crop-chem-docs/corpus/epa_ppls/19713-554.md

# DREXEL ME-TOO-LACHLOR V HERBICIDE

- EPA Reg No: **19713-554**
- Registrant: DREXEL CHEMICAL COMPANY
- Signal word: Caution
- Active ingredients: Metolachlor (84.4%)
- Label accepted: 2023-01-04
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/019713-00554-20230104.pdf

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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
 WASHINGTON, DC 20460 
 
 
 
OFFICE OF CHEMICAL SAFETY 
AND POLLUTION PREVENTION 
 
January 4, 2023 
 
Anna Hale 
Registration Manager 
Drexel Chemical Company 
P.O. Box 13327 
Memphis, TN 38113-0327 
 
Subject: Registration Review Label Amendments Incorporating Mitigation Measures from 
the Interim Decision for Metolachlor and the National Marine Fisheries Services’ 
(NMFS) Biological Opinion on the Effects of Metolachlor on Pacific Salmonids 
 Product Name: Drexel Me-Too-Lachlor V Herbicide 
 EPA Registration Number: 19713-554 
 Application Date: March 29, 2021, and July 12, 2021 
Decision Number: 572800 and 577107 
 
Dear Ms. Hale: 
 
The Agency, in accordance with the Federal Insecticide, Fungicide and Rodenticide Act 
(FIFRA), as amended, has completed reviewing all the information submitted with your 
application to support the Registration Review of the above referenced product in connection 
with the Metolachlor Interim Decision. The Agency has concluded that your submission is 
acceptable. The label referred to above, submitted in connection with registration under FIFRA, 
as amended, is acceptable. 
 
This letter also addresses the label mitigation resulting from the NMFS’ Biological Opinion on 
the effects of Metolachlor on Pacific salmonids. The Agency has concluded that your submission 
is also acceptable. The label referred to above, submitted in connection with registration under 
FIFRA, as amended, is acceptable. 
 
Should you wish to add/retain a reference to the company’s website on your label, then please be 
aware that the website becomes labeling under the Federal Insecticide Fungicide and Rodenticide 
Act and is subject to review by the Agency. If the website is false or misleading, the product 
would be misbranded and unlawful to sell or distribute under FIFRA section 12(a)(1)(E). 40 
CFR 156.10(a)(5) list examples of statements EPA may consider false or misleading. In addition, 
regardless of whether a website is referenced on your product’s label, claims made on the 
website may not substantially differ from those claims approved through the registration process. 
Therefore, should the Agency find or if it is brought to our attention that a website contains false 
or misleading statements or claims substantially differing from the EPA approved registration, 
the website will be referred to the EPA’s Office of Enforcement and Compliance.

Page 2 of 2 
EPA Reg. No. 19713-554 
Decision No. 572800 and 577107 
 
A stamped copy of your labeling is enclosed for your records. This labeling supersedes 
all previously accepted labeling. You must submit one copy of the final printed labeling 
before you release the product for shipment with the new labeling. In accordance with 40 
CFR 152.130(c), you may distribute or sell this product under the previously approved 
labeling for 12 months from the date of this letter. After 12 months, you may only 
distribute or sell this product if it bears this new revised labeling or subsequently 
approved labeling. “To distribute or sell” is defined under FIFRA section 2(gg) and its 
implementing regulation at 40 CFR 152.3. 
 
If you have any questions about this letter, please contact Carolyn Smith at 
smith.carolyn@epa.gov. 
 
 Sincerely, 
 
 
 Linda Arrington, Branch Chief 
 Risk Management and Implementation Branch 4 
 Pesticide Re-Evaluation Division 
 Office of Pesticide Programs 
 
 
 
Enclosure

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METOLACHLOR GROUP 15 HERBICIDE
For weed control in Field Corn and Popcorn.
ACTIVE INGREDIENT:
Metolachlor: 2-chloro- N-(2-ethyl-6-
methylphenyl)-N-(2-methoxy-
1-methylethyl) acetamide................................... 84.4%
OTHER INGREDIENTS: .......................................... 15.6%
TOTAL: ............................................................ 100.0%
This product contains 7.8 pounds of active ingredient per gallon.
KEEP OUT OF REACH OF CHILDREN
CAUTION
(See FIRST AID Below)
(See Side (Back) Panel for FIRST AID); 
(See Page for FIRST AID)
(See Container Labeling for (FIRST AID and) 
Complete Directions for Use)
(See (Attached) Booklet (Container Labeling) for 
Complete Directions for Use)
(SHAKE WELL BEFORE USING);
(Recirculate Contents Before Use)
EPA Reg. No. 19713-554 Net Content:
EPA Est. No. 19713-XX-X Gals. ( L)
FIRST AID
IF INHALED:
• Move person to fresh air.
• If person is not breathing, call 911 or an ambulance, then give
artificial respiration, preferably mouth-to-mouth, if possible.
IF ON SKIN OR CLOTHING:
• Take off contaminated clothing.
• Rinse skin immediately with plenty of water for 15 to 20 minutes.
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 15 minutes, then
continue rinsing eye.
IF SWALLOWED:
• Call a poison control center or doctor immediately for treatment 
advice.
• Have person sip a glass of water if able to swallow.
• Do not induce vomiting unless told to do so by a poison control 
center or doctor.
• Do not give anything by mouth to an unconscious or convulsing 
person.
Call a poison control center or doctor for treatment advice. Have 
the product container or label with you when calling a poison 
control center or doctor, or going for treatment. You may also call 
CHEMTREC at 800-424-9300 for emergency medical treatment 
information.
FOR CHEMICAL SPILL, LEAK, FIRE OR EXPOSURE CALL 
TOLL FREE 1-800-424-9300.
ENGINEERING CONTROL STATEMENTS
Mixers and loaders supporting aerial applications are required to use 
closed systems. The closed system must be used in a manner that 
meets the requirements listed in the Worker Protection Standard 
(WPS) for agricultural pesticides [40 CFR 170.240(d)(4)]. When using 
the closed system, the PPE requirements for mixers and loaders may 
be reduced or modified as specified in the WPS.
When handlers use closed systems, enclosed cabs, or aircraft in a 
manner that meets the requirements listed in the Worker Protection 
Standard (WPS) for agricultural pesticides [40 CFR 170.240(d)(4-6)], 
the handler PPE requirements may be reduced or modified as 
specified in the WPS.
ENVIRONMENTAL HAZARDS
Do not apply directly to water, to areas where surface water is present 
or to intertidal areas below the mean high water mark. Do not 
contaminate water when disposing of rinsate or equipment washwater. 
Reporting Ecological Incidents: To report ecological incidents, 
including mortality, injury, or harm to plants and animals, call (901) 
774-4370.
Groundwater Advisory
This chemical is 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 were the water table is shallow.
Surface Water Advisory
This product may impact surface water quality due to runoff of rain 
water. This is especially true for poorly draining soils and soils with 
shallow groundwater. This product is classified as having high 
potential for reaching surface water via runoff for several weeks or 
months after application. A level, well maintained, vegetative buffer 
strip between areas to which this product is applied and surface water
Manufactured By:
Drexel Chemical Company
P.O. Box 13327, Memphis, TN 38113-0327
ME-TOO-LACHLOR and the DREXEL logo are either trademarks or registered trademarks 
of Drexel Chemical Company. 554SP-0321*Pending 
ME-TOO-LACHLOR V PAGE 1 of 9
Me-Too-Lachlor 
TM 
V
Herbicide
PRECAUTIONARY STATEMENTS
Hazards to Humans and Domestic Animals 
CAUTION: Harmful if swallowed. Causes moderate eye irritation. 
Wash thoroughly with soap and water after handling and before 
eating, drinking, chewing gum, or using tobacco. Avoid contact with 
eyes or clothing. Wear protective eye wear. Wear long-sleeved shirt 
and long pants, socks, shoes and gloves.
PERSONAL PROTECTIVE EQUIPMENT (PPE)
Applicators and other handlers must wear:
• Coveralls over short-sleeved shirt and short pants
• Chemical-resistant gloves made of
barrier laminate or viton •14 mils
• Chemical-resistant footwear plus socks
• Chemical-resistant headgear for overhead exposure
• Chemical-resistant apron when cleaning equipment
Follow manufacturer’s instructions for cleaning ௘௘/௘௘maintaining PPE. 
If no such instructions for washables exist, use detergent and hot 
water. Keep and wash PPE separately from other laundry.
USER SAFETY RECOMMENDATIONS
Users should: 1) Wash hands before eating, drinking, chewing 
gum, using tobacco or using the toilet. 2) Remove clothing 
immediately if pesticide gets inside. Then wash thoroughly and put 
on clean clothing. 3) 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.
Jan 04, 2023
19713-554

