crop-chem-docs/corpus/bayer/harness-max.md

# Harness Max Herbicide

- **Product class:** herbicide
- **EPA Reg No:** 524-636
- **Active ingredients:** Acetochlor, Mesotrione
- **Source:** https://www.cropscience.bayer.us/crop-protection/herbicide/harness-max-herbicide
- **Label PDF:** https://www.cs-contentapi.bayer.com/content/dam/regional-folders/na/united-states/english/staging/e2e-migration-folder/cp-pdps/agrian-pdfs/product-labels/Harness_MAX_Bayer_Label1bn.pdf

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US62211987E (170405E) HARNESS MAX NET CONTENTS: MINI BULK ECL
COLOR: CMYK
DATE: 05/15/2025
(Label Coordinator: Mark Schmidt)
HERBICIDE
US62211987E   240919E    05/25
Harness® MAX Herbicide is a broad-spectrum preemergence and
postemergence herbicide for weed control in field corn, production seed
corn, and yellow popcorn.
ACTIVE INGREDIENT:
* Acetochlor, 2-chloro-N-ethoxymethyl-N-(2-ethyl-6-methylphenyl) acetamide

....  39.1%
** Mesotrione, 2-[4-(methysulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione

..........   3.7%
OTHER INGREDIENTS:

............................................................................................   57.2%
100.0%
* Contains 422 g rams of the active ingredient acetochlor per liter or 3.52 pounds per U.S. gallon.
**
 Contains 40 g
rams of the active ingredient mesotrione per liter or 0.33 pounds per U.S. gallon.
For a list of patents, if any, covering this product or its use, please go to
https://cs.bayerpatents.bayer.com.
Other Patents Pending. No license granted under any non-U.S. patent(s).
EPA Reg. No. 524-636
KEEP OUT OF REACH OF CHILDREN
CAUTION
See inside for Complete Directions for Use.
COMPLETE DIRECTIONS FOR USE
Not for Sale, Sale into, Distribution and/or Use in Nassau and Suffolk Counties of
New York State.
FOR PRODUCT INFORMATION OR ASSISTANCE IN USING THIS PRODUCT,
CALL TOLL-FREE, 1-800-332-3111
IN CASE OF AN EMERGENCY INVOLVING THIS HERBICIDE PRODUCT, OR FOR
MEDICAL ASSISTANCE, CALL COLLECT, DAY OR NIGHT, 314-694-4000
Packed for:
Bayer CropScience LP
800 N. Lindbergh Blvd.
St. Louis, Missouri 63167 USA
 Harness is a registered trademark of Bayer Group.
©2025 Bayer Group. All rights reserved.
ACETOCHLOR
MESOTRIONE
HERBICIDE
HERBICIDE
15
27GROUP
GROUP
6.875”
7.125”
6.875”
6.625”
COPY AREA
COPY AREA

1
Read the entire label before using this product.
Use only according to label instructions.
Read “LIMIT OF WARRANTY AND LIABILITY” before buying or using.
Table of Contents
1.0 INGREDIENTS .......................................................................1
2.0 IMPORTANT PHONE NUMBERS ............................................ 1
3.0 PRECAUTIONARY STATEMENTS ........................................... 1
 3.1 Hazards to Humans and Domestic Animals .............1
 3.2 Environmental Hazards ............................................1
 3.3 Physical or Chemical Hazards ................................. 2
4.0 DIRECTIONS FOR USE .............................................................2
 4.1 Storage and Disposal ...............................................2
5.0 PRODUCT INFORMATION...................................................... 2
 5.1 Use Restrictions .......................................................2
 5.2 Application Directions: .............................................3
 5.3 Cultivation Information ............................................ 3
 5.4 Maximum Annual Use Rates .................................... 3
 5.5 Rotational crops .......................................................3
 5.6 Replanting ................................................................ 4
6.0 WEED RESISTANCE MANAGEMENT .....................................4
7.0 SOIL TEXTURE ......................................................................4
8.0 MIXING, SPRAYING AND HANDLING INSTRUCTIONS ...........4
 8.1 Equipment Cleaning and Repair .............................. 4
 8.2 Sprayer Compatibility .............................................. 4
 8.3 Standard Sprayable Fluid Fertilizer Compatibility Test ......5
9.0 APPLICATION SYSTEMS .......................................................5
 9.1 Ground Broadcast Treatment ................................... 5
 9.2 Ground Band Treatment ........................................... 5
 9.3 Application With Dry Bulk Fertilizer ......................... 5
10.0 WEEDS CONTROLLED ...........................................................6
 10.1 Preemergence ......................................................... 6
 10.2 Postemergence ........................................................ 6
11.0 PREPLANT SURFACE, PREPLANT INCORPORATED, AT-PLANTING
 OR PREEMERGENCE APPLICATIONS IN CORN ...............................7
 11.1 Harness ® MAX Herbicide Use Rates ........................ 7
 11.2 Application Methods ................................................7
 11.3 Tank Mixtures ..........................................................7
 11.4 Premergence Spray Adjuvants ................................. 7
12.0 POSTEMERGENCE APPLICATION IN CORN ........................... 8
 12.1 Harness MAX Herbicide Use Rates .......................... 8
 12.2 Application Methods ................................................8
 12.3 Tank Mixtures ..........................................................8
  12.3.1 Tank mixing with Roundup® agricultural herbicides
   postemergence on corn containing Roundup Ready® Corn 2
   Technology ................................................................ 8
  12.3.2 Tank mixing with Liberty® herbicide
  postemergence on glufosinate-resistant corn .........8
 12.4 Hard To Control Weeds ............................................. 8
 12.5 Postemergence Spray Adjuvants ............................. 9
13.0 RESTRICTIONS AND PRECAUTIONS FOR ALL CORN USES .........9
14.0 LIMIT OF WARRANTY AND LIABILITY .................................. 9
1.0 INGREDIENTS
ACTIVE INGREDIENT:
* Acetochlor, 2-chloro-N-ethoxymethyl-N-(2-ethyl-6-methylphenyl)
acetamide .......................................................................... 39.1%
**Mesotrione, 2-[4-(methysulfonyl)-2-nitrobenzoyl]-1,3-
   cyclohexanedione ..............................................................  3.7%
OTHER INGREDIENTS:..........................................................   57.2%
 100.0%
*Contains 422 grams of the active ingredient acetochlor per liter
  or 3.52 pounds per U.S. gallon.
**Contains 40 grams of the active ingredient mesotrione per liter
   or 0.33 pounds per U.S. gallon.
2.0 IMPORTANT PHONE NUMBERS
1. FOR PRODUCT INFORMATION OR ASSISTANCE IN USING THIS
PRODUCT, CALL TOLL-FREE, 1-800-332-3111
2. IN CASE OF AN EMERGENCY INVOLVING THIS HERBICIDE
PRODUCT, OR FOR MEDICAL ASSISTANCE, CALL COLLECT,
DAY OR NIGHT, 314-694-4000
3.0 PRECAUTIONARY STATEMENTS
3.1 Hazards to Humans and Domestic Animals
KEEP OUT OF REACH OF CHILDREN
CAUTION
Harmful if swallowed. May cause allergic skin reaction.
FIRST AID:  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
the poison control center or doctor.
• Do not give anything by mouth to an
unconscious person.
IF IN EYES • Hold eye open and rinse slowly and gently
with water for 15 to 20 minutes.
• Remove contact lenses, if present, after the
first 5 minutes then continue rinsing eye.
• Call a poison control center or doctor for
treatment advice.
IF ON SKIN
OR CLOTHING
• Take off contaminated clothing.
• Rinse skin immediately with plenty of water
for 15 to 20 minutes.
• Call a poison control center or doctor for
treatment advice.
• Sensitized persons should avoid further
contact and reuse of contaminated clothing.
• Have the product container or label with you when calling a
poison control center or doctor, or going for treatment.
• You can also call 1-800-334-7577, collect, day or night, for
emergency medical treatment information.
• This product is identified as Harness MAX Herbicide, EPA
Registration No. 524-636.
DOMESTIC ANIMALS: This product is considered to be relatively
nontoxic to dogs and other domestic animals; however, ingestion
of this product or large amounts of freshly sprayed vegetation may
result in temporary gastrointestinal irritation (vomiting, diarrhea,
colic, etc.). If such symptoms are observed, provide the animal
with plenty of fluids to prevent dehydration. Call a veterinarian if
symptoms persist for more than 24 hours.
Personal Protective Equipment (PPE)
Applicators and other handlers must wear: long-sleeved shirt and
long pants, socks and shoes, and chemical-resistant gloves made
of any waterproof material (barrier laminate, butyl rubber ≥ 14 mils,
natural rubber ≥ 14 mils, neoprene rubber ≥ 14 mils, nitrile rubber
≥ 14 mils, polyethylene, polyvinyl chloride (PVC) ≥ 14 mils, or viton
≥14 mils).
Follow manufacturer’s instructions for cleaning/maintaining PPE
(Personal Protective Equipment). If there are no instructions for
washables, use detergent and hot water. Keep and wash PPE
separately from other laundry.
Engineering 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.
IMPORTANT: When reduced PPE is worn because a closed system
is being used, handlers must be provided all PPE specified
above for “applicators and other handlers” and have such PPE
immediately available for use in an emergency, including a spill
or equipment breakdown.
User Safety Recommendations:
Users should:
• Wash hands thoroughly with soap and water after handling
and 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 PPE immediately after handling this product. Wash the
outside of gloves before removing. As soon as possible, wash
thoroughly and change into clean clothing.
3.2 Environmental Hazards
NON-TARGET ORGANISM ADVISORY STATEMENT: This product is
toxic to plants and may adversely impact the forage and habitat
of non-target organisms, including pollinators, in areas adjacent
to the treated site. Protect the forage and habitat of non-target
organisms by following label directions intended to minimize
spray drift.
SURFACE WATER ADVISORY: This product may impact surface
water quality due to runoff of rainwater. This is especially true
for poorly draining soils and soils with shallow ground water. This
product is classified as having high potential for reaching surface
water via runoff for several weeks 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
acetochlor 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.
This product is toxic to fish. 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 cleaning
equipment or disposing of equipment wash waters and rinsate.
GROUNDWATER ADVISORY: Acetochlor and Mesotrione are known
to leach through soil into groundwater under certain conditions as
a result of label use. This chemical may leach into groundwater if
used in areas where soils are permeable, particularly where the
water table is shallow.
This product has properties that may result in surface water
contamination via dissolved runoff and runoff erosion. Practices
should be followed to minimize the potential for dissolved runoff
and/or runoff erosion. Do not apply when weather conditions
favor drift.
This chemical demonstrates the properties and characteristics
associated with chemicals detected in ground water. The use of
this chemical in areas where soils are permeable, particularly
where the ground water is shallow, may result in ground water
contamination.
