crop-chem-docs/corpus/epa_ppls/352-648.md

# DUPONT SYNCHRONY XP HERBICIDE

- EPA Reg No: **352-648**
- Registrant: CORTEVA AGRISCIENCE, LLC
- Signal word: Caution
- Active ingredients: Thifensulfuron (6.9%); Chlorimuron (21.5%)
- Label accepted: 2022-08-10
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000352-00648-20220810.pdf

---
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
 WASHINGTON, DC 20460 
 
 
 
OFFICE OF CHEMICAL SAFETY 
AND POLLUTION PREVENTION 
 August 10, 2022 
Terri Moss 
Regulatory Specialist 
Corteva Agriscience 
9330 Zionsville Road 
Indianapolis, IN 46268 
 
Subject: Registration Review Label Mitigation for Chlorimuron-ethyl and Thifensulfuron-
methyl 
 Product Name: DUPONT SYNCHRONY XP HERBICIDE 
 EPA Registration Number: 352-648 
 Application Date: 12/19/2017 
Decision Numbers: 585829 and 585880 
 
Dear Terri Moss: 
 
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 Chlorimuron-ethyl and Thifensulfuron-methyl 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. 352-648 
Decision No. 585829 and 585880 
 
If you have any questions about this letter, please contact Srijana Shrestha by phone at 202-566-
2329, or via email at shrestha.srijana@epa.gov. 
 
 Sincerely, 
 
 
 Linda Arrington, Branch Chief 
 Risk Management and Implementation Branch 4 
 Pesticide Re-Evaluation Division 
 Office of Pesticide Programs 
 
Enclosure: Stamped Label

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 1 
(Bulk/Tote Base Label)
Synchrony® XP 
Alternate Brand Name: DuPont Synchrony XP 
HERBICIDE 
Dispersible granules 
For Preemergence, pre-plant incorporated, pre-plant, burndown, and postemergence control or 
suppression of weeds in Soybeans 
Active Ingredients B y Weight 
chlorimuron ethyl 
ethyl 2-[[[[(4-chloro-6-methoxypyrimidin-2-
yl)amino]carbonyl]amino]sulfonyl]benzoate 21.5% 
Thifensulfuron methyl 
Methyl 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-
yl)amino]carbonyl]amino]sulfonyl]-2-thiophenecarboxylate 6.9% 
Other Ingredients 71.6% 
TOTAL 100.0% 
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.) 
First Aid 
x 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. 
x 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. 
x 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 
Causes moderate eye irritation. Harmful if absorbed through the skin, swallowed, or inhaled. Avoid 
contact with eyes, skin or clothing. Avoid inhaling dust. 
CHLORIMURON-ETHYL GROUP 2 HERBICIDE 
THIFENSULFURON-METHYL GROUP 2 HERBICIDE 
Aug 10, 2022
352-648

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 2 
 
 
 
For medical emergencies involving this product, call toll-free 1-800-992-5994. 
 
Personal Protective Equipment (PPE) 
Applicators and other handlers must wear: 
x Long-sleeved shirt and long pants.
x Chemical resistant gloves made of any waterproof material. 
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 Statements 
 
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 requirements may be reduced or modified as specified in the WPS. 
 
Important: When reduced PPE is worn because a closed system is being used, handlers must be 
provided all PPE specified above for “Applicators and Other Handlers” and have such PPE immediately 
available for use in an emergency, such as a spill or equipment breakdown. 
 
User Safety Recommendations 
USERS SHOULD: 
x Wash hands 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.
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 for Nonrefillable Plastic and Metal Containers (Capacity Equal to or Less 
Than 50 Pounds) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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 sanitar
y landfill, or by other procedures approved by state and local authorities.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 3 
 
 
 
(Storage and Disposal for Nonrefillable Plastic and Metal Containers (Capacity Greater Than 50 
Pounds) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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. 
 
(Storage and Disposal for Nonrefillable Plastic and Metal Containers, e.g., Intermediate Bulk 
Containers [IBC] (Size or Shape Too Large to be Tipped, Rolled or Turned Upside Down) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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 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. For Metal Containers, offer for 
recycling if available or reconditioning if appropriate or puncture and dispose of in a sanitary landfill, or 
b
y other procedures approved by state and local authorities. 
 
(Storage and Disposal for Nonrefillable Paper or Plastic Bags, Fiber Sacks including Flexible 
Intermediate Bulk Containers (FIBC) or Fiber Drums With Liners) 
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

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 4 
 
 
 
pesticides, fertilizer, food or feed in storage. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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 bottom 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 b
y incineration. DO NOT burn, unless allowed by state and local ordinances. 
 
(Storage and Disposal for Refillable Fiber Drums With Liners) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: Refillable container (fiber drum only). 
Refilling Fiber drum: Refill this fiber drum with Synchrony
® XP herbicide containing chlorimuron ethyl 
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 b
y state and local ordinances. 
 
(Storage and Disposal for All Other Refillable Containers) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: Refillable container. 
Refilling container: Refill this container with Synchrony XP herbicide containing chlorimuron ethyl 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 such as 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

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 5 
 
 
 
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 b
y state and local authorities. 
 
(Storage and Disposal for Outer Foil Pouches of Water Soluble Packets (WSP)) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: Nonrefillable container. DO NOT reuse or refill this container. 
Offer for recycling if available or, dispose of the empty outer foil pouch in the trash as long as WSP is 
unbroken. If the outer pouch contacts the formulated product in any way, the pouch must be triple 
rinsed with clean water. Add the rinsate to the spray tank and dispose of the outer pouch as described 
previousl
y. 
 
Refer to inside of label booklet for additional precautionary information 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. 352-648 EPA Est. No. ________ 
 
For product information call: 1-800-258-3033 
 
™
®Trademarks of Corteva Agriscience and its affiliated companies 
 
Produced for 
Corteva Agriscience LLC 
9330 Zionsville Road 
Indianapolis, IN 46268
 
 
NET WEIGHT: __________

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 6 
 
 
 
(Booklet Cover / Small Container Label) 
 
 
 
Synchrony® XP 
Alternate Brand Name: DuPont Synchrony XP 
 
HERBICIDE 
Dispersible granules 
 
For Preemergence, pre-plant incorporated, pre-plant, burndown, and postemergence control or 
suppression of weeds in Soybeans 
 
Active Ingredients B y Weight 
chlorimuron ethyl 
ethyl 2-[[[[(4-chloro-6-methoxypyrimidin-2-
yl)amino]carbonyl]amino]sulfonyl]benzoate 
 
 
21.5% 
Thifensulfuron methyl 
Methyl 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-
yl)amino]carbonyl]amino]sulfonyl]-2-thiophenecarboxylate 
 
 
6.9% 
Other Ingredients 71.6% 
TOTAL 100.0% 
 
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 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. 352-648 EPA Est. No. ________ 
 
™®Trademarks of Corteva Agriscience and its affiliated companies 
 
For product information call: 1-800-258-3033 
 
Produced for 
Corteva Agriscience LLC 
9330 Zionsville Road 
Indianapolis, IN 46268 
NET WEIGHT:_________ 
 
CHLORIMURON-ETHYL GROUP 2 HERBICIDE 
THIFENSULFURON-METHYL GROUP 2 HERBICIDE

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 7 
 
 
 
(Page 1 through end): 
First Aid 
 
x 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.

 
x 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.
 
x NOTE: 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 
 
Causes moderate eye irritation. Harmful if absorbed through the skin, swallowed, or inhaled. Avoid 
contact with eyes, skin or clothing. Avoid inhaling dust. 
 
For medical emergencies involving this product, call toll-free 1-800-992-5994. 
 
