U.S. ENVIRONMENTAL PROTECTION AGENCY

Office of Pesticide Programs

Registration Division (7505P)

1200 Pennsylvania Ave., N.W.

Washington, D.C. 20460

EPA Reg. Number:

100-1466

Date of Issuance:

04/24/2015

NOTICE OF PESTICIDE: 

X Registration

Reregistration

Term of Issuance: 

Conditional

(under FIFRA, as amended)

Name of Pesticide Product:

AcuronTM Herbicide

Name and Address of Registrant (include ZIP Code):

Syngenta Crop Protection, LLC

P.O. Box 18300

Greensboro, NC 27419

Note: Changes in labeling differing in substance from that accepted in connection with this registration must be submitted to and accepted by the 

Registration Division prior to use of the label in commerce. In any correspondence on this product always refer to the above EPA registration number.

On the basis of information furnished by the registrant, the above named pesticide is hereby registered 

under the Federal Insecticide, Fungicide and Rodenticide Act.

Registration is in no way to be construed as an endorsement or recommendation of this product by the 

Agency. In order to protect health and the environment, the Administrator, on his motion, may at any 

time suspend or cancel the registration of a pesticide in accordance with the Act. The acceptance of any 

name in connection with the registration of a product under this Act is not to be construed as giving the 

registrant a right to exclusive use of the name or to its use if it has been covered by others.

This product is conditionally registered in accordance with FIFRA section 3(c)(7)(C) provided that you:

1. Submit and/or cite all data required for registration/reregistration/registration review of your

product when the Agency requires all registrants of similar products to submit such data.

Signature of Approving Official:

Rachel Holloman, Branch Chief

Fungicide and Herbicide Branch, Registration Division (7505P)

Date:

04/24/2015

EPA Form 8570-6

Registration Notice Unconditional v.20141114
Page 2 of 4

EPA Reg. No. 100-1466

Decision No. 470872

2. Make the following label changes before you release the product for shipment:

x Revise the EPA Registration Number to read, “EPA Reg. No. 100-1466.”

3. You are required to submit to the Agency: acute and chronic studies of bicyclopyrone on honey

bee larval development and survival, and chronic studies of adult bees. The deadline for you to

submit these required data to the Agency is 4/21/18. Your failure to provide these data in a

timely or adequate manner may result in initiation of a cancellation action against your

registration.

4. A. Annual reports: Syngenta will provide an annual report to EPA no later than March 31 of

each year following Acuron's first full launch year (the first full launch year currently is

anticipated to be 2016 and, if so, the first report would be made in March of 2017). The report

will include data on the total application of specific herbicide products to corn grown in the U.S.

in the preceding year.

B. 2018 Interim Milestone: In the annual report on the 2018 growing season (provided in March

of 2019) Syngenta will demonstrate a 1.6 million pound reduction of atrazine applied per year on

base acres treated with the specific Syngenta products compared to the baseline (referred to as

"the interim milestone"). If this interim milestone is not reached, no later than April 15, 2019,

Syngenta will submit for EPA approval revisions to the label for Acuron which include a

reduction or prohibition of the use of additional atrazine in tank-mixing or sequential use (or

other measures agreed upon with EPA prior to that date) that would be consistent with achieving

the 2020 atrazine reduction milestone. Provided that EPA approves the label revisions by May

31, 2019, this revised label must be on all Acuron product (100-1466) that Syngenta releases for

shipment as of September 30, 2019. If Syngenta submits label revisions by April 15, 2019, but

EPA has not approved the label revisions by May 31, EPA and Syngenta will discuss and

establish a revised schedule for making the revisions.

C. 2020 Milestone: In the annual report on the 2020 growing season (provided in March of

2021), Syngenta will demonstrate an approximately 3.6 million pound reduction of atrazine. If

the 2018 interim milestone is reached but the 2020 milestone is not reached, no later than April

15, 2021, Syngenta will submit for EPA approval revisions to the label for Acuron which include

a reduction or prohibition of the use of additional atrazine in tank-mixing or sequential use (or

other measures agreed upon with EPA prior to that date) that would be consistent with achieving

the 2020 atrazine reduction milestone in the 2021 growing season. (Meeting the 2020 atrazine

reduction milestone in either 2020 or 2021 is referred to as "the milestone"). Provided that

Syngenta submits label revisions by April 15, 2021, and EPA approves the label revisions by

May 31, 2021, this revised label must be on all Acuron product (100-1466) that Syngenta

releases for shipment as of September 30, 2021. If Syngenta submits the label revisions by April

15, 2021, but EPA has not approved the label revisions by May 31, EPA and Syngenta will

discuss and establish a revised schedule for making the revisions.

5. A. Failure to Achieve Herbicide Use Reduction: If neither the 2018 nor the 2020 reduction

milestone is reached, Syngenta agrees that EPA may, at its sole discretion, issue an order
Page 3 of 4

EPA Reg. No. 100-1466

Decision No. 470872

cancelling the 100-1466 registration without a hearing (subject to the rights reserved in 

paragraph 5.B. below). If the 2018 milestone is reached, the 2020 milestone is not reached, label 

revisions are undertaken for the 2021 growing season as provided above, and the 2020 milestone 

is not reached in the 2021 growing season (as demonstrated by the annual report submitted in 

March 2022), then Syngenta agrees that EPA may, at its sole discretion, issue an order cancelling 

the 100-1466 registration without a hearing (subject to the rights reserved in paragraph 5.B.

below). Before issuing any such order based on either of those two possibilities, EPA will 

consider the actual use reduction achieved and any other factors that may have affected the use 

reductions that were outside of Syngenta's control. If EPA nonetheless decides to issue a 

cancellation order, it will notify Syngenta in writing of its intention to cancel the registration and 

will specify in such notification the basis for its conclusion that Syngenta has failed to meet the 

2020 milestone in the 2020 or 2021 growing season, whichever applies. If within ten (10)

business days of receipt of such notification Syngenta submits to the agency a request in writing 

to meet with the Director of the Office of Pesticide Programs ("Office Director") before a 

cancellation order is issued, the agency will not issue a cancellation order before providing 

Syngenta an opportunity to meet with the Office Director to discuss whether cancellation is 

appropriate. The decision of the Office Director thereafter shall be final. Syngenta agrees to 

issuance of a cancellation order pursuant to this paragraph provided that it would contain 

provisions allowing Syngenta to sell remaining 100-1466 stocks (produced, labeled, and released 

for shipment as of the effective date of cancellation); allowing persons other than Syngenta to 

sell and distribute existing stocks; and allowing use of such existing stocks in accordance with 

the label on the product until exhausted.

B. Syngenta agrees that it will not challenge (or provide financial or technical assistance to 

anyone challenging) in any administrative forum the issuance of any cancellation order that 

conforms to all the terms of paragraph 5.A. of this notice. Notwithstanding the foregoing 

sentence, nothing in this paragraph shall limit Syngenta's right to: 1) defend against an EPA 

cancellation proceeding brought outside the terms of this letter; 2) support or participate in any 

action (in any forum) that challenges any EPA policy or practice of general applicability that 

may affect the ultimate requirements set forth in EPA's registration approval letter for 100-1466,

including the support of or participation in the activities of any trade association or coalition that 

is involved in any such challenge; 3) defend any personal injury, toxic tort, or other such suit and

raise any defense in such suit; 4) submit applications to amend any requirement or milestone in 

this letter; or 5) enforce rights under FIFRA or EPA's implementing regulations other than rights 

waived in this letter.

6. A. Sustained Achievement: The atrazine reduction addressed in this notice will be sustained.

Syngenta will continue annual reporting until March 31, 2024, or until such time that the 2020

milestone has been documented in three consecutive annual reports, whichever is sooner.

B. Syngenta will also develop and submit for EPA approval a product stewardship program 

designed to achieve the milestone. The program will commence upon EPA approval, and will 

include at least the following elements:

• The ability to minimize the tank-mixing of additional herbicides with Acuron due to the high

level of control of difficult weeds provided by bicyclopyrone. For example, awareness of 
Page 4 of 4

EPA Reg. No. 100-1466

Decision No. 470872

reduced atrazine rates needed to achieve weed control with Acuron, as well as the excellent fit 

for Acuron in one-pass weed control programs in corn will be included.

• The key benefits of the diversity of multiple mode-of-action active ingredients for management

of resistant weeds.

• The importance of Integrated Pest Management (IPM) and soil stewardship practices (such as

low/no-till practices).

• Education and outreach on watershed stewardship and conservation practices, and the use of

Best Management Practices to reduce the offsite movement of

7. Submit one copy of the revised final printed label for the record before you release the product

for shipment.

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.

If you fail to satisfy these data requirements, EPA will consider appropriate regulatory action including, 

among other things, cancellation under FIFRA section 6(e). Your release for shipment of the product 

constitutes acceptance of these conditions. A stamped copy of the label is enclosed for your records.

Please also note that the record for this product currently contains the following CSFs:

c. Basic CSF dated 9-6-12

d. Alternate CSF #1 dated 9-6-12

e. Alternate CSF #2 dated 9-6-12

If you have any questions, please contact Erik Kraft by phone at 703-308-9358, or via email at 

kraft.erik@epa.gov.

Rachel Holloman, Branch Chief

Fungicide and Herbicide Branch, Registration Division (7505P)

Enclosure
Acuron Herbicide 

Page 1 

RESTRICTED USE PESTICIDE 

(GROUND AND SURFACE WATER CONCERNS) 

FOR RETAIL SALE TO AND USE ONLY BY CERTIFIED APPLICATORS OR PERSONS 

UNDER THEIR DIRECT SUPERVISION, AND ONLY FOR THOSE USES COVERED BY THE 

CERTIFIED APPLICATOR’S CERTIFICATION. 

THIS PRODUCT IS A RESTRICTED-USE HERBICIDE DUE TO GROUND AND SURFACE 

WATER CONCERNS. USERS MUST READ AND FOLLOW ALL PRECAUTIONARY 

STATEMENTS AND INSTRUCTIONS FOR USE IN ORDER TO MINIMIZE POTENTIAL FOR 

ATRAZINE TO REACH GROUND AND SURFACE WATER. 

Sale, use and distribution of this product in Nassau and Suffolk Counties in the 

State of New York is prohibited. 

