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 20 
 
x Soil temperature post application is > 50° for more than 10 days prior to planting. 
 
x Field cultivation or discing is utilized to prepare the seedbed (not vertical tillage). 
 
x The soybean variety has been designated to have a high degree of crop tolerance to ALS inhibiting 
and/or sulfonylurea herbicides. Consult seed provider for confirmation. 
If none of these conditions are met, extend soybean recrop interval to 10 months. 
 
Crop injury may occur from applications made to poorly drained soils under cool, and excessively wet 
conditions. Risk of crop injury can be minimized by not using on poorly drained soils, and planting at least 
1.5 inches deep. 
 
The use of soil-active ALS herbicides contained in products including products containing thiencarbazone 
methyl in the previous crop or prior to planting soybeans in the current cropping year may impact soybean 
tolerance to Basis Blend. 
 
Inzen grain sorghum - Preplant Rate 
 
Apply Basis Blend at 0.825 – 2.5 ounce per acre 14 days prior to planting grain sorghum that contains the 
Inzen trait. See cumulative rimsulfuron and thifensulfuron rate limitations noted in Product Information. 
Basis Blend at 1.25 – 1.5 ounce per acre fits most preplant applications. DO NOT use Basis Blend on 
grain sorghum that does not contain the INZEN™ trait as severe injury or death will occur. 
 
Timing to Crop 
Basis Blend may be applied preplant after fall harvest of the preceding crop through early spring, up to 14 
days prior to planting, whenever the ground is not frozen, to control emerged weeds and to provide 
limited residual control of early-emerging spring weeds. Control of emerged weeds will require the 
addition of spray adjuvants, and can be further enhanced with additional tank mix partners as noted in 
this label. 
 
Sequential Application 
Basis Blend may be used in a sequential herbicide program in Inzen grain sorghum. Apply Basis Blend 
for burndown and residual weed control, followed by a post, in-crop application of Zest WDG for control of 
many annual grass weeds. Refer to the Zest WDG product label for use restrictions, application 
information, rotational crop guidelines, and cautionary statements prior to application. 
 
Additional Control of Grasses and Broadleaves 
Basis Blend may be tank mixed with labeled preplant grass and broadleaf herbicides to provide added 
residual activity or burndown activity on emerged weeds. Sequential applications may also be made 
following preplant applications of Basis Blend. Consult tank mix partner labeling for rate and soil-type 
restrictions. 
 
Spray Adjuvants 
 
For control of emerged weeds, application of Basis Blend must include a crop oil concentrate, modified 
seed oil or a nonionic surfactant. In addition, an ammonium nitrogen fertilizer must be used unless 
specifically prohibited by the tank mix partner labeling. Crop oil concentrate/modified seed oil plus 
ammonium nitrogen fertilizer is the preferred adjuvant system for Basis Blend for control of emerged 
weeds. When applied in tank mix combination with a glyphosate or glufosinate herbicide that contains a 
built-in adjuvant system, ensure the total adjuvant load is equivalent to the directions on this label. Select 
adjuvants authorized for use with both products. 
 
Consult local Corteva Agriscience fact sheets, technical bulletins, and service policies prior to using other 
adjuvant systems. Products must contain only EPA-exempt ingredients.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 21 
 
DO NOT use with spray additives that alter the pH of the spray solution below 5.0 or above 9.0 as rapid 
product degradation can occur. Spray solutions of pH 6.0 – 8.0 allow for optimum stability of Basis Blend. 
 
Petroleum Crop Oil Concentrate (COC) or Modified Seed Oil (MSO) 
 
x Apply at 1% v/v (1 gallon per 100 gallons spray solution) or 2% under arid conditions. 
 
x MSO adjuvants may be used at 0.5% v/v (0.5 gallon per 100 gallons spray solution) if specifically 
noted on adjuvant product labeling. 
 
x Oil adjuvants must contain at least 80% high quality, petroleum (mineral) or modified vegetable seed 
oil with at least 15% surfactant emulsifiers. 
 