NOTICE; Read the entire Directions for Use and Conditions of Sale
and Limitations of Warranty and Liability before buying or using
this product
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3.3 Physical or Chemical Hazards
Spray solutions of this product may be mixed, stored and applied using
stainless steel, fiberglass, plastic or plastic-lined steel containers.
DO NOT MIX, STORE OR ALLOW THIS PRODUCT TO COME IN CONTACT
WITH AN OXIDIZING OR REDUCING AGENT INCLUDING GALVANIZED
STEEL OR UNLINED STEEL (EXCEPT STAINLESS STEEL) CONTAINERS
OR SPRAY TANKS. This product or spray solutions of this product
react with such oxidizing agents to produce hydrogen gas, which
can form a highly combustible gas mixture. This gas mixture could
flash or explode if ignited by open flame, spark, welder’s torch, lighted
cigarette or other ignition source and cause serious personal injury.
4.0 DIRECTIONS FOR USE
It is a violation of Federal law to use this product in any manner
inconsistent with its labeling. This product can only be used in
accordance with the Directions for Use on this label. 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 regulations.
Not for Sale, Sale Into, Distribution and/or Use in Nassau and
Suffolk Counties of New York State.
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. Exception: if
the product is soil-injected or soil-incorporated, the Worker
Protection Standard, under certain circumstances, allows
workers to enter the treated area if there will be no contact with
anything that has been treated.
PPE required for early entry to treated areas that is permitted
under the Worker Protection Standard and that involves contact
with anything that has been treated, including plants, soil, or
water, is: coveralls, shoes plus socks and chemical-resistant
gloves made of any waterproof material.
4.1 Storage and Disposal
Do not allow this product to contaminate water, food, or feed by
storage and disposal.
PESTICIDE STORAGE: Store pesticides away from food, pet food,
feed, seed, fertilizers, and veterinary supplies. Keep container
closed to prevent spills and contamination.
PESTICIDE DISPOSAL: To avoid wastes, use all material in
this container, including rinsate, by application in accordance
with label directions. If wastes cannot be avoided, offer
remaining product to a waste disposal facility or pesticide
disposal program. Such programs are often run by state or
local governments or by industry. All disposal must be in
accordance with applicable federal, state and local regulations
and procedures.
CONTAINER HANDLING AND DISPOSAL: CONTAINER HANDLING
AND DISPOSAL STATEMENT AND REFILLING LIMITATION FOR
NONREFILLABLE RIGID PLASTIC 30-GALLON CONTAINER AND
OTHER NONREFILLABLE CONTAINERS OF GREATER THAN
5-GALLON CAPACITY
Nonrefillable container. Do not reuse or refill this container. Triple
rinse or pressure rinse (or equivalent) this container promptly after
emptying. Triple rinse as follows: Empty the remaining contents
into application equipment or mix-tank. Fill the container ¼ full
with water. Replace and tighten closures. Tip the container on its
side and roll it back and forth for 30 seconds, ensuring at least
one complete revolution. 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 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. Place container so that it can drain directly into application
equipment or mix-tank while rinsing, or collect rinsate for later use or
disposal. Insert pressure rinsing nozzle into the side of the container
and rinse at about 40 PSI for at least 30 seconds. Continue to drain
for 10 seconds after the flow begins to drip. Then offer the container
for recycling, if available. To find the nearest collection site, contact
your chemical dealer or Bayer CropScience LP at 1-866-99BAYER
(1-866-992-2937). If recycling is not available, dispose of in
accor
dance with federal, state and local regulations and procedures,
which may include puncturing the properly rinsed container and
disposing in a sanitar
y landfill.
CONTAINER HANDLING AND DISPOSAL STATEMENT AND
REFILLING LIMITATION FOR ALL REFILLABLE CONTAINERS,
EXCEPT TRANSPORT VEHICLES
Refillable container. Refill this container with pesticide only.
Do not reuse this container for any other purpose. Cleaning
this container before refilling is the responsibility of the refiller.
Cleaning this container before final disposal is the responsibility
of the person disposing of the container. To clean this 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 this
container for recycling, if available. To obtain information about
recycling refillable containers, contact Bayer CropScience LP at
1-866-99BAYER (1-866-992-2937).
5.0 PRODUCT INFORMATION
Harness MAX Herbicide controls the weeds listed in the “WEEDS
CONTROLLED” section of this label. Harness MAX Herbicide
may be applied preemergence and postemergence in field corn,
production seed corn, and yellow popcorn.
Read and carefully observe precautionary statements and all
other information appearing on the labeling of all products used in
mixtures and sequential treatments. This label provides specified
treatment rates for this product alone and with tank mixtures.
Applications which are not consistent with recommendations in
this label may result in unsatisfactory weed control, injury to crops,
persons, or animals, or other unintended consequences. Refer to
specific product labels for crop rotation restrictions and cautionary
statements of all products used in these tank mixtures, including
precautions on soil pH, sensitive varieties, minimum re-cropping
interval, and rotational guidelines.
SPRAY DRIFT MANAGEMENT
Mandatory Spray Drift Requirements
DO NOT aerially apply this product unless otherwise directed
by approved supplemental labeling in possession of the user at
the time of application.
Ground Boom Applications
• Do not r
elease spray at a height of greater than 3 feet above
the ground or canopy.
• App
licators must select nozzle and pressure that deliver
medium or courser droplets in accordance with American
Society of Agricultural & Biological Engineers Standard 572
(ASABE S572).
•
Do
not apply when wind speeds exceed 15 miles per hour
at the application site.
• Do not apply during temper
ature inversions.
Boom-less Ground Applications:
• App
licators must select nozzle and pressure that deliver
medium or courser droplets in accordance with American
Society of Agricultural & Biological Engineers Standard 572
(ASABE S572).
•
Do
not apply when wind speeds exceed 15 miles per hour
at the application site.
• Do not apply during temper
ature inversions.
Spray Drift Advisories
THE APPLICATOR IS RESPONSIBLE FOR AVOIDING OFF-SITE
SPRAY DRIFT.
BE AWARE OF NEARBY NON-TARGET SITES AND ENVIRONMENTAL
CONDITIONS.
IMPORTANCE OF DROPLET SIZE
An effective way to reduce spray drift is to apply large droplets.
Use the largest droplets that provide target pest control. While
applying larger droplets will reduce spray drift, the potential for
drift will be greater if applications are made improperly or under
unfavorable environmental conditions.
Controlling Droplet Size - Ground Boom
•
 V
olume - Increasing the spray volume so that larger droplets are
produced will reduce spray drift. Use the highest practical spray
volume for the application. If a greater spray volume is needed,
consider using a nozzle with a higher flow rate.
•
 Pr
essure - Use the lowest spray pressure recommended for the
nozzle to produce the target spray volume and droplet size.
•
 Spray Nozzle - Use a spray nozzle that is designed for the intended
application. Consider using nozzles designed to reduce drift.
BOOM HEIGHT - Ground Boom
Use the lowest boom height that is compatible with the spray nozzles
that will provide uniform coverage. For ground equipment, the boom
should remain level with the crop and have minimal bounce.
SHIELDED SPRAYERS
Shielding the boom or individual nozzles can reduce spray drift.
Consider using shielded sprayers. Verify that the shields are not
interfering with the uniform deposition of the spray on the target area.
TEMPERATURE AND HUMIDITY
When making applications in hot and dry conditions, use larger
droplets to reduce effects of evaporation.
TEMPERATURE INVERSIONS
Drift potential is high during a temperature inversion. Temperature
inversions are characterized by increasing temperature with altitude
and are common on nights with limited cloud cover and light to no
wind. The presence of an inversion can be indicated by ground fog or
by the movement of smoke from a ground source or an aircraft smoke
generator. Smoke that layers and moves laterally in a concentrated
cloud (under low wind conditions) indicates an inversion, while
smoke that moves upward and rapidly dissipates indicates good
vertical air mixing. Avoid applications during temperature inversions.
WIND
Drift potential generally increases with wind speed. AVOID APPLICATIONS
DURING GUSTY WIND CONDITIONS. Applicators need to be familiar with
local wind patterns and terrain that could affect spray drift.
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Boom-less Ground Applications:
Setting nozzles at the lowest effective height will help to reduce
the potential for spray drift.
5.1 Use Restrictions
Not for Sale, Sale Into, Distribution and/or Use in Nassau and
Suffolk Counties of New York State.
This chemical demonstrates the properties and characteristics
associated with chemicals detected in ground water. The use of this
chemical in areas where soils are permeable, particularly where the
ground water is shallow, may result in ground water contamination.
On the following soil types, do not apply this product within 50 feet
of any well where the depth to ground water is 30 feet or less: sands
with less than 3 percent organic matter; loamy sands with less than
2 percent organic matter; or sandy loams with less than 1 percent
organic matter. See the figure for additional clarification.This product must not be mixed or loaded, or used within 50 feet
of all wells, including abandoned wells, drainage wells, sink
holes, perennial or intermittent streams and rivers, and natural or
impounded lakes and reservoirs. This setback does not apply to
properly capped or plugged abandoned wells and does not apply to
impervious pad or properly diked mixing/loading areas.
Operations that involve mixing, loading, rinsing, or washing of this
product into or from pesticide handling or application equipment
or containers within 50 feet 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 spill or equipment leaks, container or
equipment rinse or washwater, 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 shall be sloped to facilitate material removal. An unroofed pad
shall be of sufficient capacity to contain at a minimum 110 percent
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 percent
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 sites. States may have
in effect additional requirements regarding well-head setbacks
and operational area containment.
Do not flood irrigate to apply or incorporate this product.
Product must be used in a manner which will prevent back
siphoning into wells, spills or improper disposal of excess
pesticide, spray mixtures or rinsates.
Do not apply this product through any type of irrigation system.
Do not apply under conditions that 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:
•
A
void treating powdery dry or light sandy soils when
conditions are favorable for wind erosion. Under these
conditions, the soil surface should first be settled by rainfall
or irrigation.
•
 Do not apply to imper
vious substrates including paved or
highly compacted surfaces or frozen or snow covered soils.
•
 Do not use tailwater from the first flood or furrow irrigation of
treated fields to treat non-target crops unless at least 1/2 inch of
rainfall has occurred between application and the first irrigation.
Do not apply this product using aerial application equipment.
Do not apply when wind conditions favor drift to non-target sites.
To minimize spray drift to non-target areas: Use low pressure
application equipment capable of producing a large droplet spray.
Do not use nozzles that produce a fine droplet spray. Minimize drift
by using sufficient spray volume to ensure adequate coverage with
large droplet size sprays.
•
K
eep ground driven spray boom as low as possible above
the target surface.
• Mak
e application when the wind velocity favors on-target
product deposition (approximately 3 to 10 miles per hour).
Do not apply when wind velocity exceeds 15 miles per hour.
Avoid application when gusts approach 15 miles per hour.