Personal Protective Equipment (PPE) 
 
Applicators and other handlers must wear: 
x Long-sleeved shirt and long pants.
x Chemical resistant gloves made of any waterproof material. 
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 Statements 
 
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 requirements may be reduced or modified as specified in the WPS. 
 
Important: When reduced PPE is worn because a closed system is being used, handlers must be 
provided all PPE specified above for “Applicators and Other Handlers” and have such PPE immediately 
available for use in an emergency, such as a spill or equipment breakdown. 
 
User Safety Recommendations 
Users should: 
x Wash hands 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. Remove PPE immediately after handling this product.
x Wash the outside of gloves before removing.
x As soon as possible, wash thoroughly and change into clean clothing.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 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 cleaning equipment or disposing of 
equipment washwaters or rinsate. DO NOT apply where/when conditions favor runoff. 
 
Groundwater Label Advisory 
This product has properties and characteristics associated with chemicals detected in groundwater. 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 such as 
ponds, streams, and springs will reduce the potential loading of chlorimuron-methyl and thifensulfuron-
methyl 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. 
 
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. 
 
Windblown Soil Particles 
Synchrony XP 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 [insert 
product name] if prevailing local conditions may be expected to result in off-site movement. 
 
 
 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 responsible for pesticide regulation.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 9 
 
 
 
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 entry into treated areas during the restricted entry interval (REI) of 12 
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: 
x Coveralls.
x Chemical resistant gloves made of any waterproof material. 
x Shoes plus socks.
 
 
Use only in the geographies identified in the “Geographical Use Regions” section of this label. 
 
Synchrony® XP herbicide, referred to below as Synchrony XP, Synchrony XP herbicide, or Synchrony XP 
must be used only in accordance with instructions on this label, in separately published company 
instructions (Supplemental Labels, Special Local Need registrations, FIFRA Section 18 exemptions, 
FIFRA 2(ee) bulletins), or as otherwise permitted by FIFRA. 
 
Always read the entire label, including the Limitation of Warranty and Liability. 
 
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. 
 
(Storage and Disposal for Nonrefillable Plastic and Metal Containers (Capacity Equal to or Less 
Than 50 Pounds) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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 sanitar
y landfill, or by other procedures approved by state and local authorities.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 10 
 
 
 
(Storage and Disposal for Nonrefillable Plastic and Metal Containers (Capacity Greater Than 50 
Pounds) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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. 
 
(Storage and Disposal for Nonrefillable Plastic and Metal Containers, e.g., Intermediate Bulk 
Containers [IBC] (Size or Shape Too Large to be Tipped, Rolled or Turned Upside Down) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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 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. For Metal Containers, offer for 
recycling if available or reconditioning if appropriate or puncture and dispose of in a sanitary landfill, or 
b
y other procedures approved by state and local authorities. 
 
(Storage and Disposal for Nonrefillable Paper or Plastic Bags, Fiber Sacks including Flexible 
Intermediate Bulk Containers (FIBC) or Fiber Drums With Liners) 
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

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 11 
 
 
 
pesticides, fertilizer, food or feed in storage. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: 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 bottom 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 b
y incineration. DO NOT burn, unless allowed by state and local ordinances. 
 
(Storage and Disposal for Refillable Fiber Drums With Liners) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: Refillable container (fiber drum only). 
Refilling Fiber drum: Refill this fiber drum with Synchrony
® XP herbicide containing chlorimuron ethyl 
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 b
y state and local ordinances. 
 
(Storage and Disposal for All Other Refillable Containers) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: Refillable container. 
Refilling container: Refill this container with Synchrony XP herbicide containing chlorimuron ethyl 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 such as 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

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 12 
 
 
 
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 b
y state and local authorities. 
 
(Storage and Disposal for Outer Foil Pouches of Water Soluble Packets (WSP)) 
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. 
 
Pesticide Disposal: DO NOT contaminate water, food, or feed by disposal. Wastes resulting from the 
use of this product must be disposed of on site or at an approved waste disposal facility. 
 
Container Handling: Nonrefillable container. DO NOT reuse or refill this container. 
Offer for recycling if available or, dispose of the empty outer foil pouch in the trash as long as WSP is 
unbroken. If the outer pouch contacts the formulated product in any way, the pouch must be triple 
rinsed with clean water. Add the rinsate to the spray tank and dispose of the outer pouch as described 
previousl
y. 
 
 
Product Information 
 
x Synchrony XP herbicide is a dispersible granule formulation which readily dissolves in water. 
x Synchrony XP may be used in conventional, no-till, or conservation tillage soybean production. 
x Synchrony XP may be used at various rates and by various use methods depending on 
geographical location in the use regions Northern, Central and Southern. 
x Residual applications of Synchrony XP require rainfall or sprinkler irrigation to activate the 
herbicide. degree of control and duration of effect depend on: rate used, weed spectrum, growing 
conditions at and following time of treatment, soil pH, texture, organic matter, moisture and 
precipitation. 
x Best residual control is obtained if Synchrony XP is applied to moist soil and followed by rainfall 
or irrigation (~1”) before weeds germinate. Several small rainfalls of less than 1/4” each are not 
as beneficial as one large rainfall of 1/2-1”. 
 
On dry soil, more moisture is required for activation (1-2”) before weed emergence. If moisture is 
insufficient to activate the herbicide, a rotary hoeing or shallow cultivation should be made after 
emergence of the crop while weeds are small enough to be controlled by mechanical means. Deep 
cultivation reduces the effectiveness of Synchrony XP and should be avoided. 
Biological Activity 
 
Synchrony XP rapidly inhibits the growth of susceptible weeds. Following application of preplant or 
preemergence treatment, susceptible weeds may germinate and emerge, but growth then ceases, and 
leaves become yellow and/or brown by 3-5 days after emergence. Death of leaf tissue and growing point

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 13 
 
 
 
will follow in some species while others will remain green but stunted and noncompetitive. 
 
Synchrony XP will provide best results when applied postemergence to young, actively growing weeds. 
Leaves of susceptible plants yellow 3-5 days after application, followed, in controlled plants, by the death 
of the growing point. 
 
Synchrony XP will provide complete control of susceptible weeds in 7-21 days. Suppressed plants may 
remain green but will be stunted and noncompetitive. Degree of control depends on: weed spectrum; 
weed size (if weeds are large, use higher spray volume); growing conditions at and following treatment; 
soil moisture; precipitation; and spray adjuvants. 
 
Treating weeds under stress or large weeds may result in only partial control. Stress may be caused by: 
x abnormal weather (hot or cold) 
x mechanical injury from cultivation 
x drought 
x water-saturated soil 
x disease 
x insect injury 
x prior herbicide injury 
 