GROUP 5 15 27 HERBICIDES

AcuronTM Herbicide 

A Herbicide for Control of Annual Grass and Broadleaf Weeds in Field Corn, Seed 

Corn, Silage Corn, Sweet Corn and Yellow Popcorn

Active Ingredients*: 

S-Metolachlor: (CAS No. 87392-12-9) ................................................................... 23.40% 

Atrazine**: (CAS No. 1912-24-9) .......................................................................... 10.93% 

Mesotrione: (CAS No. 104206-82-8) ....................................................................... 2.60% 

Bicyclopyrone: (CAS No. 352010-68-5) .................................................................. 0.65% 

Other Ingredients: 62.42% 

Total: 100.00% 

 *Active ingredients per gallon: Atrazine 1.0 pound, Bicyclopyrone 0.06 pounds, 

Mesotrione 0.24 pounds and S-metolachlor 2.14 pounds. 

**Atrazine with a maximum of 0.45% related triazines. 

KEEP OUT OF REACH OF CHILDREN.

CAUTION

See additional precautionary statements and directions for use on label. 

EPA Reg. No. 100-XXXX 

2.5 gallons 

Net Contents 

120 gallons 

Net Contents 

220 gallons 

Net Contents 

330 gallons 

Net Contents 

____ gallons[bulk] 

Net Contents 

04/24/2015

100-1466
Acuron Herbicide 

Page 2 

FIRST AID

If swallowed x Call a Poison Control Center or doctor immediately for treatment 

advice. 

x Have person sip a glass of water if able to swallow. 

x Do not induce vomiting unless told to do so by a poison control 

center or doctor. 

x Do not give anything to an unconscious person. 

If in eyes x Hold eye open and rinse slowly and gently with water for 15-20 

minutes.

x Remove contact lenses, if present, after the first 5 minutes, then 

continue rinsing eye. 

x Call a Poison Control Center or doctor for treatment advice. 

If on skin or 

clothing

x Take off contaminated clothing. 

x Rinse skin immediately with plenty of water for 15-20 minutes. 

x Call a Poison Control Center or doctor for treatment advice. 

If inhaled x Move person to fresh air. 

x If person is not breathing, call 911 or an ambulance, then give 

artificial respiration, preferably by mouth-to-mouth, if possible. 

x Call a Poison Control Center or doctor for further treatment advice. 

Have the product container or label with you when calling a poison control center or 

doctor, or going for treatment.

HOT LINE NUMBER 

For 24 Hour Medical Emergency Assistance (Human or Animal) 

or Chemical Emergency Assistance (Spill, Leak, Fire or Accident), 

Call

1-800-888-8372

PRECAUTIONARY STATEMENTS 

HAZARDS TO HUMANS AND DOMESTIC ANIMALS 

CAUTION

Harmful if swallowed. Causes moderate eye injury. Avoid contact with eyes, skin, or 

clothing. Prolonged or frequently repeated skin contact may cause allergic reactions in 

some individuals. 

Personal Protective Equipment (PPE) 

Some materials that are chemical-resistant to this product are listed below. 
Acuron Herbicide 

Page 3 

Mixers, Loaders, Applicators and other handlers must wear: 

x Coveralls over short-sleeved shirt and short pants 

x Chemical-resistant gloves – Category A (e.g. barrier laminate, butyl rubber, nitrile 

rubber, neoprene rubber, natural rubber, polyethylene, polyvinyl chloride (PVC) 

or Viton®) 

x Chemical-resistant footwear plus socks 

x Chemical-resistant apron when mixing/loading, cleaning up spills, or cleaning 

equipment, or otherwise exposed to the concentrate 

x Chemical-resistant headgear for overhead exposure. 

See engineering controls for additional requirements 

Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions 

for washables exist, use detergent and hot water. Keep and wash PPE separately from 

other laundry. Discard clothing and other absorbent materials that have been drenched 

or heavily contaminated with this product’s concentrate. Do not reuse them. 

Engineering Control Statements 

When applicators use closed systems or enclosed cabs in a manner that meets the 

requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides 

[40 CFR 170.240(d)(5)], the handler PPE requirements may be reduced or modified as 

specified in the WPS. 

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. 

Environmental Hazards 

Do not apply directly to water, to areas where surface water is present, or to intertidal 

areas below the mean high water mark. Do not contaminate water when disposing of 

equipment wash water or rinsate. This product contains atrazine, which has been 

shown to be toxic to aquatic invertebrates. Runoff and drift from treated areas may be 

hazardous to aquatic organisms in neighboring areas. Do not apply when weather 

conditions favor drift from treated areas. 
Acuron Herbicide 

Page 4 

Ground Water Advisory 

Acuron contains the active ingredients atrazine, S-metolachlor, and bicyclopyrone. 

Atrazine can travel (seep or leach) through soil and can enter ground water which may 

be used as drinking water. Atrazine has been found in ground water. Users are advised 

not to apply atrazine to sand and loamy sand soils where the water table (ground water) 

is close to the surface and where these soils are very permeable, i.e., well-drained. 

Your local agricultural agencies can provide further information on the type of soil in 

your area and the location of ground water. 

S-metolachlor has the potential to leach through soil into ground water under certain 

conditions as a result of agricultural use. Use of this product in areas where soils are 

permeable, particularly where the water table is shallow may result in ground water 

contamination.

Bicyclopyrone is known to leach through soil into ground water under certain conditions 

as a result of label use. This chemical may leach into ground water if used in areas 

where soils are permeable, particularly where the water table is shallow. 

Surface Water Advisory

This product has a 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 bicyclopyrone from 

runoff water and sediment. Runoff of this product will be reduced by avoiding 

applications when rainfall or irrigation is expected to occur within 48 hours. 

Mixing/Loading Instructions 

Care must be taken when using this product to prevent back-siphoning into wells, spills, 

or improper disposal of excess pesticide, spray mixtures, or rinsates. 

Check valves or antisiphoning devices must be used on mixing equipment. 

This product must not be mixed/loaded or used within 50 ft. of wells, including 

abandoned wells, drainage wells, and sink holes. Operations that involve mixing, 

loading, rinsing, or washing to this product into or from pesticide handling or application 

equipment or containers within 50 ft. of any well are prohibited, unless conducted on an 

impervious pad constructed to withstand the weight of the heaviest load that may be 

positioned on or moved across the pad. Such a pad shall be designed and maintained 

to contain any product spills or equipment leaks, container or equipment rinse or wash 

water, and rain water that may fall on the pad. Surface water shall not be allowed to 

either flow over or from the pad, which means the pad must be self-contained. The pad 
Acuron Herbicide 

Page 5 

shall be sloped to facilitate material removal. An unroofed pad shall be of sufficient 

capacity to contain, at a minimum, 110% of the capacity of the largest pesticide 

container or application equipment on the pad. A pad that is covered by a roof of 

sufficient size to completely exclude precipitation from contact with the pad shall have a 

minimum containment capacity of 100% of the capacity of the largest pesticide 

container or application equipment on the pad. Containment capacities as described 

above shall be maintained at all times. The above specified minimum containment 

capacities do not apply to vehicles when delivering pesticide shipments to the 

mixing/loading site. 

Additional State imposed requirements regarding well head setbacks and operational 

area containment must be observed. 

This product must not be mixed or loaded within 50 ft. of perennial or intermittent 

streams and rivers, natural or impounded lakes and reservoirs. This product may not 

be applied within 66 ft. of the points where field surface water runoff enters perennial or 

intermittent streams and rivers or within 200 ft. from the edge of natural or impounded 

lakes and reservoirs. If this product is applied to highly erodible land, the 66 ft. buffer or 

setback from runoff entry points must be planted to crop, or seeded with grass or other 

suitable crop. 

Tile-Outletted Terraced Fields Containing Standpipes 

One of the following restrictions must be used in applying atrazine to tile-outletted 

terraced fields containing standpipes: 

1. Do not apply this product within 66 ft. of standpipes in tile-outletted terraced 

fields.

2. Apply this product to the entire tile-outletted terraced field and immediately 

incorporate it to a depth of 2-3 inches in the entire field. 

3. Apply this product to the entire tile-outletted terraced field under a no-till practice 

only when a high crop residue management practice is practiced. High crop 

residue management is described as a crop management practice where little or 

no crop residue is removed from the field during and after crop harvest. 

Physical and Chemical Hazards

Do not use or store near heat or open flame.
Acuron Herbicide 

Page 6 

CONDITIONS OF SALE AND LIMITATION OF WARRANTY AND LIABILITY 

NOTICE: Read the entire Directions for Use and Conditions of Sale and Limitation of 

Warranty and Liability before buying or using this product. If the terms are not 

acceptable, return the product at once, unopened, and the purchase price will be 

refunded.

The Directions for Use of this product must be followed carefully. It is impossible to 

eliminate all risks inherently associated with the use of this product. Crop injury, 

ineffectiveness or other unintended consequences may result because of such factors 

as manner of use or application, weather or crop conditions, presence of other materials 

or other influencing factors in the use of the product, which are beyond the control of 

SYNGENTA CROP PROTECTION, LLC or Seller. To the extent permitted by 

applicable law, Buyer and User agree to hold SYNGENTA and Seller harmless for any 

claims relating to such factors. 

SYNGENTA warrants that this product conforms to the chemical description on the label 

and is reasonably fit for the purposes stated in the Directions for Use, subject to the 

inherent risks referred to above, when used in accordance with directions under normal 

use conditions. To the extent permitted by applicable law: (1) this warranty does not 

extend to the use of the product contrary to label instructions, or under conditions not 

reasonably foreseeable to or beyond the control of Seller or SYNGENTA, and, (2) Buyer 

and User assume the risk of any such use. To the extent permitted by applicable law, 

SYNGENTA MAKES NO WARRANTIES OF MERCHANTABILITY OR OF FITNESS 

FOR A PARTICULAR PURPOSE NOR ANY OTHER EXPRESS OR IMPLIED 

WARRANTY EXCEPT AS WARRANTED BY THIS LABEL. 

To the extent permitted by applicable law, in no event shall SYNGENTA or Seller be 

liable for any incidental, consequential or special damages resulting from the use or 

handling of this product. TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE

EXCLUSIVE REMEDY OF THE USER OR BUYER, AND THE EXCLUSIVE LIABILITY 

OF SYNGENTA AND SELLER FOR ANY AND ALL CLAIMS, LOSSES, INJURIES 

OR DAMAGES (INCLUDING CLAIMS BASED ON BREACH OF WARRANTY, 

CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) 

RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT, SHALL BE THE 

RETURN OF THE PURCHASE PRICE OF THE PRODUCT OR, AT THE ELECTION 

OF SYNGENTA OR SELLER, THE REPLACEMENT OF THE PRODUCT. 