•
Lo
w humidity and high temperatures increase the likelihood
of spray drift to sensitive areas. Avoid spraying during
conditions of low humidity and/or high temperatures. Do
not apply during inversion conditions.
5.2 Application Directions:
Use a minimum of 10 gallons per acre. Nozzle selection should
meet manufacturer’s gallonage and pressure recommendations
for preplant surface or preemergence applications when used as
such. Precipitation or overhead sprinkler irrigation is required after
application to activate herbicide for effective residual control. The
amount of precipitation or irrigation required depends on existing soil
moisture, soil type and percent organic matter content, but 1/2 inch is
normally adequate. If activation of Harness MAX Herbicide does not
occur by rainfall or irrigation within 7-10 days after preemergence
application, where appropriate, a uniform shallow cultivation is
recommended. Dry conditions following application may reduce
the residual activity of Harness MAX Herbicide and other control
measures will need to be implemented.
For postemergence application of Harness MAX Herbicide use 10 to
30 gallons per acre. For best postemergence weed control apply this
product to actively growing weeds before they exceed three inches
in height.
Use of adjuvants is very important to achieve good weed control and crop
safety, especially postemergence. For directions on adjuvant use with
this product, refer to the adjuvant sections (10.4 and 11.5) in this label.
To achieve best weed control, good weed coverage is imperative. To
deliver good coverage and avoid spray drift use spray nozzles that
provide medium to coarse droplet size and do not exceed 10 mph
ground speed during applications. Spray nozzles must be the same
size and type, spaced uniformly along the boom and provide uniform
and accurate application. Set spray boom height at least 15 inches
above the crop canopy for over-the-top broadcast applications.
Maintain pressure at the nozzles of at least 35-40 psi by using an
appropriate pump. However, with extended range or drift reduction
nozzles, lower pressures at the nozzles may be used. For best
postemergence weed coverage 80 or 110 degree flat fan nozzles are
recommended. Do not use controlled droplet applicators or floodjet
nozzles. Improved crop canopy penetration and weed coverage may
be achieved by angling nozzles forward 45 degrees. Make sure the
sprayer has 50-mesh or coarser in-line strainers and nozzle screens.
Keep this product dispersed by using the pump to properly
agitate the solution within the tank and maintain agitation until
spraying is complete. Use full agitation prior to resuming spraying
to resuspend this product in the spray solution if agitation has
been stopped for longer than 5 minutes. Avoid overlapping spray
swaths, as injury may occur to rotational crops.
If rainfall occurs within one hour after application of Harness
MAX Herbicide post-emergence weed control may be reduced.
Precipitation or overhead sprinkler irrigation is required after
application to activate herbicide for effective residual control.
5.3 Cultivation Information
Dry weather may reduce effectiveness of this product. Cultivation may
be necessary if activation does not occur soon after application. If
cultivation is desired, delay cultivation after application for as long as
possible since cultivation disturbs soil and herbicide barrier. Shallowly
cultivate or rotary hoe immediately if weeds or grasses emerge. If
cultivation is necessary because of soil crusting or compaction,
set equipment shallow and minimize lateral soil movement to
avoid dilution or displacement of the herbicide treatment. If a band
application is used and weeds have emerged in the treated band, set
cultivator to throw soil into the row covering the band.
5.4 Maximum Annual Use Rates
Maximum Annual Use Rate for Harness MAX Herbicide:
A maximum of 95 fl oz/A of this product may be applied
per acre per year.
Maximum Annual Use Rate for Acetochlor:
A maximum of 3 lb. a.i./A of acetochlor from any product
or combination of products containing acetochlor may be
applied per acre per year.
Maximum Annual Use Rates for Mesotrione:
A maximum of 0.24 lb. a.i./A of mesotrione from any product or
combination of products containing mesotrione may be applied
per acre per year. Do not exceed a maximum of 0.19 lb. a.i./A
of mesotrione applied postemergence from any product or
combination of products containing mesotrione per acre per year.
5.5 Rotational crops
Do not rotate to food or feed crops other than those listed below
after application of Harness MAX Herbicide at labeled rates.
Crop Rotational Intervals:
Crop Rotational Interval1
Field corn, seed corn, silage corn,
yellow popcorn, or grain sorghum
(milo)
2
Immediately
Wheat 4 months
Alfalfa, peanuts, soybean, cotton 10 months
Barley, rye, oats, millet, rice,
sunflower
The spring following application
Cucurbits, dry beans, peas, sugar
beets and all other rotational crops
18 months
1 Time between Harness MAX Herbicide application and replanting
of the rotational crop
2 Plant only grain sorghum (milo) seed properly treated with seed
protectant or safener
Following harvest of crops treated with Harness MAX Herbicide,
winter cover crops may be planted but not used for food or animal
feed for a minimum of 18 months following the last application of
this product. Injury to cover crops may occur. This prohibition does
not apply to wheat which may be planted 4 months following the
last application of this product.
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5.6 Replanting
If replanting is necessary in fields previously treated with Harness
MAX Herbicide, the field may be replanted to grain sorghum
(milo), field corn, seed corn, or yellow popcorn. When planting
grain sorghum (milo), only use seed properly treated with seed
protectant or safener. When replanting, perform only a minimum
of tillage required if relying on Harness MAX Herbicide for residual
weed control. If a second application of Harness MAX Herbicide
or other mesotrione containing product is required please refer
to Section 11.0, as crop injury or illegal residues may occur in
harvested crops. If tank-mix combinations were used, refer to
product labels for any additional replanting instructions. 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.
6.0 WEED RESISTANCE MANAGEMENT
For resistance management, please note that Harness MAX
Herbicide contains both a Group 27 Mesotrione and a Group 15
Acetochlor herbicide. Any weed population may contain plants
naturally resistant to Group 27 and/or Group 15 herbicides. The
resistant individuals may dominate the weed population if these
herbicides are used repeatedly in the same fields. Appropriate
resistance-management strategies should be followed.
To delay herbicide resistance, take one or more of the following steps:
• Rotate the use of Harness MAX Herbicide or other Group 27
or Group 15 herbicides within a growing season sequence or
among growing seasons with different herbicide groups that
control the same weeds in a field.
• 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 seeding
rates; precision fertilizer application method and timing to favor
the crop and not the weeds), biological (weed-competitive crops
or varieties) and other management practices.
• Scout after herbicide application 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 species. If resistance is suspected, prevent weed seed
production in the affected area by an alternative herbicide from
a different group or by a mechanical method including 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.
• If a weed pest population continues to progress after treatment
with this product, discontinue use of this product, and switch
to another management strategy or herbicide with a different
mode of action, if available.
• Contact your local extension specialist or certified crop advisors
for additional pesticide resistance-management and/or integrated
weed-management recommendations for specific crops and
weed biotypes.
For further information or to report suspected resistance contact
Bayer CropScience at 1-866-99BAYER (1-866-992-2937). You can
also contact your pesticide distributor or university extension
specialist to report resistance.
7.0 SOIL TEXTURE
Applicators should evaluate soil conditions carefully to assure that
they choose the correct label rate.
The use rates of this product and the other herbicides labeled for
use in tank mixtures with this product vary with soil texture. Unless
soil texture is specifically named, rate tables throughout this label
refer to only three soil textural groups: coarse, medium and fine.
The following is a complete listing of soil textures included in each
of these three soil textural groups:
SOIL TEXTURAL GROUP SOIL TEXTURE
COARSE sand, loamy sand, sandy loam
MEDIUM loam, silt loam, silt, sandy clay loam
FINE silty clay loam, clay loam, sandy clay,
silty clay, clay
Refer to the above table to determine the corresponding soil
textural group for the soil to be treated.
8.0 MIXING, SPRAYING AND HANDLING INSTRUCTIONS
NOTE: Direct contact or exposure to this product or spray mixtures
of this product should be minimized. The following instructions
for transfer, mixing, cleaning or repairing equipment should
be followed in order to minimize this exposure. Review the
protective clothing requirements as listed in the “PRECAUTIONARY
STATEMENTS” section of this label and do not use this product
until you have the necessary protective clothing.
2.5 Gallon Containers
Open pouring from these containers can result in exposure from
splashing or spilling. Special care in lifting and pouring is strongly
recommended.
Bulk Containers
Open pouring from these containers can result in exposure from
splashing or spilling and is not recommended. This product should
be transferred from these containers to the mix or spray tank
using pumps or transfer probes. The probe or pump should not be
removed from the container or disconnected until the container is
emptied or rinsed. Use the pump or probe system to rinse the empty
container and transfer the rinsate directly to the mix or spray tank.
8.1 Equipment Cleaning and Repair
Cleaning and repair of transfer systems and application equipment
is a source of exposure to this product. Care should be taken to
minimize exposure during cleaning and repair to transfer systems
and application equipment. Whenever possible, these systems or
equipment should be rinsed before being cleaned or repaired.
When repairs must be made during transfer or application, the
equipment should be shut down, and special care taken to avoid
contact with the pesticide.
Equipment Cleaning After Application of Harness MAX Herbicide
Only mix the volume of spray solution required for each spray
application. Thoroughly clean spray equipment after spraying this
product and before using spray equipment again, especially to
spray a crop other than corn. When using the equipment cleanout
procedure described below, dispose of all rinsate in an appropriate
manner according to all local State and Federal regulations.
1. Flush the entire spraying system with clean water (tank, hoses,
boom, and nozzles).
2. Use 1 gal. of household ammonia per 25 gals. of water to create
a cleaning solution.
3. Alternatively, there are many spray tank cleaners that may be
used instead of a household ammonia solution.
4. Using a pressure washer and the cleaning solution, wash all parts
of the inside of the spray tank, including the inside top surface. If
a pressure washer is not available, completely fill the sprayer with
cleaning solution to ensure contact with all internal surfaces of
the tank and plumbing. Start the sprayer’s agitation system and
thoroughly recirculate the cleaning solution for at least 15 minutes.
Remove all visible deposits from the spraying system.
5. Use the cleaning solution to flush hoses, spray lines, and
nozzles for at least 1 minute.
6. Remove end caps from the boom and flush dead space areas
with clean water, then replace end caps.
7. After disposing of rinsate, repeat steps 2-5.
8. Using the cleaning solution, clean the removed nozzles, screens,
and strainers separately.
9. Using clean water, rinse the entire spraying system.
8.2 Sprayer Compatibility
Always predetermine the compatibility of this product or labeled
mixtures of this product with water carrier or sprayable fluid
fertilizer carrier by mixing small proportional quantities in advance.
See the “STANDARD SPRAYABLE FLUID FERTILIZER COMPATIBILITY
TEST” section in this label to determine the compatibility of this
product and the labeled tank mixtures specified for use with
sprayable fluid fertilizer carrier.
