crop-chem-docs/corpus/epa_ppls/5481-524.md

# IMPACT HERBICIDE

- EPA Reg No: **5481-524**
- Registrant: AMVAC CHEMICAL CORPORATION
- Signal word: Caution
- Active ingredients: Topramezone (29.7%)
- Label accepted: 2026-08-06
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/005481-00524-20260806.pdf

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August 06, 2026
SENT BY EMAIL
Julie Porter
juliep@amvac.com
AMVAC CHEMICAL CORPORATION
Subject: Labeling Notification per Pesticide Registration Notice (PRN) 98-10 - Addition of the larger
container Storage and Disposal directions and other minor label changes
Product Name: IMPACT HERBICIDE
Admin Number: 5481-524
EPA Receipt Date: 06/02/2026
Action Case Number: 00700490
Dear Julie Porter:
The U.S. Environmental Protection Agency is in receipt of your application for notification under Pesticide
Registration Notice 98-10 for the above referenced product. The EPA has conducted a review of this request
for its applicability under PRN 98-10 and finds that the action requested falls within the scope of PRN 98-10.
The labeling submitted with this application has been stamped "Notification" and will be placed in our records.
Should you wish to add/retain a reference to your 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 EPA. If the website is false or misleading, the product will be considered to be misbranded and
sale or distribution of the product is unlawful under FIFRA section 12(a)(1)(E). 40 CFR § 156.10(a)(5) lists
examples of statements the 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 EPA find or if it is brought to
our attention that a website contains statements or claims substantially differing from statements or claims
made in connection with obtaining a FIFRA section 3 registration, the website will be referred to the EPA’s
Office of Enforcement and Compliance Assurance.

If you have questions, please contact Olivia Swanson by telephone at (202) 564-2255 or via email at
swanson.olivia@epa.gov.
Sincerely,
Lydia Crawford, PM 24
FHB, RD
Office of Pesticide Programs

524-20210218ab IMPACT (Master) Page 1 of 16 
{Note to reviewer: Text in curvy brackets { } indicate a note to the EPA reviewer and will not appear on the label. Text in brackets 
[ ] is optional, and may or may not appear on the end use label. Text in parentheses ( ) will appear on the end use label.} 
 
IMPACT HERBICIDE 
 
For control of emerged weeds in all types of field corn, seed corn, popcorn, and sweet corn, and weed control 
between crops. 
 
Active Ingredient: 
Topramezone [3-(4,5-dihydro-3-isoxazolyl)-2-methyl-4- 
(methylsulfonyl) phenyl] (5-hydroxy-1-methyl-1H-pyrazol-4-yl) methanone…… ……………………………………………..29.7% 
Inert Ingredients:…………………………………………………………………………………………………………….. …………………………… 70.3% 
Total:…………………………………………………………………………………………………………………………………………………………… 100.0% 
 (1 gallon contains 2.8 pounds of TOPRAMEZONE free acid) 
 
KEEP OUT OF REACH OF CHILDREN 
CAUTION/PRECAUCION 
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en detalle. 
(If you do not understand this label, find someone to explain it to you in detail). 
FIRST AID 
If in eyes: 
• Hold eye open and rinse slowly and gently with water for 15 - 20 minutes. 
• Remove contact lenses, if present, after first 5 minutes, then continue rinsing eye. 
• Call a poison control center or doctor for treatment advice. 
If swallowed: 
• Call a poison control center or doctor immediately for treatment advice. 
• Have person sip a glass of water if able to swallow. 
• Do not induce vomiting unless told to do so by a poison control center or doctor. 
• Do not give anything to an unconscious person. 
If on skin or clothing: 
• Take off contaminated clothing. 
• Rinse skin immediately with plenty of water for 15 - 20 minutes. 
• Call a poison control center or doctor for treatment advice. 
EMERGENCY INFORMATION 
Have the product container or label with you when calling a poison control center or doctor, or going for 
treatment. 
FOR THE FOLLOWING EMERGENCIES, PHONE 24 HOURS A DAY: 
For Medical Emergencies phone:......................................................................................................1-888-681-4261 
For Transportation Emergencies, including spill, leak or fire, phone: CHEMTREC®……… ..................1-800-424-9300 
For Product Use Information phone: AMVAC®……………………………………… ....…….... ...........................1-888-462-6822 
See insideback panel booklet for First Aid, Precautionary Statements, Directions for Use, a nd Storage and 
Disposaladditional Precautionary Statements. 
EPA Reg. No. 5481-524 Net Contents: 
EPA Est. No. 
[Letter(s) in lot number correspond(s) to superscript in EPA Est. No.] 
 
Topramezone Group 27 Herbicide 
5481-524
8/6/2026

524-20210218ab IMPACT (Master) Page 2 of 16 
 
AMVAC Chemical Corporation 
15440 Laguna Canyon Road, Suite 100 
4695 MacArthur Court, Suite 1200 
Irvine, CA 92618Newport Beach, CA 92660 U.S.A. 
1-888-462-6822 
 
PRECAUTIONARY STATEMENTS 
Hazards to Humans and Domestic Animals 
CAUTION. Causes moderate eye irritation. Avoid contact with skin, eyes, or clothing. Harmful if swallowed or 
absorbed through the skin. Wash thoroughly with soap and water after handling and before eating, drinking, 
chewing gum, using tobacco, or using the toilet. Remove and wash contaminated clothing before reuse. 
 
Personal Protective Equipment (PPE) 
 
Applicators and other handlers must wear: 
 
• Long-sleeved shirt and long pants 
• Chemical-resistant gloves made of barrier laminate, polyethylene, Viton® ≥ 14 mils, rubber ≥ 14 mils, or polyvinyl 
chloride ≥ 14 mils. 
• Shoes plus socks 
Discard clothing and other absorbent materials that have been drenched or heavily contaminated with this 
product's concentrate. Do not reuse them. Follow manufacturer's instructions for cleaning and maintaining PPE. 
If no such instructions for washables, use detergent and hot water. Keep and wash PPE separately from other 
laundry. 
 
User Safety Recommendations 
Users should: 
• Wash hands before eating, drinking, chewing gum, using tobacco, or using the toilet. 
• Remove clothing immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing. 
• Remove clothing/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 Controls 
When handlers use closed systems, enclosed cabs, or aircraft in a manner that meets the requirements listed in 
the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR 170. 607(d-f)], the handler PPE 
requirements may be reduced or modified as specified in the WPS. 
 
Environmental Hazards 
DO NOT apply directly to water, or areas where surface water is present, or to inter- tidal areas below the mean 
high water mark. DO NOT contaminate water when disposing of equipment wash water. 
 