Important Use Restrictions 
 
x DO NOT graze treated fields or harvest for hay within 14 days after application. 
x Synchrony XP can be applied in tank mixtures with organophosate insecticides or at any time 
preceding or following an application of an organophosphate insecticide on any STS®, STS®/RR 
soybean variety or soybeans with BOLT™ technology. Tank mixtures of Synchrony XP plus 
organophosphate insecticides applied to STS®, STS®/RR soybean varieties or soybeans with 
BOLT™ technology may result in minor transient crop response (i.e. stunting and/or chlorosis). 
x DO NOT apply Synchrony XP within 14 days before or after an application of an 
organophosphate insecticide on any soybean variety that is not STS®, STS®/RR or soybeans with 
BOLT™ technology, as severe crop injury may occur. 
x DO NOT apply more than a total of 0.82 ounces active ingredient chlorimuron ethyl per acre per 
year in the Northern and Central Region states or 1.07 ounces active ingredient chlorimuron ethyl 
per acre per year in the Southern Region states. This includes combinations of preemergence 
and postemergence applications of chlorimuron ethyl products. 
x DO NOT apply more than a total of 0.75 ounces active ingredient of thifensulfuron methyl per 
acre per year in all use regions specified on this label. 
x DO NOT apply this product in a way that will contact workers or other persons, either directly or 
through drift. 
x Only protected handlers may be in the area during application. 
x DO NOT apply this product through any type of irrigation system. 
x DO NOT use liquid nitrogen fertilizer as the total carrier solution. 
x DO NOT apply to frozen or snow covered ground. 
x DO NOT cultivate within 7 days of application. 
x DO NOT tankmix “Poast Plus” with 0.375 oz/acre Synchrony XP unless the soybean is 
designated as an STS
® variety or soybeans with BOLT™ technology. 
x DO NOT apply during a temperature inversion, when winds are gusty, or when other conditions 
could produce poor coverage and/or off-target spray movement. 
x DO NOT apply Synchrony XP herbicide by air in the state of New York. 
x DO NOT apply Synchrony XP if rain is expected within 1 hour or weed control may decrease. 
x Many crops are sensitive to Synchrony XP. Avoid all direct or indirect contact (such as spray drift) 
with crops other than soybeans. 
x Thoroughly clean all application equipment immediately after use and prior to spraying crops 
other than soybeans.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 14 
 
 
 
 
Injury to or loss of desirable trees or vegetation may result from failure to observe the following: 
x DO NOT apply Synchrony XP or drain or flush equipment on or near desirable trees or other 
plants, on areas where their roots may extend, or in locations where the chemical may be washed 
or moved into contact with their roots. 
x DO NOT use on lawns, walks, driveways, tennis courts or similar areas. 
 
Important Use Precautions 
 
x Calibrate sprayers only with clean water away from the well site. 
x Make scheduled checks of spray equipment. 
x Ensure that all operation employees accurately measure pesticides. 
x Mix only enough product for the job at hand and avoid overfilling of spray tank. 
x When triple-rinsing the pesticide container, be sure to add the rinsate to the spray mix. 
x Failure to remove even small amounts of Synchrony XP from application equipment may result in 
injury to subsequently sprayed crops. 
x Keep from contact with fertilizers, insecticides, fungicides and seeds during storage. 
x Avoid storage of pesticides near well sites. 
x Stress effects some weeds, such as pigweed, more than others. Delay application until stress 
passes and weeds start to grow again. 
x Severe stress (drought, disease, insect damage, or nutrient deficiency such as iron chlorosis) 
following application may also result in poor weed control. 
x Applications made when the crop is under stress from moisture, cold, heat, high humidity, 
disease, insect pressure and prior herbicide stress may result in excessive crop response. 
 
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 unless making a rangeland application, in which case 
applicators may apply with a nozzle height no more than 4 feet above the ground. 
x For applications prior to the emergence of crops and target weeds, applicators are required to 
use a coarse or coarser droplet size (ASABE S572.1). 
x For all other applications, applicators are required to use a Medium or coarser droplet size 
(ASABE S572.1). 
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 S572.1).
x For all other applications, applicators are required to use a Medium or coarser droplet size 
(ASABE S572.1).
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.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 15 
 
 
 
Boom-less Ground Applications: 
x Applicators are required to use a Medium or coarser droplet size (ASABE S572.1) for all 
applications. 
x DO NOT apply when wind speeds exceed 10 miles per hour at the application site. 
x DO NOT apply 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 most effective way to reduce drift potential 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 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 
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. 
 
BOOMLESS GROUND APPLICATIONS 
Setting nozzles at the lowest effective height will help to reduce the potential for 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. 
 
HANDHELD TECHNOLOGY APPLICATIONS 
Take precautions to minimize 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

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 16 
 
 
 
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 increases with wind speed. AVOID APPLICATIONS DURING GUSTY WIND 
CONDITIONS. Applicators need to be familiar with local wind patterns and terrain that could affect spray 
drift. 
 
Sensitive Areas 
 
Making applications when there is a sustained wind moving away from adjacent sensitive areas (e.g., 
residential areas, bodies of water, known habitat for threatened or endangered species, non-target crops) 
is an effective way to minimize the effect of 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 
Chemical Producers and Distributors Association (CPDA). 
 
Shielded Sprayers 
 
Shielding the boom or individual nozzles can reduce the effects of wind. However, it is the responsibility 
of the applicator to verify that the shields are preventing drift and not interfering with uniform deposition of 
the product. 
 
Air Assisted (air blast) Field Crop Sprayers 
 
Air assisted field crop sprayers carry droplets to the target via a downward directed air stream. Some may 
reduce the potential for drift, but if a sprayer is unsuitable for the application and/or set up improperly, 
high drift potential can result. It is the responsibility of the applicator to determine that a sprayer is suitable 
for the intended application, is configured properly, and that drift is not occurring. 
 
Air Assisted (air blast) Tree and Vine Sprayers 
 
Air assisted tree and vine sprayers carry droplets into the canopy of trees and vines via a radially or 
laterally directed air stream. These sprayers are not suitable for applying herbicides. 
 
 
Herbicide Resistance Management 
 
Synchrony XP, which contains the active ingredients chlorimuron ethyl and thifensulfuron methyl, are both 
group 2 herbicides based on the mode of action classification system of the Weed Science Society of 
America. 
 
When herbicides with mode of action classifications that effect the same biological sites of action are 
used repeatedly over several years to control the same weed species in the same treatment area, 
naturally-occurring resistant biotypes may survive a correctly applied herbicide treatment, propagate, and 
become dominant in that area. Adequate control of these resistant weed biotypes cannot be expected. If 
weed control is unsatisfactory, it may be necessary to retreat the problem area using a product effecting a 
different biological site of action. 
 
To better manage herbicide resistance through delaying the proliferation and possible dominance of 
herbicide resistant weed biotypes, it may be necessary to change cultural practices within and between

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 17 
 
 
 
crop seasons such as using a combination of tillage, retreatment, tank-mix partners and/or sequential 
herbicide applications that have a different site of action. Weed escapes that are allowed to go to seed 
will promote the spread of resistant biotypes. 
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 If using post-emergence herbicides or tank mixes, control weeds early when they are relatively 
small. 
x Apply full rates of Canopy Blend for the most difficult to control weed in the field at the specified 
time to minimize weed escapes. 
x Scout fields after application to detect weed es capes 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 local 
company representative, local retailer, or county extension agent. 
x Contact your local company representative, crop advisor, or extension agent to find out if 
suspected resistant weeds to these MOAs have been found in your region. Do not assume that 
each listed weed is being controlled by multiple mode of action. Products with multiple active may 
be controlled by only one of the active ingredients in this product. 
x If resistance is suspected, treat weed escapes with an herbicide having a mode of action other 
than Group 2 and 5 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: 
ƒ Failure to control a weed species normally controlled by the herbicide at the dose applied, 
especially if control is achieved on adjacent weeds; 
ƒ A spreading patch of non-controlled plants of a particular weed species; and 
ƒ 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 herbicide with other mode of action as a foundation in a weed control 
program, if appropriate. 
x Utilize sequential applications of herbicides with alternative modes of action. 
x Rotate the use of this product with non-Group 2 and/or 5 herbicides. 
x Avoid making more than two sequential applications of Canopy Blend and any other Group 2 
and/or 5 herbicides within a single growing season unless mixed with an herbicide with a different 
mode of action with an overlapping spectrum for the difficult-to-control weeds. 
x Incorporate non-chemical weed control practices, such as 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 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 
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.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 18 
 
 
 
Application Information 
 
Geographic Use Regions 
 
The geographical use regions for Synchrony XP are defined below: 
 
Northern Region: The states of Iowa (fields inside the boundaries of the Clarion-Nicollet-Webster and 
Hamburg-Ida-Monona soil associations and fields located inside the historic floodplain of the Missouri 
river), Minnesota, Nebraska (fields north of route 30 and west of route 281), New York (fields north of 
interstate 90), South Dakota, Wisconsin (fields north of interstate 90 between Lacrosse and Madison and 
fields north of interstate 94 between Madison and Milwaukee) and Hawaii. 
 