For recommended tank mixes, see tank mix sections 10.3 and 11.3
of this label. 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.  Do
not tank mix this product with any fungicide, insecticide, adjuvant or
fertilizer solution not recommended on this label without first testing
compatibility. Use this product only in sprayers that have good
agitation and are in good running condition. Make sure the sprayer
has been cleaned by following the instructions on the previously
used products label before mixing and applying this product.
Mix this product or labeled tank mixture of this product with the
appropriate carrier as follows:
1. Place a 20- to 35-mesh screen or wetting basket over filling port.
2. Through the screen, fill the sprayer tank one-half full with
appropriate carrier. For preemergence applications liquid
fertilizer (except suspension fertilizers) may be used as the
carrier. For postemergence applications, use clean water only
as the carrier.
3. If a compatibility agent is necessary to improve mixing or to
prevent the formation of undesirable and unsprayable gels or
precipitates, while agitating add it to the carrier already in the
tank. For example, AMS should be added at this step and agitate
until completely dispersed. Use only compatibility agents cleared
by the FDA for this use. Read and follow all directions for use,
cautionary statements and all other information appearing on the
selected compatibility agent label. Check for adequate agitation.
4. 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. Continue agitation.
5. If a flowable formulation is used, add slowly through screen into
the tank. Mixing and compatibility may be improved when the
flowable is premixed one part flowable with one part water and
added slowly to the tank in diluted form.
6. Add this product slowly through the screen into the tank.
Longer agitation may be required for complete dispersion
of this product when using cold water sources. Mixing and
compatibility may be improved when this product is prediluted
with two parts of water and added to the tank in diluted form.
ACETOCHLOR
MESOTRIONE
HERBICIDE
HERBICIDE
15
27GROUP
GROUP
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7.
 Add appropriate adjuv
ant and UAN if needed and allowed, then
complete filling the sprayer tank with carrier. If a labeled tank
mixture product is to be used, add the required amount near the
end of the filling process. Remove hose from tank immediately
after filling to avoid siphoning back into the water source.
Maintain good agitation at all times until the contents of the tank
are sprayed.
NOTE: If spray mixture is allowed to settle at any time, thorough
agitation is required to resuspend the mixture before spraying is
resumed. Keep bypass line on or near bottom of tank to minimize
foaming. Screen size in nozzle or line strainers should be no finer
than 50-mesh. Carefully select the proper nozzle to avoid spraying
a fine mist. Check for even distribution of spray droplets. For best
results with ground application, use flat-fan or whirl-chamber
nozzle. To reduce loss of chemical due to drift of a fine mist, apply
at pressures less than 40 psi.
8.3 Standard Sprayable Fluid Fertilizer Compatibility Test
Herbicides may not always mix evenly throughout a sprayable
fluid fertilizer or the components may separate too quickly to
make their combined use of practical value. This may be due to
certain characteristics of the different fluid fertilizers. A simple test
using small quantities of the components is suggested to provide
compatibility potential. The test follows:
A. Materials Required For Compatibility Test
1.
 T
wo one-quart jars with lid or stopper (marked “with” and
“without”).
2.
 TEAspoons
(for a more exacting test, a five to ten milliliter (mL)
pipette or graduated cylinder is desirable).
3.
 Spr
ayable fluid fertilizer to be tested.
4.
 The herbicide c
hemicals to be mixed.
5. A compatibility agent (the purpose of the adjuv
ant is to help
keep the fertilizer and crop protection chemical in suspension,
if this assistance is needed).
B. Procedure
1.
 Add one pint of the spr
ayable fluid fertilizer that will be used or
other herbicide carrier to each jar marked “with” and “without.”
Add One Pint Liquid Fertilizer
To Two Quart Jars
WITH WITHOUT
2. T o the jar marked “with,” add 1/4 teaspoon or 1.2 milliliters
of a suitable compatibility agent; shake gently for five to ten
seconds to mix. (1/4 teaspoon in one pint is the equivalent of
two pints per 100 gallons of liquid fertilizer.)
To Jar Marked “With” add Compatibility Agent and Shake To Mix
WITH WITHOUT
3. T
o each jar add the appropriate amount of herbicide(s). If
more than one is used, add them separately with the wettable
powders or dry flowables added first, flowables second and
liquid last. Shake gently five to ten seconds after each addition.
Add Herbicide(s) To Both Jars
And Shake to Mix
WITH WITHOUT
Amount to be Added per
Pint of Sprayable Fluid
Fertilizer (Assuming
Volume is 25 Gallons/Acre)
HERBICIDE RATE/ACRE
Level
Teaspoons
Wettable
Powders or
Dry Flowables
1 pound = 1.5
2 pounds = 3.0
3 pounds = 4.5
4 pounds = 6.0
5 pounds = 7.5
HERBICIDE RATE/ACRE
Level
Teaspoons Milliliters
Emulsifiable
   Concentrates
or Flo
wables
or Liquids or
Solutions
1 pint = 0.5 or 2.4
1 quart = 1.0 or 4.7
2 quarts = 2.0 or 9.5
3 quarts = 3.0 or 14.2
1 gallon = 4.0 or 19.0
5 quarts = 5.0 or 23.8
This compatibility test is designed for 25 gallons of spray per acre with
the maximum labeled rate of herbicide. For changes in spray volume
or herbicide rate, make appropriate changes in the ingredients of the
test. Regardless of spray volume, the amount of compatibility agent
should be equal to two or three pints (two pints = 1/4 teaspoon or
1.2 milliliters, three pints = 3/8 teaspoon or 1.8 milliliters per pint of
sprayable fluid fertilizer) per 100 gallons of liquid fertilizer.
C. Observations and Decisions
1. If the herbicide(s) and the spr
ayable fluid fertilizer are
compatible.
2.
 If a compatibility agent is necessar
y.
Five minutes after the final addition and mixing, observe both jars
for the formation of large flakes, sludge, gels or other precipitates.
Observe if the herbicide(s) cannot be physically mixed with the
liquid fertilizer but remains as small oily particles in the solution.
If incompatibility in any form described above occurs in the jar
“with” the compatibility agent added, the liquid fertilizer and the
herbicide(s) should not be used together in the same spray tank.
If incompatibility as described above occurs in the jar “without”
the adjuvant but not in the jar “with” adjuvant, the use of a
compatibility adjuvant is recommended.
Both jars should be allowed to stand and be observed periodically for
one-half hour. If the separate layers of liquid fertilizer and additives
can be resuspended by shaking, commercial application is possible.
An emulsifiable concentrate normally will go to the top after standing;
wettable powders will either settle to the bottom of the tank or jar, or
float to the top, depending upon the density of the fertilizers.
If the herbicide(s) is compatible with fluid fertilizer in the foregoing
test without having to use a compatibility agent, fluid fertilizer
may be used for the premixing. If it is not compatible without
the compatibility agent, the herbicide(s) should be premixed with
water before adding to the spray tank.
9.0 APPLICATION SYSTEMS
9.1 Ground Broadcast Treatment
Apply this product and the labeled tank mixtures in 10 or
more gallons of spray solution per acre using broadcast boom
equipment. The carrier may be either water or liquid fertilizer
(excluding suspension fertilizers) for preemergence applications
and water only for postemergence applications. Do not apply during
periods of gusty winds, when winds are in excess of 15 miles per
hour or when other conditions favoring drift exist.
9.2 Ground Band Treatment
Apply a broadcast equivalent rate and volume per acre. To
determine these:
Band width
in inches X
Broadcast
RATE
per acre
= Band RATE
per acreRow width
in inches
Band width
in inches X
Broadcast
VOLUME
per acre
=
Band
VOLUME
per acreRow width
in inches
9.3 Application With Dry Bulk Fertilizer
The herbicide-fertilizer impregnation process must be completed
only by commercial fertilizer or chemical dealerships properly
equipped for this procedure. Dry bulk fertilizer may be impregnated
with this product or the tank mixtures of this product. 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. This product and these tank
mixtures must be applied with a minimum of 200 pounds of dry
bulk fertilizer per acre and shallowly incorporated within 14 days
prior to planting.
The following table provides a reference to determine the amount of
Harness MAX Herbicide to be mixed per ton of dry bulk fertilizer for
a range of herbicide recommendations for fertilizer rates per acre:
Fertilizer
Rate
(pounds/
acre)
Acres
Covered
(per
ton)
Fluid ounces of Harness MAX Herbicide / Ton
Dry Bulk Fertilizer
48
(fl oz)
55
(fl oz)
64
(fl oz)
81
(fl oz)
88
(fl oz)
95
(fl oz)
Fluid ounces Herbicide/T
on Fertilizer
200 10 480 550 640 810 880 950
300 6.7 322 368 429 523 590 636
400 5 240 275 320 405 440 475
500 4 192 220 256 324 352 380
600 3.3 158 182 211 267 290 314
700 2.9 139 160 186 235 255 276
To determine the amount of this product needed for rates not
included in the preceding table, use the following formula:
Desired rate of Harness MAX
Herbicide (fluid ounces /Acre) ÷
desired fertilizer rate (pounds/
Acre) X 2000 Pounds /Ton
=
Fluid ounces of Harness
MAX Herbicide per Ton of
Dr
y Bulk Fertilizer
For example: If the desired rate of this product is 75 fl oz/A and the
desired fertilizer rate is 200 pounds per acre, the rate of this product
per ton of dry fertilizer would be 750 fl oz (75 fl oz/A ÷ 200 lbs/A X
2000 lbs/ton).
Mix and blend the dry fertilizer and herbicide mixture in a closed
rotary drum-type mixture allowing sufficient time to ensure uniform
coverage. Use at least one ton of dry fertilizer per mixing operation.
Inject the herbicide into the drum over a minimum of a 2-minute
period and allow at least 2 additional minutes mixing time to ensure
uniformity. The nozzle used to spray the herbicide treatment must
be placed inside the mixer to provide uniform spray coverage of the
tumbling fertilizer. Harness MAX Herbicide may also be impregnated
on dry bulk fertilizer in the field while the fertilizer is being spread
using a pneumatic applicator equipped to impregnate herbicides.
If the dry fertilizer used has inadequate absorptive capacity, use a
higher absorptive material such as Agsorb or Micro-Cel, to provide
a free-flowing mixture.
The following table provides a partial list of approved dry fertilizers
which may be impregnated with this product or tank mixtures of
this product with other herbicides.
FERTILIZER (N-P-K)
Ammonium sulfate (21-0-0)
Ammonium phosphate-sulfate (16-20-0)
Diammonium phosphate (18-46-0)
Monoammonium phosphate (11-56-0)
Potassium chloride (0-0-60)
Potassium sulfate (0-0-52)
Urea (46-0-0)*
*Some ureas may be phytotoxic when applied on corn. Use only
ureas known to be safe to corn.
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NOTE: DO NOT impregnate this product or tank mixtures of this
product with other herbicides on fertilizers containing ammonium
nitrate, potassium nitrate or sodium nitrate.