Product must be used in a manner which will prevent back siphoning in wells, spills or improper disposal of excess 
pesticide, spray mixtures or rinsate. 
 
DIRECTIONS FOR USE 
It is a violation of Federal law to use this product in a manner inconsistent with its labeling. 
Do not apply this product in a way that will contact workers or other persons, either directly or through drift. Only 
protected handlers may be in the area during application. For any requirements specific to your State or Tribe, 
consult the agency responsible for pesticide regulation.

524-20210218ab IMPACT (Master) Page 3 of 16 
Agricultural Use Requirements 
Use this product only in accordance with its labeling and with the Worker Protection Standard, 40 CFR part 170. 
This Standard contains requirements for the protection of agricultural workers on farms, forests, nurseries, and 
greenhouses, and handlers of agricultural pesticides. It contains requirements for training, decontamination, 
notification, and emergency assistance. It also contains specific instructions and exceptions pertaining to the 
statements on this label about personal protective equipment (PPE), and restricted -entry interval. The 
requirements in this box only apply to uses of this product that are covered by the Worker Protection Standard. 
 
Do not enter or allow worker entry into treated areas during the restricted entry interval (REI) of 12 hours. 
 
PPE required for early entry to treated areas that is permitted under the Worker Protection Standard and that 
involves contact with anything that has been treated, such as plants, soil, or water, is: 
• Coveralls 
• Chemical-resistant gloves made of barrier laminate, polyethylene, Viton ≥ 14 mils, rubber ≥ 14 mils, or polyvinyl 
chloride ≥ 14 mils. 
• Shoes plus socks 
 
All applicable directions, restrictions, precautions and Limited Warranty and Disclaimer are to be followed. This 
labeling must be in the user’s possession during application. 
 
I. INFORMATION 
IMPACT is a systemic herbicide for selective control or growth suppression of emerged broadleaf and grass weeds 
in field corn (grown for grain, silage or seed), popcorn (grown for ear, kernel or seed) and sweet corn (grown for 
ear, kernel or seed) , and between crop applications . This product may be used on conventional and herbicide 
resistant/tolerant corn hybrids. AMVAC has not tested all inbred lines of corn for tolerance to IMPACT. Before 
using IMPACT, refer to seed company recommendations for use on inbred lines of field corn, popcorn and sweet 
corn. 
 
Susceptible weeds will stop growing soon after IMPACT application while death of weeds may take several more 
days, depending on growing conditions before and after application, and weed species and size. When applied 
broadcast to emerged weeds as directed, IMPACT will control or suppress the broadleaf weeds listed in Table 1 
and the grass weeds listed in Table 2. 
 
IMPACT may be tank-mixed with other herbicides to provide both broader spectrum and residual weed control. 
Refer to Tank Mixes in the Crop Use Directions (Section VII). It is the pesticide user’s responsibility to ensure that 
all products in the listed mixtures are registered for the intended use. Users must follow the most restrictive 
directions for use and precautionary statements of each product in the tank mixture. Read and follow the 
applicable restrictions and limitations and directions for use on all product labels involved in tank mixing. 
 
IMPACT applications must also include recommended spray additives . Refer to Additives and Mixing Order 
(Sections III and IV).

524-20210218ab IMPACT (Master) Page 4 of 16 
TABLE 1. Emerged Broadleaf Weeds Controlled or Partially Controlled with IMPACT and Maximum Weed Size 
at Application 
BROADLEAF WEEDS1 
IMPACT 
0.75 FL OZ PER ACRE 
IMPACT 
1.0 FL OZ PER ACRE 
WEEDS ≤ 4 INCHES IN SIZE2 WEEDS ≤ 6 INCHES IN SIZE2 
Amaranth, Palmer C C 
Amaranth, Powell C C 
Bindweed, field PC PC 
Burcucumber C3,4 C4 
Buckwheat, wild NC C3,4 
Canola, volunteer C C 
Carpetweed C C 
Chickweed, common C C 
Cocklebur, common C C 
Dandelion PC PC 
Devil’s-claw C3,4 C4 
Galinsoga, hairy C C 
Henbit C C 
Jimsonweed C C 
Kochia C4 C4 
Ladysthumb C4 C4 
Lambsquarters, common C C 
Lettuce, prickly C C 
Mallow, common C3,4 C3,4 
Mallow, Venice C3,4 C3,4 
Marestail (horseweed) C C 
Morningglory, entireleaf C3,4 C3,4 
Morningglory, ivyleaf C3,4 C3,4 
Mustard, wild C C 
Nightshade, black C C 
Nightshade, Eastern black C C 
Nightshade, hairy C C 
Pigweed, prostrate C C 
Pigweed, redroot C C 
Pigweed, smooth C C 
Pigweed, tumble C C 
Purslane, common PC3 C3,4 
Pusley, Florida C3 C 
Ragweed, common C C 
Ragweed, giant C C 
Shepherd’s-purse C C 
Sida, prickly C3,4 C4 
Smartweed, Pennsylvania C4 C4 
Sunflower, wild (common) C C 
Thistle, Canada PC3 PC 
Thistle, Russian C C 
Velvetleaf C C 
Waterhemp, common C C 
Waterhemp, tall C C

524-20210218ab IMPACT (Master) Page 5 of 16 
 
1Refer to Section X for a list of scientific names. 
2Broadleaf Weed Rating: C=Control; PC=Partial Control; NC=Not Controlled. 
3Apply before weed exceeds 3 inches in height. 
4The addition of atrazine at minimum 0.5 lb per acre is required for control. 
 
TABLE 2. Emerged Grass Weeds Controlled or Partially Controlled with IMPACT at 0.75 to 2.0 fl oz/A and 
Maximum Weed Size at Application 
 
GRASS WEEDS1 
IMPACT 
0.75 FL OZ PER ACRE 
IMPACT 
1.0 FL OZ PER ACRE 
IMPACT 
1.5 – 2.0 FL OZ PER 
ACRE 
GRASSES ≤ 3 INCH SIZE2 GRASSES ≤ 4 INCH SIZE2 GRASSES ≤ 4 INCH SIZE2 
Barnyardgrass C5 C C 
Crabgrass, large C5 C5 C 
Crabgrass, smooth C5 C5 C 
Cupgrass, woolly PC C3 C 
Foxtail, giant C C C 
Foxtail, green C5 C C 
Foxtail, yellow PC C3,5 C 
Goosegrass C C C 
Johnsongrass, rhizome NC NC PC4 
Johnsongrass, seedling PC C C 
Millet, wild-proso C C C 
Panicum, fall PC C3,5 C 
Panicum, Texas PC PC C4,5 
Sandbur, field NC PC C4,5 
Shattercane PC PC C4,5 
Signalgrass, broadleaf PC C3,5 C5 
1Refer to Section X for a list of scientific names. 
2Grass Weed Rating: C=Control; PC=Partial Control; NC = Not Controlled. 
3Apply before grass exceeds 3 inches in height. 
4For best performance on these grass weeds use a rate of 2 fl oz per acre. 
5The addition of atrazine at minimum 0.5 lb per acre is required for control. 
 