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features such as ponds, streams and springs will reduce the potential 
loading of Metolachlor from runoff water and sediment. Runoff of this 
product will be reduced by avoiding application when rainfall or 
irrigation is expected to occur within 48 hours.
Mixing௘/௘Loading Instructions
Care must be taken when using this product to prevent back-siphoning 
into wells, spills, or improper disposal of excess pesticide, spray 
mixtures, or rinsates.
Check-valves or antisiphoning devices must be used on all mixing
and௘/௘or irrigation equipment.
This product may not be mixed or loaded within 50 feet of perennial 
or intermittent streams and rivers, natural or impounded lakes and 
reservoirs. This product may not be mixed௘/௘loaded or used within 5 
feet of all wells, including abandoned wells, drainage wells, and sink 
holes. 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 
spills or equipment leaks, container or equipment rinse or wash water, 
and rain water that may fall on the pad. Surface water shall not be 
allowed to either flow over or from the pad, which means the pad must 
be self-contained. The pad shall be sloped to facilitate material 
removal. An unroofed pad shall be of sufficient capacity to contain at 
a minimum 110% of the capacity of the largest pesticide container or 
application equipment on the pad. A pad that is covered by a roof of 
sufficient size to completely exclude precipitation from contact with 
the pad shall have a minimum containment capacity of 100% of the 
capacity of the largest pesticide container or application equipment 
on the pad. Containment capacities as described above shall be 
maintained at all times. The above-specified minimum containment 
capacities do not apply to vehicles when delivering pesticide 
shipments to the mixing௘/௘loading site.
NON-TARGET ORGANISMS ADVISORY
This product is toxic to plants and may adversely impact the forage 
and habitat of non-target organisms, including pollinators, in 
areas adjacent to the treated site. Protect the forage and habitat 
of non-target organisms by following label directions intended to 
minimize spray drift.
GENERAL INFORMATION
Observe all use precautions and limitations on the labels of each 
product used in tank-mixtures. Tank-mixtures are permitted only in 
those states where the tank-mix partner is registered.
Me-Too-Lachlor II is a herbicide recommended as a pre-plant surface-
applied, pre-plant incorporated, or pre-emergence treatment in water 
or fluid f ertilizer f or c ontrol o f m ost a nnual g rasses a nd certain 
broadleaf weeds in Field corn and Popcorn.
Note: Do not use in nurseries, turf, or landscape plantings. Do not 
apply under conditions which favor runoff o r w ind e rosion o f soil 
containing this product to non-target areas.
To prevent off-site movement due to runoff or wind erosion:
1) Avoid treating Powdery dry or Light sand soils when conditions 
are favorable for wind erosion. Under these conditions, the soil 
surface should first be settled by rainfall or irrigation.
2) Do not apply to impervious substrates such as paved or highly 
compacted surfaces.
3) Do not use tailwater from the first flood or furrow irrigation of 
treated fields to treat non-target crops unless at least one-half inch 
of rainfall has occurred between application and the first irrigation.
Where directions on this label specify, this product in tank-mixture 
with Atrazine formulations may be used. Follow the rates, 
recommendations, and limitations on the Atrazine product label.
Note: Certain states may have established rate limitations for Atrazine 
within specific geographical areas. Consult your state lead pesticide 
control agency for additional information. It is a violation of this label 
to deviate from state use regulations. If this product is incorporated, 
any supplemental tillage before planting must not exceed the depth of 
incorporation.
Dry weather following pre-emergence application of this product or a 
tank-mixture may reduce effectiveness. Cultivate if weeds develop. 
Where reference is made to weeds partially controlled, partial control 
can either mean erratic control from good to poor, or consistent 
control at a level below that generally considered acceptable for 
commercial weed control.
Use Precautions: Injury may occur following the use of this product 
under abnormally high soil moisture conditions during early 
development of the crop. Do not use on Peat or Muck soils. Do not 
graze or feed forage from treated areas for 30 days following 
application.
MIXING INSTRUCTIONS
This Product Alone: Mix this product with water or fluid fertilizer 
and apply as a spray. Fill the spray tank one-half to three-quarters 
full with water or fluid fertilizer, add the proper amount of this 
product, then add the rest of the water or fluid fertilizer. Provide 
sufficient agitation during mixing and application to maintain a 
uniform emulsion.
Tank-Mixtures: Fill the spray tank one-fourth full with water, and 
start agitation; add 2,4-D, Atrazine, Banvel
®, Linuron, Marksan ®, 
Prowl®, Simazine or Atrazine + Simazine, and allow it to become 
dispersed; then add this product, then add Gramoxone ® Extra, 
Landmaster ® BW, or Glyphosate if these products are being 
used; and finally the rest of the water. For tank-mixtures with 
Atrazine, Banvel, Linuron, Marksman, Prowl*, Simazine or 
Atrazine + Simazine, fluid fertilizers may replace all or part of 
the water as carrier, except in the Atrazine post-emergence 
and the Banvel post-emergence tank-mixes. For tank-mixtures 
with Atrazine, see additional mixing instructions on the Atrazine 
label. For each mixture, check compatibility with fluid fertilizer, 
as described in Appendix A of this label, before mixing in spray 
tank. For all tank-mixtures, agitate during mixing and application 
to maintain a uniform suspension.
*See Special Mixing Instructions for tank-mixtures with Atrazine or 
Simazine + Prowl under the appropriate tank-mixture section. For 
directions on how to conduct a compatibility test, see Appendix A.
DIRECTIONS FOR USE
This product is intended for use in weed control in Field corn
and Popcorn.
It is a violation of Federal law to use this product in a manner 
inconsistent with its labeling.
ENDANGERED SPECIES PROTECTION REQUIREMENTS:
It is a Federal offense to use any pesticide in a manner that results in 
an unauthorized “take” (e.g. kill or otherwise harm) of an endangered species 
and certain threatened species, under the Endangered Species Act section 
9. When using this product, you must follow the measures contained in 
the Endangered Species Protection Bulletin for the area in which you are 
applying the product. You must obtain a Bulletin no earlier than six months 
before using this product. To obtain Bulletins, consult 
http://www.epa/gov/espp/, call 1-844-447-3813, or email ESPP@epa.gov.
You must use the Bulletin valid for the month in which you will apply the product.
Do not apply this product in a way that will contact workers or other 
persons, either directly or through drift. Only protected handlers 
may be in the area during application. For any requirements 
specific to your state or tribe, consult the agency responsible 
for pesticide regulation.
FAILURE TO FOLLOW THE DIRECTIONS FOR USE AND USE 
PRECAUTIONS ON THIS LABEL MAY RESULT IN POOR WEED 
CONTROL, CROP INJURY, OR ILLEGAL RESIDUES.
HERBICIDE RESISTANCE MANAGEMENT
METOLACHLOR GROUP 15 HERBICIDE
For resistance management, this product is a Group 15 mode of 
action herbicide. Any weed population may contain or develop plants 
naturally resistant to this product and other Group 15 mode of action 
herbicides. The resistant biotypes may dominate the weed
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, such as plants, soil or water is:
• Coveralls
• Chemical-resistant gloves made of barrier laminate or viton
• Shoes plus socks

554SP-0321asteriskPending.indd 3 3/29/2021 1:46:41 PM
population if these herbicides are used repeatedly in the same 
field. Appropriate resistance management strategies should be 
followed.
ME-TOO-LACHLOR V PAGE 2 of 9

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To delay herbicide resistance, take one or more of the following 
steps:
• Rotate the use of this product or other Group 15 mode of 
action 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 such as 
hoeing or tillage. Prevent movement of resistant weed seeds 
to other fields by cleaning harvesting and tillage equipment 
when moving between fields, and planting clean seed.
• 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 
Drexel Chemical Company representatives at (901) 774-4370.
1 ) SOIL TEXTURES AND HERBICIDE RATES
Where rates are based on Coarse, Medium or Fine-textured soils, it 
is understood that soil textural classes are generally categorized as 
follows:
Coarse Medium Fine
Sand 
Loamy sand 
Sandy loam
Loam 
Silt loam 
Silt
Sandy clay loam 
Silty clay loam 
Clay loam 
Sandy clay
Silty clay 
Clay
Within rate ranges in the rate tables and elsewhere on this label, use 
the lower rate on soils relatively Coarse-textured or low in organic 
matter; use the higher rate on soils relatively Fine-textured or high 
in organic matter.
Note: This product may be applied pre-emergence alone, or 
in combination with tank-mix partners specified on this label, 
following pre-plant incorporated herbicides when used according 
to their label recommendations, provided that such use is not 
prohibited on the respective labels.
Thoroughly clean sprayer or other application device before 
using. Dispose of cleaning solution in a responsible manner. 
Do not use a sprayer or applicator contaminated with any other 
materials, or crop damage or clogging of the application device 
may result.
2 ) APPLICATION PROCEDURES 
Application Timing
This product alone or in some tank-mixtures with other labeled 
herbicides may be applied for weed control in Field corn and 
Popcorn at various times. Refer to the given crop section of 
the label to determine if application timings listed below are 
recommended.
A ) Pre-plant Surface-Applied: For minimum-tillage or no-tillage 
systems only, this product alone and some tank-mixtures of 
this product may be applied up to 45 days before planting. 
Use only split applications for treatments made 30 to 45 days 
before planting, with two-thirds the recommended broadcast 
rate for the crop and soil texture applied initially and the 
remaining one-third at planting. Treatments less than 30 days 
before planting may be made either as a split or a single 
application. If weeds are present at the time of treatment, 
apply in a tank-mixture combination with a contact herbicide 
(for example, Gramoxone Extra or Glyphosate). Observe 
directions for use, use precautions, and restrictions on the 
label of the contact herbicide. To the extent possible, do not 
move treated soil out of the row or move untreated soil to the 
surface during planting, or weed control will be diminished.
B ) Pre-plant Incorporated: Apply this product to the soil 
and incorporate into the top 2 inches of soil within 14 days 
before planting, using a finishing disk, harrow, rolling cultivator, 
or similar implement capable of providing uniform 2 inch 
incorporation. Use a pre-plant incorporated application if 
furrow irrigation is used or when a period of dry weather 
after application is expected. If Field corn and Popcorn will 
be planted on beds, apply and incorporate this product after 
bed formation, unless specified otherwise.
C ) Pre-emergence: Apply this product during planting (behind 
the planter) or after planting, but before weeds or Field corn 
and Popcorn emerge.
3 ) Special Application Procedures
A) CA Only (Field corn and Popcorn)—Pre-plant Incorporated: 
Broadcast this product alone or with tank-mix partners listed 
on this label to the soil and thoroughly incorporate with a disk 
or similar implement set to till 4 to 6 inches deep. For more 
thorough incorporation, till the soil in 2 different directions 
(cross-till). Field corn and Popcorn may be planted on flat 
surface or on beds. Caution should be used when forming the 
beds that only soil from this product’s treated zone is used 
(i.e., untreated soil should not be brought to soil surface). 
If the application is made to preformed beds, incorporate 
this product with a tillage implement set to till 2 to 4 inches 
deep. Care should be taken during tilling to keep the tilled 
(this product treated) soil on the beds.
B) Pre-emergence: Apply this product after planting. Water 
with sprinkler or flood irrigation within 7 to 10 days.
C) Fall Application (Only in IA, MN, ND, SD, WI, and 
portions of NE and IL - see specific instructions for 
timing of application and other information): Do not apply 
to frozen ground. Use on Medium and Fine soils with greater 
than 2.5% organic matter that will be planted to Field corn 
or Popcorn the next Spring. Ground may be tilled before or 
after application. Do not exceed a 2 to 3 inch incorporation 
depth if tilled after treatment. Note: If a Spring application is 
made, the total rate of the Fall plus Spring applications must 
not exceed the maximum total rate for the specific crop, or 
illegal residues may result.
D) Ground Application: Apply this product alone or in tank-
mixtures by ground equipment in a minimum of 10 gallons 
of spray mixture per acre, unless otherwise specified.
Use sprayers that provide accurate and uniform application. 
For tank-mixtures of this product with wettable powder or 
dry flowable formulations, screens and strainers should be 
no finer than 50 mesh. Rinse sprayer thoroughly with clean 
water immediately after use.
Calculate the amount of herbicide needed for band treatment by 
the formula.
band width in inches broadcast rate amount needed
row width in inches x per acre = per acre of field
Note: For information on applying in lower volumes of carrier, 
see “LOW CARRIER APPLICATION” in Appendix B.
For application by air or through center pivot systems, see 
Appendices C and D. Appendix C includes “ MANDATORY 
SPRAY DRIFT MANAGEMENT” and “ SPRAY DRIFT
ADVISORIES” sections.
For information on impregnating dry fertilizer, see Appendix E.
ME-TOO-LACHLOR V PAGE 3 of 9