Precaution: To avoid potential for explosion, do not impregnate
GF-3066 on ammonium sorbate nitrate, potassium nitrate, or
sodium nitrate fertilizer or fertilizer blends. Do not impregnate on
a single (0-20-0) or triple (0-46-0) super phosphate. Do not attempt
to impregnate GF-3066 on agricultural limestone as the herbicide
will not be adequately absorbed.
Spread the herbicide-dry fertilizer mixture uniformly with a
properly calibrated applicator: dribble, pneumatic (air flow) or
spin. When using spin applicators, fertilizers impregnated with
this product or tank mixtures of this product with other herbicides
must be spread at half-rate and overlapped 100 percent to obtain
full rate and uniform distribution. Non-uniform spreading of the
fertilizer-herbicide mixture may result in unsatisfactory weed
control or crop injury.
10.0 WEEDS CONTROLLED
When applied as directed under conditions described, this product
alone will CONTROL or PARTIALLY CONTROL the weeds listed.
Partially controlled can mean inconsistent control (poor to good)
or consistent control but at levels generally below what may be
seen as commercially acceptable weed control.
10.1 Preemergence
Preemergence application of this product followed by dry weather may
reduce residual weed control. If available, apply ½ to 1 inch of irrigation
following a preemergence application. In the absence of irrigation, make
a uniform shallow cultivation as soon as weeds emerge.
Table 1. Weeds controlled or Partially Controlled Preemergence
by Harness MAX Herbicide
Common Name Scientific Name
C = Control
PC = Partial
Control
Amaranth, palmer Amaranthus palmeri C
Amarath, powell Amaranthus powellii C
Amaranth, spiny Amaranthus spinosus C
Barnyardgrass Echinochloa crus-galli C
Beggarweed, Florida Desmodium tortuosum PC
Broadleaf signalgrass Urochloa platyphylla C
Buffalobur Solanum rostratum C
Burclover, California Medicago polymorpha C
Carpetweed Mollugo verticillata C
Carrot, wild Daucus carota C
Chickweed, common Stellaria media C
Chickweed, mouseear Cerastium vulgatum C
Cocklebur, common Xanthium strumarium PC
Crabgrass, large Digitaria sanguinalis C
Crowfootgrass Dactyloctenium aegyptium C
Cupgrass, Prairie Eriochloa contracta C
Cupgrass, Southwestern Eriochloa acuminata C
Cupgrass, woolly Eriochloa villosa C
Dandelion, common (seedling) Taraxicum officinale C
Deadnettle, purple Lamium purpureum C
Dock, curly Rumex crispus C
Eveningprimrose, cutleaf Oenothera laciniata C
Fiddleneck, coast Amsinckia intermedia C
Filaree, redstem Erodium cicutarium C
Filaree, whitestem Erodium moschatum C
Fleabane, hairy Conyza bonariensis C
Foxtail, giant Setaria faberi C
Foxtail, green Setaria veridis C
Foxtail, robust (purple, white) Setaria veridis C
Foxtail, yellow Setaria pumila C
Galinsoga Galinsoga parviflora C
Goosegrass Eluesine indica C
Geranium, Carolina Geranium carolinianum C
Groundcherry, smooth Physalis subglabrata C
Groundcherry, cutleaf Physalis angulata PC
Groundsel, common Senecio vulgaris C
Henbit Lamium amplexicaule C
Horsenettle Solanum carolinense PC
Horseweed/marestail Conyza canadensis C
Jimsonweed Datura stramonium C
Johnsongrass, seedling Sorghum halepense PC
Kochia Kochia scoparia PC
Lambsquarters, common Chenopodium album C
Lettuce, prickly Lactuca serriola C
Mallow, common Malva neglecta C
Mayweed, chamomile Anthemis cotula C
Millet, foxtail Setaria italica PC
Millet, wild proso Panicum miliaceum PC
Morningglory, entireleaf Ipomoea hederacea PC
Morningglory, ivyleaf Ipomoea hederacea PC
Morningglory, pitted Ipomoea lacunosa PC
Morningglory, tall Ipomoea purpurea PC
Morningglory, smallflower Jacquemontia tamnifolia PC
Mustard Brassica spp. PC
Nettle, burning Urtica urens C
Nightshade, black Solanum nigrum C
Nightshade, eastern black Solanum ptycanthum C
Nightshade, hairy Solanum sarrachoides C
Nutsedge, Yellow Cyperus esculentus PC
Oat, wild Avena fatua PC
Panicum, browntop Panicum fasciculatum C
Panicum, fall Panicum dichotomiflorum C
Panicum, Texas Panicum texanum PC
Pansy Viola tricolor C
Pigweed, redroot Amaranthus retroflexus C
Pigweed, smooth Amaranthus hybridus C
Pigweed, tumble Amaranthus albus C
Pineappleweed Matricaria matricariodes C
Puncturevine, common Tribulus terrestris C
Purslane, common Portulaca oleracea C
Pusley, common Richardia scabra C
Ragweed, common Ambrosia artemisiifolia C
Ragweed, giant Ambrosia trifida PC
Redmaids Calandria caulescens C
Rice, red Oryza sativa C
Rocket, London Sisymbrium irio C
Sandbur, field Cenchrus incertus PC
Shattercane Sorghum bicolor PC
Shepherd’s-purse Capsella bursa-pastoris C
Sicklepod Cassia obtusifolia PC
Sida, prickly Sida spinosa PC
Smartweed, ladysthumb Polygonum persicaria C
Smartweed, pale Polygonum lapathifolium C
Smartweed, Pennsylvania Polygonum pensylvanicum C
Sowthistle, annual Sonchus oleraceus C
Spanishneedles Bidens bipinnata C
Sprangletop, red Leptochloa filiformis C
Starbur, bristly Acanthospermum hispidum PC
Sunflower, common Helianthus annuus PC
Swinecress Coronopus didymus C
Tasselflower, red Emilia sonchifolia C
Velvetleaf Abutilon theophrasti C
Vetch, common Vicia sativa C
Vetch, purple Vicia benghalensis PC
Waterhemp, common Amaranthus rudis C
Waterhemp, tall Amaranthus tuberculatus C
Wheat, volunteer Triticum aestivum PC
Witchgrass Panicum capillare C
Willowherb, panicle Epilobium brachycarpum C
10.2 Postemergence
For best postemergence weed control apply this product to
actively growing weeds before they exceed three inches in height.
Postemergence control can be reduced or delayed if weeds are not
actively growing or stressed due to lake of fertility, heat, drought,
flooding or prolonged cool temperatures. This product will not
provide consistent or effective control of weeds identified as
resistant to postemergence HPPD inhibitors.
Table 2. Weeds Controlled or Partially Controlled Postemergence
by Harness MAX Herbicide
Common Name Scientific Name
C = Control
PC = Partial
Control
Amaranth, palmer Amaranthus palmeri C
Amarath, powell Amaranthus powellii C
Amaranth, spiny Amaranthus spinosus C
Atriplex Chenopodium orach C
Broadleaf signalgrass Urochloa platyphylla C
Buckwheat, wild Polygonum convolvulus PC
Buffalobur Solanum rostratum C
Burcucumber Sicyos angulatus PC
Carpetweed Mollugo verticillata C
Carrot, wild Daucus carota PC
Chickweed, common Stellaria media C
Cocklebur, common Xanthium strumarium C
Crabgrass, large Digitaria sanguinalis C
Dandelion, common (seedling) Taraxicum officinale PC
Dock, curly Rumex crispus PC
Galinsoga Galinsoga parviflora C
Hemp Cannabis sativa C
Horsenettle Solanum carolinense C
Jimsonweed Datura stramonium C
Horseweed/marestail Conyza canadensis C
Knotweed, prostrate Polygonum aviculare PC
Kochia Kochia scoparia PC
Lambsquarters, common Chenopodium album C
Morningglory, entireleaf Ipomoea hederacea PC
Morningglory, ivyleaf Ipomoea hederacea PC
Morningglory, pitted Ipomoea lacunosa PC
Mustard, wild Brassica kaber C
Nightshade, black Solanum nigrum C
Nightshade, eastern black Solanum ptycanthum C
Nightshade, hairy Solanum sarrachoides C
Nutsedge, yellow Cyperus esculentus PC
Pigweed, redroot Amaranthus retroflexus C
Pigweed, smooth Amaranthus hybridus C
Pigweed, tumble Amaranthus albus C
Pokeweed, common Phytolacca americana C
Potatoes, volunteer Solanum spp. C
Purslane, common Portulaca oleracea PC
Pusley, common Richardia scabra C
Ragweed, common Ambrosia artemisiifolia C
Ragweed, giant Ambrosia trifida C
Sesbania, hemp Sesbania exaltata C
Smartweed, ladysthumb Polygonum persicaria C
Smartweed, pale Polygonum lapathifolium C
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Common Name Scientific Name
C = Control
PC = Partial
Control
Smartweed, Pennsylvania Polygonum pensylvanicum C
Sunflower, common Helianthus annuus C
Thistle, Canada Circium arvense PC
Velvetleaf Abutilon theophrasti C
Waterhemp, common Amaranthus rudis C
Waterhemp, tall Amaranthus tuberculatus C
11.0 PREPLANT SURFACE, PREPLANT INCORPORATED,
AT-PLANTING OR PREEMERGENCE APPLICATIONS IN CORN
Approved application systems include ground (broadcast boom or
banded) and dry bulk fertilizer impregnation.
This product may be applied by ground for preemergence weed control
in field corn, production seed corn, and yellow popcorn, according
to the application instructions provided below. For use on field corn
inbred lines, refer to individual seed company recommendations.
This product may be applied in no-till and other conservation tillage
systems, as well as in conventional tillage systems. Application of
this product should be made less than 30 days before planting
corn but prior to weed emergence. To get the most residual activity
during the corn growing season, application of Harness MAX
Herbicide should occur as close as possible to planting.
11.1 Harness MAX Herbicide Use Rates
Apply this product alone at 55 to 95 fl. oz./A using ground sprayers
with a spray volume of 10-30 gals. of water (up to 80 gals. if
applied with liquid fertilizers) per acre to control weeds listed
in Table 1. in the WEEDS CONTROLLED section of this label. This
product may be tank mixed with other herbicides. For a list of tank
mix options, refer to tank mix section 10.3 of this label.
Application Rates (minimum and maximum range)
SOIL TEXTURAL
GROUP
BROADCAST RATE PER ACRE (fl oz) *
Less than 3%
organic matter
3 % or more
organic matter **
Coarse 55 to 64 55 to 64
Medium 64 to 75 64 to 75
Fine 64 to 75 75 to 88
* On medium and fine textured soils use up to 95 fl oz per acre in
areas of heavy weed infestation.
** On soils with 6 to 10 percent organic matter use 81 to 95 fl oz/acre.
On soils with more than 10 percent organic matter, use 95 fl oz per
acre.