SYNGENTA and Seller offer this product, and Buyer and User accept it, subject to the 

foregoing Conditions of Sale and Limitation of Warranty and Liability, which may not be 

modified except by written agreement signed by a duly authorized representative of 

SYNGENTA.
Acuron Herbicide 

Page 7 

DIRECTIONS FOR USE 

It is a violation of Federal law to use this product in a manner inconsistent with its 

labeling. 

ANY USE OF THIS PRODUCT IN AN AREA WHERE USE IS PROHIBITED IS A 

VIOLATION OF FEDERAL LAW. Before using this product, you must consult the 

Atrazine Watershed Information Center (AWIC) to determine whether the use of this 

product is prohibited in your watershed. AWIC can be accessed through www.atrazinewatershed.info or 1-866-365-3014. If use of this product is prohibited in your watershed, 

you may return this product to your point of purchase or contact Syngenta Crop 

Protection, LLC for a refund. 

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.

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 24 hours.

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 and 

water, wear:

x Coveralls over short-sleeved shirt and short pants 

x Chemical-resistant gloves – Category A (e.g. barrier laminate, butyl rubber, nitrile 

rubber, neoprene rubber, natural rubber, polyethylene, polyvinyl chloride (PVC) or 

Viton)

x Chemical resistant footwear plus socks 

x Chemical-resistant headgear for overhead exposure. 

FAILURE TO FOLLOW THE DIRECTIONS FOR USE AND PRECAUTIONS ON THIS 

LABEL MAY RESULT IN POOR WEED CONTROL, CROP INJURY, OR ILLEGAL 

RESIDUES.
Acuron Herbicide 

Page 8 

Sale, use and distribution of this product in Nassau and Suffolk Counties in the 

State of New York is prohibited. 

PRODUCT INFORMATION 

Acuron may be used preemergence and postemergence in the culture of field corn, 

seed corn, and silage corn. Acuron may also be used in the culture of sweet corn and 

yellow popcorn but the application must be made prior to crop emergence, (i.e., 

preemergence) or severe crop injury may occur.

Acuron is a combination of the herbicides: atrazine, bicyclopyrone, mesotrione and 

S-metolachlor plus the safener benoxacor. Acuron is recommended for management of 

the weed species listed in Tables 1 and 2. 

ATRAZINE, MESOTRIONE AND S-METOLACHLOR HERBICIDE RATE 

LIMITATIONS

Certain states may have established rate limitations within specific geographical 

areas for the use of atrazine. These more restrictive/protective requirements must be 

followed. Consult your state lead pesticide control agency for additional information. 

It is a violation of this label to deviate from state use regulations. 

x When tank mixing or sequentially applying atrazine or products containing atrazine 

with Acuron to corn, do not exceed an application rate of 2.0 lb active ingredient of 

atrazine per acre for any single application and the total pounds of atrazine applied 

(lb. a.i. per acre) must not exceed 2.5 lb active ingredient per acre per year. 

x Maximum broadcast application rates for atrazine in corn must be as follows: 

ஈ If no atrazine was applied prior to corn emergence, apply a maximum of 2.0 

lb. a.i./A broadcast. If a postemergence treatment is required following an 

earlier herbicide application, the total atrazine applied may not exceed 2.5 lbs. 

a.i./A per calendar year. 

ஈ Apply a maximum of 2.0 lb. a.i./A as a single preemergence application on 

soils that are not highly erodible or on highly erodible soils (as defined by the 

Natural Resource Conservation Service) if at least 30% of the soil is covered 

with plant residues. 

ஈ Apply a maximum of 1.6 lb. a.i./A as a single preemergence application on 

highly erodible (as defined by the Natural Resource Conservation Service) 

soils if <30% of the surface is covered with plant residues; or 2.0 lbs. a.i./A if 

only applied postemergence.

Note: For purposes of calculating total atrazine active ingredient applied, Acuron 

contains 1.0 lb. a.i. atrazine plus related per gallon.
Acuron Herbicide 

Page 9 

Do not exceed label dosage rates, nor combined maximum annual rates for 

mesotrione (no more than 0.24 lb of mesotrione active ingredient must be applied 

per acre of corn per year), and S-metolachlor (the maximum annual use rate per 

year is 3.71 lb ai/A for corn). Do not apply more than 0.045 lb ai/A of bicyclopyrone 

for corn. 

ACURON USE PRECAUTIONS 

x Applied according to directions and under normal growing conditions, Acuron will not 

harm the treated crop. During germination and early stages of growth, extended 

periods of unusually cold and wet or hot and dry weather, insect or plant disease 

attack, carryover pesticide residues, the use of certain soil applied systemic 

insecticides, improperly placed fertilizers or soil insecticides, may weaken crop 

seedlings. Acuron used under these conditions could result in crop injury. 

x Where reference is made to weeds partially controlled, partial control can either 

mean erratic control from good to poor or consistent control at a level below that 

generally considered acceptable for commercial weed control. 

x Dry weather following preemergence application of Acuron or a Acuron tank mixture 

may reduce effectiveness. If possible, cultivate if weeds develop. 

x Applying Acuron postemergence to corn that has received an at-plant application of 

Counter® insecticide can result in severe corn injury. Temporary corn injury may 

occur if Acuron is applied to emerged corn where organophosphate insecticides 

other than Counter were applied at planting. 

x Postemergence (emerged corn) applications of any organophosphate or carbamate 

insecticide within 7 days before or 7 days after a Acuron application may result in 

severe corn injury.

ACURON USE RESTRICTIONS 

x Grazing Restriction: To avoid possible illegal residues, do not graze or feed forage 

from treated areas for 45 days following application.

x Pre-Harvest Interval (PHI): Corn (for grain, seed, or silage) may be treated up to 12 

inches tall. Do not harvest forage within 60 days after application. 

x Do not apply more than 3.0 qt of Acuron per acre per growing year. 

x Do not use aerial application to apply Acuron. 

x Do not apply Acuron to sweet corn or yellow popcorn after the crop has emerged or 

severe crop injury may occur. 
Acuron Herbicide 

Page 10 

x Do not use Acuron on any crop other than corn (for grain, seed, or silage), sweet 

corn (preemergence applications only) or yellow popcorn (preemergence 

applications only). 

x Do not use Acuron in the culture of white popcorn or ornamental (Indian) corn or 

injury may occur. 

x Do not contaminate irrigation water used for crops or water used for domestic 

purposes.

x Thoroughly clean sprayer or other application device before using. Dispose of 

cleaning solution in a responsible manner. Do not use a sprayer or applicator 

contaminated with other materials, or crop damage or sprayer clogging of the 

application device may occur. 

x Read and observe all precautions and limitations on this label and the label of each 

product used in tank mixtures. 

x Do not make postemergence (emerged corn) applications of Acuron in a tank mix 

with any organophosphate or carbamate insecticide, or severe corn injury may 

occur.

x Do not apply under conditions which favor runoff or wind erosion of soil containing 

this product to non-target areas. To prevent off-site movement due to runoff or wind 

erosion:

o Avoid treating powdery dry or light sand soils when conditions are favorable for 

wind erosion. Under these conditions, the soil surface should first be settled by 

rainfall or irrigation. 

o Do not apply to impervious substrates, such as paved or highly compacted 

surfaces.

o Do not use tail water from the first flood or furrow irrigation of treated fields to 

treat nontarget crops, unless at least 1⁄2 inch of rainfall has occurred between 

application and the first irrigation. 

RESISTANCE MANAGEMENT 

Acuron is a combination of atrazine, bicyclopyrone, mesotrione and S-metolachlor

(Group 5 (atrazine), 15 (S-metolachlor), and 27 (bicyclopyrone and mesotrione) 

Herbicides).

Naturally occurring biotypes of certain weed species with resistance to triazines, ALS, 

PPO, Glycine (glyphosate) and HPPD herbicides are known to exist. If biotypes of 

weeds resistant to triazines, ALS, PPO and glycine inhibitors are present in the field, 

this herbicide should control them if they are listed in Tables 1 and 2. 
Acuron Herbicide 

Page 11 

To reduce the risk of weeds developing resistance to HPPD inhibitors, implement a 

program including both preemergence and/or postemergence herbicides that provide 

effective control of all weeds using multiple modes of action. This includes scouting 

fields before application to ensure the herbicide will be appropriate for the weeds 

present. Scout fields and eliminate weed escapes. If suspected weed resistance is 

observed against a particular weed species contact your Syngenta or retailer 

representative or call Syngenta Customer Service (1-800-334-9481). Lack of weed 

control is not necessarily an indicator of weed resistance. 

Consider weed resistance management strategies that include two or more modes of 

action where a minimum of two modes of action are effective at controlling the target 

weed when either are applied alone. 

Read and follow all label directions. 

Acuron Herbicide contains four herbicide active ingredients and three modes of action 

and can be an effective component of a weed resistance management strategy. 

INTEGRATED PEST (WEED) MANAGEMENT 

Acuron may be integrated into an overall pest management strategy. Practices known 

to reduce weed development (tillage, crop competition) and herbicide use (weed 

scouting, proper application timing, banding, and rotations) should be followed wherever 

possible. Consult local agricultural and weed authorities for additional Integrated Pest 

Management strategies established for your area.

SOIL ORGANIC MATTER 

The organic matter of the soil on which the application is to be made must be known or 

determined prior to application. The use rate of Acuron is based on percent soil organic 

matter.

REDUCED AND NO-TILL SYSTEMS 

Acuron may be used in reduced and no-till systems. The highest levels of control will 

be obtained when applications are made as close to planting as possible. It is 

recommended that a burndown herbicide such as Gramoxone®, Touchdown brands, 

Roundup® brands, or 2,4-D be tank mixed with Acuron in reduced or no-till systems if 

weeds are present at application and the corn has not yet emerged. 

WEEDS CONTROLLED

Acuron applied as directed in this label will control or suppress the weeds listed in 

Tables 1 and 2. Additional weeds may be controlled with tank mixes. See the Acuron

Tank Mix Combinations section for recommended tank mix combinations. Always 
Acuron Herbicide 

Page 12 

consult the tank mix product labels for specific rates and use directions. 