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THIS PRODUCT APPLIED ALONE
1) W E E DS C O N T R O L L E D
Barnyardgrass 
(watergrass)
Bristly foxtail 
Carpetweed 
Common waterhemp 
Crabgrass 
Crowfootgrass 
Eastern black
nightshade 
Fall panicum 
Florida pusley
Foxtail millet 
Galinsoga 
Giant foxtail 
Goosegrass 
Green foxtail 
Pigweed
Prairie cupgrass 
Red rice
Robust foxtails 
(purple, white)
Signalgrass
(Brachiaria) 
Southwestern 
cupgrass
Tall waterhemp 
Wild proso millet* 
Witchgrass 
Woolly cupgrass* 
Yellow foxtail 
Yellow nutsedge
*For control of these weeds refer to the “WOOLLY CUPGRASS”
and “WILD PROSO MILLET CONTROL PROGRAM” section
of this label.
2 ) WEEDS PARTIALLY CONTROLLED*:
*See “ GENERAL INFORMATION” section. Control of these 
weeds can be erratic, due partially to variable weather 
conditions. Control may be improved by following these 
suggested procedures:
A) Use 2 to 2.67 pints per acre or the pre-plant surface-
applied rates for this product alone or in tank-mixture, 
if allowed, when making pre-plant incorporated or pre-
emergence applications.
B) Thoroughly till moist soil to destroy germinating and
emerged weeds. If this product is to be applied pre-plant 
incorporated, this tillage may be used to incorporate this 
product if uniform 2 inch incorporation is achieved as 
recommended under “APPLICATION PROCEDURES” .
C) Plant Field corn and Popcorn into moist soil immediately 
after tillage. If this product is to be used pre-emergence, 
apply at planting or immediately after planting.
D) If available, sprinkler irrigate within 2 days after application. 
Apply one-half to 1 inch of water. Use lower water volume 
(one-half inch) on Coarse-textured soils and higher volume 
(1 inch) on Fine-textured soils . Also, refer to the section 
on “ CENTER PIVOT IRRIGATION APPLICATION” for 
this method of applying this product.
E) If irrigation is not possible and rain does not occur within 
2 days after planting and application, weed control may 
be decreased. Under these conditions, a uniform, shallow 
cultivation is recommended as soon as weeds emerge.
**For partial control of this weed, use a minimum of 2 pints 
per acre and apply pre-emergence.
***For partial control of this weed, use a minimum of 2 pints 
per acre and apply through a center pivot irrigation system.
3 ) ROTATIONAL CROPS 
This Product Alone:
A) If crop treated with this product alone is lost, either Field corn
or Popcorn may be replanted immediately. Do not make a
second broadcast application of this product. If the original 
application was banded and the second crop is planted in 
the untreated row middles, a second banded treatment may 
be applied.
B) Barley, Oats, Rye, or Wheat may be planted 4.5 months 
following treatment; Alfalfa may be planted 4 months following 
application. Tomatoes may be planted 6 months following 
application.
C) Field corn and Popcorn, in addition to Barley, Buckwheat, 
Cabbage, Cotton, Peanuts, Pod crops, Potatoes, Safflower, 
Grain or Forage Sorghum, Soybeans, Milo, Oats, Peppers, 
Rice, Root crops, Rye, Tobacco, or Wheat may be planted in 
the next Spring following treatment. Clover may be seeded 
9 months following application. Do not graze or feed forage 
or fodder from Cotton to livestock.
D) Following a lay-by treatment or multiple treatments applied 
the previous season, Field corn and Popcorn in addition to 
Cabbage, Peppers or Tobacco may be planted in the Spring. 
All other rotational crops may be planted 12 months after a
lay-by application.
This Product In Tank-Mixtures:
For Rotational Crop restrictions for this product used in tank-
mixtures, refer to the statements ௘/௘restrictions above for this product 
and to the respective product labels of any mixing partner(s) for 
additional statements௘/௘restrictions.
Important Notes: To avoid injury to rotational Alfalfa or Clover:
(1) Do not apply more than 2 pounds a.i. per acre (2 pts. of this 
product) pre-emergence (including pre-plant surface, pre-plant 
incorporated, post-plant incorporated, etc.), and (2) Do not make lay-
by or other post-emergent applications of this product.
CORN (FIELD, POP) — THIS PRODUCT ALONE
Apply this product either pre-plant surface, pre-plant incorporated or 
pre-emergence using the appropriate rate specified below.
1 ) PRE-PLANT SURFACE-APPLIED
Refer to instructions for use of this product alone under
“APPLICATION PROCEDURES”.
A) Fall Application (Apply after September 30 in MN, ND, 
SD, WI and north of Route 30 in IA; Apply after October 
15 north of Route 91 in NE and south of Route 30 in IA; 
Apply after October 31 north of Route 136 in IL):
In all locations, apply to crop stubble after harvest when the 
sustained soil temperature at a 4 inch depth is less than 
55°F and falling. In minimum-till or no-tillage systems on 
soils having greater than 2.5% organic matter, use 1.67 to 
2 pints per acre on Medium-textured and 2 pints per acre 
on Fine-textured soils . Do not apply to frozen ground. A
tillage operation may precede the application. A Fall and ௘/௘or 
a Spring tillage may follow application, but do not exceed 
an incorporation depth greater than 2 to 3 inches. Minimize 
furrow and ridge formation in the tillage operations. Note: If 
a Spring application is made, the total rate of the Fall plus 
Spring applications must not exceed the maximum total rate 
for Corn, or illegal residues may result.
B) Us e on Medium and Fine-textured soils with minimum-tillage 
or no-tillage systems in CO, IA, IL, IN, KS, KY, MN, MO, 
MT, ND, NE, SD, TN, WI, and WY. Apply two-thirds of the 
recommended rate of this product (1.67 pts. ௘/௘A on Medium 
soils and 2 pts. ௘/௘Ao n Fine soils ) as a split treatment 30
to 45 days before planting and the remainder at planting. 
Applications made less than 30 days prior to planting may 
be as either a split or single treatment. Apply 1.33 pints per 
acre on Coarse soils not more than 2 weeks prior to planting.
C) O n Medium and Fine-textured soils with minimum- or no-
tillage systems in CT, DE, MA, MD, ME, MI, NH, NY, OH, 
PA, RI, VA, VT, and WV, pre-plant surface applications may 
be applied following the directions for use above. If the 
amount of rainfall results in unsatisfactory length of weed 
control following the earlier treatment, a post-emergence 
application of an appropriately labeled broadleaf and ௘/௘or grass 
weed herbicide may be used, i.e., Accent
®, Atrazine, Banvel, 
Basagran, Beacon ®, Bicep ®, Bromoxynil (Brominal ® or Buctril ®), 
Exceed®, or 2,4-D. If the post-emergence treatment includes 
the herbicide used pre-plant surface-applied, do not exceed 
the total labeled rate for Field corn and Popcorn on a given 
soil texture. Observe all directions for use, use precautions, 
and limitations on the label of the post-emergent herbicide.
2 ) PRE-PLANT INCORPORATED OR PRE-EMERGENCE 
Follow instructions for use of this product alone under Application 
Procedures . On Coarse soils , apply 1 to 1.33 pints per acre of 
this product if organic matter content is less than 3%, or 1.33 
pints per acre if organic matter content is 3% or greater. On 
Medium soils , apply 1.33 to 1.67 pints per acre of this product. 
On Fine soils , apply 1.33 to 1.67 pints per acre of this product 
if organic matter content is less than 3%, or 1.67 to 2 pints per 
acre if organic matter content is 3% or greater.
Lay-by: To extend the duration of weed control in Field corn 
and Popcorn, a maximum rate of 2 pints per acre of this product 
may be applied after Corn emergence until the Corn plants reach 
40 inches in height, following any pre-plant surface-applied, 
pre-plant incorporated, or pre-emergence herbicide application, 
including this product. For best results, applications should be 
made to soil free of emerged weeds and directed towards the 
base of Corn plants in excess of 5 inches tall. The total rate 
of this product applied on Field corn and Popcorn during any 
one crop year should not exceed 4 pints per acre, depending 
on soil texture.
ME-TOO-LACHLOR V PAGE 4 of 9
Common purslane 
Eclipta
Florida beggarweed** 
Hair
y nightshade
Sandbur
Seedling Johnsongrass 
Shattercane
Texas panicum***
Volunteer sorghum 
Wild proso millet 
Woolly cupgrass