Nonionic Surfactant (NIS) 
 
x Apply at 0.25% v/v (1 qt per 100 gal spray solution). 
 
x Surfactant products must contain at least 60% nonionic surfactant with a hydrophilic/lipophilic balance 
(HLB) greater than 12. 
 
Ammonium Nitrogen Fertilizer 
 
x Use 2 qt/acre of a high-quality urea ammonium nitrate (UAN) including 28%N or 32%N, or 2 lb/acre of 
a spray-grade ammonium sulfate (AMS). 
 
x DO NOT use liquid nitrogen fertilizer as the total carrier solution after crop emergence. 
 
Special Adjuvant Types 
 
x Combination adjuvant products may be used at doses that provide the required amount of NIS and 
ammonium nitrogen fertilizer. Consult product literature for use rates and restrictions. 
 
Weeds Controlled/Suppressed 
 
Basis Blend may be tank mixed with glyphosate, paraquat, glufosinate, saflufenacil, 2,4-D LVE, and 
dicamba herbicides for improved control of emerged weed species. For application methods and other 
use specifications use the most restrictive label directions for the intended combination. 
 
Refer to the Spray Adjuvants section for additional information on proper adjuvant selection. 
 
Weeds & Grasses 
Burndown 
Basis Blend Alone 
Burndown when tank mixed with 
glyphosate plus 2,4D or dicamba Residual- Basis Blend 
Alfalfa, volunteer C C NC 
Barley, volunteer C C S 
Barnyardgrass C C C 
Bittercress C C C 
Bluegrass, annual C C C 
Brome, downy S C S 
Buckwheat, common C C NC 
Buttercup, smallflower C C NC 
Carpetweed NC C S 
Canada thistle S C NC 
Catchweed bedstraw C C C 
Chamomile, false NC C C 
Chickweed (common, mouseear) C C NC 
Cocklebur S C S 
Crabgrass C 1 C S 
Cupgrass, woolly (1”) C C NC

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 22 
 
Curly Dock C C NC 
Dandelion (6” diameter) C C NC 
Deadnettle, purple C C C 
Evening primrose, cutleaf C 2 C NC 
Fescue, tall S C S 
Field pennycress C C NC 
Filaree, redstem NC C C 
Foxtail (bristly, giant, green, yellow) C C C 
Foxtail, Carolina C C C 
Geranium, Carolina C C NC 
Groundsel, common C C NC 
Hemlock, poison (up to 12”) C C S 
Henbit C C C 
Knotweed, prostrate C C NC 
Jimsonweed NC C S 
Johnsongrass, seedling S C NC 
Kochia C 3 C C3 
Lambsquarters, common C C C 
Marestail (Horseweed) S C C3 
Millet, wild proso S C NC 
Morningglory, ivyleaf S C S 
Mustard (birdsrape, black) C C C 
Mustard, wild C C NC 
Nightshade, hairy S C S 
Nightshade, black NC C S 
Palmer amaranth NC C 4
 S4
 
Panicum, fall C C S 
Parsnip, wild C C S 
Pigweed (prostrate, redroot, smooth) C 4 C C 
Purslane, common S C C 
Quackgrass S C NC 
Ragweed, common S C S 
Russian thistle, seedling NC C S 
Ryegrass, Italian† S 4 C S 4 
Sandbur (field, longspine) NC C NC 
Shattercane (4”) C C NC 
Shepherd’s purse C C NC 
Signalgrass, broadleaf S C C 
Smartweed, Pennsylvania C C S 
Smartweed, Ladysthumb C C NC 
Stinkgrass S C NC 
Sunflower C C S 
Velvetleaf C C S 
Wallflower, bushy C C NC 
Wheat, volunteer C C C 
Wild buckwheat NC C NC 
Wild oat S C S 
Wild radish C C NC 
Yellow nutsedge S C NC 
Yellow rocket C C C 
 
C= Control 
S= Suppression 
NC = No Control 
1 = <1/2” 
2 = Must add 2,4D LVE or dicamba for control 
3 = ALS Sensitive 
4 = Resistant biotypes are known to occur 
 
Tank Mix Compatibility Testing 
 
Perform a jar test prior to tank mixing to ensure compatibility of Basis Blend and other pesticides. Use a 
clear quart jar with lid and mix the tank mix ingredients in their relative proportions. Invert the jar 
containing the mixture several times and observe the mixture for approximately 1/2 hour. If the mixture

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 23 
 
balls-ups, forms flakes, sludge, gel, oily film or layers, or other precipitates, it is not compatible; DO NOT 
use the tank mix combination. 
 