Central Region: The states of Delaware, Illinois, Indiana, Iowa (fields located outside the boundaries of 
the Clarion-Nicollet- Webster and Hamburg-Ida-Monona soil associations and fields located outside the 
historic flood plain of the Missouri river), Kansas, Maryland, Michigan, Missouri (except the bootheel), 
Nebraska (fields south of route 30 or east of route 281), New Jersey, New York (fields south of interstate 
90), Ohio, Pennsylvania , Virginia, West Virginia and Wisconsin (fields south of interstate 90 between 
Lacrosse and Madison and fields south of interstate 94 between Madison and Milwaukee). 
 
Southern Region: The states of Alabama (except the “Black Belt” where soil pH must be less than 7.0), 
Arkansas, Florida, Georgia, Kentucky, Louisiana, Missouri (bootheel region only), Mississippi (except the 
“Black Belt” where soil pH must be less than 7.0), North Carolina, Oklahoma, South Carolina, Tennessee 
and Texas (fields east of route 183). 
 
Application Methods 
 
x preemergence, including pre-plant incorporated.
x pre-plant and early pre-plant, including burndown.
x postemergence in-crop
x sequential preemergence followed by postemergence
 
Timing to Crop Stage 
 
x Synchrony XP for PRE, PPI and burndown uses may be applied any time prior to soybean 
emergence.
x Synchrony XP, for in-season use on STS® soybeans or soybeans with BOLT™ technology, may 
be applied any time after emergence but no later than 60 days before soybean maturity.
x Synchrony XP, for in-season use on non-STS® soybeans, may be applied any time after the first 
trifoliate but no later than 60 days before soybean maturity.

Timing to Weeds 
 
Apply Synchrony XP when weeds are young and actively growing. Applications made to weeds larger 
than the sizes indicated below, or to weeds under stress, may result in unsatisfactory control. 
 
Spray Additives 
 
Applications of Synchrony XP must include either a crop oil concentrate or a nonionic surfactant. crop oil 
concentrate is the required adjuvant system unless tank mixing with a product that precludes use of crop 
oil concentrate. An ammonium nitrogen fertilizer may also be required. 
 
Products that combine ammonium fertilizers with surfactants or crop oils must meet all of the 
surfactant/crop oil and ammonium nitrogen fertilizer requirements.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 19 
 
 
 
Consult local company fact sheets, technical bulletins, and service policies prior to using other adjuvant 
systems. If another herbicide is tank mixed with Synchrony XP, select adjuvants authorized for use with 
both products. Adjuvants must contain only EPA- exempt ingredients. 
 
Crop Oil Concentrate (COC) - Petroleum or Modified Seed Oil (MSO) 
 
x Apply at 1% v/v (1 gal per 100 gal spray solution) or 2% under arid conditions.
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) or 0.5% under arid conditions.
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), such as 28%N or 32%N, or 2 
lb/acre of a spray grade ammonium sulfate (AMS). Use 4 qt/acre UAN or 4 lb/acre AMS under 
arid conditions.

x DO NOT use liquid nitrogen fertilizer as the total carrier solution.
 
Special Adjuvant Types 
 
x Combination adjuvant products may be used at doses that provide the required amount of NIS, 
COC, MSO and/or ammonium nitrogen fertilizer. Consult product literature for use rates and 
restrictions.
x In addition to the adjuvants specified above, other adjuvant types may be used if they provide the 
same functionality and have been evaluated and approved by Corteva Agriscience product 
Management.
 
Tank Mixes 
 
Synchrony XP can be applied in tank mixtures with organophosate insecticides or at any time preceding 
or following an application of an organophosphate insecticide on any STS
®, STS®/RR soybean variety or 
soybeans with BOLT™ technology. Tank mixtures of Synchrony XP plus organophosphate insecticides 
applied to STS
®, STS®/RR soybean varieties or soybeans with BOLT™ technology may result in minor 
transient crop response (i.e. stunting and/or chlorosis). DO NOT apply Synchrony XP within 14 days 
before or after an application of an organophosphate insecticide on any soybean variety that is not STS®, 
STS®/RR or soybeans with BOLT™ technology, as severe crop injury may occur. 
 
Other than the exceptions noted, and in addition to the tank mix partners and rates indicated in this label, 
Synchrony XP may be tank mixed or followed with sequential applications of other products registered for 
use in soybeans. Synchrony XP may be applied in tank mix combinations with full or reduced rates of 
other products provided: 
 
The tank mix product is labeled for the same timing, method of application, adjuvants, and use restrictions 
as Synchrony XP 
. 
The tank mix is not specifically prohibited on the label of the tank mix product. 
 
The tank mix combination is compatible as determined by a “jar test” described in the TANK MIX 
COMPATIBILITY TESTING section below.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 20 
 
 
 
Weed control and crop safety resulting from the use of tank mixtures not specifically noted on this label, 
or in separately published company directions, are the responsibility of the user. 
 
Tank Mix Compatibility Testing 
 
Perform a jar test prior to tank mixing to ensure compatibility of Synchrony XP and other pesticides. Use a 
clear glass 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 
balls-up, forms flakes, sludges, gels, oily film or layers, or other precipitates, it is not compatible. 
 
Mixing Instructions 
 
1. Fill the tank 1/4 to 1/3 full of water.
2. While agitating, add the required amount of Synchrony XP.
3. Continue adequate agitation.
4. Synchrony XP needs to be thoroughly mixed with water in the spray tank before adding 
any other material. As the tank is filling, add (in order): other herbicide(s), the required spray 
adjuvant, and the nitrogen fertilizer where required.
5. Apply Synchrony XP spray preparation within 24 hours of mixing to avoid product degradation.
6. If the mixture has settled, thoroughly reagitate before using.
 
Cultivation 
 
DO NOT cultivate within 7 days of application. Cultivation may put weeds under stress by pruning roots, 
thus diminishing control. 
 
Cultivation approximately 14 days after application will help control suppressed weeds. 
 
Fall Application in the Northern Region 
 
Tank mixes of Synchrony XP at 0.375 oz/acre plus DuPont™ EXPRESS® brand herbicides are directed 
for fall burndown of 3-inch dandelion in conservation tillage or no-till soybean production systems. 
 
Apply 0.375 oz/acre Synchrony XP -plus- EXPRESS
® brand herbicides - plus- crop oil concentrate -plus- 
2, 4-d LVE or dicamba. 
 
Synchrony XP + EXPRESS
® brand herbicides may be applied to no-till or conservation tillage fields 
anytime after the fall harvest, up to 45 days prior to soybean planting. 
 
Preemergence or Preplant Spring Application: Central and Southern Regions Only 
 
Synchrony XP at 1.0 to 3.0 oz/acre may be used for preemergence weed control in all states located in 
Synchrony® XP Central and Southern rotational regions (excluding Florida). Use higher rates for longer 
lasting residual control. 
 