Table 1. Weeds Controlled or Partially Controlled by Preemergence Applications 

of Acuron 

Common Name Scientific Name Weed Rating1

Broadleaf Weeds 

Amaranth, Palmer Amaranthus palmeri C

Amaranth, Powell Amaranthus powellii C

Bedstraw, catchweed Galium aparine PC

Beggarweed, Florida Desmodium tortuosum C

Buckwheat, wild Polygonum convolvulus C

Buffalobur Solanum rostratum C

Carpetweed Mollugo verticillata C

Chickweed, common Stellaria media C

Cocklebur, common Xanthium strumarium C2

Deadnettle, purple Lamium purpureum C

Devil’s-claw Proboscidea louisianica C

Galinsoga Galinsoga parviflora C

Henbit Lamium amplexicaule C

Horseweed (marestail) Conyza Canadensis C

Jimsonweed Datura stramonium C

Kochia Kochia scoparia C

Lambsquarters, common Chenopodium album C

Mallow, Venice Hibiscus trionum C

Morningglory, ivyleaf/entireleaf Ipomoea hederacea C2

Mustard, wild Brassica kaber C

Nightshade, black Solanum nigrum C

Nightshade, eastern black Solanum ptycanthum C

Nightshade, hairy Solanum sarrachoides C

Pigweed, redroot Amaranthus retroflexus C

Pigweed, smooth Amaranthus hybridus C

Puncturevine Tribulus terrestris C

Purslane, common Portulaca oleracea C

Pusley, Florida Richardia scabra C
Acuron Herbicide 

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Common Name Scientific Name Weed Rating1

Radish, wild Raphanus raphanistrum C

Ragweed, common Ambrosia artemisiifolia C

Ragweed, giant Ambrosia trifida C

Sesbania, hemp Sesbania exaltata C

Shepherd’s-purse Capsella bursa-pastoris C

Sicklepod Cassia obtusifolia C

Sida, prickly Sida spinosa PC

Smartweed, ladysthumb Polygonum persicaria C

Smartweed, Pennsylvania Polygonum pensylvanicum C

Sunflower, common Helianthus annus PC

Thistle, Russian Salsola tragus C

Velvetleaf Abutilon theophrasti C

Waterhemp, common Amaranthus rudis C

Waterhemp, tall Amaranthus tuberculatus C

Grass Weeds 

Barnyardgrass Echinochloa crus-galli C

Crabgrass Digitaria spp. C

Crowfootgrass Dactyloctenium aegyptium C

Cupgrass, prairie Eriochloa contracta C

Cupgrass, Southwestern Eriochloa gracilis C

Cupgrass, woolly Eriochloa villosa PC

Foxtail, giant Setaria faberi C

Foxtail, green Setaria viridis C

Foxtail, robust (purple, white) Setaria spp. C 

Foxtail, yellow Setaria pumila C

Goosegrass Eleusine indica C

Johnsongrass, seedling Sorghum halepense PC

Millet, foxtail Setaria italica C

Millet, wild proso Panicum miliaceum PC

Panicum, Texas Panicum texanum PC

Rice, red Oryza sativa C

Sandbur, field Cenchrus incertus PC

Shattercane Sorghum bicolor PC
Acuron Herbicide 

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Common Name Scientific Name Weed Rating1

Signalgrass, broadleaf Brachiaria platyphylla C2

Signalgrass, narrowleaf Brachiaria piligera C

Sprangletop, red Leptochloa filiformis C

Starbur, bristly Acanthospermum hispidum C

Witchgrass Panicum capillare C

Sedges

Nutsedge, Yellow Cyperus esculentus C

1

 C = Control, PC = Partial Control 

2

 May require a tank-mix partner (e.g. atrazine) for control of heavy populations 

Thoroughly till soil or make an application of a burndown herbicide to control emerging 

weeds. Plant crop immediately after tillage. 

If a significant rainfall does not occur within 7 days after application, weed control may 

be decreased. If irrigation is available, apply 1⁄2 to 1 inch of water. If irrigation is not 

available, a uniform shallow cultivation is recommended as soon as weeds emerge. 
Acuron Herbicide 

Page 15 

Table 2. Weeds Controlled or Partially Controlled by Early Postemergence 

Applications of Acuron 

Common Name Scientific Name Weed Rating1

Broadleaf Weeds 

Amaranth, Palmer Amaranthus palmeri C

Amaranth, Powell Amaranthus powellii C

Bedstraw, catchweed Galium aparine PC

Beggarweed, Florida Desmodium tortuosum C

Buckwheat, wild Polygonum convolvulus C

Buffalobur Solanum rostratum C

Carpetweed Mollugo verticillata C

Chickweed, common Stellaria media C

Cocklebur, common Xanthium strumarium C

Dandelion Taraxacum officinale PC

Deadnettle, purple Lamium purpureum C

Devil’s-claw Proboscidea louisianica C

Galinsoga Galinsoga parviflora C

Hemp Cannabis sativa C

Henbit Lamium amplexicaule C

Horsenettle Solanum carolinense C

Horseweed (marestail) Conyza canadensis C

Jimsonweed Datura stramonium C

Kochia Kochia scoparia C

Lambsquarters, common Chenopodium album C

Mallow, Venice Hibiscus trionum C

Marestail Hippuris vulgaris C

Morningglory, ivyleaf/entireleaf Ipomoea hederacea C

Mustard, wild Brassica kaber C

Nightshade, black Solanum nigrum C

Nightshade, eastern black Solanum ptycanthum C

Nightshade, hairy Solanum sarachoides C

Pigweed, redroot Amaranthus retroflexus C

Pigweed, smooth Amaranthus hybridus C

Pokeweed Phytolacca americana C
Acuron Herbicide 

Page 16 

Common Name Scientific Name Weed Rating1

Potatoes, volunteer Solanum spp. C 

Purslane, common Portulaca oleracea C

Pusley, Florida Richardia scabra C

Radish, wild Raphanus raphanistrum C

Ragweed, common Ambrosia artemisiifolia C

Ragweed, giant Ambrosia trifida C

Sesbania, hemp Sesbania exaltata C

Shepherd’s-purse Capsella bursa-pastoris C

Sida, prickly Sida spinosa C

Smartweed, ladysthumb Polygonum persicaria C

Smartweed, Pennsylvania Polygonum pensylvanicum C

Sunflower, common Helianthus annus C

Thistle, Canada Cirsium arvense C

Velvetleaf Abutilon theophrasti C

Waterhemp, common Amaranthus rudis C

Waterhemp, tall Amaranthus tuberculatus C

Grass Weeds 

Barnyardgrass Echinochloa crus-galli PC2

Crabgrass, large Digitaria sanguinalis C2

Foxtail, giant Setaria faberii PC2

Signalgrass, broadleaf Brachiaria platyphylla C2

1

 C = Control, PC = Partial Control 

2

Apply before the weed exceeds 2 inches in height 

A tank mix of AAtrex with Acuron can provide additional control of certain emerged 

annual grass weeds. Refer to the AAtrex label for weeds controlled and other 

restrictions.
Acuron Herbicide 

Page 17 

ROTATIONAL CROPS 

When Acuron is applied as directed on this label, follow the crop rotation intervals in 

Table 3. If Acuron is tank mixed with other products, follow the most restrictive 

product’s crop rotation interval. 

Do not rotate to food or feed crops other than those listed on this label. 

Table 3. Time Interval Between Acuron Application and Replanting or Planting of 

Rotational Crop 

Crop Replant/Rotational Interval 

Field corn 

Seed corn 

Silage corn 

Sweet corn 

Yellow popcorn 

Anytime1

Small grain cereals including wheat, barley and rye 4 Months 

Cotton

Dry beans2

Peanuts 

Potato

Rice 

Soybeans3,4

Sorghum (all types) 

10 Months5,6

All other rotational crops 18 Months 

1

 Do not reapply Acuron.

2 This rotational interval applies only to areas west of US highway 83 in the states of Colorado 

and Nebraska: If Acuron was applied to ground that was under center pivot irrigation and the 

soil pH is greater than 6.5, dry beans can be planted 10 months following application. 

3

 Injury may occur to soybeans planted the year following application on soils having a 

calcareous surface layer if additional atrazine or atrazine-containing products are used.

4 In eastern parts of the Dakotas, KS, western MN, and NE, do not rotate to soybeans for 18 

months following application if the combined atrazine rate applied was more than 2.0 lbs. a.i./A, 

or equivalent band application rate, or soybean injury may occur. 

5

 If applied after June 1, rotating to crops other than corn (all types) may result in crop injury. 

6 In the High Plains and Intermountain areas of the West, where rainfall is sparse and erratic or 

where irrigation is required, use only when corn (all types) or sorghum is to follow corn, or a 

crop of untreated corn (all types) or sorghum is to precede other rotational crops. 
Acuron Herbicide 

Page 18 

APPLICATION PROCEDURES 

ADJUVANTS

When an adjuvant is to be used with this product, the use of an adjuvant that meets the 

standards of the Chemical Producers and Distributors Association (CPDA) adjuvant 

certification program is recommended. 

Where Acuron is applied after the corn has emerged, a non-ionic surfactant (NIS) at 

0.25% v/v (1 qt./100 gals.) may be used. The use of crop oil concentrate (COC) may 

result in temporary crop injury. If used, add COC at a rate not to exceed 1% v/v (1 

gal./100 gals.) or not more than the equivalent of 1 qt./A. Do not use nitrogen based 

adjuvants (AMS or UAN) or methylated seed oil (MSO) with Acuron when applied alone 

to emerged corn, or when Acuron is applied as a postemergence tank mixture with 

other products, unless directed for a specific tank mix on this label or as part of a 

supplemental Acuron label. Any of these adjuvants may be used at a preemergence or 

preplant timing, i.e. where the corn crop has not yet emerged to increase burndown 

activity on existing weeds. Do not apply Acuron to emerged sweet corn or yellow 

popcorn or severe crop injury may occur. 

For Acuron tank mixtures with Ignite® Herbicide applied to emerged field corn 

(LibertyLink® hybrids only), AMS may be added as directed on the Ignite label. 

However, AMS should be the only adjuvant added to this tank mixture, or severe crop 

injury may occur. 

Sprinkler Irrigation: Do not apply Acuron by sprinkler irrigation. Use a sprinkler 

system only to incorporate Acuron after application. After Acuron has been applied, a 

sprinkler irrigation system set to deliver 1⁄2-1 inch of water may be used to incorporate 

the product. Using more than 1 inch of water could result in reduced performance. On 

sandy soil low in organic matter, use no more than 1⁄2 inch of water. Do not use flood 

irrigation to apply or incorporate Acuron. 