Mixing Instructions 
 
Fertilizer Carrier Instructions 
 
Mix Basis Blend with water or pre-dissolve in water and add to liquid fertilizer for preemergence 
application. When using liquid fertilizer as the carrier, always pre-slurry Basis Blend in water before 
adding fertilizer solutions. Add the Basis Blend slurry to the final complete liquid fertilizer mixture – DO 
NOT add Basis Blend during the fertilizer mixing process. Always use good agitation while adding the 
Basis Blend slurry to liquid fertilizers and maintain good agitation until sprayed. When using liquid fertilizer 
as the carrier, conduct a compatibility test with all components prior to mixing. 
 
DO NOT use with spray additives or liquid fertilizer carriers that alter the pH of the spray solution below 
pH 5.0 or above pH 9.0 as rapid product degradation can occur. Spray solutions of pH 6.0 -8.0 allow for 
optimum stability of Basis Blend. 
 
Water Carrier Instructions 
 
1. Fill the tank 1/3 to 1/2 full of clean water. 
2. While agitating, add the required amount of Basis Blend. 
3. Continue agitation until the Basis Blend is fully dispersed, at least 5 minutes. When the water 
temperature is 40°F or less, it is important to allow agitation and mixing to occur for the full 5 minutes 
to ensure the product is completely dissolved. 
4. Once the Basis Blend is fully dispersed, maintain agitation and continue filling tank with water. 
Thoroughly mix and dissolve Basis Blend with water before adding any other material including water 
conditioners or other additives. 
5. As the tank is filling, add tank mix partners in the proper mixing order. 
6. If the mixture is not continuously agitated, settling will occur. If settling occurs, thoroughly re-agitate 
before using. 
7. At the end of the day, or for extended periods of time between Basis Blend applications, it is advised 
to flush boom hoses and lines of spray solution and recharge with clean water. This will aid in proper 
sprayer cleanout when concluding Basis Blend applications before moving on to spray other 
products/crops. 
8. Apply Basis Blend spray mixture within 48 hours of mixing to avoid product degradation. 
 
If the selected companion herbicide has a ground or surface water advisory, consider this advisory when 
using the companion herbicide. 
 
Application and Spray Volumes 
 
Ground 
 
Use a minimum of 15 gallons of water per acre (GPA) to ensure thorough coverage of the weeds and the 
best performance. Use a minimum of 10 GPA for light, scattered stands of weeds. 
 
Heavy crop residues may reduce burndown control of emerged weeds if residues impede spray 
coverage. Higher spray volumes and pressures can improve burndown control in heavy crop residue 
situations. 
 
For optimal product performance and minimal spray drift, adjust the spray boom to the lowest possible 
spray height in manufacturers’ specifications. Overlaps or starting, stopping, slowing, and turning while 
spraying may result in crop injury.

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 24 
 
Refer to the SPRAY DRIFT MANAGEMENT section 
 
Aerial 
 
Use nozzle types and arrangements that will provide optimum spray distribution and maximum coverage 
at a minimum of 5 GPA. 
 
Aerial application is not permitted in the State of New York. 
 