554SP-0321asteriskPending.indd 6 3/29/2021 1:46:41 PM
Use Precautions for all applications to Corn: To avoid possible 
illegal residues, do not graze or feed forage from treated areas for 
30 days following application. Do not use on Peat or Muck soils . 
Shattercane, Wild Proso Millet, Woolly Cupgrass, and Eclipta —
Partial Control: For more consistent partial control of Shattercane, 
Wild proso millet, Woolly cupgrass, or Eclipta, apply 2 to 2.55 
pints per acre as a single application; or apply 1 to 1.33 pints 
per acre of this product pre-plant incorporated followed by 1
to 1.33 pints per acre of this product pre-emergence; however, 
do not apply more than a total of 2.55 pints per acre. Make the
pre-emergence application during or after planting, but before 
weeds and Corn emerge. Apply the 1.33 pints per acre rate 
of this product when a heavy infestation of Shattercane, Wild 
proso millet, Woolly cupgrass, or Eclipta is expected. A shallow 
cultivation may be needed to control any late emerging weeds. 
Woolly Cupgrass and Wild Proso Millet Control Program: 
For control of these species, use the following 3 step program:
1 ) Apply this product early pre-plant, pre-plant incorporated, 
or pre-emergence at 1.67 pints per acre on Medium soils 
and 2 pints per acre on Fine-textured soils up to the maximum 
label rate. Lightly incorporate with a rotary hoe if rainfall 
does not occur within 5 to 7 days.
2 ) Apply a post-emergence tank-mix of Beacon at 0.38 ounce 
per acre or Exceed at 1 packet per 4 acres plus Accent SP 
at 0.33 ounce per acre plus 1 quart of crop oil concentrate 
plus 1 gallon per acre of 28% nitrogen, or the equivalent 
amount of ammonium sulfate, when grasses are 2 to 3 inches 
tall and the Field corn and Popcorn is at least 4 inches tall.
3 ) Cultivate 14 to 21 days after the post-emergence application.
Notes:
1 ) Do not apply more than the labeled application rate for a given 
soil texture per year, either as a single or split treatment, or 
illegal residues may result.
2 ) In Field corn and Popcorn, this product may be used up to
2.75 pints per acre as either a pre-plant surface, pre-plant 
incorporated, or pre-emergence treatment on soils having 
an organic matter content between 6% and 20% or up to 2
pints per acre on any soil for extended residual control and 
where severe stands of problem weeds are expected.
3 ) In the event of escape of annual weeds following a pre-plant 
surface, pre-plant incorporated, or pre-emergence treatment 
of this product, follow with a post-emergence application of an
appropriately labeled broadleaf and ௘/௘or grass weed herbicide, 
i.e., Accent, Atrazine, Banvel, Basagran, Beacon, Bicep, 
Brominal, Buctril, Exceed, or 2,4-D. If the post-emergence 
treatment includes the herbicide used in earlier treatment, 
i.e., Atrazine, do not exceed the total labeled rate for Field 
corn and Popcorn on a given soil texture.
4 ) Brominal or Buctril may be applied post-emergence alone or in 
tank-mix combination with Atrazine. Do not exceed 1.2 pounds 
of Atrazine per acre in tank-mix combination with Brominal 
or Buctril post-emergence. Refer to the Atrazine, Brominal, 
and Buctril labels for specific rates and use precautions.
5 ) Do not use this product on Peat or Muck soils .
THIS PRODUCT IN TANK-MIXTURES*
This product in any tank-mixture for Field corn and Popcorn
(except this product + Atrazine post-emergence and this product
+ Banvel post-emergence) may be applied in water or fluid fertilizer. 
Use only water in this product + Atrazine or this product
+ Banvel post-emergence tank-mixes.
Note: For all applications to Field corn and Popcorn, do not graze or 
feed forage from treated areas for 30 days following application, or 
possible illegal residues may result.
*This product may be tank-mixed with the herbicides listed on this 
label provided the specific product(s) tank-mixed is registered for 
use on Field corn and Popcorn.
IMPORTANT: FOR TANK-MIXTURES WITH ATRAZINE — If
applying this product in tank-mixture with Atrazine, all the 
restrictions and rate limitations on the Atrazine label must 
be followed if more restrictive ௘/௘protective than those on this 
label. In addition, if Atrazine is ௘/௘must be applied at rates 
lower than those recommended on this label, broadleaf 
weed control may be affected. Refer to the Atrazine label 
for weeds controlled at the reduced rates.
Chart 1: This Product in Tank-Mixtures — Additional Weeds Controlled and Special Instructions
This Product + 
Atrazine and௘/௘or
Simazine
(Pre-plant Surface, 
PPI, PRE)
This Product +
Atrazine 
(Post)
This Product +
Banvel 
(Field Corn)
This Product + 
Atrazine + Linuron
This Product + 
Atrazine or 
Simazine + Prowl
This Product +
Marksman
Special Mixing 
Instructions 1
Comments 2, 3, 4, 5, 7,8 2, 3, 4, 5 2, 3, 4, 5, 6 2, 3, 4, 5 7
Browntop panicum X X X
Cocklebur X O O X X X
Common purslane X X X X
Hairy nightshade X X X X
Jimsonweed X O X
Kochia X X
Lambsquarters XXXXXX
Morningglory X O O X X X
Mustard X X
Pigweed XXX
Prickly sida X X
R a g w e e d XXXXXX
S m a r t w e e d XXXXXX
V e l v e t l e a f XXOXXX
X = control; O = partial control; O-X = partial to full control depending on ratio of products used or on weed population.
COMMENTS — Chart 1: This Product In Tank-Mixtures
1 ) Special Mixing Instructions for this product + Atrazine 
or Simazine and Prowl.
A) Fill the spray tank one-quarter full with water or fluid
fertilizer and start agitation.
B) To aid compatibility, add a compatibility agent, such as 
Unite or X-77®, at 4 pints per 100 gallons of spray mixture.
C) Then add the Atrazine or Simazine and allow it to become
dispersed.
D) Then add this product and Prowl 4E.
E) Add the rest of the water.
2 ) Although a single formulation for Atrazine or Simazine 
is listed in the rate tables, other formulations may be 
substituted using the following formula:
• 1 pound of Atrazine 90DF or Simazine 90DF = 1.8 pints 
of Atrazine 4L or Simazine 4L
3) Follow the rates, recommendations, and limitations on the
Atrazine label.
4) See additional mixing instructions on the Atrazine label.
ME-TOO-LACHLOR V PAGE 5 of 9