Use the higher rates in the application rate ranges in areas of heavy
weed infestation or where otherwise specified. Do not exceed a total of
95 fl oz per acre of this product per year. If emerged weeds are present
at the time of application, apply this product in tank mixture with an
appropriate labeled postemergence herbicide. See recommended tank
mixture products in the TANK MIXTURES sections 10.3 and 11.3.
Apply this product preemergence with water or liquid fertilizer
(excluding suspension fertilizers) as carrier at a volume of
10-60 gals./A. To deliver good coverage and avoid spray drift
use spray nozzles that provide medium to coarse droplet size.
Spray nozzles must be the same size and type, spaced uniformly
along the boom and provide uniform and accurate application.
Maintain pressure at the nozzles of at least 35-40 psi by using
an appropriate pump. However, with extended range or drift
reduction nozzles, lower pressures at the nozzles may be used.
Keep this product dispersed by using the pump to properly
agitate the solution within the tank and maintain agitation
until spraying is complete. Use full agitation prior to resuming
spraying to resuspend this product in the spray solution if
agitation has been stopped for longer than 5 minutes.
The table below indicates how much acetochlor and mesotrione is
delivered when the specified rate of this product is applied.
Amount of active ingredient delivered by Harness MAX Herbicide
(fl oz/A)
Application Rate Amount of active ingredient delivered
Harness MAX
Herbicide (fl oz/A) Acetochlor (# ai/A) Mesotrione (# ai/A)
40 1.09 0.10
55 1.50 0.14
64 1.76 0.16
75 2.05 0.19
81 2.20 0.20
88 2.40 0.22
95 2.60 0.24
11.2 Application Methods
Preplant Surface Applications
Application of this product should be made less than 30 days
before planting corn but prior to weed emergence.
NOTE: Applications on coarse soils should not be made more than
two weeks prior to planting. In order to provide broad-spectrum
weed control, single applications of this product must be followed
with a planned postemergence application of a labeled broadleaf
and/or grass herbicide. Observe the directions for use, precautions
and restrictions on the label of the postemergence herbicide
before use of these products.
Preplant Incorporated Applications
This product may be mixed into the upper 1-inch of soil using
shallow incorporation equipment any time within 14 days prior to
planting. Apply the specified treatment rate to the soil surface as a
broadcast application. Either existing soil moisture or subsequent
precipitation or irrigation is required to bring incorporated herbicide
treatments into contact with germinating weed seedlings. Irrigation
within 10 days following application may improve weed control. If
weeds emerge after treatment, rotary hoe or shallowly cultivate
immediately to improve performance but only cultivate if rainfall
or irrigation does not occur within 10 to 14 days after application.
At-Planting or Preemergence Applications
Applications of this product according to the rate table provided
above may be made in combination with the tank mixture products
listed below, at the time of planting. During the planting operation,
be careful not to move untreated soil to the surface or move
treated soil out of the row, as weed control may be reduced.
11.3 Tank Mixtures
Harness MAX Herbicide may be tank-mixed with the following
products for improved weed control spectrum in burndown or
preemergence applications in corn. These tank mixtures may also
be used to include a different site of action herbicide to help control
or manage the development of resistant weed biotypes. Ensure that
the specific product being used in the tank mixture is registered
for the specific preplant, at-planting, or preemergence application
timing to corn It is the pesticide user’s responsibility to ensure that
all products in the listed mixtures are registered for the intended
use. Read and follow the applicable restrictions and limitations and
directions for use on all product labels involved in tank mixing.
Users must follow the most restrictive directions for use and
precautionary statements of each product in the tank mixture. Not
all tank mixtures with Harness MAX Herbicide have been tested at
all labeled use rates in all environments. It is suggested that the
user choose a use rate of the tank mix product in the middle of the
rate range to reduce the potential for injury to corn. Use rates for
this product can be found in the table in Section 10.1 of this label.
When using fluid fertilizer as a carrier, refer to the label of the
specific tank mixture product for mixing directions. The most
restrictive label directions apply. For mixing instructions, see the
“MIXING, SPRAYING AND HANDLING” section of this label.
Burndown Tank Mixtures
Harness MAX Herbicide may be applied in tank mixture with
other registered herbicides for burndown of emerged weeds
and residual weed control. Application can be made prior to
planting corn or before corn emergence. This product may be tank
mixed with Roundup ® agricultural brands, Gramoxone ® brands,
dicamba brands and/or 2,4-D. Use the adjuvant system which
is recommended for use with the burndown herbicide. It is the
pesticide user’s responsibility to ensure that all products in the
listed mixtures are registered for application burndown to corn.
Users must follow the most restrictive directions and precautionary
language of the products in the mixture (for example, first aid from
one product, spray drift management from another).
Preemergence Tank Mixtures
Harness MAX Herbicide may be applied in tank mixture with other
registered herbicides for preemergence residual weed control. It
is the pesticide user’s responsibility to ensure that all products in
the listed mixtures are registered for application preemergence
to corn. Users must follow the most restrictive directions and
precautionary language of the products in the mixture (for example,
first aid from one product, spray drift management from another).
2,4-D, acetochlor, atrazine, clopyralid, dicamba, flumetsulam,
glyphosate, gramoxone, mesotrione, metribuzin,
pendimethalin, simazine
DiFlexx® (EPA Reg. No. 264-1173; dicamba), Harness (EPA Reg.
No. 524-480; acetochlor), Honcho® K6 (EPA Reg. No. 524-539;
glyphosate), Roundup PowerMAX ® (EPA Reg. No. 524-549;
glyphosate), Roundup PowerMAX ® II/Roundup WeatherMAX ®
(EPA Reg. No. 524-537; glyphosate), Roundup PowerMAX ® 3
(EPA Reg. No. 524-659; glyphosate)
11.4 Premergence Spray Adjuvants
When applying this product preplant or preemergence (before corn
is emerged), and where emerged weeds are present, the use of
any adjuvant for agricultural use is permitted. To enhance control
of emerged weeds MSO type adjuvants are typically better than
COC type adjuvants, which are generally better than NIS type
adjuvants. Addition of UAN or AMS typically improves control of
emerged weeds. If Harness MAX Herbicide is being tank mixed
with another registered herbicide. 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.
ATTENTION: AVOID DRIFT—EXTREME CARE MUST BE USED
WHEN APPLYING THESE TANK MIXTURES TO PREVENT INJURY TO
DESIRABLE PLANTS AND CROPS. Do not apply when conditions
favor drift. Do not allow spray mist to drift since even minute
quantities of spray can cause severe damage or destruction
to nearby crops, plants or other areas on which treatment is
not intended. Do not apply when winds are gusty or in excess
of 15 miles per hour or when other conditions, including lesser
wind velocities, will allow drift to occur. When spraying, avoid
combinations of pressure and nozzle type that will result in fine
particles (mist) which are more likely to drift.
Detailed information regarding “APPLICATION SYSTEMS” should
be carefully reviewed in conjunction with the information in this
section. If the specific information in this section differs from
the “PRODUCT INFORMATION” section, this section should take
precedence.
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12.0 POSTEMERGENCE APPLICATION IN CORN
This product may be applied postemergence until corn reaches
11 inches in height. Precipitation or overhead sprinkler irrigation
is required after application to move the herbicide treatment
into the weed germination zone to control weeds that have
not emerged. The amount of precipitation or irrigation required
depends on existing soil moisture, soil type and percent organic
matter content, but 1/2 to 3/4 inch is normally adequate. If weeds
emerge after treatment, rotary hoe or shallowly cultivate to
improve performance.
12.1 Harness MAX Herbicide Use Rates
Apply this product alone at 40 to 75 fl. oz./A using ground sprayers
with a spray volume of 10-30 gals. of water per acre to control
weeds listed in Table 2. in the WEEDS CONTROLLED section of
this label. Always add an appropriate adjuvant to the spray tank
(see the POSTEMERGENCE SPRAY ADJUVANTS section 11.5 of
this label). For best results, apply this product to actively growing
weeds before they exceed three inches in height. Susceptible
weeds which emerge soon after application of this product may
be controlled after they absorb the herbicide from the soil. Do not
apply when conditions favor drift.
Application Rates (minimum and maximum range)
SOIL TEXTURAL
GROUP
BROADCAST RATE PER ACRE (fl oz) *
Less than 3%
organic matter
3 % or more
organic matter **
Coarse 40 to 55 40 to 55
Medium 55 to 64 55 to 64
Fine 55 to 64 64 to 75
* On medium and fine te xtured soils use up to 75 fl oz per acre in areas
of heavy weed infestation.
**
 On soils with g
reater than 6 percent organic matter use 75 fl oz/acre.
Use the higher rates in the rate ranges listed in this table in areas of
heavy weed infestation or if a postemergence application of this product
is to be made to a field where no preemergence herbicide containing
mesotrione was applied. Apply this product postemergence with water
as a carrier at a volume of 10-30 gals./A. Use a minimum of 20 gals./A
when weed foliage is dense. To achieve best weed control, good weed
coverage is imperative. Set spray boom height at least 15 inches above
the crop canopy for over-the-top broadcast applications. For additional
information refer to Section 4.2 (Application Directions) of this label.
If a postemergence application of this product is to be made to
a field where Harness MAX Herbicide or any other mesotrione
containing product was applied preemergence, only the minimum
rate of 40 fl oz/A of Harness MAX Herbicide may be applied. Do
not exceed the total maximum rate of mesotrione of 0.24 lb
a.i. per acre per year. Do not make more than 2 applications
of Harness MAX Herbicide or any other mesotrione containing
products per year. Do not make a second application of Harness
MAX Herbicide within 14 days of the first application. Refer to the
table in section 10.1 of this label for additional information on
the amount of acetochlor and mesotrione delivered at different
rates of this product.
12.2 Application Methods
This product may be applied alone or tank-mixed with certain
products postemergence to corn. Approved application systems
include ground broadcast boom.
12.3 Tank Mixtures
This product may be tank-mixed with the following products for
postemergence use in corn (after corn has emerged). Ensure that
the specific product being used in the tank mixture is registered
for application postemergence (in-crop) to corn. It is the pesticide
user’s responsibility to ensure that all products in the listed
mixtures are registered for application postemergence to corn.
Read and follow the applicable restrictions and limitations and
directions for use on all product labels involved in tank mixing.
Users must follow the most restrictive directions and precautionary
language of the products in the mixture (for example, first aid from
one product, spray drift management from another). Not all tank
mixtures with Harness MAX Herbicide have been tested at all
labeled use rates in all environments. It is suggested that the user
choose a use rate of the tank mix product in the middle of the rate
range to reduce the potential for injury to corn.