Application Timing - Synchrony XP may be applied from 45 days before planting soybeans to just 
before soybean emergence.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 21 
 
 
 
Application Rates: 
 
Medium and Fine Soils, 
1.5% - 4% Organic Matter Rate 
Central Region States: 
No pH restriction* 
Composite soil pH of 7 or less 
 
1.0 oz/acre 
1.25 – 3.0 oz/acre 
Southern Region States: 
No pH restriction 
Composite soil pH of 7 or less 
 
1.0 – 1.5 oz/acre 
1.5 
– 3.0 oz/acre 
* In Michigan, New York and Wisconsin, DO NOT apply the 1 oz/acre rate to soils exceeding pH 7.6. in all other states, the soil pH is 
unrestricted for the 1 oz/acre rate. 
 
Preemergence Residual Control 
 
When used as directed, applications of 1.25 – 3.0 oz/acre Synchrony XP will provide preemergence 
control or partial control (suppression) of the following weeds: 
 
Control 
Cocklebur 
Jimsonweed 
Lambsquarters 
Marestail 
Morningglory, annual, ivyleaf, 
entireleaf, pitted, smallflower, tall 
Mustard, wild 
Pigweed, redroot, smooth 
Purslane, speedwell 
Ragweed, common 
Smartweeds, annual 
Velvetleaf 
Suppression 
Annual grasses 
(foxtails, barnyardgrass, 
crabgrass, panicum) 
Chickweed, common 
Nutsedge, yellow, purple 
Prickly Sida (teaweed) 
Ragweed, giant 
 
Early spring applications of 1.0 oz/acre Synchrony XP will provide limited residual control of the above- 
listed weeds to contribute to a clean seed bed at planting. 
 
If applying 1.0 oz/acre Synchrony XP under heavy weed pressure, delayed planting, or adverse 
environmental conditions, additional control measures at planting may be required. 
 
For improved residual control, Synchrony XP may be tank mixed with such products as linuron, 
metribuzin-containing products, such as “Boundary”, “Valor” , metolachlor such as Cinch
® herbicide, 
pendimethalin or pyroxasulfone (Zidua). 
 
Burndown Control of existing winter and summer annual weeds 
 
Synchrony XP spring preplant applications will provide burndown control of certain broadleaf weeds 
which are no greater than 3 inches in height. 
 
To obtain burndown of the weed species listed below: 
 
x Addition of crop oil concentrate is required.
x Use a minimum of 20 gallons per acre with spray nozzles that provide thorough spray coverage 
of the weeds.
x 2,4-D LVE or dicamba may be added for enhanced burndown control.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 22 
 
 
 
Weeds Controlled From a Burndown Application: 
 
Bittercress, small-flowered Pepperweed 
Bus
y wallflower Pi gweed 
Buttercup, smallflower Ra gweed, common, giant 
Butterweed Shepherd’s-purse 
Dandelion Smartweed, annual 
Deadnettle, purple Speedwell field, purslane 
Garlic, wild* Sunflower 
Henbit Tans
ymustard 
Lambsquarters Thistle - Canadian (above ground portion) 
Lettuce, prickly Velvetleaf 
Marestail* Whitlow grass 
Mustard, wild Yellow rocke t 
Pennycress 
 
*Addition of 2,4-d LVE is required. 
 
For burndown of larger annual grasses or broadleaf weeds exceeding 1-3”, or for burndown of weeds not 
listed, Synchrony XP may be tank mixed with herbicides such as ASSURE® II, EXPRESS® brands, 
PANOFLEX™ herbicide, dicamba, glyphosate such as ABUNDIT® brand, glufosinate (Liberty), paraquat, 
saflufenacil (Sharpen) or 2,4-D (LVE). 
 
Planned Sequential Programs 
 
Synchrony XP may be followed as needed by sequential applications of one or more postemergence 
herbicides such as glyphosate (such as ABUNDIT
® brand) in glyphosate tolerant soybeans, glufosinate in 
glufosinate tolerant soybeans, CLASSIC®, Synchrony XP or HARMONY® SG herbicide (with TotalSol® 
soluble granules). To ensure maximal rotation flexibility when considering a sequential program of 
Synchrony XP followed by CLASSIC® or Synchrony XP, carefully consider: the soil pH, the directions 
below, the rotational information in this section, and the rotational crop guidelines. 
 
For applications of 1.0 oz/acre Synchrony XP to Central and Southern Region states on soils with 
pH greater than 7.0, DO NOT apply additional chlorimuron-ethyl-containing herbicides (CLASSIC®, 
Synchrony XP) except in the states of AL, AR, GA, LA, MO bootheel, MS, NC, OK, SC, TN, and TX, 
where up to 0.5 oz/acre CLASSIC
® or 0.75 oz/acre Synchrony XP may be applied. 
 
For applications of 1.5 oz/acre Synchrony XP to Southern Region states on soils with pH greater 
than 7.0, DO NOT apply additional chlorimuron-ethyl-containing herbicides (CLASSIC
®, Synchrony XP). 
 
For applications of 1.0 - 3.0 oz Synchrony XP to Central and Southern Region States on soils with 
pH less than 7.0, a single follow up postemergence application of CLASSIC
® or Synchrony XP may be 
made. See table below for rates that may be applied: 
 
 
PREEMERGENCE APPLICATIONS 
Synchrony XP oz/acre 
 POSTEMERGENCE APPLICATIONS 
CLASSIC® oz/acre 
POSTEMERGENCE APPLICATIONS 
Synchrony XP oz/acre 
up to 2.0 
2.1 - 2.5 
2.6 - 3.0 
 up to 0.75 
up to 0.67 
up to 0.25 
up to 0.75 
up to 0.75 
none 
 
Refer to the sequential herbicide labels for specific information regarding use rates, application timing, 
crop rotations and other restrictions and precautions. 
 
Rotational Crop Information 
 
For rotational crop information following 1.0 oz/acre Synchrony XP in central region states, and up to 1.5

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 23 
 
 
 
oz/acre applications in Southern Region states, use recrop interval 1 or 2 in the ‘Rotational Crop 
Guidelines’ section of this label. For application of Synchrony XP greater than 1.0 oz/acre in the Central 
region and greater than 1.5 oz/acre in the Southern region, use recrop interval 4 in the 'rotational crop 
guidelines' section of this label. Sequential applications of Synchrony XP or CLASSIC
® following 1.0 - 3.0 
oz of Synchrony XP on soils with pH less than 7.0 also use recrop interval 4. 
 
Synchrony XP Plus Glyphosate Spring Burndown: All Regions 
 
Synchrony XP at 0.375-0.75 oz/acre may be tank mixed with glyphosate-containing herbicides, such as 
ABUNDIT
® brand, for burndown of existing summer and winter annual weeds and limited residual control 
of certain summer annual broadleaf weeds. refer to 'Rotational Crop Guidelines' to provide guidance on 
allowable use rates by region. 
 
Application Timing 
 
Synchrony XP plus glyphosate, such as ABUNDIT
® brand, tank mixtures may be applied up to 30 days 
before planting or prior to soybean emergence after planting. 
 
Weeds Controlled 
 
Synchrony XP tank mixed with glyphosate containing herbicides such as ABUNDIT
® brand applied prior 
to planting will provide burndown control of the weeds listed above as well as control of most winter and 
summer annual broadleaf and grass weeds. Consult the glyphosate specimen labels for specific use 
instructions including all weeds controlled or suppressed, the directed use rates, maximum weed size at 
application, restrictions, limitations and precautions. The addition of Synchrony XP to glyphosate-
containing herbicides will increase the burndown control of the following weeds versus application of 
glyphosate alone: 
 
Dandelion Mornin
gglory Spp., annual 
Dock, curly Nutsed ge, yellow 
Hemp sesbania Primrose, cutleaf evenin g 
Henbit Ra gweed, common and giant 
Ladysthumb Sicklepod 
Lambsquarters Smartweed, Penns ylvania 
Marestail (non ALS resistant) Velvetleaf 
 
Weeds Controlled – Limited Preemergence 
 
When used according to this label, Synchrony XP at 0.75 oz/A can provide limited preemergence control 
of the weeds listed below to contribute to a clean seedbed at planting. For season-long control, a planned 
PRE or POST sequential program is required. 
 