CULTIVATION

Should weeds develop; a shallow cultivation or rotary hoeing will generally result in 

improved weed control. If Acuron was incorporated, cultivate less than half the depth of 

incorporation.

If cultivation is necessary due to soil crusting, compaction, or escaped weeds, adjust 

equipment to run shallow and minimize soil movement. This will decrease the 

possibility of diluting or moving the herbicide from the weed control zone. 
Acuron Herbicide 

Page 19 

SPRAY EQUIPMENT 

Ground Application 

Spray nozzles should be uniformly spaced, the same size and type, and should provide 

accurate and uniform application. Use spray nozzles that provide medium to coarse 

droplet size to avoid drift yet provide good coverage. Ensure that all in-line strainer and 

nozzle screens in the sprayer are 50-mesh or coarser. Use a pump that can maintain 

the manufacturer’s recommended pressure at the nozzles and provide proper agitation 

within the tank to keep the product dispersed. Lower pressures may be used with 

extended range or drift reduction nozzles as long as adequate coverage is maintained.

Always ensure that agitation is maintained until spraying is completed, even if stopped 

for brief periods of time. If the agitation is stopped for more than 5 minutes, re-suspend 

the spray solution by running on full agitation prior to spraying.

Preemergence: Apply in a spray volume of 10-80 gals./A. 

Early Postemergence: Good weed coverage is essential for optimum weed control. 

Boom height for broadcast over-the-top applications should be based on the height of 

the crop – at least 15 inches above the crop canopy, but only high enough to give 

uniform coverage. Apply in a spray volume of 10-30 gals./A. When weed foliage is 

dense, use a minimum spray volume of 20 gals/A. Flat fan nozzles of 80q or 110q are 

recommended for optimum postemergence coverage. Do not use floodjet nozzles or 

controlled droplet application equipment for postemergence applications. Nozzles may 

be angled forward 45q to enhance penetration of the crop and provide better coverage.

Aerial Prohibition 

Do not apply by air. 

Spray Drift 

Do not apply when weather conditions may cause drift to nontarget areas. Drift may 

result in injury to adjacent crops and vegetation. To avoid spray drift, DO NOT apply 

when the wind speed is greater than 10 mph or during periods of temperature 

inversions. 

AVOIDING SPRAY DRIFT AT THE APPLICATION SITE IS THE RESPONSIBILITY OF 

THE APPLICATOR. 

The interaction of equipment and weather related factors determine the potential for 

spray drift. The applicator is responsible for considering these factors when making a 

decision.
Acuron Herbicide 

Page 20 

Information on Droplet Size 

The most effective way to reduce spray drift potential is to apply large droplets. Use 

only nozzles producing medium to ultra coarse droplets. Do not use nozzles producing 

fine droplets. 

Controlling Droplet Size 

x Volume - Use high flow rate nozzles to apply the highest practical spray volume. 

Nozzles with higher rated flows produce larger droplets. 

x Pressure - Do not exceed the nozzle manufacturer’s recommended pressures. 

For many nozzle types, lower pressure produces larger droplets. When higher flow 

rates are needed, use higher rate nozzles instead of increasing pressure. 

x Number of Nozzles - Use the minimum number of nozzles that provide uniform 

coverage.

Application Height 

Applications must be made at the lowest height above the target area that still provides 

uniform coverage of the target. Making applications at the lowest yet effective height 

reduces exposure of droplets to wind.

Wind

Drift potential is lowest when wind speeds are 10 mph or less. However, many factors, 

including droplet size, pressure, and equipment type determine drift potential at any 

given wind speed. Note: Local terrain can influence wind patterns.

Leave a 25-foot buffer downwind of the application to avoid drift to non-target areas. 

This buffer may be untreated corn rows or field border species maintained for this 

purpose.

Temperature Inversions 

Applications must not occur during a temperature inversion because drift potential is 

high. Temperature inversions restrict vertical air mixing, which causes small suspended 

droplets to remain in a concentrated cloud. This cloud can move in unpredictable 

directions due to the light variable winds common during inversions. Temperature 

inversions are characterized by increasing temperatures with altitude and are common 

on nights with limited cloud cover and light to no wind. They begin to form as the sun 

sets and often continue into the morning. Their presence can be indicated by ground 

fog; however, if fog is not present, inversions can also be identified by the movement of 

smoke from a ground source or an aircraft smoke generator. Smoke that layers and 

moves laterally in a concentrated cloud (under low wind conditions) indicates an 
Acuron Herbicide 

Page 21 

inversion, while smoke that moves upward and rapidly dissipates, indicates good 

vertical air mixing. 

Non-Target Areas 

Do not apply this pesticide when the product may drift to non-target areas (i.e. 

residential areas, bodies of water, known habitat for threatened or endangered species, 

non-target crops). 

Cleaning Equipment After Application 

Special attention must be given to cleaning equipment before spraying a crop other than 

corn. Mix only as much spray solution as needed. 

1. Flush tank, hoses, boom, and nozzles with clean water. 

2. Prepare a cleaning solution of 1 gal. of household ammonia per 25 gals. of water. 

Many commercial spray tank cleaners may be used. 

3. Use a pressure washer to clean the inside of the spray tank with this solution. 

Take care to wash all parts of the tank, including the inside top surface. If a 

pressure washer is not available, completely fill the sprayer with the cleaning 

solution to ensure contact of the cleaning solution with all internal surfaces of the 

tank and plumbing. Start agitation in the sprayer and thoroughly recirculate the 

cleaning solution for at least 15 minutes. All visible deposits must be removed 

from the spraying system. 

4. Flush hoses, spray lines, and nozzles for at least 1 minute with the cleaning 

solution. 

5. Dispose of rinsate from steps 1-3 in an appropriate manner. 

6. Repeat steps 2-5. 

7. Remove nozzles, screens, and strainers and clean separately in the ammonia 

solution after completing the above procedures. 

8. Rinse the complete spraying system with clean water. 

MIXING PROCEDURES 

CARRIER

Preemergence Applications: Either clean water or liquid fertilizers, excluding 

suspension fertilizers, may be used as carriers for preemergence applications. If fluid 

fertilizers are used, a compatibility test must be done. See Compatibility Test section 

for compatibility testing. Even if Acuron is physically compatible with a fluid fertilizer, 

constant agitation is necessary to maintain a uniform mixture during application. 
Acuron Herbicide 

Page 22 

Postemergence Applications: Use only clean water as the carrier when applying 

Acuron after corn emergence. Do not apply Acuron to emerged sweet corn or yellow 

popcorn.

ADDING ACURON TO THE SPRAY TANK 

The spray tank must be clean, thoroughly rinsed and decontaminated before adding 

either Acuron alone or with tank mix partners. If water is used as the carrier, use clean 

water.

Acuron Applied Alone: When Acuron is used alone, add the recommended amount of 

Acuron to the spray tank when the tank is half full of the carrier, then add the rest of the 

water or fluid fertilizer. Provide sufficient agitation during mixing and application to 

maintain a uniform mixture. 

Acuron Applied in Tank Mixtures: Refer to the sections on this label for 

recommended tank mixes. Always refer to labels of the tank mix partners for mixing 

directions and precautions. Do not exceed label dosage rates, nor combined maximum 

seasonal doses for atrazine, bicyclopyrone, mesotrione, or S-metolachlor. This product 

cannot be mixed with any product bearing a label prohibition against such mixing. If a 

tank mixture is used, a compatibility test must be done. See Compatibility Test section 

for details on the procedure for such a test. 

If the tank mix partner is compatible, fill the tank half full of the carrier. Start and 

continue agitation throughout mixing and spraying. All return lines to the spray tank 

must discharge below the liquid level. Prepare the components and add in the following 

order:

1. If a wettable powder or dry flowable formulation is used, make a slurry with water 

and add it slowly through the screen into the tank. Agitate during the procedure. 

2. If a flowable formulation is used, add slowly through screen into the tank. Mixing 

and compatibility may be improved when a dry flowable is diluted with water 

before adding to the tank. 

3. Add Acuron. 

4. Add any other tank mix products next with emulsifiable concentrates added last. 

5. Add an adjuvant last, if needed. 

6. Complete filling the sprayer tank and continue agitation. Apply as soon as 

possible after spray mixture is prepared. Do not leave mixture in spray tank 

overnight without agitation or unattended. 

TANK MIX COMPATIBILITY TEST 

A compatibility test is recommended before tank mixing to ensure compatibility of 

Acuron with other pesticides. The following test assumes a spray volume of 25 gals/A. 

For other spray volumes, make appropriate changes in the ingredients. 
Acuron Herbicide 

Page 23 

Note: Nitrogen solutions or complete liquid fertilizers, excluding suspension fertilizers, 

may replace all or part of the water in the spray. Because liquid fertilizers vary, even 

within the same analysis, always check compatibility with pesticide(s) before use.

Incompatibility of tank mixtures is more common with mixtures of fertilizer and 

pesticides.

Test Procedure 

1. Add 1.0 pt. of carrier (fertilizer or water) to each of two 1 qt. jars with tight lids. 

Note: Use the same source of water that will be used for the tank mix and 

conduct the test at the temperature the tank mix will be applied. 

2. To one of the jars, add 1/4 tsp. or 1.2 milliliters of a compatibility agent approved 

for this use, such as Compex or Unite (1/4 tsp. is equivalent to 2.0 pts./100 gals. 

spray). Shake or stir gently to mix. 

3. To both jars, add the appropriate amount of pesticide(s) in their relative 

proportions based on recommended label rates. If more than one pesticide is 

used, add them separately with dry pesticides first, flowables next, and 

emulsifiable concentrates last. After each addition, shake or stir gently to 

thoroughly mix. 

4. After adding all ingredients, put lids on and tighten, and invert each jar ten times 

to mix. Let the mixtures stand 15-30 minutes and then look for separation, large 

flakes, precipitates, gels, heavy oily film on the jar, or other signs of 

incompatibility. Determine if the compatibility agent is needed in the spray 

mixture by comparing the two jars. If either mixture separates, but can be 

remixed readily, the mixture can be sprayed as long as good agitation is used. If 

the mixtures are incompatible, test the following methods of improving 

compatibility: (a) slurry the dry pesticide(s) in water before addition, or (b) add 

1/2 the compatibility agent to the fertilizer or water and the other 1/2 to the 

emulsifiable concentrate or flowable pesticide before addition to the mixture. If 

incompatibility is still observed, do not use the mixture. 