Observe directions for use, precautions and restrictions on
the label of the postemergence herbicide. If unsatisfactory
weed control occurs (due to excessively dry or excessively wet
conditions) following the earlier application, a postemergence
application of an appropriate labeled grass and/or broadleaf weed
herbicide may be used. If a postemergence treatment includes the
herbicide used early preplant, do not exceed the maximum labeled
rate for corn on a given soil texture.
Use rates for this product can be found in the table in Section
11.1 of this label. Do not apply less than 40 fl oz per acre of this
product postemergence or loss of residual control may result.
Always add an appropriate adjuvant to the spray tank (see the
POSTEMERGENCE SPRAY ADDITIVES section 11.5 of this label).
Not all of the tank mix herbicides listed are registered for field
corn or yellow popcorn. When tank mixing with this product the
minimum use rate of atrazine is 0.5 lbs ai/A and the minimum use
rate of dicamba is 0.25 lbs ai/A.
Acetochlor, atrazine, clopyralid, dicamba, diflufenzopyr,
flumetsulam, glufosinate, glyphosate, mesotrione, nicosulfuron,
primisulfuron, prosulfuron, rimsulfuron
DiFlexx (EPA Reg. No. 264-1173; dicamba), Harness (EPA Reg.
No. 524-480; acetochlor)
12.3.1 Tank mixing with Roundup ® agricultural
herbicides postemergence on corn containing
Roundup Ready® Corn 2 Technology
This product may be tank mixed with Roundup agricultural
herbicide (Honcho K6, Roundup PowerMAX, Roundup PowerMAX
II, Roundup WeatherMAX, Roundup PowerMAX 3) and applied
postemergence to corn containing Roundup Ready 2 Technology
including Roundup Ready Corn 2 from seedling emergence until
corn is 11 inches in height. Follow the use rates for this product
provided in Section 11.1. This tank mix should be applied when
weeds are 2 to 4 inches in height and before the weed height and/
or density become competitive with the crop.
Refer to the Roundup agricultural herbicide product label for
AMS and other adjuvant recommendations, use rates and
specific weeds controlled. Do not add crop oil concentrate (COC),
methylated seed oil (MSO) or urea ammonium nitrate (UAN) type
adjuvants to this tank mix or crop injury may occur.
This product may also be applied preemergence to corn containing
Roundup Ready 2 Technology including Roundup Ready Corn 2 at
the rates provided in Section 11.1 in a planned, preemergence
followed by Roundup
® agricultural herbicide postemergence,
sequential program.
For difficult to control weeds including fall panicum, barnyardgrass,
crabgrass, shattercane, broadleaf signalgrass and Pennsylvania
smartweed use the higher rate of Roundup agricultural herbicide.
For mixing instructions, see the “MIXING, SPRAYING AND
HANDLING” section of this label.
In addition to tank mixing with Roundup agricultural herbicide, this
product may be tank mixed with other labeled products including
atrazine and dicamba. It is the pesticide user’s responsibility to
ensure that all products in the listed mixtures are registered for
application postemergence to corn. Users must follow the most
restrictive directions and precautionary language of the products
in the mixture (for example, first aid from one product, spray drift
management from another).
AVOID DRIFT. EXTREME CARE MUST BE USED WHEN APPLYING THIS
TANK MIX TO PREVENT INJURY TO DESIRABLE PLANTS AND CROPS
WHICH DO NOT CONTAIN THE ROUNDUP READY GENE.
12.3.2 T ank mixing with Liberty ® herbicide
postemergence on glufosinate-resistant corn
This product may be tank mixed with Liberty herbicide and applied
postemergence to corn warranted as being tolerant to glufosinate
from seedling emergence until corn is 11 inches in height. Follow
the use rates for this product provided in Section 11.1. This tank
mix should be applied when weeds are 2 to 4 inches in height
and before the weed height and/or density become competitive
with the crop.
Refer to the Liberty product label for use rates and specific weeds
controlled postemergence. Do not add crop oil concentrate (COC),
methylated seed oil (MSO) or urea ammonium nitrate (UAN) type
adjuvants to this tank mix or crop injury may occur.
This product may also be applied preemergence to corn warranted
as being tolerant to glufosinate at the rates provided in Section
11.1 in a planned, preemergence followed by Liberty herbicide
postemergence, sequential program.
For difficult to control weeds including fall panicum, barnyardgrass,
crabgrass, shattercane, broadleaf signalgrass and Pennsylvania
smartweed use the higher rate of Liberty herbicide.
For mixing instructions, see the “MIXING, SPRAYING AND
HANDLING” section of this label.
In addition to tank mixing with Liberty, this product may be
tank mixed with other labeled products including atrazine and
dicamba. It is the pesticide user’s responsibility to ensure that
all products in the listed mixtures are registered for application
postemergence to corn. Users must follow the most restrictive
directions and precautionary language of the products in the
mixture (for example, first aid from one product, spray drift
management from another).
AVOID DRIFT. EXTREME CARE MUST BE USED WHEN APPLYING THIS
TANK MIX TO PREVENT INJURY TO DESIRABLE PLANTS AND CROPS
THAT ARE NOT DESIGNATED AS GLUFOSINATE TOLERANT.
12.4 Hard To Control Weeds
Additional amounts of Harness herbicide and/or Mesotrione
4 SC herbicide may be added to the specified treatment rates
for this product to provide improved control of hard to control
weeds. For more consistent control of woolly cupgrass, additional
Harness herbicide may be applied so that the total acetochlor
rate is 3.0 pounds a.i. per acre. For more consistent control of
common cocklebur, annual morningglory or velvetleaf, additional
mestotrione may be applied. The following table shows the
amounts of Harness herbicide and/or Mesotrione 4 SC herbicide
that can be added to specific treatment rates of this product.
APPLICATION RATE PRODUCT ADDITION
(maximum rate)
Harness MAX Herbicide
(fl oz/A)
HARNESS
(pints/A)
MESOTRIONE 4 SC
(fl oz/A)
55 1.75 3.3
64 1.4 2.5
75 1.1 1.7
81 0.9 1.3
Refer to section 12.0 for restrictions and precautions for this
product for all corn uses.
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12.5 Postemergence Spray Adjuvants
Add either non-ionic surfactant (NIS) or crop oil concentrate (COC)
when applying this product postemergence to corn (after corn has
emerged). Use a rate of 0.25% v/v (1 qt./100 gallons) when using
NIS or a rate of 1.0% v/v (1 gal./100 gals.) if using COC. COC will
provide more consistent weed control than NIS but may also result
in temporary crop injury. Use a nonionic surfactant (NIS) instead
of a crop oil concentrate (COC) for postemergence applications to
yellow popcorn to minimize the risk of crop injury.
In addition to NIS or COC, a nitrogen based adjuvant (AMS or UAN)
may also be added to increase weed control consistency. The use
of nitrogen based adjuvants will increase the risk of temporary
crop injury. Do not include nitrogen based adjuvants (AMS or
UAN) when making postemergence applications of this product
to yellow popcorn.
Postemergence applications of this product to field corn may result
in temporary crop response when the crop is suffering from stress
or under extreme weather conditions. Crop response may appear
as transient bleaching and/or chlorotic or necrotic speckling on
the tips of lower leaves. Corn quickly outgrows these effects and
typically develops normally with no effect on final yield or quality.
All yellow popcorn hybrids have not been tested and herbicide
sensitivity varies widely. Before making a postemergence
application of this product to yellow popcorn, contact your popcorn
company or University Specialist about hybrid recommendations.
Do not use methylated seed oil (MSO) with this product when
applied alone or as a postemergence tank mixture with other
products to emerged field corn (all types).
13.0 RESTRICTIONS AND PRECAUTIONS FOR ALL
CORN USES
• Do not apply this product to white popcor n, sweet corn, or
ornamental (Indian) corn.
• Do not apply mor
e than a total of 95 fl. oz. of this product
per acre per year.
• Do not e
xceed a maximum of 3 lb. a.i./A of acetochlor from
any product or combination of products containing acetochlor
per year.
•
D
o not exceed a maximum of 0.24 lb. a.i./A of mesotrione from
any product or combination of products containing mesotrione
per year.
•
Do not e
xceed a maximum of 0.19 lb. a.i./A of mesotrione
applied postemergence from any product or combination of
products containing mesotrione per acre per year.
•
Do not mak
e more than 2 applications of this product
per year (preemergence followed by postemergence or
two postemergence applications are allowed). Only one
postemergence application may be made if this product has
been applied preemergence.
• Do not mak e a second application of this product within 14 days
of the first application.
• Application of this product at r ates less than 40 fl. oz./A
postemergence may result in incomplete weed control and
loss of residual control.
• If this product is applied postemer gence to ground that received
a preemergence application of a mesotrione-containing
herbicide, it is recommended that atrazine or dicamba be tank
mixed with this product.
• Do not tank mix this product with any organophosphate or
carbamate insecticide and apply postemergence to corn or
severe corn injury may occur.
• An at-planting application of Counter ® or other
organophosphate insecticide to corn followed by Harness MAX
herbicide applied postemergence can result in severe corn
injury. There is increased risk of severity of the corn injury
when environmental conditions favor poor or slow corn growth.
•
 Applications of any or
ganophosphate or carbamate insecticide
postemergence to corn within 7 days or before 7 days after a
Harness MAX herbicide application can result in severe corn
injury. There is increased risk of severity of the corn injury when
environmental conditions favor poor or slow corn growth.
• Allo w a minimum of 60-days following last application of this
product before harvest forage, grain or stover or feeding of
corn forage to livestock.
Detailed information regarding “APPLICATION SYSTEMS” should
be carefully reviewed in conjunction with the information in this
section. If the specific information in this section differs from
the “PRODUCT INFORMATION” section, this section should take
precedence.
14.0 LIMIT OF WARRANTY AND LIABILITY
This Company warrants that this product conforms to the chemical
description on the label and is reasonably fit for the purpose set
forth in the Complete Directions for Use label booklet “Directions”)
when used in accordance with those Directions under the
conditions described therein. TO THE EXTENT CONSISTENT
WITH APPLICABLE LAW, NO OTHER EXPRESS WARRANTY OR
IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR
MERCHANTABILITY IS MADE. This warranty is also subject to the
conditions and limitations stated herein.
Buyer and all users shall promptly notify this Company of any
claims whether based in contract, negligence, strict liability, other
tort or otherwise.
To the extent consistent with applicable law, buyer and all
users are responsible for all loss, injuries or damage from use
or handling which results from conditions beyond the control of
this Company, including, but not limited to, incompatibility with
products other than those set forth in the Directions, unusual
weather, weather conditions which are outside the range
considered normal at the application site and for the time period
when the product is applied, as well as weather conditions which
are outside the application ranges set forth in the Directions,
application in any manner not explicitly set forth in the Directions,
moisture conditions outside the moisture range specified in the
Directions, or the presence of products other than those set forth in
the Directions in or on the soil, crop or treated vegetation.
This Company does not warrant any product reformulated or
repackaged from this product except in accordance with this
Company’s stewardship requirements and with express written
permission from this Company.
TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, THE
EXCLUSIVE REMEDY OF THE USER OR BUYER, AND THE LIMIT OF
THE LIABILITY OF THIS COMPANY OR ANY OTHER SELLER FOR ANY
AND ALL LOSSES, INJURIES OR DAMAGES RESULTING FROM THE
USE OR HANDLING OF THIS PRODUCT (INCLUDING CLAIMS BASED
IN CONTRACT, NEGLIGENCE, STRICT LIABILITY, OTHER TORT OR
OTHERWISE) SHALL BE THE PURCHASE PRICE PAID BY THE USER
OR BUYER FOR THE QUANTITY OF THIS PRODUCT INVOLVED, OR,
AT THE ELECTION OF THIS COMPANY OR ANY OTHER SELLER,
THE REPLACEMENT OF SUCH QUANTITY, OR, IF NOT ACQUIRED BY
PURCHASE, REPLACEMENT OF SUCH QUANTITY. TO THE EXTENT
CONSISTENT WITH APPLICABLE LAW, IN NO EVENT SHALL THIS
COMPANY OR ANY OTHER SELLER BE LIABLE FOR ANY INCIDENTAL,
CONSEQUENTIAL OR SPECIAL DAMAGES.
Upon opening and using this product, buyer and all users are
deemed to have accepted the terms of this LIMIT OF WARRANTY
AND LIABILITY which may not be varied by any verbal or written
agreement.
Bayer, Bayer Cross, DiFlexx, Honcho, Roundup PowerMAX,
Roundup Ready, Roundup Technology, Roundup Ready 2
Technology and Design, Roundup WeatherMAX and Roundup are
registered trademarks of Bayer Group.
Gramoxone is a registered trademark of a Syngenta group
company. Liberty is a trademark of BASF Corporation.
All other trademarks are the property of their respective owners.
EPA Reg. No. 524-636
In case of an emergency involving this product, call collect,
day or night, 1-800-334-7577.
©2025 Bayer Group. All rights reserved.
Packed for:
Bayer CropScience LP
800 N. Lindbergh Blvd.
St. Louis, Missouri 63167 USA
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US62211987E (170405E) HARNESS MAX NET CONTENTS: MINI BULK BASE
COLOR: CMYK
DATE: 05/15/2025
(Label Coordinator: Mark Schmidt)
EPA Est.
NET CONTENTS
     GAL US62211987E   240919E     05/25
PRECAUTIONARY STATEMENTS
Hazards to Humans and Domestic Animals
KEEP OUT OF REACH OF CHILDREN
CAUTION
Harmful if swallowed. May cause allergic skin reaction.
FIRST AID: Call a poison control center or doctor for treatment advice
IF
SWALLOWED
• Call a poison control center or doctor immediately for treatment
advice.
•
 Ha
ve person sip a glass of water if able to swallow.
•
 Do not induce vomiting unless told to do so b
y the poison control
center or doctor.
•
 Do not give anything b
y mouth to an unconscious person.
IF IN EYES • Hold ey e open and rinse slowly and gently with water for 15 to
20 minutes.
•
 Remo
ve contact lenses, if present, after the first 5 minutes then
continue rinsing eye.
•
 Call a poison control center or doctor for tr
eatment advice.
IF ON
SKIN OR
CLOTHING
• T ake off contaminated clothing.
•
 Rinse skin immediately with plenty of w
ater for 15 to 20 minutes.
•
 Call a poison control center or doctor for tr
eatment advice.
•
 Sensitized
persons should avoid further contact and reuse of
contaminated clothing.
• Ha
ve the product container or label with you when calling a poison control
center or doctor, or going for treatment.
•
 Y
ou can also call 1-800-334-7577, collect, day or night, for emergency medical
treatment information.
•
 This product is identified as Harness MAX Herbicide, EPA Registration No. 524-636.
DOMESTIC ANIMALS: This product is considered to be relatively nontoxic to dogs
and other domestic animals; however, ingestion of this product or large amounts
of freshly sprayed vegetation may result in temporary gastrointestinal irritation
(vomiting, diarrhea, colic, etc.). If such symptoms are observed, provide the animal
with plenty of fluids to prevent dehydration. Call a veterinarian if symptoms
persist for more than 24 hours.
Personal Protective Equipment (PPE)
Applicators and other handlers must wear: long-sleeved shirt and long pants,
socks and shoes, and chemical-resistant gloves made of any waterproof material
(barrier laminate, butyl rubber ≥ 14 mils, natural rubber ≥ 14 mils, neoprene rubber
≥ 14 mils, nitrile rubber ≥ 14 mils, polyethylene, polyvinyl chloride (PVC) ≥ 14 mils,
or viton ≥14 mils).
Follow manufacturer’s instructions for cleaning/maintaining PPE (Personal
Protective Equipment). If there are no instructions for washables, use detergent
and hot water. Keep and wash PPE separately from other laundry.
Engineering 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.
IMPORTANT: When reduced PPE is worn because a closed system is being used,
handlers must be provided all PPE specified above for “applicators and other
handlers” and have such PPE immediately available for use in an emergency,
including a spill or equipment breakdown.
User Safety Recommendations:
Users should:
• W ash hands thoroughly with soap and water after handling and before eating,
drinking, chewing gum, using tobacco, or using the toilet.
•
 Remo
ve clothing immediately if pesticide gets inside. Then wash thoroughly and
put on clean clothing.
• Remo ve 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
NON-TARGET ORGANISM ADVISORY STATEMENT: This product is toxic to plants and
may adversely impact the forage and habitat of non-target organisms, including
pollinators, in areas adjacent to the treated site. Protect the forage and habitat of
non-target organisms by following label directions intended to minimize spray drift.
SURFACE WATER ADVISORY: This product may impact surface water quality due
to runoff of rainwater. This is especially true for poorly draining soils and soils
with shallow ground water. This product is classified as having high potential for
reaching surface water via runoff for several weeks 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 acetochlor 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.
This product is toxic to fish. 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 cleaning equipment or disposing of equipment wash
waters and rinsate.
GROUNDWATER ADVISORY: Acetochlor and Mesotrione are known to leach through
soil into groundwater under certain conditions as a result of label use. This
chemical may leach into groundwater if used in areas where soils are permeable,
particularly where the water table is shallow.
This product has properties that may result in surface water contamination via
dissolved runoff and runoff erosion. Practices should be followed to minimize the
potential for dissolved runoff and/or runoff erosion. Do not apply when weather
conditions favor drift.
This chemical demonstrates the properties and characteristics associated with
chemicals detected in ground water. The use of this chemical in areas where
soils are permeable, particularly where the ground water is shallow, may result in
ground water contamination.
NOTICE; Read the entire Directions for Use and Conditions of Sale and Limitations
of Warranty and Liability before buying or using this product
Physical or Chemical Hazards
Spray solutions of this product may be mixed, stored and applied using stainless
steel, fiberglass, plastic or plastic-lined steel containers.
DO NOT MIX, STORE OR ALLOW THIS PRODUCT TO COME IN CONTACT WITH AN
OXIDIZING OR REDUCING AGENT INCLUDING GALVANIZED STEEL OR UNLINED
STEEL (EXCEPT STAINLESS STEEL) CONTAINERS OR SPRAY TANKS. This product
or spray solutions of this product react with such oxidizing agents to produce
hydrogen gas, which can form a highly combustible gas mixture. This gas
mixture could flash or explode if ignited by open flame, spark, welder’s torch,
lighted cigarette or other ignition source and cause serious personal injury.
DIRECTIONS FOR USE
It is a violation of Federal law to use this product in any manner inconsistent
with its labeling.
Agricultural Use Requirements
Use this product only in accordance with its labeling and with the Worker Protection
Standard, 40 CFR Part 170. Refer to labeling under “AGRICULTURAL USE REQUIREMENTS”
in the DIRECTIONS FOR USE section for information about this standard.
Storage and Disposal
Do not allow this product to contaminate water, food, or feed by storage and
disposal.
PESTICIDE STORAGE: Store pesticides away from food, pet food, feed, seed,
fertilizers, and veterinary supplies. Keep container closed to prevent spills and
contamination.
PESTICIDE DISPOSAL: To avoid wastes, use all material in this container,
including rinsate, by application in accordance with label directions. If wastes
cannot be avoided, offer remaining product to a waste disposal facility or
pesticide disposal program. Such programs are often run by state or local
governments or by industry. All disposal must be in accordance with applicable
federal, state and local regulations and procedures.
CONTAINER HANDLING AND DISPOSAL: Refillable container. Refill this container
with pesticide only. Do not reuse this container for any other purpose.
Cleaning this container before refilling is the responsibility of the refiller. Cleaning
this container before final disposal is the responsibility of the person disposing of
the container. To clean this 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 this container for recycling, if available.
To obtain information about recycling refillable containers, contact Bayer
CropScience LP at 1-866-99BAYER (1-866-992-2937).
Bayer, Bayer Cross and Harness are registered trademarks of Bayer Group.
©2025 Bayer Group. All rights reserved.
HERBICIDE
Packed for:
Bayer CropScience LP
800 N. Lindbergh Blvd.
St. Louis, Missouri 63167 USA
©2025 Bayer Group. All rights reserved.
Harness® MAX Herbicide is a broad-spectrum preemergence and
postemergence herbicide for weed control in field corn, production seed
corn, and yellow popcorn.
ACTIVE INGREDIENT:
* Acetochlor, 2-chloro-N-ethoxymethyl-N-(2-ethyl-6-methylphenyl) acetamide

.... 39.1%
** Mesotrione, 2-[4-(methysulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione

..........  3.7%
OTHER INGREDIENTS:

............................................................................................  57.2%
100.0%
* Contains 422 grams of the active ingredient acetochlor per liter or 3.52 pounds per U.S. gallon.
**
 Contains 40 g
rams of the active ingredient mesotrione per liter or 0.33 pounds per U.S. gallon.
For a list of patents, if any, covering this product or its use, please go to
https://cs.bayerpatents.bayer.com.
Other Patents Pending. No license granted under any non-U.S. patent(s).
EPA Reg. No. 524-636
KEEP OUT OF REACH OF CHILDREN
CAUTION
See inside for Complete Directions for Use.
Not for Sale, Sale into, Distribution and/or Use in Nassau and Suffolk Counties of
New York State.
FOR PRODUCT INFORMATION OR ASSISTANCE IN USING THIS PRODUCT,
CALL TOLL-FREE, 1-800-332-3111
IN CASE OF AN EMERGENCY INVOLVING THIS HERBICIDE PRODUCT, OR FOR
MEDICAL ASSISTANCE, CALL COLLECT, DAY OR NIGHT, 314-694-4000
ACETOCHLOR
MESOTRIONE
HERBICIDE
HERBICIDE
15
27GROUP
GROUP