Jimsonweed Palmer amaranth 
Lad
ysthumb Pi gweed, redroot, smooth 
Lambsquarters Smartweeds, Penns ylvania 
Marestail Ra gweed spp. 
Nutsedge, yellow 
 
Synchrony XP Postemergence – Any Soybean: All Regions 
 
Application Rates 
 
Synchrony XP at 0.375 oz/acre may be applied postemergence to any soybean for broadleaf weed 
control.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 24 
 
 
 
Timing to Weeds 
 
Apply 0.375 oz/acre Synchrony XP to 1 - 4” weeds that are actively growing. Applications made to weeds 
that are in the cotyledon stage, larger than the size indicated, or to weeds under stress may result in 
unsatisfactory control. 
 
Spray Additives 
 
Add nonionic surfactant and ammonium nitrogen fertilizer as noted in 'Spray Additives' under 'Application 
Information- All Uses' 
 
Weeds Controlled: 
 
Cocklebur 
Pigweed species (non ALS resistant) 
Wild sunflower 
 
Weeds suppressed: 
 
Lambsquarters 
Jimsonweed 
Milkweed, common (above ground portions only) 
Ragweed, common 
Smartweeds, annual 
Velvetleaf 
 
Synchrony XP and glyphosate tankmixes 
 
A tank mix of Synchrony XP at 0.375 oz/acre plus glyphosate (such as ABUNDIT® brand) will control the 
weeds listed in the table below. 
 
See the glyphosate manufacturer's label for specific ammonium sulfate and surfactant directions. 
 
 
 
 
Weeds Controlled 
Maximum weed height in inches 
0.375 oz/ac Synchrony XP 
+ glyphosate 
Barnyardgrass 6 
Cocklebur 8 
Corn, volunteer (non roundup ready) 20 
Crabgrass species 10 
Dandelion 4 
Foxtail species 10 
Hemp sesbania 4 
Jimsonweed 10 
Ladysthumb 8 
Lambsquarters 6 
Morningglory, entireleaf, ivyleaf, 4 
pitted, tall 4 
Nightshade, eastern black 5 
Nutsedge, yellow 6 
Panicum, fall, Texas 10 
Pigweed, redroot, rough 12

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 25 
 
 
 
Prickly sida 4 
Ragweed, common, giant 8 
Sicklepod 4 
Signalgrass, broadleaf 4 
Smartweed, Pennsylvania 8 
Sunflower 8 
Velvetleaf 4 
 
 
Other Synchrony XP Tank Mixes 
Synchrony can be tank mixed with Cinch®, “Flexstar” brand, “FirstRate”, HARMONY® SG 
herbicide (with TotalSol® soluble granules), or glufosinate (Liberty). 
Refer to the tank mix partner labels for other weeds controlled and for the appropriate rate based on the 
weed sizes. Read and follow all use directions, restrictions and precautions of both Synchrony XP and the 
tankmix partners. When tankmixing, the most restrictive labeling applies. 
 
Precautions for 0.375 oz Synchrony XP uses 
 
x A temporary crop response may occur following an application of Synchrony XP to soybeans not 
designated STS® or soybeans with BOLT™ technology.
x Applications made when the crop and weeds are under stress from moisture, cold, heat, high 
humidity, disease, insect pressure and prior herbicide stress may result in excessive crop 
response and/or reduced weed control effectiveness.
 
Synchrony XP Postemergence – For Use On Soybean Varieties Designated as 
STS®/RR STS® or Soybeans with Bolt™Technology All Regions 
 
x Application of greater than 0.375 oz/acre Synchrony XP to soybean varieties not designated as 
STS®/RR, STS® or soybeans with BOLT™ technology will result in severe crop injury and/or yield 
loss.
x Corteva Agriscience will not warrant the safety of this treatment to seed saved from previous 
year’s production (bin run seed).
x These STS®/RR, STS® varieties or soybeans with BOLT™ technology must be purchased from 
an authorized seed supplier.
x The STS®/RR, STS® or BOLT™ technology designation indicates the soybean variety contains a 
proprietary trait that enhances the soybean’s natural tolerance to soybean sulfonylurea 
herbicides. Information on STS®/RR, STS® soybean varieties or soybeans with BOLT™ 
technology may be obtained from your seed supplier or company representative.
 
Application Rates 
 
Synchrony XP may be applied postemergence in STS
® soybeans or soybeans with BOLT™ technology at 
0.375 - 1.125 oz/acre. For rate limitations in certain geographies, see the "Rotational Crop Guidelines" 
section.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 26 
 
 
 
Weeds Controlled 
 
Apply Synchrony XP at a rate of 0.375 to 1.125 oz/acre for selective postemergence control of the 
broadleaf weeds in the table below: 
 
 
Weed 
Maximum Height (in inches) 
0.375 oz/ac 0.75-1.125 oz/ac 
Beggarticks (bidens sp) 6 
Bristly starbur 3 
Buffalobur 6* 
Burcucumber 3 
Cocklebur 6 8 
Cowpea 5 
Dandelion (above ground portion) 3* 4 
Florida beggarweed 5 
Hemp sesbania 5 
Jerusalem artichoke (above ground portion) 6 
Jimsonweed 3 5 
Kochia 3* 
Ladysthumb 4 8 
Lambsquarters 4* 4 
Marestail (non ALS resistant) 2 5 
Milkweed, common (above ground portion) 4* 6 
Morningglory (annual) 
Entireleaf 2* 3 
Ivyleaf 2* 3 
Pitted 2* 3 
Smallflower 2* 3 
Tall 2* 3 
Mustard 4 5** 
Nutsedge, purple 4* 
Nutsedge, yellow 3* 3 
Palmer amaranth (non ALS resistant) 4 8 
Pigweeds 
Redroot (rough) 8 8 
Others (non ALS resistant) 8 
Pokeweed 3* 6* 
Ragweed 
Common 4* 4 
Giant 4* 4 
Sicklepod 3 
Smartweed, Pennsylvania 4 8 
Sowthistle, perennial (rosette stage) 6* 6 
Spurred anoda 3* 
Sunflower 4 8 
Thistle, Canadian 4* 
Thistle, Russian 3* 
Wild poinsettia 2

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 27 
 
 
 
Velvetleaf 4* 8 
Venice mallow 3* 
Wild carrot 4* 6 
*Suppression 
**Diameter 
 
Apply Synchrony XP at 1.125 oz/acre to preserve the STS® trait in STS® soybean seed production. 
Synchrony XP used at 1.125 oz/ac will give residual control of newly germinating broadleaf weeds (see 
Preemergence or Preplant Spring Application, Preemergence Residual Control). 
 
Sequential Applications: 
 
A follow up application of CLASSIC
® herbicide or Synchrony XP herbicide may be made 2-3 weeks after 
a Synchrony XP application to control weeds with multiple germination flushes or weeds under stress 
such as burcucumber, cowpea, giant ragweed, morningglory, and sicklepod. See Rotational Crop 
Guidelines for intervals following sequential applications. 
 
Spray Additives 
 
For directions for use on addition of crop oil concentrate, nonionic surfactant and ammonium nitrogen 
fertilizer, see the 'Spray Additives' section under 'Application Information - All Uses’. 
 