5. After compatibility testing is complete, dispose of any pesticide wastes in 

accordance with the Storage and Disposal section in this label. 

CROP USE DIRECTIONS 

Acuron is to be used for preemergence use for control of most annual grass and 

broadleaf weeds in field corn, seed corn, silage corn, sweet corn and yellow popcorn. 

Acuron may also be applied early postemergence for the control of broadleaf weeds in 

field corn, seed corn and silage corn. Do not apply Acuron to emerged sweet corn or 

yellow popcorn or severe crop injury will occur. 

See Table 1 and 2 for a list of weeds controlled.

Acuron Use Rate: The soil organic matter content of the field on which Acuron is to be 

applied must be known. On soils with greater than 10% organic matter, Acuron activity 

may be affected resulting in reduced or poor weed control. 
Acuron Herbicide 

Page 24 

Soil Organic Matter Content Application rate1

<3% 2.5 qt/A 

>3% 3.0 qt/A 

1 Do not exceed 3.0 qt/A of Acuron per year.

ACURON APPLIED ALONE 

Early Preplant: Acuron may be applied up to 28 days prior to planting. 

Preemergence Surface: Acuron may be applied to the soil surface as a broadcast or 

banded application.

Early Postemergence: Acuron may be applied after corn (for grain, seed, or silage) 

emergence. See the “Adjuvants” section of this label for specific recommendations.

Do not apply early postemergence to corn in liquid fertilizer or severe crop injury may 

occur. Apply this treatment to small broadleaf weeds (less than 3 inches tall). 

Occasional corn leaf burn may result, but this will not affect later growth or corn yield. 

Do not apply Acuron to emerged sweet corn or yellow popcorn or severe crop injury 

may occur. Postemergence applications to corn must be made before crop reaches 12 

inches in height. 

This product will not provide consistent control of emerged grass weeds. For control of 

emerged grass weeds a grass herbicide tank mix may be required (see tank mix section 

of this label). Tank mixes of AAtrex can improve control of emerged annual grass and 

broadleaf weeds. Refer to the AAtrex label for weeds controlled and use restrictions. 

If Bicep II Magnum®, Bicep Lite II Magnum®, AAtrex (atrazine), Dual Magnum®, or 

Dual II Magnum® alone or in tank mixtures have been applied early preplant, preplant 

surface, preplant incorporated, or preemergence, limit the Acuron early post application 

to not exceed a total of 2.5 lbs. of active ingredient of atrazine or 3.75 lbs. of Smetolachlor active per acre, or illegal residues may result. 

Split Application: Acuron may be applied as a split application in corn (for grain, seed, 

or silage). For a split application program, apply 1⁄2 to Ҁ of the labeled rate of Acuron 

prior to crop emergence followed by a second Acuron application at ѿ to 1⁄2 of the 

labeled rate as a post application after corn emergence. The total amount of Acuron 

applied in the split application program cannot exceed 2.5 qt/A in soils with <3% OM 

and cannot exceed 3.0 qt/A in soils with >3% OM. Refer to the Early Postemergence

section above for instructions on post emergence applications. 
Acuron Herbicide 

Page 25 

ACURON TANK MIX COMBINATIONS 

Use of Spray Adjuvants with Tank Mixtures

When Acuron is used as a preemergence herbicide, and before weeds have emerged, 

spray adjuvants have little or no influence on performance. However, in burndown 

situations where the weeds have emerged and the corn has not, an adjuvant may be 

used with Acuron applied alone or when applied in tank mixture with a burndown 

herbicide as allowed on the individual product labels. Use only those adjuvants 

approved for agricultural crop use. See the “Adjuvants” section under “Application

Procedures” for further instructions. 

Burndown Combinations for Reduced Tillage Situations 

In reduced or no-till corn and before the crop has emerged, Acuron tank mixes with 

Gramoxone brands or Touchdown brands (or other glyphosate products such as 

Roundup brands) will burndown emerged weeds. For best results, tank mixes of 

Acuron plus Gramoxone should be applied to emerged weeds that are 1-6 inches in 

height. Consult the Gramoxone, Touchdown brand, or glyphosate product label for 

further information on weeds controlled and application timings. 

Preemergence Tank Mixtures Applied Before Corn Emergence 

The tank mix partners listed in Table 4 may be used in either conventional, reduced, or 

no-till systems and be applied by the same methods and at the same timings as Acuron 

unless otherwise specified in the tank mix product label. Follow all tank mix product 

labels for use rates and restrictions. Perform a compatibility test prior to spraying the 

tank mix application. Tank mixtures with 2,4-D are allowed, but should only be done 

with extreme care with regard to ensuring compatibility before mixing a load. 2,4-D 

products, and even batches, vary greatly with regard to compatibility and should be 

checked each time a water or carrier source, water or carrier temperature, product 

source, or tank mixture recipe is changed.
Acuron Herbicide 

Page 26 

Table 4: Tank Mixtures for Preemergence Applications with Acuron 

Tank Mix Rate (Max) Objective

AAtrex or other solo Atrazine 

products

0.5-1.25 lbs. a.i./A Improved broadleaf and grass 

weed control 

Princep® 0.5-1.3 lbs. a.i./A Improved broadleaf and grass 

weed control 

Gramoxone brands See product label Burndown existing weeds 

Touchdown brands See product label Burndown existing weeds 

Roundup or other glyphosate 

brands

See product label Burndown existing weeds 

Warrior brands See product label To control insects, such as 

cutworm

Early Postemergence Tank Mixtures Applied After Corn Emergence 

The tank mix partners listed in Table 5 may be used in conventional, reduced or no-till 

systems and can be applied by the same methods and at the same timings as Acuron 

unless otherwise specified in the tank mix product label. Follow all tank mix product 

labels for use rates and restrictions. Perform a compatibility test prior to spraying the 

tank mix application. Do not apply Acuron tank mixtures to emerged sweet corn or 

yellow popcorn. 

Table 5: Tank Mixtures for Early Postemergence Weed Control with Acuron 

Tank Mix1

 Rate (Max) Objective

AAtrex or other solo Atrazine 

products

0.5-1.25 lbs. a.i./A Improved broadleaf and 

annual grass weed control 

Warrior brands 3.84 fl. oz./A To control insects, such as 

cutworm

Accent® Q As per product label Emerged grass control 

Basis® brands As per product label Emerged grass control 

Steadfast® Q As per product label Emerged grass control 

1

Consult the “Adjuvant” section of this label for directions when applying Acuron alone 

or in tank mixture to emerged corn (for grain, seed, or silage).

Acuron Programs with Glyphosate in Glyphosate Tolerant Corn 

Acuron may be applied early postemergence at a rate of 1.5-2 qts./A in tank mixture 

with a solo glyphosate product (e.g. Touchdown or Roundup brands) that is registered 

for use over-the-top in glyphosate tolerant field corn (e.g. Roundup Ready or AgrisureTM 

GT Corn). To minimize weed competition with the crop, target the application of this 

mixture to weeds in the 1 to 2 inch range. Do not apply this mixture to corn that is 

greater than 12 inches tall. If the glyphosate product has a built-in adjuvant system (i.e. 

the product label does not ask for additional adjuvant), only spray-grade ammonium 
Acuron Herbicide 

Page 27 

sulfate (AMS) at 8.5 lbs./100 gal should be added to this mixture. If the glyphosate 

product label calls for an adjuvant in addition to AMS, add a non-ionic surfactant (NIS) 

at 0.25% v/v and AMS to this spray mixture. Do not add urea ammonium nitrate (UAN), 

crop oil concentrate (COC), or methylated seed oil (MSO) type adjuvants to these 

mixtures, or crop injury may occur. Follow all directions for use and restrictions on the 

glyphosate product label. 

Alternatively, Acuron may be applied preemergence at a rate down to 2 qts./A as part of 

a two-pass weed control system when followed by a postemergence application of a 

glyphosate based product in glyphosate tolerant corn (e.g. Roundup Ready or Agrisure 

GT Corn). When used in this way, Acuron will provide reduced competition of the weeds 

listed in Table 1 for a period of 30 or more days, thus improving the timing flexibility and 

effectiveness of the glyphosate based product application. Follow all directions for use 

and restrictions on the glyphosate product label. 

Acuron may be applied preemergence at 1.25-1.5 qts./A as part of a two-pass weed 

control system when followed by Halex® GT post-emergence in glyphosate tolerant 

corn (e.g. Roundup Ready or Agrisure GT Corn). Follow all directions for use and 

restrictions on each product label. 

Acuron Programs for LibertyLink Corn 

Acuron may be applied early postemergence at a rate of 1.5 - 2 qts./A in tank mixture 

with Ignite and applied over-the-top in field corn designated as LibertyLink. To minimize 

weed competition with the crop, target the application of this mixture to weeds in the 1 

to 2 inch range. Do not apply this mixture to corn that is greater than 12 inches tall. 

Ammonium sulfate (AMS) may be added as a spray adjuvant as directed on the Ignite 

label. However, AMS should be the only adjuvant added to this tank mixture. Do not 

add urea ammonium nitrate (UAN), crop oil concentrate (COC), non-ionic surfactants 

(NIS), or methylated seed oil (MSO) type adjuvants to these mixtures, or crop injury 

may occur. Follow all directions for use and restrictions on the Ignite product label. 

Alternatively, Acuron may be applied preemergence at a rate down to 2 qts./A as part of 

a two-pass weed control system when followed by a postemergence application of 

Ignite in field corn designated as LibertyLink. When used in this way, Acuron will 

provide reduced competition of the weeds listed in Table 1 for a period of 30 or more 

days, thus improving the timing flexibility and effectiveness of the Ignite application. 

Follow all directions for use and restrictions on the Ignite product label. 

STORAGE AND DISPOSAL 

Do not contaminate water, food, or feed by storage or disposal. 

Pesticide Storage 

Keep container tightly closed when not in use. Do not store near seeds, fertilizers, or 

foodstuffs. Keep away from heat and flame. Ground water contamination may be 
Acuron Herbicide 

Page 28 

reduced by diking and flooring of permanent liquid bulk storage sites with an 

impermeable material. 

Pesticide Disposal 

Open dumping is prohibited. Waste resulting from the use of this product may be 

disposed of on site or at an approved waste disposal facility. Rinse spray equipment. 