Herbicide Group and Site of Action 
IMPACT is absorbed by leaves, roots, and shoots and translocated to the growing points of sensitive weeds to 
provide control of emerged weeds. IMPACT controls weeds by inhibiting carotenoid biosynthesis (HPPD inhibitor 
GROUP 27). Temperature and moisture conditions for active plant growth are important for optimum IMPACT 
activity. IMPACT applications to weeds during periods of stress conditions such as extreme cold or hot 
temperatures, and/or moisture stress can result in reduced herbicidal performance. 
 
WEED RESISTANCE MANAGEMENT 
 
It is critical to adopt a diversified weed management system in order to provide appropriate stewardship for this 
group 27 herbicide and to ensure consistent weed control and to best protect potential crop yield. Herbicide 
best management practices should be augmented with cultural (e.g., crop rotation) and mechanical (e.g., tillage) 
tactics. Effort should be expended to keep escaped weeds from contributing seeds to the soil weed seed bank. 
Scouting soon after herbicide application is an important strategy to identify weed population shifts or herbicide-
resistant biotypes before the problems become more difficult to manage. Take precautions to keep equipment 
free of weed seeds when moving from field to field. This is extremely important if fields are custom harvested.

524-20210218ab IMPACT (Master) Page 6 of 16 
By adopting best management practices and providing stewardship to protect against the evolution of herbicide 
resistance, crop yield potential is higher and thus economic returns are greater. 
 
To delay herbicide resistance take one or more of the following steps: 
 
• Rotate the use of IMPACT herbicide within a growing season and among growing seasons with herbicide 
groups other than 27 that control the same weeds. 
• Use tank mixtures with herbicides from a different group if such use is permitted; where information on 
resistance in target weed species is available, use the less resistance -prone partner at a rate that will 
control the target weed(s) equally as well as the more resistance- prone partner. Consult your local 
extension service or certified crop advisor if you are unsure as to which active ingredient is currently less 
prone to resistance. 
• Adopt an integrated weed- management program for herbicide use that includes scouting and uses 
historical information related to herbicide use and crop rotation, and that considers tillage (or other 
mechanical control methods), cultural (e.g., higher crop s eeding rates; precision fertilizer application 
method and timing to favor the crop and not the weeds), biological (weed-competitive crops or varieties) 
and other management practices. 
• Scout fields prior to application to identify the weed species present and to determine if the intended 
application of the product, and tank-mix partners if needed, will be effective on the stages of weed growth 
observed in a specific field. 
• Following herbicide application, scout the fields to confirm efficacy of the treatment and to monitor weed 
populations for early signs of resistance development. Indicators of possible herbicide resistance include: 
(1) failure to control a weed species normally controlled by the herbicide at the dose applied, especially if 
control is achieved on adjacent weeds; (2) a spreading patch of non-controlled plants of a particular weed 
species; (3) surviving plants mixed with controlled individuals of the same weed species. 
• If resistance is suspected, prevent weed seed production in the affected area by using an alternative 
herbicide from a different group or by a mechanical method such as hoeing or tillage. Prevent movement 
of resistant weed seeds to other fields by cleaning harvesting and tillage equipment when moving between 
fields, and planting clean seed. 
• Do not rely on a single herbicide site of action (i.e. herbicide group number) for weed control during the 
growing season. 
• Avoid making application of herbicides having the same group number(s) more than twice per season. 
• Use a preemergence herbicide providing residual control of grass and broadleaf weeds to reduce weed 
emergence and competition with the crop and allow more timely postemergence herbicide application. 
• If a weed pest population continues to progress after treatment with this product, discontinue use of this 
product, and switch to another management strategy or herbicide with a different herbicide group 
number, if available. 
• Contact your local extension specialist or certified crop advisor to determine if suspected resistant weeds 
to these herbicide group number(s) have been found in your region, for additional herbicide resistance-
management and/or integrated weed -management recommendations for specific crops and weed 
biotypes. 
• For further information on product performance and weed resistance management or to report suspected 
weed resistance, contact your local AMVAC representative directly or at 1-888-462-6822. 
 
Crop Tolerance 
 
IMPACT should be applied during favorable growing conditions for optimum crop tolerance and weed control. 
Crops under environmental stress are more likely to show injury from any herbicide application. Rarely, plants 
under extremely stressful growing conditions and treated with IMPACT may show minor, transient bleaching of the 
portion of the leaves intercepting the spray application. These symptoms are temporary and crop growth is not 
affected. 
 
Cultivation

524-20210218ab IMPACT (Master) Page 7 of 16 
Avoid disturbing (e.g., cultivation) treated areas for at least 7 days following an application of IMPACT to allow 
maximum possible herbicide uptake, translocation, and weed control. If cultivation is part of a diverse weed 
management program, it is important to avoid deep cultivation that will move dormant weed seeds into the soil 
zone where germination is likely. 
 
Insecticide Information 
 
IMPACT may be used sequentially or in combination with soil -applied or foliar-applied insecticides registered for 
use in corn. 
 
Cleaning Spray Equipment 
 
To avoid injury to sensitive crops, drain and clean application equipment thoroughly using a strong detergent or 
commercial sprayer cleaner according to the manufacturer’s directions. Equipment should be cleaned and triple 
rinsed before and after applying this product. 
 
II. APPLICATION INSTRUCTIONS 
IMPACT is effective for control of many emerged weeds in conservation and conventional tillage crop production 
systems. 
 
Do not apply IMPACT
 within 30 feet of native plant community. 
 
The applicator is responsible for any loss or damage that results from spraying IMPACT
 in a manner other than 
recommended in this label. In addition, applicator must follow all applicable state and local regulations and 
ordinances when making applications. 
 
IMPACT Application Rate and Timing: 
• Apply up to a total of 2.0 fluid ounce s of IMPACT ( 0.044 lb topramezone ), in a single application or 
sequential applications, per acre per growing season. 
• IMPACT can be applied up to 45 days prior to corn harvest. 
• Apply IMPACT to emerged broadleaf and grass weeds that are actively growing. 
• For optimal weed control apply IMPACT before weeds exceed labeled maximum size. 
• IMPACT should be applied a minimum of one hour before rainfall or overhead irrigation. 
 