Tank Mixes 
 
Synchrony XP and glyphosate herbicides such as ABUNDIT
® brand herbicides on STS®/RR 
stacked-trait soybeans or soybeans with BOLT™ technology: 
 
Synchrony XP may be tank mixed with glyphosate-containing herbicides for improved control of broadleaf 
weeds not completely controlled by either product alone. 
 
Synchrony XP and “Flexstar” brands, “Reflex”, “Ultra Blazer”, or “Cobra” Herbicides On Any 
STS
® soybean or soybeans with BOLT™ technology: 
 
For control of up to 2” eastern black nightshade and for improved common ragweed control, Synchrony 
XP may be tankmixed with "Flexstar" brands, "Reflex”, "Ultra Clazer" or "Cobra" herbicides. 
 
For control of prickly sida and hemp sesbania, tank mix Synchrony XP with “Cobra”. Use the higher 
“Cobra” rate when prickly sida or hemp sesbania are heavy or if prickly sida and hemp sesbania 
approach the maximum size of 1” or 4”, respectively. DO NOT use crop oil concentrate when tankmixing 
Synchrony XP and “Cobra” at the higher rates. 
 
Tank mix applications of Synchrony XP plus “Flexstar”, “Reflex”, “Ultra Blazer”, or “Cobra” may not control 
weeds listed on the Synchrony XP label as completely as applications of Synchrony XP alone. 
 
Refer to the “Flexstar”, “Reflex”, “Ultra Blazer” and “Cobra” labels for the appropriate rate based on the 
weed sizes to be controlled. 
 
Synchrony XP and “FirstRate” herbicide: 
 
For improved ragweed (non ALS resistant) and cocklebur control, add between 0.075 - 0.3 oz/acre 
“Firstrate” to SYNCHRONY® XP. These tankmixes will control up to 10” cocklebur or common ragweed 
and up to 12” giant ragweed. Use a lower amount of “Firstrate” when weeds are less than the maximum 
size and under good growing conditions. Use a higher amount of “Firstrate” when weeds are approaching 
the maximum size and/or under unfavorable growing conditions.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 28 
 
 
 
Synchrony XP and Postemergence Grass Herbicides: 
 
Synchrony XP and Synchrony XP tankmixes may be tank mixed with postemergence grass herbicides 
such as ASSURE
® II herbicide. For best results, apply Synchrony XP seven days before or one day after 
the grass herbicide. Refer to the grass herbicide label for precautions and specific use information. 
 
Application Equipment 
 
Ground Application (see also Mandatory Spray Drift Management) 
 
Broadcast Application 
 
x Postemergence in soybeans, use a minimum of 10 gal water per acre. Under heavy weed 
pressure or dense crop foliage, increase minimum spray volume to 15-25 gal per acre. For best 
performance, select nozzle and pressure combinations that deliver medium to coarse spray 
droplets, as indicated, for example, by ASABE standard S572.

x Preemergence in soybeans, use a minimum of 10 gal water per acre. For best performance, 
select nozzle and pressure combinations that deliver coarse to very coarse spray droplets, as 
indicated, for example, by ASABE standard S572.
x For burndown applications of existing vegetation, use a minimum of 15 gal water per acre. For 
large weeds and/or heavy residue, increase gallonage to ensure coverage. For best performance, 
select nozzle and pressure combinations that deliver medium to coarse spray droplets, as 
indicated, for example, by ASABE standard S572.
 
Aerial Application 
(See Also Mandatory Spray Drift Management) 
 
x Use nozzle types and arrangements that will provide optimum spray distribution and maximum 
coverage at 2-5 gal per acre.
x Use a minimum of 2 gal water per acre. under heavy weed pressure or dense crop foliage, 
increase the minimum spray volume to 5 gal per acre.
x DO NOT apply during a temperature inversion, when wind speed is less than 2 mph or above 10 
mph, or when other conditions could produce poor coverage and/or off-target spray movement.
x DO NOT apply Synchrony XP herbicide by air in the state of New York
 
Rotational Crop Guidelines – All Uses 
 
Crop rotation intervals noted in the table below are based on crops grown under favorable growing 
conditions. Crops grown under unfavorable environmental conditions, such as drought, nutrient 
deficiency, high salts, disease and insect pressure may demonstrate reduced tolerance to crop protection 
chemicals. When deciding on a particular crop to replant in your fields, carefully consider your particular 
soil and other field conditions (see IMPORTANCE OF SOIL PH section of this label). 
 
x Important: Crops other than soybeans following a Synchrony XP application can vary in their 
sensitivity to low concentrations of Synchrony XP remaining in the soil. Rotational crop guidelines 
must be followed.
 
Northern Region: The states of Minnesota, South Dakota, Wisconsin (fields north of interstate 90 
between Lacrosse and Madison and fields north of interstate 94 between Madison and Milwaukee), Iowa 
(fields inside the boundaries of the Clarion-Nicollet-Webster and Hamburg-Ida-Monona soil associations 
and fields located inside the historic floodplain of the Missouri river), Nebraska (fields north of route 30 
and west of route 281), and New York (fields north of interstate 90).

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 29 
 
 
 
Central Region: The states of Delaware, Illinois, Indiana, Iowa (fields located outside the boundaries of 
the Clarion-Nicollet- Webster and Hamburg-Ida-Monona soil associations and fields located outside the 
historic flood plain of the Missouri river), Kansas, Maryland, Michigan, Missouri (except the bootheel), 
Nebraska (fields south of route 30 or east of route 281), New Jersey, New York (fields south of interstate 
90), Ohio, Pennsylvania , Virginia, West Virginia and Wisconsin (fields south of interstate 90 between 
Lacrosse and Madison and fields south of interstate 94 between Madison and Milwaukee). 
 
Southern Region: The states of Alabama (except the “Black Belt” where soil pH must be less than 7.0), 
Arkansas, Florida, Georgia, Kentucky, Louisiana, Missouri (bootheel region only), Mississippi (except the 
“Black Belt” where soil pH must be less than 7.0), North Carolina, Oklahoma, South Carolina, Tennessee 
and Texas (fields east of route 183). 
 
Follow Recrop Interval 1 if the field is in the Central Region and: 
 
x A maximum of 1.125 oz/acre of Synchrony XP was applied for the use year (all pH soils). 
OR 
x A maximum of 0.75 oz/acre of Synchrony XP in sequence with 0.33 oz/acre of CLASSIC® was 
applied for the use year (all pH soils).
OR 
x A maximum of 0.75 oz/acre of Synchrony XP was applied in sequence with a maximum rate of 
0.75 oz/acre of CLASSIC®, or a maximum of two applications of Synchrony XP at a rate of 0.75 
oz/acre per application was applied (soils with pH less than 7.0).
 
Follow Recrop Interval 2 if the field is in the Southern Region with: 
 
x All pH soils except those with pH greater than 7.0 in the Black Belt region of Alabama and 
Mississippi 
AND 
x A maximum of 0.75 oz/acre of Synchrony XP was applied in sequence with 0.75 oz/acre of 
CLASSIC®. 
OR 
x A maximum of two applications of Synchrony XP at a rate of 0.75 oz/acre per application was 
applied.
OR 
x A single maximum application of 1.5 oz/acre of Synchrony XP was applied.
 
Follow Recrop Interval 3 if the field is in the Northern, Central or Southern Regions and either: 
 
x A maximum of 0.375 oz/acre Synchrony XP was applied during the use year (any soil pH).
OR 
x A maximum of 0.75 oz/acre Synchrony XP was applied during the use year (soil pH less than 
7.0).
 