Pesticide wastes are acutely hazardous. Improper disposal of excess pesticide, spray 

mixture, or rinsate is a violation of Federal law. If these wastes cannot be disposed of 

as described above, contact your State Pesticide or Environmental Control Agency, or 

the Hazardous Waste Representative at the nearest EPA Regional Office for guidance. 

Container Handling [equal to or less than 5 gallons] 

Non-refillable container. Do not reuse or refill this container. Offer for recycling if 

available. Triple rinse container (or equivalent) promptly after emptying. Triple rinse as 

follows: empty the remaining contents into application equipment of a mix tank and 

drain for 10 seconds after the flow begins to drip. Fill the container 1⁄4 full with water and 

recap. Shake for 10 seconds. Pour rinsate into application equipment or a mix tank or 

store rinsate for later use or disposal. Drain for 10 seconds after the flow begin to drip.

Repeat this procedure two more times. Then offer for recycling if available or puncture 

and dispose of in a sanitary landfill, or by incineration, or, by other procedures allowed 

by state and local authorities.

For minor spills, leaks, etc. follow all precautions on this label and clean up immediately. 

Take special care to avoid contamination of equipment and facilities during cleanup 

procedures and disposal of wastes. In the event of a major spill, fire, or other 

emergency, call 1-800-888-8372, day or night. If the container is damaged and leaking 

or material has been spilled follow these procedures: 

1. Cover spill with absorbent material. 

2. Sweep into disposal container. 

3. Wash area with detergent and water and follow with clean water rinse. 

4. Do not allow to contaminate water supplies. 

5. Dispose of according to instructions. 

Container Handling [greater than 5 gallons] 

Refillable container. Refill this container with pesticide only. Do not reuse this container 

for any other purpose. Cleaning the container before final disposal is the responsibility 

of the person disposing of the container. Cleaning before refilling is the responsibility of 

the refiller. To clean container before final disposal, empty the remaining contents from 

this container into application equipment or mix tank. Fill the container about 10 percent 

full with water. Agitate vigorously or recirculate water with the pump for 2 minutes. 

Pour or pump rinsate into application equipment or rinsate collection system. Repeat 

this rinsing procedure two more times. Then offer for recycling if available or puncture 

and dispose of in a sanitary landfill, or by incineration, or, by other procedures allowed 

by state and local authorities.
Acuron Herbicide 

Page 29 

For minor spills, leaks, etc. follow all precautions on this label and clean up immediately. 

Take special care to avoid contamination of equipment and facilities during cleanup 

procedures and disposal of wastes. In the event of a major spill, fire, or other 

emergency, call 1-800-8372, day or night. If the container is damaged and leaking or 

material has been spilled follow these procedures: 

1. Cover spill with absorbent material. 

2. Sweep into disposal container. 

3. Wash area with detergent and water and follow with clean water rinse. 

4. Do not allow to contaminate water supplies. 

5. Dispose of according to instructions. 

CONTAINER IS NOT SAFE FOR FOOD, FEED, OR DRINKING WATER! 

AAtrex, AcuronTM, Agrisure® GT, Bicep II Magnum, Bicep Lite II Magnum,

Callisto®, Callisto Plant Technology®, Concep®, Dual II Magnum, Dual Magnum,

Gramoxone, Halex® GT, Princep, Touchdown, Warrior, and the SYNGENTA 

Logo are Trademarks of a Syngenta Group Company. 

Accent®, Basis®, Steadfast®, and Viton® are trademarks of E. I. du Pont de Nemours 

and Company 

Counter is a trademark of BASF Corporation 

Ignite® and LibertyLink® are trademarks of Bayer CropScience 

Roundup and Roundup Ready® are trademarks of Monsanto Company 

201X Syngenta 

For non-emergency information (e.g., current product information), call 

Syngenta Crop Protection at 1-800-334-9481 

Manufactured for: 

Syngenta Crop Protection, LLC 

P. O. Box 18300 

Greensboro, North Carolina 27419-8300 
Acuron Herbicide 

Page 30 

[BASE LABEL]

RESTRICTED USE PESTICIDE 

(GROUND AND SURFACE WATER CONCERNS) 

FOR RETAIL SALE TO AND USE ONLY BY CERTIFIED APPLICATORS OR PERSONS 

UNDER THEIR DIRECT SUPERVISION, AND ONLY FOR THOSE USES COVERED BY THE 

CERTIFIED APPLICATOR’S CERTIFICATION. 

THIS PRODUCT IS A RESTRICTED-USE HERBICIDE DUE TO GROUND AND SURFACE 

WATER CONCERNS. USERS MUST READ AND FOLLOW ALL PRECAUTIONARY 

STATEMENTS AND INSTRUCTIONS FOR USE IN ORDER TO MINIMIZE POTENTIAL FOR 

ATRAZINE TO REACH GROUND AND SURFACE WATER. 

Sale, use and distribution of this product in Nassau and Suffolk Counties in the 

State of New York is prohibited. 

GROUP 5 15 27 HERBICIDES

Acuron Herbicide 

A Herbicide for Control of Annual Grass and Broadleaf Weeds in Field Corn, Seed 

Corn, Silage Corn, Sweet Corn and Yellow Popcorn

Active Ingredients*: 

S-Metolachlor: (CAS No. 87392-12-9) ................................................................... 23.40% 

Atrazine**: (CAS No. 1912-24-9) .......................................................................... 10.93% 

Mesotrione: (CAS No. 104206-82-8) ....................................................................... 2.60% 

Bicyclopyrone: (CAS No. 352010-68-5) .................................................................. 0.65% 

Other Ingredients: 62.42% 

Total: 100.00% 

*Active ingredients per gallon: Atrazine 1.0 pound, Bicyclopyrone 0.06 pounds, 

Mesotrione 0.24 pounds and S-metolachlor 2.14 pounds. 

**Atrazine with a maximum of 0.45% related triazines. 

KEEP OUT OF REACH OF CHILDREN.

CAUTION

See directions for use in attached booklet. 

AGRICULTURAL USE REQUIREMENTS 

Use this product only in accordance with its labeling and with the Worker Protection 

Standard, 40 CFR part 170. Refer to supplemental labeling under "Agricultural Use 

Requirements" in Directions for Use section for information about this standard. 

EPA Reg. No. 100-XXXX 

2.5 gallons 

Net Contents 

120 gallons 

Net Contents 

220 gallons 

Net Contents 

330 gallons 

Net Contents 

____ gallons[bulk] 

Net Contents 
Acuron Herbicide 

Page 31 

FIRST AID

If swallowed x Call a Poison Control Center or doctor immediately for treatment 

advice. 

x Have person sip a glass of water if able to swallow. 

x Do not induce vomiting unless told to do so by a poison control 

center or doctor. 

x Do not give anything to an unconscious person. 

If in eyes x Hold eye open and rinse slowly and gently with water for 15-20 

minutes.

x Remove contact lenses, if present, after the first 5 minutes, then 

continue rinsing eye. 

x Call a Poison Control Center or doctor for treatment advice. 

If on skin or 

clothing

x Take off contaminated clothing. 

x Rinse skin immediately with plenty of water for 15-20 minutes. 

x Call a Poison Control Center or doctor for treatment advice. 

If inhaled x Move person to fresh air. 

x If person is not breathing, call 911 or an ambulance, then give 

artificial respiration, preferably by mouth-to-mouth, if possible. 

x Call a Poison Control Center or doctor for further treatment advice. 

Have the product container or label with you when calling a poison control center or 

doctor, or going for treatment.

HOT LINE NUMBER 

For 24 Hour Medical Emergency Assistance (Human or Animal) 

or Chemical Emergency Assistance (Spill, Leak, Fire or Accident), 

Call

1-800-888-8372

PRECAUTIONARY STATEMENTS 

HAZARDS TO HUMANS AND DOMESTIC ANIMALS 

CAUTION

Harmful if swallowed. Causes moderate eye injury. Avoid contact with eyes, skin, or 

clothing. Prolonged or frequently repeated skin contact may cause allergic reactions in 

some individuals. 

Personal Protective Equipment (PPE) 

Some materials that are chemical-resistant to this product are listed below. 
Acuron Herbicide 

Page 32 

Mixers, Loaders, Applicators and other handlers must wear: 

x Coveralls over short-sleeved shirt and short pants 

x Chemical-resistant gloves – Category A (e.g. barrier laminate, butyl rubber, nitrile 

rubber, neoprene rubber, natural rubber, polyethylene, polyvinyl chloride (PVC) 

or Viton®) 

x Chemical-resistant footwear plus socks 

x Chemical-resistant apron when mixing/loading, cleaning up spills, or cleaning 

equipment, or otherwise exposed to the concentrate 

x Chemical-resistant headgear for overhead exposure. 

See engineering controls for additional requirements 

Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions 

for washables exist, use detergent and hot water. Keep and wash PPE separately from 

other laundry. Discard clothing and other absorbent materials that have been drenched 

or heavily contaminated with this product’s concentrate. Do not reuse them. 

Engineering Control Statements 

When applicators use closed systems or enclosed cabs in a manner that meets the 

requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides 

[40 CFR 170.240(d)(5)], the handler PPE requirements may be reduced or modified as 

specified in the WPS. 

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. 

Environmental Hazards 

Do not apply directly to water, to areas where surface water is present, or to intertidal 

areas below the mean high water mark. Do not contaminate water when disposing of 

equipment wash water or rinsate. This product contains atrazine, which has been 

shown to be toxic to aquatic invertebrates. Runoff and drift from treated areas may be 

hazardous to aquatic organisms in neighboring areas. Do not apply when weather 

conditions favor drift from treated areas. 
Acuron Herbicide 

Page 33 

Ground Water Advisory 

Acuron contains the active ingredients atrazine, S-metolachlor, and bicyclopyrone. 

Atrazine can travel (seep or leach) through soil and can enter ground water which may 

be used as drinking water. Atrazine has been found in ground water. Users are advised 

not to apply atrazine to sand and loamy sand soils where the water table (ground water) 

is close to the surface and where these soils are very permeable, i.e., well-drained. 

Your local agricultural agencies can provide further information on the type of soil in 

your area and the location of ground water. 

S-metolachlor has the potential to leach through soil into ground water under certain 

conditions as a result of agricultural use. Use of this product in areas where soils are 

permeable, particularly where the water table is shallow may result in ground water 

contamination.

Bicyclopyrone is known to leach through soil into ground water under certain conditions 

as a result of label use. This chemical may leach into ground water if used in areas 

where soils are permeable, particularly where the water table is shallow. 