Spray Coverage 
Weeds must be thoroughly covered with spray droplets to achieve consistent control of emerged weeds. Dense 
leaf canopies will shelter small weeds and can prevent adequate spray coverage on these weeds resulting in poor 
overall weed control. 
 
Ground Application Methods and Equipment 
 
Uniformly apply IMPACT with properly calibrated ground equipment in 15 or more gallons of water per acre. Use 
water volumes of greater than 15 gallons per acre when treating larger weeds and/or dense weed infestations. 
Select nozzle types , spray pressure, and carrier volume that deliver medium to coarse spray droplets (250-400 
microns in diameter) which will thoroughly cover target weeds and will penetrate to smaller weeds which are 
sheltered by larger weeds . Do not use nozzle types that produce very coarse, extremely coarse or ultra -coarse 
spray droplets, as this may result in unsatisfactory weed control. Refer to ASABE S572.1 droplet size classification 
located at www.ASABE.org. IMPACT application can be made with drop nozzles if the crop canopy prevents 
adequate weed coverage using broadcast application methods.

524-20210218ab IMPACT (Master) Page 8 of 16 
Spray Drift 
Do not apply when weather conditions favor spray drift to adjacent crops and vegetation; injury to sensitive plant 
species can occur if contacted by drift . To avoid spray drift from treated areas, do not make applications when 
wind speeds exceed 10 mph or during periods of temperature inversions. 
 
Use of nozzles that are designed to provide larger droplet sizes will reduce spray drift potential. Agriculturally 
approved drift-reducing additives may also be used with IMPACT in accordance with the product labels. 
 
Aerial Application Methods and Equipment 
 
Uniformly apply with properly calibrated aerial equipment in 3 or more gallons of water per acre. Adequate spray 
volume must be used to provide accurate and uniform distribution of spray particles over the treated area and to 
avoid drift of spray particles to non-target areas. 
 
To avoid injury to sensitive crops from drift, aerial applicators must adhere to the following SPECIAL AERIAL USE 
DIRECTIONS AND PRECAUTIONS. 
• Nozzle height above ground must be a maximum of 10 feet. 
• Nozzles must be pointed towards the rear of the aircraft. The downward angle of the nozzle should not 
be greater than 20 degrees. 
• To minimize wing-tip vortex roll, nozzles or spray boom must not be located any closer to end of wing or 
rotor than three-fourths the distance from the center of the aircraft. 
• Use a maximum spray pressure of 40 psi. 
• A buffer zone must be established between the area to be sprayed and sensitive crops. 
• DO NOT spray when wind velocity is greater than 5 mph or during periods of temperature inversion s. 
Coarse sprays (larger droplets) are less likely to drift. 
 
III. ADDITIVES 
Applications of IMPACT to emerged weeds require the addition of an adjuvant AND a nitrogen fertilizer source to 
achieve optimum control, unless specific directions are given in Section VII. Crop Use Directions – Tank Mixes. When 
using an adjuvant with this product, selecting an adjuvant that meets the standards of the Chemical Producers and 
Distributors Association (CPDA) adjuvant certification program is recommended. See Tables 1 and 2 for Maximum 
Weed Size when determining additive rates specified below. 
 
1. ADJUVANTS: When applying IMPACT alone or in a tank -mix with atrazine, u se either a methylated seed oil 
(MSO) or high surfactant methylated oil concentrate (HSMOC) with IMPACT for best performance across a wide 
range of environmental conditions . MSO or HSMOC must contain a minimum of 1 0% or 40% emulsifiers, 
respectively. Apply either MSO adjuvants at rates of 1.0 to 1.5 gallons per 100 gallons of water (1.0% to 1.5% v/v), 
or HSMOC adjuvants at rates of 2 to 3 quarts per 100 gallons of water (0.5% to 0.75% v/v). Use the full adjuvant 
rate when making an application in arid conditions, or during periods of hot dry weather and to larger weeds. 
 
In tank mixtures with oil-based residual corn herbicides, a reduced rate of MSO at 2 quarts per 100 gallons of water 
(0.5% v/v) or HSMOC at 1 quart per 100 gallons of water (0. 25% v/v) is recommended to minimize potential for 
temporary foliar necrosis in corn. 
 
When tank-mixing IMPACT with surfactant-loaded glyphosate, MSO at rates of 2 to 4 quarts per 100 gallons of 
water (0.5% to 1.0% v/v) or HSMOC at rates of 1 to 2 quarts per 100 gallons of water (0.25% to 0.5% v/v) is 
recommended. 
 
In situations, where glyphosate is used in a tank mixture for grass weeds not labeled for control with Impact, and 
in tank mixtures with any product prohibiting use of MSO or HSMOC or conditions of high temperature and very 
high humidity, COC at 1% v/v or NIS at 0.25% v/v may replace these adjuvants.

524-20210218ab IMPACT (Master) Page 9 of 16 
AND 
 
 2. NITROGEN FERTILIZER SOURCE: Recommended nitrogen based fertilizers include urea ammonium nitrate 
(UAN; 28-32%) at 2.5 gallons per hundred gallons of water (2.5% v/v). Instead of a liquid fertilizer, dry spray grade 
ammonium sulfate (AMS) at 2.0 to 3.0 pounds per acre, or a liquid AMS product delivering 3.4 pounds per gallon 
of AMS, may be used. Use of AMS is strongly recommended as an additive where water hardness (high mineral 
content) is a concern. Use the full AMS rate when making an application in arid conditions, or during periods of hot 
dry weather and to larger weeds. 
 
IV. MIXING ORDER 
Following are mixing order guidelines for IMPACT when tank -mixing with other recommended herbicides and 
components, including spray adjuvants and liquid fertili zers. Maintain tank agitation during the mixing process 
and continue agitation while spraying until the application is completed. In the event that the application is 
stopped and the tank mixture settles, it is critical to agitate the mixture thoroughly before spraying is resumed. 
 
TANK-MIX PREPARATION:
 
1. Fill spray tank ½ to ¾ full with clean water and start agitation. 
2. Add water-soluble PVA packet products, if included, and thoroughly mix until fully dissolved. 
3. Add water-soluble additives, including dry or liquid nitrogen fertilizers such as AMS or UAN. 
4. Add IMPACT herbicide. 
5. Add other water-dispersible products such as dispersible granules, dry flowables, suspension 
concentrates, or liquid flowables. 
6. Add water-soluble products. 
7. Add emulsifiable concentrates, including MSO adjuvants. 
8. Fill the remainder of spray tank with water and ensure thorough mixing of all products. 
 