554SP-0321asteriskPending.indd 6 3/29/2021 1:46:42 PM
5 ) Use Precautions: Do not exceed a total of 2.5 pounds of 
Atrazine per acre per year. However, certain states may 
have established rate limitations for Atrazine within specific 
geographical areas. Consult your state lead pesticide control 
agency for additional information. It is a violation of this label 
to deviate from state use regulations.
6) Other formulations of Linuron can be used:
• 1 pound of Linuron DF = 1 pint of Linuron 4L
7) In Minimum-Tillage and No-Tillage systems, mix with Gramoxone 
Extra for control of most emerged annual weeds and suppression 
of perennial weeds; or with Landmaster BW for suppression 
of emerged Field bindweed and control or suppression of 
annual weeds; or with Glyphosate for control of most emerged 
annual and perennial weeds.
8) Refer to label section on specific directions for 2,4-D or 
Banvel burndown combinations in Minimum-Tillage and No-
Tillage systems.
This product in any tank-mixture for Field corn and Popcorn may
be applied in water or fluid fertilizer, except as noted.
Notes:
1) For all applications to Field corn and Popcorn, do not graze 
or feed forage from treated areas for 30 days following 
application, or possible illegal residues may result.
2) When applying this product in tank-mixture with Atrazine, 
do not exceed a total of 2.5 pounds of Atrazine per acre per 
year.
3) Refer to “ CORN (FIELD, POP) — THIS PRODUCT ALONE” , 
Note 3 for recommended sequential post-emergence treatments 
if escape weeds develop.
4) This product may be used up to 2 pints per acre in combinations 
on any soil for extended residual control and where severe 
stands of problem weeds are expected.
TANK-MIXTURE WITH ATRAZINE OR SIMAZINE, OR ATRAZINE
+ SIMAZINE — PRE-PLANT SURFACE, PRE-PLANT 
INCORPORATED OR PRE-EMERGENCE
In addition to the weeds controlled by this product alone, this 
product + Atrazine or Simazine, or this product + Atrazine +
Simazine, applied pre-plant surface, pre-plant incorporated, or 
pre-emergence, also controls the following weeds: Browntop 
panicum, Cocklebur, Common purslane, Hairy nightshade, 
Lambsquarters, Morningglory, Ragweed, Smartweed, and Velvetleaf. 
Apply this product + Atrazine or Simazine, or this product + Atrazine
+ Simazine either pre-plant surface, pre-plant incorporated, or
pre-emergence.
Pre-plant Surface-Applied: Follow instructions for use of this 
product alone under “ APPLICATION PROCEDURES” and 
under application instructions for this product alone on Field 
corn and Popcorn. Apply this product + Atrazine or Simazine, 
or this product + Atrazine + Simazine on Medium soils (1.67 
pts.௘/௘A of this product + 3.2 to 4 pts. ௘/௘A of Atrazine 4L or Simazine 
4L, or Atrazine 4L + Simazine 4L combined) and on Fine soils 
(1.67 to 2 pts. ௘/௘A of this product + 4 to 5 pts. ௘/௘A of Atrazine
4L, or Simazine 4L, or Atrazine 4L + Simazine 4L combined) 
in minimum-tillage and no-tillage systems in CO, IA, IL, IN, 
KS, KY, MN, MO, MT, ND, NE, SD, TN, WI, and WY. Apply the
tank-mixtures as a split or single treatment in those states and 
as indicated in the “ THIS PRODUCT — ALONE PRE-PLANT
SURFACE-APPLIED” section of the label for Corn. On Coarse 
soils , apply 1.33 pints per acre of this product and 3.2 pints per 
acre of Atrazine 4L or Simazine 4L, or Atrazine 4L + Simazine 
4L combined.
Pre-plant Incorporated or Pre-emergence: Follow instructions for 
use of this product alone under “ APPLICATION PROCE DURES”.
Apply this product + Atrazine or Simazine, or this product + Atrazine 
+ Simazine, using the appropriate rates from Table 1. Note: Do not 
apply more than the labeled rate for a given soil texture per year, 
either as a split or single treatment, or illegal residues may result.
Shattercane, Wild Proso Millet, Woolly Cupgrass, and Eclipta
—P a r t i a l C o n t r o l
For more consistent partial control of Shattercane, Wild proso millet, 
Woolly cupgrass, or Eclipta, where this product is applied in tank-
mixture or sequentially with other registered Field corn and Popcorn 
herbicides apply 2 to 2.33 pints as a single application or, the 
following applications may be made:
1) Apply 1 to 1.33 pints per acre of this product plus 2 pounds 
per acre of Atrazine or Simazine pre-plant incorporated, 
followed by 1 to 1.33 pints per acre of this product pre-
emergence. Make the pre-emergence application during or 
after planting, but before weeds and Corn emerge.
2) Apply this product at 1.33 pints per acre alone or in tank- 
mix combination with up to 2 pounds per acre of Atrazine 
or Simazine pre-plant incorporated. Do not exceed the total 
rate of Triazine herbicide recommended for Field corn and 
Popcorn grown on a given soil texture. Follow with a post-
directed application of Evik ® 80W at 2.5 pounds per acre 
Refer to the Evik 80W label for specific directions for the 
post-directed application.
3) Apply Eradicane ® or Sutan ® (or equivalent EPTC or butylate 
formulations) at labeled rates pre-plant incorporated, followed 
by a pre-emergence application of this product at 1 to 1.33 
pints per acre Do not use Eradicane or Sutan on soils where 
rapid degradation has been shown to occur. Make the pre-
emergence application during or after planting, but before 
weeds and Corn emerge.
Use Precaution: When following the application regimes in 
numbers 1 to 3 above, a shallow cultivation may be n eeded 
after the pre-emergence or post-emergence application to help 
control any late emerging Shattercane or Wild proso millet 
plants.
TANK-MIXTURE WITH ATRAZINE — POST-EMERGENCE
Weeds Controlled Weeds Partially 
Controlled
Barnyardgrass 
(Watergrass)
Crabgrass 
Crowfootgrass 
Fall panicum 
Giant foxtail
Green foxtail 
Jimsonweed 
Kochia 
Lambsquarters 
Mustard 
Pigweed
Prickly sida 
Purslane 
Ragweed 
Smartweed 
Velvetleaf 
Yellow foxtail
Cocklebur 
Morningglory 
Yellow nutsedge
Apply 1 pint per acre of this product + 1.3 pounds per acre
of Atrazine 90DF* on Coarse soils , 1.33 pints per acre of this 
product + 1.8 pounds per acre of Atrazine 90DF on Medium 
soils , or 1.33 to 1.67 pints per acre of this product + 1.8 to 2.2 
pounds per acre** of Atrazine 90DF on Fine soils . Apply this 
tank-mixture before grass and broadleaf weeds pass the 2 leaf 
stage and before Field corn and Popcorn exceeds 5 inches in 
height. Application to weeds larger than the 2 leaf stage will 
generally result in unsatisfactory control.
Lay-by: Apply to Field corn and Popcorn plants not more than 
12 inches tall. Applications to Corn in excess of 5 inches should 
be directed to the base of the Corn plants; whereas, applications 
to Corn plants less than 5 inches tall may be made over the top. 
Occasionally, some Corn leaf burn may result, but this should 
not affect later growth or yield. Do not apply this post-emergence 
tank-mixture in fluid fertilizer, or severe crop injury may occur.
*When using Atrazine 4L, use equivalent rates. One pound of 
Atrazine 90DF equals 1.8 pints of Atrazine 4L.
**For better control of Cocklebur, Morningglory, Velvetleaf, and 
Yellow nutsedge on Fine-textured soils above 3% organic matter, 
apply 2.2 pounds per acre of Atrazine 90DF, or equivalent rate of 
Atrazine 4L, with 1.33 to 1.67 pints per acre of this product. Tank 
mixtures of this product + Atrazine may be applied following 
use of any registered pre-plant surface-applied, pre-plant 
incorporated or pre-emergence Field corn and Popcorn 
herbicide, including this product + Atrazine.
ME-TOO-LACHLOR V PAGE 6 of 9

554SP-0321asteriskPending.indd 7 3/29/2021 1:46:42 PM
Table 1: This Product + Atrazine or Simazine, or This Product
+ Atrazine + Simazine, Pre-plant Incorporated, or Pre-emergence
— Corn (Field, Pop)
Soil Texture
Broadcast Rates Per Acre
Less Than 3% 
Organic Matter
3% Organic 
Matter or Greater
This 
Product
+ Atrazine 
90DF*
OR
Simazine 
90DF*
–O R –
This 
Product
+ Atrazine 
90DF**
+Simazine 
90DF**
This 
Product
+ Atrazine 
90DF*
OR
Simazine 
90DF*
–O R –
This 
Product
+ Atrazine 
90DF**
+Simazine 
90DF**
COARSE
0.85 to
1.0 pt.
+
1.1 to
2.2 lbs.
0.85 to
1.0 pt.
+
0.6 to
1.1 lbs.
+
0.6 to
1.1 lbs.
1.0 pt.
+
1.3 to
2.2 lbs.
1.0 pt.
+
0.7 to
1.1 lbs.
+
0.7 to
1.1 lbs.
MEDIUM
1.0 to
1.33 pts.
+
1.3 to
2.2 lbs.
1.0 to
1.33 pts.
+
0.7 to
1.1 lbs.
+
0.7 to
1.1 lbs.
1.33 pts.
+
1.8 to
2.2 lbs.
1.33 pts.
+
0.9 to
1.1 lbs
+
0.9 to
1.1 lbs.
FINE
1.33 pts.
+
1.8 to
2.2 lbs.
1.33 pts.
+
0.9 to
1.1 lbs.
+
0.9 to
1.1 lbs.
1.33 to
1.67 pts.
+
1.8 to
2.2 lbs.***
1.33 to
1.67 pts.
+
0.9 to
1.1 lbs.***
+
0.9 to
1.1 lbs.
Muck or Peat 
(soils with 
more than 
20% organic 
matter)
DO NOT USE
*Use Simazine in preference to Atrazine when heavy infestations of Crabgrass or Fall 
panicum are expected. On soils having between 6% and 20% organic matter, this 
product may be used up to 2.33 pts.௘/௘A in tank-mix combination with 2.2 lbs.௘/௘A of Atrazine 
90DF, or equivalent rates of Atrazine 4L. Refer to the Atrazine label for weeds controlled 
at this reduced rate.
**When using the tank-mixture of this product + Atrazine 90DF + Simazine 90DF, use 
equal rates of each as shown when heavy br oadleaf weed infestations are expected. 
When heavy infestations of Crabgrass or Fall panicum are expected, use a 1:2 ratio of 
Atrazine + Simazine, instead of the 1:1 ratio given in Table 1. (Example: Total Atrazine 
90DF + Simazine 90DF = 1.2 lbs. ௘/௘A, use 0.4 lb. of Atrazine + 0.8 lb. of Simazine, 
respectively.) Refer to the “ TANK-MIXTURE WITH AT RAZINE-POST-EMERGENCE” 
section for Atrazine 4L and Simazine 4L conversions.
***For Cocklebur, Yellow nutsedge, and Velvetleaf control onFine-textured soils above 3% 
organic matter, apply 2.25 lbs.௘/௘A of Atrazine 90DF, or equivalent rates of Atrazine 4L, or 
the same total amount of Atrazine + Simazine with 1.33 to 1.67 pts.௘/௘A of this product.
Note: The total rate of this product should not exceed 4 pints, 
nor more than 2.5 pounds of Atrazine rate during any one crop 
year, or illegal residues may result. Refer to the Atrazine label 
for geographic, soil-texture, and rotational restrictions.
TANK-MIXTURE WITH BANVEL
Pre-emergence: Use this tank-mixture only on Field corn which 
is flat-planted (no furrows) in CO, IA, IL, IN, KS, MN, NE, OH, 
SD, and WI.
In addition to the weeds controlled by this product alone, this product
+ Banvel, applied pre-emergence, also controls Lambsquarters, 
Ragweed, Smartweed, Cocklebur*, Jimsonweed*, Morningglory*, 
and Velvetleaf*.
*Partially controlled.
Apply this product + Banvel pre-emergence. Broadcast 1 pint 
per acre of Banvel with 1.33 pints per acre of this product on
Medium soils , or with 1.33 to 1.67 pints per acre of this product 
on Fine soils . Do not apply on Coarse soils or on soils with 
less than 2.5% organic matter. Apply this tank-mixture to the 
soil surface at planting or after planting, but before Field corn 
emerges. Plant seed at least 1.5 inches deep and apply behind 
planting equipment, avoiding incorporation by the planter wheel or 
other seed-covering device. Do not incorporate before Field corn
plants emergence. If it is necessary to rotary hoe to break the 
soil crust, do not disturb the soil more than one-half inch deep. 
Use Precautions: (1) Avoid drift to sensitive non-target plants, 
such as Soybeans, during application, or injury may occur. (2)
Do not apply with aircraft.
Post-emergence for Control of Pigweed (Mid-Atlantic states 
including DE, MD, PA, VA, and WV): Apply 1 to 1.5 pints of 
this product + one-half to 1 pint per acre of Banvel by ground 
equipment when Pigweed plants are less than 3 inches tall and
before Field corn exceeds 5 inches in height in a minimum of 
20 gallons of spray per acre. Use the lower rate on Coarse-
textured and low organic matter soils. Use the higher rate on 
Fine-textured and high organic matter soils.
Banvel SGF
® and Clarity® may be used at equivalent pounds of 
active ingredient per acre.
Use Precautions: (1) Avoid drift to sensitive non-target plants, 
such as Soybeans, during application, or injury may occur. (2) 
Do not apply with aircraft.
TANK-MIXTURE WITH ATRAZINE AND LINURON FOR CONTROL 
OF LAMBSQUARTERS AND PIGWEED
For prolonged control of Lambsquarters and Pigweed in DE, MD, 
NJ, NY, PA, VA, and WV, this product may be applied pre-
emergence in tank-mix combination with Atrazine + Linuron. Apply 
this product and Atrazine according to the rates in Table 1 and 
Linuron according to the following rates.
Soil Texture Broadcast Rate per Acre
Sandy loam (1 to 3% organic matter) 0.67 lb. Linuron
Sandy loam (3 to 6% organic matter) 1.0 lb. Linuron
Medium and Fine-textured soils 
(1 to 6% organic matter) 1.0 lb. Linuron
Observe all directions for use, use precautions, and limitations on 
this product, Atrazine and Linuron labels when applying these 
products in tank-mix combinations.
TANK-MIXTURE WITH ATRAZINE OR SIMAZINE + PROWL FOR 
PROLONGED CONTROL OF LAMBSQUARTERS AND PIGWEED 
IN FIELD CORN ONLY (NORTHEAST U.S., INCLUDING MI, IN, 
KY, AND STATES EAST OF THESE)
For prolonged control of Lambsquarters and Pigweed in addition 
to a broad spectrum of annual broadleaf and grass weeds, this 
product in tank-mix combination with Atrazine* or Simazine +
Prowl 4E may be applied after planting, but before Field corn or 
weeds emerge. Apply by ground equipment in a minimum of 10
gallons of water or 20 gallons of liquid fertilizer. Apply by air in 
a minimum of 5 gallons of water. Refer to Table 1 of this label 
for rates of this product, Atrazine, or Simazine to be applied. 
Apply Prowl 4E according to the following rates below in Table 2 .
*Do not apply this product in tank-mix combination with Atrazine 
80W + Prowl, as this combination is not compatible. Other Atrazine 
formulations may be used.
Mixing Instructions: See “ TANK-MIXTURE WITH ATRAZINE-
POST-EMERGENCE”.
Table 2: Prowl 4E — Broadcast Rates Per Acre
Soil Texture
Percent Organic Matter in Soil
Less Than 1.5% 1.5 to 3% Over 3%
COARSE 1.5 to 2.0 pts. 2.0 pts. 3.0 pts.
MEDIUM 2.0 pts. 3.0 pts. 3.0 pts.
FINE 2.0 pts. 3.0 pts. 3.0 pts.
Observe all directions for use, use precautions and limitations 
on the respective product labels when applying these products 
in tank-mix combination. Refer to the Prowl 4E label for replanting 
instructions in the event of crop loss.
TANK-MIXTURE WITH ATRAZINE, OR SIMAZINE, ATRAZINE
+ SIMAZINE, WITH GRAMOXONE EXTRA, LANDMASTER BW, 
OR GLYPHOSATE FOR MINIMUM-TILLAGE OR NO-TILLAGE 
SYSTEMS
*See “TANK-MIXTURE WITH ATRAZINE—POST-EMERGENCE”
for special mixing instructions.
In minimum-tillage or no-tillage systems where Field corn and 
Popcorn is planted directly into a cover crop, stale seedbed, 
established sod, or previous crop residues, the contact herbicides 
Gramoxone Extra, Landmaster BW, or Glyphosate may be added
ME-TOO-LACHLOR V PAGE 7 of 9