Refer to the SPRAY DRIFT MANAGEMENT section 
 
ROTATIONAL CROP INTERVALS 
The following rotational intervals must be observed when using Basis Blend: 
 
1.25 OZ MAXIMUM USE RATE PER ACRE PER YEAR Rotation Crop 
 
Rotation Crop Interval (months) 
Corn, field Anytime 
Soybeans with Bolt® Technology Anytime 
Potatoes 1 
Sulfonylurea Tolerant soybeans (STS)® 1 
Cotton†† 1 
Tomato 1 
Cereals, Winter 3 
Cereals, Spring 9 
Alfalfa*† 10 
Canola† 10 
Corn, pop seed** or sweet 10 
Cucumber 10 
Flax 10 
Peas 10 
Peanuts 1.5 
Rice 10 
Red Clover† 10 
Sorghum† 10 
Sorghum (Inzen grain) 0.5 
Soybeans††† 10 
Snap beans, dry beans 10 
Sunflower 10 
Sugarbeets† 10 
Sweet potatoes/yams*** 10 
Tobacco 1.5 
Crops Not Listed 18 
 
* On sprinkler irrigated fields in Idaho, Utah, and Northern Nevada it is best to use deep fall tillage including plowing prior to planting 
alfalfa. Product degradation may be less on furrow irrigated soils and may result in some crop injury. 
 
**Rotational interval to seed corn is 60 days if applying 0.825 oz per acre in the fall by December 15. 
 
***On soils with pH 6.5 or less 
† 18 months in the Red River Valley region of ND and MN. In all other areas, the rotation interval must be extended to 18 months if 
drought conditions prevail after application and before the rotational crop is planted, unless sprinkler irrigation has been ap plied and 
totals greater than 15" during the growing season. 
 
††Except in Oklahoma and Texas west of Route 183, where the rotational interval is 10 months. 
 
†††In the states of AL, AR, GA, KY, LA, MO (bootheel), MS, NC, SC, and TN the recrop interval is 30 days. In the states of KS and

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 25 
 
OK the counties containing HWY 81 and east and in MO (excluding the bootheel), IL, IN, OH, and WV the counties that contain I-7 0 
and south and the states of DE, MD and VA, the recrop is 60 days. 
 
GREATER THAN 1.25 OZ UP TO 2.5 OZ MAXIMUM USE RATE PER ACRE PER YEAR 
 
Rotation Crop Interval (months) 
Corn, field Anytime 
Soybeans with Bolt Technology Anytime 
Potatoes 1 
Tomato 1 
Sulfonylurea Tolerant soybeans (STS)® 4 
Cereals, Winter 3 
Cereals, Spring 9 
Corn pop, seed or sweet 10 
Cotton† 10 
Cucumber 10 
Flax 10 
Sorghum (Inzen grain) 0.5 
Soybeans 10 
Snap beans, dry beans 10 
Sunflower 10 
Crops Not Listed 18 
 
†The rotation interval must be extended to 18 months if drought conditions prevail after application and before the rotational crop is 
planted, unless sprinkler irrigation has been applied and totals greater than 15" during the growing season. 
 
SPRAYER PREPARATION/CLEANUP 
 
It is important that spray equipment is clean and free of previous pesticide deposits before using Basis 
Blend and then properly cleaned out following application. Clean all application equipment before applying 
Basis Blend. Follow the cleanup procedures specified on the label of the product previously sprayed. If no 
cleanup procedure is provided, use the procedure that follows. Immediately following applications of Basis 
Blend, thoroughly clean all mixing and spray equipment to avoid subsequent crop injury. 
 
x When cleaning spray equipment before applying Basis Blend, read and follow label directions for 
proper rinsate disposal of the product previously sprayed. 
 
x When spraying or mixing equipment will be used over an extended period to apply multiple loads of 
Basis Blend, partially fill the tank with fresh water at the end of each day of spraying, flush the boom 
and hoses, and allow to sit overnight. This will prevent the buildup of dried pesticide deposits, which 
can accumulate in the application equipment. 
 
To avoid subsequent injury to desirable crops, thoroughly clean all mixing and spray equipment 
immediately following applications of Basis Blend as follows: 
 
1. Empty the tank and drain the sump completely. 
2. Spray the tank walls with clean water using a minimum volume of 10% of the tank volume. Circulate 
the water through the lines, including all by-pass lines, for at least two minutes. Flush the boom well 
and empty the sprayer. Completely drain the sump. 
3. Repeat step 2. 
4. Remove the nozzles, screens and the end caps of sprayer booms and clean separately in a bucket 
containing water. 
 