V. TANK MIX INFORMATION 
IMPACT is recommended to be used sequentially or tank mixed with other herbicides as part of a complete weed 
control program. Tank mix recommendations are for use only in states where the sequential or tank mix product 
and application site is registered. Refer to Crop Use Directions (Section VII) for more details and for specific tank 
mix restrictions. Read and follow the applicable Restrictions and Limitations (Section VI) and Directions for Use on 
all products included in any tank mix. The most restrictive labeling applies to tank mixes. Liquid fertilizer is not 
recommended as a carrier for in-crop applications of IMPACT herbicide in corn. Use only water as a carrier. 
 
VI. RESTRICTIONS AND LIMITATIONS 
• Maximum use rate per year: Do not apply more than 0.044 lbs. of topramezone per acre or the equivalent 
of 2.0 fluid ounces of IMPACT per acre. 
• DO NOT apply IMPACT within 45 days of corn harvest (fresh market sweet corn, silage, fodder, or grain). 
• DO NOT graze or feed treated corn forage, silage, fodder, or grain for at least 45 days after an application 
of IMPACT. 
• DO NOT apply this product through any type of irrigation system. 
 
TABLE 3. ROTATIONAL CROP RESTRICTIONS 
The following rotational crops may be planted after uniformly applying IMPACT at the application rates in corn 
shown in the chart below. Do not plant earlier than the specified interval at the rates shown in the chart below, 
as crop injury could occur. Avoid over -applications by minimizing overlaps of spray swaths and by switching off 
spray boom when turning (end rows). In the event of a crop loss due to weather or other causes, any corn type 
can be replanted at any time following an application of IMPACT herbicide. If IMPACT was tank-mixed with other 
herbicides, the label with the most restrictive replanting and crop rotation restrictions for these herbicides must 
also be followed.

524-20210218ab IMPACT (Master) Page 10 of 16 
 
ROTATIONAL CROP 
ROTATIONAL INTERVAL (MONTHS) 
IMPACT APPLICATION RATE 
(FL OZ PER ACRE) 
0.5 0.75 1.0-2.0 
Corn, sweet corn and popcorn (all types) 0 0 0 
Sugarcane 0 0 0 
Cereal grains (wheat, barley, oats, rye) 3 3 3 
Grass, grown for seed and forage 3 3 3 
Rice 3 3 3 
Alfalfa 9 9 9 
Cotton 9 9 9 
Flax 9 9 9 
Peanut 9 9 9 
Potato 9 9 9 
Sorghum 9 9 9 
Soybean 9 9 9 
Sunflower 9 9 9 
Canola 9 9 18 
Dry Bean (excluding cranberry bean) 9 91 182 
Green Bean (including seed production) 93 93,4 185 
Pea 9 9 182 
Sugar beet 94 94 182 
All Other Crops 18 18 18 
1 18 month interval in MI, MN, MT, ND, SD, WI, and WY. 
2 9 month interval in ID, OR, and WA. 
3 18 month interval in ID, UT, and in area East of Cascade Mountains in OR and WA. 
4 18 month interval in CO, MI, MN, MT, NE (Panhandle counties), ND, SD, WI, and WY. 
5 9 month interval in area West of Cascade Mountains in OR and WA. 
 
VII. CROP USE DIRECTIONS 
CORN (Field, Pop, Seed and Sweet) 
IMPACT can be selectively applied to emerged weeds in all corn types including conventional hybrids and all 
hybrids which contain herbicide-resistant traits. In addition, IMPACT may be applied on inbred lines used in field 
corn, popcorn and sweet corn seed production. Refer to seed company recommendations before application 
of IMPACT on inbred lines. 
 
IMPACT may be used in tank mixtures or sequential applications with other herbicides that are registered for 
use in corn. If IMPACT is tank mixed with other products, follow the label restrictions (including adjuvant 
recommendations) for the most restrictive of the tank mix products. See Section III for adjuvant 
recommendations. 
 
For best performance, a tank-mixture of IMPACT with atrazine at 0.25 to 1.5 pound per acre is recommended. 
Lower atrazine rates (0.25 to 0.5 pound per acre) provide enhanced control (takedown) of emerged weeds, 
while rates of 1.0 pound per acre and higher provide additional soil residual control and potentially a second 
effective mode of action to manage weed resistance.

524-20210218ab IMPACT (Master) Page 11 of 16 
 
 
TABLE 4. TANK MIXTURES OR SEQUENTIAL APPLICATIONS 
IMPACT may be tank-mixed or applied sequentially with one or more of, but not limited to, the following corn 
herbicides: 
Brand Name (EPA Reg. No.) Active Ingredient 
AAtrex® 4L herbicide (EPA Reg. No. 100-497) Atrazine 
Accent® Q herbicide (EPA Reg. No. 352-773) Nicosulfuron 
Aim® EC herbicide (EPA Reg. No. 279-3241) Carfentrazone 
Anthem® ATZ herbicide (EPA Reg. No. 279-3449) Atrazine/pyroxasulfone/fluthiacet-methyl 
Anthem® herbicide (EPA Reg. No. 279-3450) Pyroxasulfone/fluthiacet-methyl 
Basagran® herbicide (EPA Reg. No. 66330-413) Bentazon 
Bicep II Magnum® (EPA Reg. No. 100-817) S-metolachlor/atrazine 
Breakfree® NXT ATZ herbicide (EPA Reg. No. 352-893) Acetochlor/atrazine 
Breakfree® NXT herbicide (EPA Reg. No. 352-894) Acetochlor 
Buctril® 4EC herbicide (EPA Reg. No. 264-540) Bromoxynil 
Cadet® herbicide (EPA Reg. No. 279-3338) Fluthiacet-methyl 
Cinch ATZ herbicide (EPA Reg. No. 352-624) S-metolachlor/atrazine 
Cinch® herbicide (EPA Reg. No. 352-625) S-metolachlor 
Degree Xtra® herbicide (EPA Reg. No. 524-511) Acetochlor/atrazine 
DiFlexx® herbicide (EPA Reg. No. 264-1173) Dicamba 
Dual II Magnum® (EPA Reg. No. 100-818) S-metolachlor 
Durango® DMA herbicides (EPA Reg. No. 62719-556) Glyphosate 
Enlist Duo™ herbicide1 (EPA Reg. No. 62719-649) 2,4-D choline/glyphosate 
Enlist One® herbicide1 (EPA Reg. No. 62719-695) 2,4-D choline 
G-Max Lite™ herbicide (EPA Reg. No. 7969-200) Dimethenamid-P/atrazine 
Guardsman Max® (EPA Reg. No. 7969-192) Dimethenamid-P/atrazine 
Harness® herbicide (EPA Reg. No. 524-473) Acetochlor 
Harness® Xtra herbicide (EPA Reg. No. 524-480) Acetochlor/atrazine 
Hornet® WDG herbicide (EPA Reg. No. 62719-315) Clopyralid/flumetsulam 
Impact CORE® herbicide (EPA Reg. No. 5481-648) Acetochlor/topramezone 
ImpactZ® herbicide (EPA Reg. No. 5481-612) Atrazine/topramezone 
Keystone® NXT (EPA Reg. No. 62719-671) Acetochlor/atrazine 
Liberty® 280 SL herbicide (EPA Reg. No. 7969-448) Glufosinate-ammonium 
Outlook® herbicide (EPA Reg. No. 7969-156) Dimethenamid-P 
Permit® herbicide (EPA Reg. No. 81880-2-10163) Halosulfuron 
Prowl® H2O herbicide (EPA Reg. No. 241-418) Pendimethalin 
Resource® herbicide (EPA Reg. No. 59639-82) Flumiclorac 
Roundup PowerMAX® (EPA Reg. No. 524-549) Glyphosate 
Sinate® herbicide (EPA Reg. No. 5481-637) Glufosinate-ammonium/topramezone 
Status® herbicide (EPA Reg. No. 7969-242) Dicamba/Diflufenzopyr 
Steadfast® Q herbicide (EPA Reg. No. 352-774) Nicosulfuron/rimsulfuron 
Stinger® herbicide1 (EPA Reg. No. 62719-73) Clopyralid 
Surpass® NXT (EPA Reg. No. 62719-672) Acetochlor 
Warrant® herbicide (EPA Reg. No. 524-591) Acetochlor 
Zidua SC herbicide (EPA Reg. No. 7969-374) Pyroxasulfone