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to a tank-mix of this product, Atrazine, or Simazine, or this product
+ Atrazine + Simazine. See Comment No. 7 following Chart 1.
This product + Atrazine or Simazine, or this product + Atrazine
+ Simazine portion of the tank-mixture provides pre-emergence 
control of the weeds listed on this label in the tank-mixture section 
for “TANK-MIXTURE WITH ATRAZINE OR SIMAZINE, OR 
ATRAZINE + SIMAZINE — PRE-PLANT SURFACE, PRE- PLANT 
INCORPORATED OR PRE-EMERGENCE”.
Application: Apply before, during, or after planting, but before 
the Field corn and Popcorn emerges, at the rates specified 
below. Add Gramoxone Extra, Landmaster BW, or Glyphosate 
at the following broadcast rates:
Gramoxone Extra: 1.5 to 2, 2 to 2.5, or 2.5 to 3 pints per
acre to 1 to 3, 3 to 6, or 6 inch tall weeds, respectively. Apply 
surfactant at 1 or 2 pints per 100 gallons of spray mixture with 
75% or greater or 50 to 74% non-ionic active ingredient, 
respectively. This treatment will not control weeds taller than 6 
inches.
Note: Do not apply combinations containing Gramoxone Extra in 
suspension-type liquid fertilizers because the activity of paraquat 
will be reduced.
Landmaster BW: 27 to 54 ounces per acre depending on weed 
species and size. See the Landmaster BW label for weeds 
controlled, recommended rates for specific weeds, and other 
information concerning use.
Glyphosate: See the Glyphosate or Roundup RT label
for weeds controlled, recommended rates, and other use 
precaution directions.
Apply in 20 to 60 gallons of water or fluid fertilizer per acre
with ground equipment.
On Coarse soils, apply 1 pint per acre of this product with
1.3 pounds of Atrazine 90DF* or Simazine 90DF*, or with 0.7 pound 
of Atrazine 90DF** + 0.7 pound of Simazine 90DF**. On Medium 
soils, apply 1.33 pints per acre of this product with 1.8 pounds of 
Atrazine 90DF or Simazine 90DF, or with 0.9 pound of Atrazine
90DF + 0.9 pound of Simazine 90DF. On Fine soils***, apply 1.33 to 
1.67 pints per acre of this product with 1.8 to 2.2 pounds of Atrazine 
90DF or Simazine 90DF, or with 0.9 to 1.1 pounds of Atrazine 90DF 
+ 0.9 to 1.1 pounds of Simazine 90DF.
*Use Simazine in preference to Atrazine when heavy infestations of
Crabgrass or Fall panicum are expected.
**When using the tank-mixture of this product + Atrazine 90DF + 
Simazine 90DF, use equal rates of Atrazine and Simazine as shown 
when heavy broadleaf weed infestations are expected. When heavy 
infestations of Crabgrass or Fall panicum are expected, use a 1:2 
ratio of Atrazine + Simazine, instead of the 1:1 ratio given. (Example: 
Total Atrazine 90DF + Simazine 90DF = 1.8 lbs. ௘/௘A, use 0.6 lb.
of Atrazine + 1.2 lbs. of Simazine, respectively.) Refer to Comment 
No. 2 following Chart 1 for Atrazine 4L and Simazine 4L conversions.
***For Cocklebur, Yellow nutsedge, and Velvetleaf control on Fine-textured 
soils above 3% organic matter, apply 2.25 pounds per acre of Atrazine 90DF, 
or equivalent rate of Atrazine 4L, or the same total amount of Atrazine + 
Simazine, with 1.33 to 1.67 pints per acre of this product.
TANK-MIXTURE WITH ATRAZINE; OR ATRAZINE + 2,4-D; OR 
ATRAZINE + 2,4-D + BANVEL FOR MINIMUM-TILLAGE OR NO-
TILLAGE SYSTEMS
In minimum-tillage or no-tillage systems where Field corn and 
Popcorn is planted directly into a cover crop, stale seedbed, 
established sod, or previous crop residues, this product applied in 
combination with Atrazine will kill most emerged small annual 
weeds. Apply this product + Atrazine before, during, or after planting, 
but before Field corn and Popcorn emerges, according to the rates 
in Table 1.
Where heavy crop residues exist, add 0.8 to 1.6 pints per acre 
of an appropriately labeled 3.8 pounds a.i. per gallons of 2,4-D
amine (such as Weedar
® 64, Weedar 64A, DMA-4 Herbicide, 
or Formula 40) to the spray tank last and apply in a minimum 
of 25 gallons of carrier per acre.
As carriers, nitrogen solutions and complete liquid fertilizers, 
applied before Corn emergence, enhance burndown of existing 
weeds, and therefore, are recommended instead of water. Add 
X-77 surfactant at 1 to 2 quarts per 100 gallons of diluted spray, 
or another appropriate surfactant at its recommended rate, or 
add crop oil concentrate plus 28% liquid nitrogen (or equivalent). 
Apply before weeds exceed 3 inches in height. If Alfalfa is 
present, add Banvel to the spray mixture at 0.33 to 0.5 pint 
per acre and apply before Alfalfa exceeds 6 inches in height.
For fields with existing sod grasses (e.g., Bromegrass, Orchardgrass, 
Rye, or Timothy), when existing weeds exceed 3 inches in 
height or when very dry conditions exist, add Gramoxone Extra 
at the rate of 2.5 pints per acre in place of or in addition to 2,4-
D, as indicated above. Do not apply Gramoxone Extra in 
suspension-type liquid fertilizer. Observe all directions for use, 
use precautions, and limitations on the respective product labels 
when applying these products in tank-mix combination.
TANK-MIXTURE WITH MARKSMAN IN CONSERVATION TILLAGE
— FIELD CORN
In conservation tillage systems where Field corn is planted directly 
into a cover crop or previous crop residue, this product
+ Marksman will kill most emerged small annual weeds. Apply this 
product + Marksman before, during, or after planting, but before 
Corn emergence on Medium and Fine soils with greater than 2.5% 
organic matter. For fields with existing vegetation exceeding 3 
inches in height or when very dry conditions exist, add Gramoxone 
Extra at its standard rate. This product + Marksman may be applied 
post-emergence to Field corn less than 3 inches tall and before 
weedy grasses exceed the 2 leaf stage.
As carriers, nitrogen solutions and complete liquid fertilizers, applied 
before Corn emergence, enhance burndown of existing weeds. Do 
not apply Gramoxone Extra in suspension-type liquid fertilizer or use 
on
emerged Corn.
Refer to the Marksman label and follow all directions, limitations, use 
precautions, and information regarding application and use in Field 
Corn.
ME-TOO-LACHLOR V PAGE 8 of 9
STORAGE AND DISPOSAL
Do not contaminate water, food or feed by storage and disposal. 
PESTICIDE DISPOSAL: Open dumping is prohibited. Wastes 
resulting from the use of this product are toxic. Improper 
disposal of unused pesticide, spray mixture, or rinsate is a
violation of Federal law. Pesticide, spray mixture, or rinsate 
that cannot be used according to label instructions must be 
disposed of according to Federal, state, or local procedures. 
For guidance in proper disposal methods, contact your State 
Pesticide or Environmental Control Agency, or the Hazardous 
Waste representative at the nearest EPA Regional Office.
CONTAINER DISPOSAL: Do not reuse empty container. Triple 
rinse (or equivalent), puncture and dispose of in a sanitary landfill, 
or by incineration, or by open burning, if allowed by state and local 
authorities. Keep out of smoke from burning containers.
This product may be stored at temperatures down to 30 degrees 
below 0°F.
For minor spills, leaks, etc., follow all precautions indicated 
on this label and clean up immediately. Take special care to 
avoid contamination of equipment and facilities during cleanup 
procedures and disposal of wastes.
For Bulk and Mini Bulk Containers:
When the container is empty, replace the cap and seal all openings 
that have been opened during use; and return the container to the 
point of purchase, or to a designated location named at time of 
purchase of this product. This container must only be refilled with 
this pesticide product. DO NOT REUSE THE CONTAINER FOR 
ANY OTHER PURPOSE. Prior to
refilling, inspect carefully for damage such as cracks, punctures, 
abrasions, worn-out threads and closure devices. Check for leaks 
after refilling and before transporting. Do not transport if this 
container is damaged or leaking. If the container is damaged, 
leaking or obsolete, contact Drexel Chemical Company at 
(901) 774-4370. If not returned to the point of purchase or to 
a designated location, triple rinse emptied container and offer 
for recycling. Disposal of this container must be in compliance 
with state and local regulations.