Follow Recrop Interval 4 if: 
 
x The field is located in the Central Region and greater than 1.125 oz/acre was applied to soils with 
a pH less than 7.0.
OR 
x The field is located in the Southern Region and greater than 1.5 oz/acre was applied to soils with 
a pH less than 7.0.
OR 
x The field is located in the central or Southern Region and a sequential application of Synchrony 
XP or CLASSIC® was applied following 1.0 - 3.0 oz/acre of Synchrony XP applied preplant, PPI 
or pre on soils with pH less than 7.0

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 30 
 
 
 
 
Crop Rotational Intervals in Months 
Following the Use of Synchrony XP* 
 
Crop Interval 1 Interval 2 Interval 3 Interval 4 
Soybeans 0 0 0 0 
Cereal Grains, Pasture Grasses (such as Fescue 
and ryegrass) 
 
3 
 
3 
 
3 
 
4 
Dry Beans, Kidney Beans, Peas, Snap Beans 9 9 9 12 
Field corn** 9 8*** 9 10** 
Popcorn 9 9 9/15§ 10 
Sorghum 9 9 9/15§ 12 
Tobacco (transplant) 9 9 9/15§ 10 
Tomato (transplant) 9 9 9/15§ 10 
Peanuts 15 6 6 8 
Rice 15 9 †† 9 10 
Cotton 9 8 9 10 
Alfalfa 12 9 9 10 
Clover 12 9 9 12 
Cabbage 18 18 18 18 
Canola (rapeseed) 18 18 18 18 
Cucumber 18 18 9 18 
Flax 18 18 18 18 
Lentils 18 18 18 18 
Mustard 18 18 18 18 
Pumpkins 18 18 9/18§ 18 
Sunflower 18 18 9 18 
Sweet corn 18 18 9† 18 
Watermelon 18 18 9 18 
Carrots’ 30 30 30 30 
Onions’ 30 30 30 30 
Potatoes’ 30 30/8 ††† 30 30 
Sweet potatoes, Yams’ 30 10 30 30 
Sugar beets’ 30 30 30 30 
Any crop not listed’ 30 30 30 30 
*If Synchrony XP or the latter part of a sequential treatment containing chlorimuron ethyl (such as CLASSIC®) is applied after August 
1, extend rotational crop intervals 2 months for alfalfa, clover, corn (non-IR), cotton, popcorn, rice, sorghum, tobacco, and tomato. 
**The term “Field corn” is defined to include only that corn grown for grain or silage or for seed corn relative to the rotational crop 
guidelines section of this label. in the states of DE, KY, MD, MO bootheel, NJ, NC, SC, TN, VA and WV, field corn may be 
recropped after 9 months if the Synchrony XP rate does not exceed 2.5 oz/ac. 
***In the states of AL, FL, GA, LA, MS, and SC field corn maybe rotated in 7 months. 
† Rotational crop intervals are for processing Sweet corn varieties only. The rotational crop interval for other Sweet corn varieties is 
18 months. 
††For applications using 1.5 oz on soil with pH greater than 7.0, the rotation to rice is 18 months. 
††† States of Nc and VA in soils with organic matter greater than 1%. 
’ For rotation interval 4 only, carrots, onion, potato, sugarbeets, and any other crop not listed may be recropped after 18 mont hs in 
the states of AL, AR, DE, GA, KY, LA, MD, MS, MO bootheel, NJ, NC, SC, TN, VA, and WV. 
§ For the 0.375 oz/acre Synchrony XP rate, the rotation to popcorn, sorghum, tobacco (transplants), tomato (transplants) and 
pumpkins is 9 months. For the 0.75 oz/acre rate, use the longer rotations. 
 
The Importance of Soil pH 
 
Soil pH varies greatly, even within the same field, pH variations as much as 2 pH units are common.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 31 
 
 
 
Composite soil samples taken across an entire field, such as those samples taken for soil fertility 
recommendations, may not detect areas of high pH. Sub-sampling is recommended for areas likely to 
have pH values higher than the field average. The following is a non-inclusive list of potential high pH 
areas where subsampling is recommended. 
 
Where different soil types are evident within a field, sample soil types separately. 
 
Where conditions vary within a field, sample areas separately, such as: 
x areas bordered by limestone gravel roads,
x river bottoms subject to flooding,
x low areas in hardpan soils where evaporative ponds may occur,
x eroded hillsides,
x along drain tile lines, and
x areas where drainage ditch spoil has been spread.
 
Where lime has not been deeply incorporated, soil may exhibit significantly higher pH values in the upper 
3 inches of soil. Composite soil samples taken at a 6-8 inch depth may not reflect the elevated pH near 
the surface. in these cases, shallow sampling the upper 3 inches is advised. 
 
Determine soil pH by laboratory analysis using a 1:1 soil: water suspension. 
 
Sprayer Preparation and Cleanup 
 
It is important that spray equipment is clean and free of previous pesticide deposits before using 
Synchrony XP and then properly cleaned out following application. Clean all application equipment before 
applying Synchrony XP. 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 Synchrony XP, thoroughly clean all mixing and spray equipment to 
avoid subsequent crop injury. 
 
Note: 
x When cleaning spray equipment before applying Synchrony XP, read and follow label directions 
for proper rinsate disposal of the product previously sprayed.
x Steam cleaning of aerial spray tanks will help to dislodge any visible pesticide deposits.
x When spraying or mixing equipment will be used over an extended period to apply multiple loads 
of Synchrony XP, 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.


Cleanup Procedure 
 
1. Drain the tank and thoroughly hose down the interior surfaces. Flush the tank, hoses, and boom with 
clean water for a minimum of 5 min. 
2. Partially fill the tank with clean water and add one gallon of household ammonia* (containing 3% active) 
for every 100 gallons of water. Finish filling the tank with water, then flush the cleaning solution through 
the hoses, boom, and nozzles. Add more water to completely fill the tank and allow to 
agitate/recirculate for at least 15 min. Again, flush the hoses, boom, and nozzles with the cleaning 
solution, then drain the tank. 
3. Repeat Step 2. 
4. Remove the nozzles, screens, and end caps of sprayer booms and clean separately in a bucket 
containing the cleaning agent and water. 
5. Thoroughly rinse the tank with clean water for a minimum of 5 min, flushing the water through the hoses 
and boom. 
* Equivalent amounts of an alternate strength ammonia solution or a tank cleaner recommended in the company bulletin 
“Sulfonylurea herbicides, A guide to equipment cleanout,” may be used.

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 32 
 
 
 
“Poast Plus”, “Sharpen” and “Zidua” are registered trademarks of BASF 
“Cobra” and “Valor” are registered trademarks of Valent USA Corporation 
“Boundary”, “Flexstar”, “Reflex”, are trademarks or registered trademarks of Syngenta Group Company 
“Firstrate” and “Lorsban” are registered trademarks of Dow AgroSciences LLC 
“Roundup Ready” is a registered trademark of Monsanto Technology LLC 
“Ultra Blazer” is a registered trademark of United Phosphorous Inc. 
 “Liberty” is a registered trademark of Bayer CropScience AG 
 
 
 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 permitted by 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, 
subject to the inherent risks set forth below. To the extent permitted by 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. 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 permitted by law, all such risks associated with non-directed use shall be assumed by buyer 
and/or user. 
 
 Limitation of Remedies 
To the extent permitted by 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 permitted by 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 permitted by 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 
Agriscience or the seller is authorized to vary or exceed the terms of the Warranty Disclaimer or this 
Limitation of Remedies in any manner. 
 
For product information call: 1-800-258-3033

G7J / Synchrony XP / MSTR / Amendment / 04-28-22 Page 33 
 
 
 
Produced for 
Corteva Agriscience LLC 
9330 Zionsville Road 
Indianapolis, IN 46268 
 
™
®Trademarks of Corteva Agriscience and its affiliated companies 
 
EPA accepted __/__/__