524-20210218ab IMPACT (Master) Page 12 of 16 
Brand Name (EPA Reg. No.) Active Ingredient 
Zidua® herbicide (EPA Reg. No. 7969-338) Pyroxasulfone 
1Use of additives specified in Section III above are either not specified and/or contain a cautionary statement on 
labels of these herbicides due to potential for crop injury, and should not be used in tank mixtures with IMPACT. 
 
VIII. BETWEEN CROP APPLICATION 
 Fallow Weed Management 
IMPACT may be used as a foliar application to control emerged broadleaf and grass weeds at any time of the 
year during the period following crop harvest and before the following crop is planted. The following crop may 
be planted after observing the required interval as defined in the Rotational Crop Restrictions section (Table 3). 
Several cover crops used to manage soil erosion, soil fertility, or soil moisture, and which will not be used for 
grazing or harvest, have shown tolerance to IMPACT and may be planted a minimum of 28 days following 
between-crop applications. Consult AMVAC representatives or university extension personnel for information 
on tolerance of specific cover crops. 
Application Rate and Timing 
Apply IMPACT as a broadcast spray up to a rate of 2.0 fl oz/A. Best product performance is obtained when 
weeds are small and actively growing. Thorough coverage of existing weeds is essential, and higher spray 
volume may be needed for best performance. Sequential application may be made with a minimum of 14 days 
between applications, but DO NOT exceed the maximum cumulative (both corn and between crop application 
uses) amount of 2.0 fl oz/A of IMPACT per year. 
 
IX. SEQUENTIAL HERBICIDE COMBINATIONS AND USES 
In addition to the control of many emerged broadleaf weeds, IMPACT controls or suppresses the growth of several 
emerged grass weed species. To target a broader spectrum of emerged grasses, IMPACT should be used as a 
sequential treatment following a residual grass herbicide, or premixtures of these products containing Group 3 or 
15 herbicides such as Prowl ® H2O, Bicep II Magnum, Dual II Magnum ®, Harness®, Harness Xtra, or Zidua®. (EPA 
registration numbers can be found in Section VII.) IMPACT can also be used in sequential programs with registered 
burndown herbicides. 
 
When IMPACT
 is used in sequential applications prior to or following other products containing Group 27 
herbicides such as isoxaflutole (e.g., Corvus® (EPA Reg. No. 264-1066), Balance® Flexx™ (EPA Reg. No. 264-1067)), 
mesotrione (e.g., Callisto® (EPA Reg. No. 100-1131), Lexar® EZ (EPA Reg. No. 100-1414), Lumax® EZ (EPA Reg. No. 
100-1442)), or tembotrione (e.g., Laudis® (EPA Reg. No. 264-860), Capreno®(EPA Reg. No. 264-1063)), use of a tank 
mix partner with a different effective mode of action is recommended at full use rate to reduce risk of selection 
for HPPD resistant weed biotypes.

524-20210218ab IMPACT (Master) Page 13 of 16 
 
X. SCIENTIFIC NAMES OF WEEDS SPECIFIED IN THIS LABEL 
 
Common Name Scientific Name Common Name Scientific Name 
Amaranth, Palmer Amaranthus palmeri Morningglory, ivyleaf Ipomoea hederacea 
Amaranth, Powell 
Bindweed, Field 
Amaranthus powellii 
Convolvulus arvensis 
 Mustard, wild Sinapis arvensis 
Barnyardgrass 
Buckwheat, Wild 
Echinochloa crus-galli 
Fallopia convolvulus 
 Nightshade, Black Solanum nigrum 
Burcucumber Sicyos angulatus Nightshade, Eastern Solanum ptycanthum 
Canola, Volunteer Brassica spp. Black Nightshade, Hairy Solanum sarrachoides 
Carpetweed Mollugo verticillata Panicum, Fall Panicum dichotomiflorum 
Chickweed, Common Stellaria media Panicum, Texas Panicum texanum 
Crabgrass, Large Digitaria sanguinalis Pigweed, Prostrate Amaranthus blitoides 
Crabgrass, Smooth Digitaria ischaemum Pigweed, Redroot Amaranthus retroflexus 
Cocklebur, Common Xanthium strumarium Pigweed, Smooth Amaranthus hybridus 
Cupgrass, Woolly Eriochloa villosa Pigweed, Tumble Amaranthus album 
Dandelion 
Devil’s-claw 
Taraxacum officinale 
Proboscidea louisianica 
 Purslane, Common Portulaca oleracea 
Foxtail, Giant Setaria faberi Pusley, Florida Richardia scabra 
Foxtail, Green Setaria viridis Ragweed, Common Ambrosia artemisiifolia 
Foxtail, Yellow Setaria glauca Ragweed, Giant Ambrosia trifida 
Galinsoga, Hairy Galinsoga ciliata Sandbur, Field Cenchrus longispinus 
Goosegrass Eleusine indica Shattercane Sorghum bicolor 
Henbit Lamium amplexicaule Shepherd’s-purse Capsella bursa-pastoris 
Jimsonweed Datura stramonium Sida, Prickly Sida spinosa 
Johnsongrass Sorghum halepense Signalgrass, Broadleaf Brachiaria platyphylla 
Kochia Kochia scoparia Smartweed, Pennsylvania Polygonum pensylvanicum 
Ladysthumb Polygonum persicaria Sunflower, Wild (common) Helianthus annuus 
Lambsquarters, Common 
Lettuce, Prickly 
Chenopodium album 
Lactuca serriola 
 Thistle, Canada Cirsium arvense 
Mallow, Common Malva neglecta Thistle, Russian Salsola iberica 
Mallow, Venice Hibiscus trionum Velvetleaf Abutilon theophrasti 
Marestail (Horseweed) Conyza canadensis Waterhemp, Common Amaranthus rudis 
Millet, Wild-Proso Panicum miliaceum Waterhemp, Tall Amaranthus tuberculatus 
Morningglory, entireleaf Ipomoea hederacea 
 