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CONDITIONS OF SALE AND WARRANTY
Read the entire Directions for Use, Conditions, Disclaimer of 
Warranties and Limitations of Liability before using this product. If 
terms are not acceptable, return the unopened product container at 
once. By using this product, user or buyer accepts the following 
Conditions, Disclaimer of Warranties and Limitations of Liability. 
OUR RECOMMENDATIONS FOR USE of this product are based 
upon tests believed reliable. Follow directions carefully. Timing and 
method of application, weather and crop conditions, mixtures with 
other chemicals not specifically recommended and other influencing 
factors in the use of this product are beyond the control of the Seller. 
Buyer assumes all risks of use, storage and handling of this material 
not in strict accordance with directions given herewith.
In no case shall the Manufacturer or the Seller be liable for 
consequential, special or indirect damages resulting from the 
use or handling of this product when such use and ௘/௘or handling 
is not in strict accordance with directions given herewith. The 
foregoing is a condition of sale by the Seller and is accepted 
as such by the Buyer.
ME-TOO-LACHLOR and the DREXEL logo are either trademarks or registered 
trademarks of Drexel Chemical Company. All other product names, brand 
names or trademarks belong to their respective holders.
ME-TOO-LACHLOR V PAGE 9 of 9

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APPENDICES
APPENDIX A: COMPATIBILITY TEST
Since liquid fertilizers can vary, even within the same analysis, 
always check compatibility with herbicide(s) each time before 
use. Be especially careful when using complete suspension 
or fluid fertilizers, as serious compatibility problems are more 
likely to occur. Commercial application equipment may improve 
compatibility in some instances. The following test assumes a
spray volume of 25 gallons per acre. For other spray volumes, 
make appropriate changes in the ingredients. Check compatibility 
using this procedure:
1. Add 1 pint of fertilizer to each of 2 one-quart jars with tight
lids.
2. To one of the jars, add one-quarter teaspoon or 1.2 milliliters 
of a compatibility agent approved for this use, such as Compex 
or Unite (one-quarter tsp. is equivalent to 2 pts. ௘/௘100 gals. 
spray). Shake or stir gently to mix.
3. To both jars, add the appropriate amount of herbicide(s). 
If more than one herbicide is used, add them separately
with dry herbicides first, flowables next, and emulsifiable 
concentrates last. After each addition, shake or stir gently 
to thoroughly mix. The appropriate amount of herbicides for 
this test follows:
Dry herbicides: For each pound to be applied per acre, 
add 1.5 level teaspoons to each jar.
Liquid herbicides: For each pint to be applied per acre, 
add one-half teaspoon or 2.5 mi lliliters to each jar.
Note: For this product in tank-mixtures with Atrazine + Simazine, 
use one-third to one-half the amount of Atrazine specified above 
and the remainder as Simazine, depending on whether the 1:2 
or 1:1 ratio of Atrazine to Simazine is to be applied.
4. After adding all ingredients, put lids on and tighten, and invert 
each jar 10 times to mix. Let the mixtures stand 15 minutes 
and then look for separation, large flakes, precipitates, gels, 
heavy oily film on the jar, or other signs of incompatibility. 
Determine if the compatibility agent is needed in the spray 
mixture by comparing the 2 jars. If either mixture separates, 
but can be remixed readily, the mixture can be sprayed as long 
as good agitation is used. If the mixtures are incompatible, 
test the following methods of improving compatibility: (A) 
slurry the dry herbicide(s) in water before addition, or (B) 
add one-half of the compatibility agent to the fertilizer and 
the other one-half to the emulsifiable concentrate or flowable 
herbicide before addition to the mixture. If incompatibility is 
still observed, do not use the mixture.
APPENDIX B: LOW CARRIER APPLICATION
For Broadcast Ground Application Only
Use sprayers, such as Ag-Chem RoGator ®, Hagie, John Deere 
Hi-Cycle™, Melroe Spra-Coupe, Tyler Patriot™, or Willmar 
Air Ride ®, that provide accurate and uniform application. Only 
water may be used as a carrier . Screens in suction and in-line 
strainers should be 50 mesh. Manufacturers may require that 
tip screens as fine as 100 mesh be used with some nozzles.
Use a pump with capacity to: (1) maintain up to 35 to 40 psi at 
the nozzles, and (2) provide sufficient agitation in tank to keep 
mixture in suspension. Use a minimum of 5 gallons of spray 
mixture per acre. Maximum recommended sprayer speed is 15
mph. Rinse sprayer thoroughly with clean water immediately 
after each use.
Note: Low pressure nozzles are recommended to reduce drift 
and increase application accuracy. Care should be taken when 
using automatic rate controlling devices to spray the material 
within the rated working pressure and flow ranges of the nozzles 
selected. Nozzle screens should be used when recommended 
by the manufacturer. All nozzles should be placed on 20 inch 
centers, except flooding types which should be placed on 40 
inch centers. When Flat Fan-type nozzles are used, angles 
of 80° or 110° are recommended. Always read and follow the 
manufacturer’s directions for optimum setup and performance 
of their nozzles or tips.
APPENDIX C: AERIAL APPLICATION
Apply this product in water alone or in tank-mixtures with Atrazine, 
or Linuron in a minimum total volume of 2 gallons per acre by 
aircraft. This product may also be applied by air in combination 
with Prowl. Avoid application under conditions where uniform
coverage cannot be obtained or where excessive spray drift may 
occur. To assure that spray will not adversely affect adjacent 
sensitive non-target plants, apply this product alone or this 
product + Atrazine by aircraft at a minimum upwind distance of 
400 feet from sensitive plants, or apply this product + Linuron 
at a minimum upwind distance of 300 feet from sensitive plants. 
Avoid application to humans or animals. Flagmen and loaders 
should avoid inhalation of spray mist and prolonged contact 
with skin.
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
Volume - Increasing the spray volume so that larger droplets 
are produced will reduce spray drift. Use the highest practical 
spray volume for the application. If a greater spray volume is 
needed, consider using a nozzle with a higher flow rate.
Pressure - 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. 
Controlling Droplet Size – Aircraft
Adjust Nozzles - Follow nozzle manufacturers’ recommendations for 
setting up nozzles. Generally, to reduce fine droplets, nozzles 
should be oriented parallel with the airflow in flight.
BOOM HEIGHT – Ground Boom
For ground equipment, the boom should remain level with the crop 
and have minimal bounce.
ME-TOO-LACHLOR V PAGE 10 of 9
MANDATORY SPRAY DRIFT MANAGEMENT
GROUND BOOM APPLICATIONS:
• User must only apply with the release height recommended by the 
manufacturer, but no more than 4 feet above the ground or crop 
canopy.
• Applicators are required to select the nozzles and pressure that
deliver medium or coarser droplets (ASABE S572).
• Do not apply when wind speeds exceed 15 miles per hour at the 
application site.
• Do not apply during temperature inversions.
BOOMLESS GROUND APPLICATIONS:
• Applicators are required to select the nozzle and pressure that 
deliver medium or coarser droplet size (ASABE S572.3) for all 
applications.
• Do not apply when wind speeds exceed 15 miles per hour at the 
application site.
• Do not apply during temperature inversions.
AERIAL APPLICATIONS:
• Do not release spray at a height greater than 10 feet above the 
ground or vegetative canopy, unless a greater application height is 
necessary for pilotsafety.
• Applicators are required to select the nozzle and pressure that
deliver medium or coarser droplets (ASABE S641).
• If the wind speed is 10 miles per hour or less, applicators must use 
one-half swath displacement upwind at the downwind edge of the 
field. When the wind speed is between 11 to 15 miles per hour, 
applicators must use three-fourths swath displacement upwind at 
the downwind edge of the field.
• Do not apply when wind speeds exceed 15 miles per hour at the 
application site. If the wind speed is greater than 10 mph, the boom 
length must be 65% or less of the wingspan for fixed wing aircraft 
and 75% or less of the rotor diameter for helicopters. Otherwise, 
the boom length must be 75% or less of the wingspan for fixed-
wing aircraft and 90% or less of the rotor diameter for helicopters.
• Do not apply during temperature inversions.