The rinsate solution may be applied back to the crop(s) specified on this label. DO NOT exceed the

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 26 
 
maximum labeled use rate. If cleaners are used, consult the cleaner label for rinsate disposal instructions. 
If no instructions are given, dispose of the rinsate on site or at an approved waste disposal facility. 
 
Notes: 
 
1. Always start with a clean spray tank. Ensure boom sections between end nozzles and the end of the 
boom are clean of deposits (It is advised to remove end caps and visually inspect). If needed, 
thoroughly flush rinse water through the boom sections with the end caps removed to ensure booms 
are clean and free of any residue or deposits. 
2. Steam-cleaning aerial spray tanks is advised to facilitate the removal of any caked deposits. 
3. When Basis Blend is tank mixed with other pesticides, examine all cleanout procedures for each 
product and follow the most rigorous procedure. 
4. Follow any pre-cleanout guidelines advised on other product labels. 
 
 
 Terms and Conditions of Use 
If terms of the following Warranty Disclaimer, Inherent Risks of Use, and Limitation of Remedies are not 
acceptable, return unopened package at once to the seller for a full refund of purchase price paid. To the 
extent consistent with applicable law, use by the buyer or any other user constitutes acceptance of the 
terms under Warranty Disclaimer, Inherent Risks of Use and Limitations of Remedies. 
 
 Warranty Disclaimer 
Corteva Agriscience warrants that this product conforms to the chemical description on the label and is 
reasonably fit for the purposes stated on the label when used in strict accordance with the directions for 
use, subject to the inherent risks set forth below. To the extent consistent with applicable law, Corteva 
Agriscience MAKES NO OTHER EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY OR 
FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER EXPRESS OR IMPLIED WARRANTY. 
 
 Inherent Risks of Use 
It is impossible to eliminate all risks associated with use of this product. Plant injury, lack of performance, 
or other unintended consequences may result because of such factors as use of the product contrary to 
label instructions (including conditions noted on the label, such as unfavorable temperatures, soil 
conditions, etc.), abnormal conditions (such as excessive rainfall, drought, tornadoes, hurricanes), 
presence of other materials, the manner of application or other factors, all of which are beyond the control 
of Corteva Agriscience or the seller. To the extent consistent with applicable law, Corteva Agriscience will 
not be responsible for losses or damages resulting from the use of this product in any manner not 
specifically directed by Corteva Agriscience. To the extent consistent with applicable law, all such risks 
associated with non-directed use shall be assumed by buyer and/or user. 
 
 Limitation of Remedies 
To the extent consistent with applicable law, the exclusive remedy for losses or damages resulting from 
this product (including claims based on contract, negligence, tort, strict liability, or other legal theories), 
shall be limited to, at Corteva Agriscience’s election, one of the following: 
 
1. Refund of purchase price paid by buyer or user for product bought, or 
2. Replacement of product used. 
 
To the extent consistent with applicable law, Corteva Agriscience shall not be liable for losses or 
damages resulting from handling or use of this product unless Corteva Agriscience is promptly notified of 
such loss or damage in writing. To the extent consistent with applicable law, in no case shall Corteva 
Agriscience be liable for consequential, incidental or special damages or losses. 
 
The terms of the Warranty Disclaimer, Inherent Risks of Use, and Limitation of Remedies cannot be 
varied by any written or verbal statements or agreements. No employee or sales agent of Corteva

R6V / Basis Blend / MSTR / Amendment / 06-17-2025 Page 27 
 
Agriscience or the seller is authorized to vary or exceed the terms of the Warranty Disclaimer or this 
Limitation of Remedies in any manner. 
 
 
Produced for: 
Corteva Agriscience LLC 
9330 Zionsville Road 
Indianapolis, IN 46268 
 
 
™
®Trademarks of Corteva Agriscience and its affiliated companies 
 
 
EPA accepted __/__/__