STORAGE AND DISPOSAL 
Do not contaminate water, food or feed by storage, disposal, or cleaning of equipment. 
PESTICIDE STORAGE: Store product in original container only. Store product in a cool, dry place. Do not store 
this product under wet conditions. If this product has been stored where freezing temperatures have occurred, 
agitate or mix contents of container well before use. Avoid cross-contamination with other pesticides. 
PESTICIDE DISPOSAL: Wastes resulting from the use of this product must be disposed of on site or at an 
approved waste disposal facility. Improper disposal of excess pesticide, spray mix, or rinsate is a violation of 
federal law. If these wastes cannot be disposed of according to label instructions, contact state agency 
responsible for pesticide regulation or the Hazardous Waste representative at the nearest EPA Regional Office 
for guidance. 
CONTAINER HANDLING: Nonrefillable container. Do not reuse or refill this container. Triple rinse or pressure 
rinse container (or equivalent) promptly after emptying.; then offer for recycling, if available, or reconditioning, 
if appropriate, or puncture and dispose of in a sanitary landfill, or by incineration, or by other procedures 
approved by state and local authorities. 
Triple rinse containers small enough to shake (capacity ≤ 5 gallons) as follows: Empty the remaining contents

524-20210218ab IMPACT (Master) Page 14 of 16 
into application equipment or a mix tank and drain for 10 seconds after the flow begins to drip. Fill the container 
¼ full with water and recap. Shake for 10 seconds. Pour rinsate into application equipment or a mix tank and 
store rinsate for later use or disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure 
two more times. 
Triple rinse containers too large to shake (capacity > 5 gallons) as follows: Empty the remaining contents into 
application equipment or a mix tank. Fill the container 1/4 full with water. Replace and tighten closures. Tip 
container on its side and roll it back and forth, ensuring at least one complete revolution, for 30 seconds. Stand 
the container on its end and tip it back and forth several times. Turn the container over onto its other end and 
tip it back and forth several times. Empty the rinsate into application equipment or a mix tank, or store rinsate 
for later use or disposal. Repeat this procedure two more times. 
Pressure rinse as follows: Empty the remaining contents into application equipment or mix tank and continue 
to drain for 10 seconds after the flow begins to drip. Hold container upside down over application equipment or 
mix tank, or collect rinsate for later use or disposal. Insert pressure rinsing nozzle in the side of the container and 
rinse at about 40 PSI for at least 30 seconds. Drain for 10 seconds after the flow begins to drip. 
Then offer for recycling if available or reconditioning, or puncture and dispose of in a sanitary landfill, or by 
incineration, or if allowed by state and local authorities, by burning. If burned stay out of smoke. 
 
 
LIMITED WARRANTY AND DISCLAIMER 
The manufacturer warrants (a) that this product conforms to the chemical description on the label; and (b) that 
the directions, warnings, and other statements on this label are based upon responsible experts' evaluations of 
reasonable tests of effectiveness, of toxicity to laboratory animals and to plants and residues on food crops, and 
upon reports of field experience. Tests have not been made on all varieties of food crops and plants, or in all states 
or under all conditions. THIS WARRANTY DOES NOT EXTEND TO THE USE OF THIS PRODUCT CONTRARY TO LABEL 
INSTRUCTIONS, OR UNDER CONDITIONS NOT REASONABLY FORESEEABLE. 
THERE ARE NO EXPRESS WARRANTIES OTHER THAN THOSE SET FORTH HEREIN. TO THE EXTENT CONSISTENT 
WITH APPLICABLE LAW, THE MANUFACTURER NEITHER MAKES NOR INTENDS, NOR DOES IT AUTHORIZE ANY 
AGENT OR REPRESENTATIVE, TO MAKE ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, AND IT EXPRESSLY 
EXCLUDES AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR 
PURPOSE, OR ANY WARRANTY OF QUALITY OR PERFORMANCE. THIS WARRANTY DOES NOT EXTEND TO, AND 
THE BUYER SHALL BE SOLELY RESPONSIBLE FOR, ANY AND ALL LOSS OR DAMAGE WHICH RESULTS FROM THE 
USE OF THIS PRODUCT IN ANY MANNER WHICH IS INCONSISTENT WITH THE LABEL DIRECTIONS, WARNINGS OR 
CAUTIONS. 
TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, BUYER'S EXCLUSIVE REMEDY AND MANUFACTURER'S OR 
SELLER'S EXCLUSIVE LIABILITY FOR ANY AND ALL CLAIMS, LOSSES, DAMAGES, OR INJURIES RESULTING FROM 
THE USE OR HANDLING OF THIS PRODUCT, WHETHER OR NOT BASED IN TORT, CONTRACT, NEGLIGENCE, STRICT 
LIABILITY IN TORT OR OTHERWISE, SHALL BE LIMITED, AT THE MANUFACTURER'S OPTION, TO REPLACEMENT 
OF, OR THE REPAYMENT OF THE PURCHASE PRICE FOR, THE QUANTITY OF PRODUCT WITH RESPECT TO WHICH 
DAMAGES ARE CLAIMED. TO THE EXTENT CO NSISTENT WITH APPLICABLE LAW, MANUFACTURER OR SELLER 
SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR 
HANDLING OF THIS PRODUCT. 
AMVAC offers this product, and Buyer accepts it, subject to the foregoing Limited Warranty which may be varied 
only by agreement in writing signed by an authorized representative of AMVAC.
 