Surface Water Advisory

This product has a 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 bicyclopyrone from 

runoff water and sediment. Runoff of this product will be reduced by avoiding 

applications when rainfall or irrigation is expected to occur within 48 hours. 

Mixing/Loading Instructions 

Care must be taken when using this product to prevent back-siphoning into wells, spills, 

or improper disposal of excess pesticide, spray mixtures, or rinsates. 

Check valves or antisiphoning devices must be used on mixing equipment. 

This product must not be mixed/loaded or used within 50 ft. of wells, including 

abandoned wells, drainage wells, and sink holes. Operations that involve mixing, 

loading, rinsing, or washing to this product into or from pesticide handling or application 

equipment or containers within 50 ft. of any well are prohibited, unless conducted on an 

impervious pad constructed to withstand the weight of the heaviest load that may be 

positioned on or moved across the pad. Such a pad shall be designed and maintained 

to contain any product spills or equipment leaks, container or equipment rinse or wash 

water, and rain water that may fall on the pad. Surface water shall not be allowed to 

either flow over or from the pad, which means the pad must be self-contained. The pad 
Acuron Herbicide 

Page 34 

shall be sloped to facilitate material removal. An unroofed pad shall be of sufficient 

capacity to contain, at a minimum, 110% of the capacity of the largest pesticide 

container or application equipment on the pad. A pad that is covered by a roof of 

sufficient size to completely exclude precipitation from contact with the pad shall have a 

minimum containment capacity of 100% of the capacity of the largest pesticide 

container or application equipment on the pad. Containment capacities as described 

above shall be maintained at all times. The above specified minimum containment 

capacities do not apply to vehicles when delivering pesticide shipments to the 

mixing/loading site. 

Additional State imposed requirements regarding well head setbacks and operational 

area containment must be observed. 

This product must not be mixed or loaded within 50 ft. of perennial or intermittent 

streams and rivers, natural or impounded lakes and reservoirs. This product may not 

be applied within 66 ft. of the points where field surface water runoff enters perennial or 

intermittent streams and rivers or within 200 ft. from the edge of natural or impounded 

lakes and reservoirs. If this product is applied to highly erodible land, the 66 ft. buffer or 

setback from runoff entry points must be planted to crop, or seeded with grass or other 

suitable crop. 

Tile-Outletted Terraced Fields Containing Standpipes 

One of the following restrictions must be used in applying atrazine to tile-outletted 

terraced fields containing standpipes: 

1. Do not apply this product within 66 ft. of standpipes in tile-outletted terraced 

fields.

2. Apply this product to the entire tile-outletted terraced field and immediately 

incorporate it to a depth of 2-3 inches in the entire field. 

3. Apply this product to the entire tile-outletted terraced field under a no-till practice 

only when a high crop residue management practice is practiced. High crop 

residue management is described as a crop management practice where little or 

no crop residue is removed from the field during and after crop harvest. 

Physical and Chemical Hazards

Do not use or store near heat or open flame.
Acuron Herbicide 

Page 35 

[For 120, 220, 330 gallon and bulk] 

CONDITIONS OF SALE AND LIMITATION OF WARRANTY AND LIABILITY 

NOTICE: Read the entire Directions for Use and Conditions of Sale and Limitation of 

Warranty and Liability before buying or using this product. If the terms are not 

acceptable, return the product at once, unopened, and the purchase price will be 

refunded.

The Directions for Use of this product must be followed carefully. It is impossible to 

eliminate all risks inherently associated with the use of this product. Crop injury, 

ineffectiveness or other unintended consequences may result because of such factors 

as manner of use or application, weather or crop conditions, presence of other materials 

or other influencing factors in the use of the product, which are beyond the control of 

SYNGENTA CROP PROTECTION, LLC or Seller. To the extent permitted by 

applicable law, Buyer and User agree to hold SYNGENTA and Seller harmless for any 

claims relating to such factors. 

SYNGENTA warrants that this product conforms to the chemical description on the label 

and is reasonably fit for the purposes stated in the Directions for Use, subject to the 

inherent risks referred to above, when used in accordance with directions under normal 

use conditions. To the extent permitted by applicable law: (1) this warranty does not 

extend to the use of the product contrary to label instructions, or under conditions not 

reasonably foreseeable to or beyond the control of Seller or SYNGENTA, and, (2) Buyer 

and User assume the risk of any such use. To the extent permitted by applicable law, 

SYNGENTA MAKES NO WARRANTIES OF MERCHANTABILITY OR OF FITNESS 

FOR A PARTICULAR PURPOSE NOR ANY OTHER EXPRESS OR IMPLIED 

WARRANTY EXCEPT AS WARRANTED BY THIS LABEL. 

To the extent permitted by applicable law, in no event shall SYNGENTA or Seller be 

liable for any incidental, consequential or special damages resulting from the use or 

handling of this product. TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE

EXCLUSIVE REMEDY OF THE USER OR BUYER, AND THE EXCLUSIVE LIABILITY 

OF SYNGENTA AND SELLER FOR ANY AND ALL CLAIMS, LOSSES, INJURIES 

OR DAMAGES (INCLUDING CLAIMS BASED ON BREACH OF WARRANTY, 

CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) 

RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT, SHALL BE THE 

RETURN OF THE PURCHASE PRICE OF THE PRODUCT OR, AT THE ELECTION 

OF SYNGENTA OR SELLER, THE REPLACEMENT OF THE PRODUCT. 

SYNGENTA and Seller offer this product, and Buyer and User accept it, subject to the 

foregoing Conditions of Sale and Limitation of Warranty and Liability, which may not be 

modified except by written agreement signed by a duly authorized representative of 

SYNGENTA.
Acuron Herbicide 

Page 36 

STORAGE AND DISPOSAL 

Do not contaminate water, food, or feed by storage or disposal.

Pesticide Storage 

Keep container tightly closed when not in use. Do not store near seeds, fertilizers, or 

foodstuffs. Keep away from heat and flame. Ground water contamination may be 

reduced by diking and flooring of permanent liquid bulk storage sites with an 

impermeable material. 

Pesticide Disposal 

Open dumping is prohibited. Waste resulting from the use of this product may be 

disposed of on site or at an approved waste disposal facility. Rinse spray equipment. 

Pesticide wastes are acutely hazardous. Improper disposal of excess pesticide, spray 

mixture, or rinsate is a violation of Federal law. If these wastes cannot be disposed of 

as described above, contact your State Pesticide or Environmental Control Agency, or 

the Hazardous Waste Representative at the nearest EPA Regional Office for guidance. 

Container Handling [equal to or less than 5 gallons] 

Non-refillable container. Do not reuse or refill this container. Offer for recycling if 

available. Triple rinse container (or equivalent) promptly after emptying. Triple rinse as 

follows: empty the remaining contents into application equipment of a mix tank and 

drain for 10 seconds after the flow begins to drip. Fill the container 1⁄4 full with water and 

recap. Shake for 10 seconds. Pour rinsate into application equipment or a mix tank or 

store rinsate for later use or disposal. Drain for 10 seconds after the flow begin to drip.

Repeat this procedure two more times. Then offer for recycling if available or puncture 

and dispose of in a sanitary landfill, or by incineration, or, by other procedures allowed 

by state and local authorities.

For minor spills, leaks, etc. follow all precautions on this label and clean up immediately. 

Take special care to avoid contamination of equipment and facilities during cleanup 

procedures and disposal of wastes. In the event of a major spill, fire, or other 

emergency, call 1-800-888-8372, day or night. If the container is damaged and leaking 

or material has been spilled follow these procedures: 

1. Cover spill with absorbent material. 

2. Sweep into disposal container. 

3. Wash area with detergent and water and follow with clean water rinse. 

4. Do not allow to contaminate water supplies. 

5. Dispose of according to instructions. 

Container Handling [greater than 5 gallons] 

Refillable container. Refill this container with pesticide only. Do not reuse this container 

for any other purpose. Cleaning the container before final disposal is the responsibility 

of the person disposing of the container. Cleaning before refilling is the responsibility of 

the refiller. To clean container before final disposal, empty the remaining contents from 
Acuron Herbicide 

Page 37 

this container into application equipment or mix tank. Fill the container about 10 percent 

full with water. Agitate vigorously or recirculate water with the pump for 2 minutes. 

Pour or pump rinsate into application equipment or rinsate collection system. Repeat 

this rinsing procedure two more times. Then offer for recycling if available or puncture 

and dispose of in a sanitary landfill, or by incineration, or, by other procedures allowed 

by state and local authorities.

For minor spills, leaks, etc. follow all precautions on this label and clean up immediately. 

Take special care to avoid contamination of equipment and facilities during cleanup 

procedures and disposal of wastes. In the event of a major spill, fire, or other 

emergency, call 1-800-8372, day or night. If the container is damaged and leaking or 

material has been spilled follow these procedures: 

1. Cover spill with absorbent material. 

2. Sweep into disposal container. 

3. Wash area with detergent and water and follow with clean water rinse. 

4. Do not allow to contaminate water supplies. 

5. Dispose of according to instructions. 

CONTAINER IS NOT SAFE FOR FOOD, FEED, OR DRINKING WATER! 

AcuronTM and the SYNGENTA Logo are Trademarks of a Syngenta Group Company. 

201X Syngenta 

Manufactured for: 

Syngenta Crop Protection, LLC 

P. O. Box 18300 

Greensboro, North Carolina 27419-8300 

Acuron Herbicide-Version-C – bb – 1-26-15 

000100-xxxxx.20120912C.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf 

Acuron Herbicide-Version-D – bb – 3-3-15 

000100-xxxxx.20120912D.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf 

Acuron Herbicide-Version-E – bb – 3-4-15 

000100-xxxxx.20120912E.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf 

Acuron Herbicide-Version-F – bb – 3-10-15 

000100-xxxxx.20120912F.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf 

Acuron Herbicide-Version-G – bb – 3-11-15 

000100-xxxxx.20120912G.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf 

Acuron Herbicide-Version-H – bb – 4-1-15 

000100-xxxxx.20120912H.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf 
Acuron Herbicide 

Page 38 

Acuron Herbicide-Version-I – pl – 4-20-15 

000100-xxxxx.20120912I.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf 

Acuron Herbicide-Version-J – bb – 4-22-15 

000100-xxxxx.20120912J.SYN-A19707Herbicide_NewProduct_SEPT2012.pdf