 
© 2026 All Rights Reserved. AMVAC Chemical Corporation is a wholly owned subsidiary of American Vanguard 
Corporation. AMERICAN VANGUARD, AMVAC, HORNET, IMPACT CORE, IMPACTZ, SINATE, and their respective logos 
are trademarks owned by AMVAC Chemical Corporation. All other trademarks are the property of their respective 
owners. 
© 2020 AMVAC Chemical Corporation is a wholly owned subsidiary of American Vanguard Corporation. All Rights 
Reserved. AMERICAN VANGUARD, AMVAC, Hornet, Impact CORE, ImpactZ, Sinate, and their respective logos are 
trademarks owned by AMVAC Chemical Corporation. CHEMTREC is a service mark of the American Chemistry

524-20210218ab IMPACT (Master) Page 15 of 16 
Council, Inc. Basagran, G-Max Lite, Guardsman Max, Liberty, Outlook, Prowl H2O, Status and Zidua are 
trademarks of BASF Corporation and its affiliates. Balance Flexx, Buctril, Capreno, Corvus, Laudis, and DiFlexx are 
trademarks of Bayer and its affiliates. Durango, Enlist, Enlist Duo, Enlist One, Keystone, Stinger, and Surpass are 
trademarks of Dow AgroSciences LLC. Accent, Accent Q, Breakfree, Cinch, Steadfast, and Steadfast Q are 
trademarks of E.I. du Po nt de Nemours and Company. Aim, Anthem, and Cadet are trademarks of FMC 
Corporation. Degree, Degree Xtra, Harness, Harness Xtra, Roundup PowerMAX, and Warrant are trademarks of 
Monsanto Technology, LLC. Aatrex, Bicep II Magnum, Callisto, Dual II Magnum, Lexar, and Lumax are trademarks 
of Syngenta and its affiliates. Permit is a trademark of Nissan Chemical Corp. Resource is a trademark of Valent 
U.S.A. Corporation. 
 
[{optional marketing statements}] 
 
• The most flexible solution to deliver effective control of grasses and broadleaf weeds early post in corn. 
• Excellent corn safety, wide application window and flexibility with other products — no restrictions with 
EC tank-mix products, safety with soil and foliar insecticides and use on all corn types makes IMPACT 
Herbicide one of the most versatile herbicides available for your corn acres. 
• The Standard in Corn Safety® 
• Excellent corn safety 
• Offers The Standard in Corn Safety® in all types of corn 
• Flexible application window 
• HPPD herbicides have similar behavior in terms of efficacy under cooler temperature regimes. 
• No label restrictions with either soil applied or foliar insecticides registered for use in corn 
• Does not kill established perennial grasses in waterways and terraces – providing ease of application 
• Tough on weeds. Not corn. 
• Tough on weeds & grass. Not corn. 
• IMPACT Herbicide delivers the flexibility and power for effective postemergence control of grass and 
broadleaf weeds in all types of corn. 
• Unleash the power of IMPACT Herbicide 
• Control yield-robbing grass and broadleaf weeds in all types of corn – with excellent safety. 
• IMPACT Herbicide brings the power you need to control tough weeds including glyphosate-resistant 
species. 
• Not all HPPDs are created equal regarding safety to corn. Do not risk crop injury and go with IMPACT 
Herbicide. 
• Results show exceptional safety of IMPACT in corn 
• Even at Exaggerated Rates, Excellent Corn Development and Yield Was Observed 
• Wide application window keeps weeds under control even during unexpected weather. 
• Flexible Application Window - Work around uncontrollable spring weather. 
• IMPACT can be used with any soil or foliar applied insecticides registered for use on corn. 
• Flexible tank-mix partner with traditional grass or broadleaf herbicide premixes providing control of 
emerged grass and broadleaf weeds plus residual control. 
• Safety margin of IMPACT in all types of corn is unequaled by competitive HPPD herbicides. 
• Flexible tank-mix partner with traditional grass or broadleaf herbicide premixes. 
• Can be tank-mixed with S-metolachlor, metolachlor and acetochlor EC formulations. 
• Can be tank-mixed with atrazine, glyphosate, glufosinate and residual herbicides such as S-metolachlor, 
metolachlor and acetochlor EC formulations. 
• Not all HPPDs are created equal for grass control. IMPACT delivers consistent grass control with or 
without glyphosate. 
• Controls tough grass and broadleaf weeds without glyphosate 
• Use IMPACT and beat yield robbing grass and broadleaf weeds to the punch without glyphosate 
• Proven control of grasses without the need to tank-mix glufosinate or glyphosate. 
• Unleash the power of IMPACT herbicides on resistant weeds

524-20210218ab IMPACT (Master) Page 16 of 16 
• Control tough glyphosate-resistant weeds and yield-robbing grasses with the knock-down power 
of IMPACT Herbicides. 
• Broad-Spectrum Weed Control. 
• Make an IMPACT on Resistant Weeds 
• IMPACT Herbicides provide proven power against resistant weeds. 
• Resistant Weeds Can’t Stand Up to IMPACT Herbicides 
• Control yield-robbing grass and broadleaf labeled weeds in all types of corn – with application flexibility. 
• IMPACT Brand Herbicides bring the power you need to control tough grass and broadleaf weeds including 
glyphosate-resistant species. 
• The proven power for postemergence control of grass and broadleaf weeds including glyphosate-
resistant biotypes in corn. 
• IMPACT controls glyphosate-resistant broadleaf weeds. 
• IMPACT controls emerged grass and broadleaf weeds to complement the residual partner. 
• Powerful, flexible and proven control of tough grass and broadleaf weeds in corn. 
• IMPACT brings the power you need to control tough grass and broadleaf weeds including glyphosate-
resistant species. 
• IMPACT Brand Herbicides deliver the flexibility and power for effective postemergence control of grass 
and broadleaf weeds in corn. 
• Proven control and an exceptional partner for high-performance herbicide programs. 
• Convenient, easy-to-use formulation to get growers in the field fast 
• Powerful, proven, flexible weed control in all corn 
• Powerful protection on all types of corn. 
• IMPACT Herbicide one of the most versatile herbicides available for your corn acres. 
• A Flexible Solution to Deliver Effective Early Postemergence Control of Grass and Broadleaf Weeds in 
Corn 
• Flexibility That Fits… IMPACT Herbicide 
• The safe, more flexible solution to weed control in all corn