554SP-0321asteriskPending.indd 11 3/29/2021 1:46:42 PM
RELEASE HEIGHT - Aircraft
Higher release heights increase the potential for spray drift.
SHIELDED SPRAYERS
Shielding the boom or individual nozzles can reduce spray 
drift. Consider using shielded sprayers. Verify that the shields 
are not interfering with the uniform deposition of the spray on 
the target area.
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.
BOOMLESS GROUND APPLICATIONS
Setting nozzles at the lowest effective height will help to reduce
the potential for spray drift.
HANDHELD TECHNOLOGY APPLICATIONS
Take precautions to minimize spray drift.
APPENDIX D: CENTER PIVOT IRRIGATION APPLICATION
This product alone in tank-mixture with other herbicides on this 
label, which are registered for center pivot application, may be
applied in irrigation water pre-emergence (after planting, but 
before weeds or crop emerge) at rates recommended on this 
label. This product also may be applied post-emergence to the 
Field corn crop or Popcorn crop and pre-emergence to weeds 
in Field corn or Popcorn where post-emergence applications are 
allowed on this label. Follow all restrictions (height, timing, rate, 
etc.) to avoid illegal residues. Apply this product only through 
a center pivot irrigation system. Do not apply this product 
through any other type of irrigation system. Crop injury, lack 
of effectiveness, or illegal pesticide residues in the crop can 
result from non-uniform distribution of treated water. If you have 
questions about calibration, you should contact State Extension 
specialists, equipment manufacturers, or other experts. Do not 
connect an irrigation system (including greenhouse systems) 
used for pesticide application to a public water system, unless 
the pesticide label-prescribed safety devices for public water 
systems are in place. A person knowledgeable of the chemigation 
system and responsible for its operation, or under the supervision 
of the responsible person, shall shut down the system and make 
the necessary adjustments should the need arise.
Operating Instructions
1 . The system must contain a functional check-valve, vacuum 
relief valve, and low-pressure drain appropriately located on 
the irrigation pipeline to prevent water-source contamination 
from backflow.
2 . The pesticide injection pipeline must contain a functional, 
automatic, quick-closing check-valve to prevent the flow of 
fluid back toward the injection pump.
3. The pesticide injection pipeline must also contain a functional, 
normally closed, solenoid-operated valve located on the 
intake side of the injection pump and connected to the 
system interlock to prevent fluid from being withdrawn 
from the supply tank when the irrigation system is either 
automatically or manually shut down.
4 . The system must contain functional interlocking controls to 
automatically shut off the pesticide injection pump when the 
water pump motor stops.
5 . The irrigation line or water pump must include a functional 
pressure switch which will stop the water pump motor when 
the water pressure decreases to the point where pesticide 
distribution is adversely affected.
6 . Systems must use a metering pump, such as a positive 
displacement injection pump (e.g., diaphragm pump or piston 
pump), effectively designed and constructed of materials 
that are compatible with pesticides and capable of being 
fitted with a system interlock.
7 . Do not apply when wind speed favors drift beyond the area 
intended for treatment.
8 . Prepare a mixture with a minimum of 1 part of water to 1
part herbicide(s) and inject this mixture into the center pivot 
system. Injecting a larger volume of more dilute mixture 
per hour will usually provide more accurate calibration of 
metering equipment. Maintain sufficient agitation to keep 
the herbicide in suspension.
9 . Meter into irrigation water during entire period of water 
application.
1 0 . Apply in one-half to 1 inch of water. Use the lower water 
volume (one-half inch) on Coarse-textured soils and the 
higher volume (1 inch) on Fine-textured soils . More than 
1 inch of water at application may reduce weed control by 
moving the herbicide below the effective zone in the soil.
Use Precautions: for center pivot applications: Where sprinkler 
distribution patterns do not overlap sufficiently, unacceptable weed 
control may result. Where sprinkler distribution patterns overlap 
excessively, crop injury may result.
APPENDIX E: DRY BULK GRANULAR FERTILIZERS
Many dry bulk granular fertilizers may be impregnated or coated 
with this product alone or selected tank-mixtures of this product 
which are registered for pre-plant incorporated or pre-plant 
surface application which are used to control weeds in crops 
on this product label and are not prohibited from use on dry 
bulk granular fertilizers.
When applying this product or this product mixtures with dry bulk 
granular fertilizers, follow all directions for use and use precautions 
on the respective product labels regarding Field corn and Popcorn, 
rates per acre, soil texture, application methods (including timing of 
application), and rotational crops.
All individual state regulations relating to dry bulk granular 
fertilizer blending, registration, labeling, and application are
the responsibility of the individual and ௘/௘or company selling the 
herbicide ௘/௘fertilizer mixture.
Prepare the herbicide ௘/௘fertilizer mixtures by using any closed drum, 
belt, ribbon, or other commonly used dry bulk fertilizer blender. 
Nozzles used to spray this product and this product mixtures onto 
the fertilizer must be placed to provide uniform spray coverage. Care 
should be taken to aim the spray directly onto the fertilizer only and 
to avoid spraying the walls of the blender.
If the herbicide ௘/௘fertilizer mixture is too wet, add a highly absorptive 
material, such as Agsorb ® or Celatom MP-79 ®, or similar granular 
clay or diatomaceous earth materials, to obtain a dry, free-
flowing mixture. Absorptive materials should be added only after 
the herbicide has been thoroughly blended into the fertilizer 
mixture. Best application results will be obtained by using a
granule of six-thirtieth particle size or of a size similar to that 
of the fertilizer material being used. Generally, less than 2% by 
weight of absorptive material will be needed. Avoid using more 
than 5% absorptive material by weight.
Calculate amounts of this product, Atrazine, Atrazine + Simazine or 
Simazine by the following formula:
2,000
lbs. of fertilizer per acre x
pts.௘/௘A of liquid
or flowable 
product
=
pints of liquid or 
flowable product per 
ton of fertilizer
2,000
lbs. of fertilizer per acre x lbs.௘/௘A of dry
product = pounds of dry product
per ton of fertilizer
Pneumatic (Compressed Air) Application (This Product Alone): 
High humidity, high urea concentrations, low fertilizer use rates, 
and dusty fertilizer may cause fertilizer mixture to build up or 
plug the distributor head, air tubes, or nozzle deflector plates. To
minimize buildup, premix this product with Exxon Aromatic 200 
at a rate of 1 to 4 pints per gallon of this product. Aromatic 200 
is a noncombustible ௘/௘nonflammable petroleum product. Aromatic 
200 may be used in either a fertilizer blender or through direct 
injection systems. Drying agents should not be used when 
using Aromatic 200.
ME-TOO-LACHLOR V PAGE 11 of 9

554SP-0321asteriskPending.indd 12 3/29/2021 1:46:42 PM
Notes: (1) Mixtures of this product and Aromatic 200 must 
be used on dry fertilizer only. Poor results or crop injury may 
result if these mixtures are used in water or liquid fertilizer 
solutions for spraying applications. (2) When impregnating this 
product in a blender before application, a drier mixture can be 
attained by substituting a drying agent for Aromatic 200. The 
use of Agsorb FG or drying agents of six-thirtieth particle size 
are recommended. (3) Drying agents are not recommended for 
use with the On-The-Go impregnation equipment.
Use Precautions: To avoid potential for explosion, (1) Do not 
impregnate this product or this product mixtures on ammonium 
nitrate, potassium nitrate, or sodium nitrate, either alone or in 
blends with other fertilizers. (2) Do not use this product or this 
product mixtures on straight limestone, since absorption will 
not be achieved. Fertilizer blends containing limestone can be 
impregnated.
Application
Apply 200 to 700 pounds of the herbicide ௘/௘fertilizer mixture per 
acre. For best results, apply the mixture uniformly to the soil
with properly calibrated equipment immediately after blending. 
Uniform application of the herbicide ௘௘/௘௘fertilizer mixture is essential 
to prevent possible crop injury. Non-uniform application may also 
result in unsatisfactory weed control. In areas where conventional 
tillage is practiced, a shallow incorporation of the mixture into the 
soil may improve weed control. On Fine or Medium-textured soils 
in areas where soil incorporation is not planned, i.e., reduced 
tillage situations or in some conventional till situations, make 
applications approximately 30 days before planting to allow 
moisture to move the herbicide ௘/௘fertilizer mixture into the soil. 
On Coarse-textured soils , make applications approximately 14 
days prior to planting.
Use Precaution: To avoid crop injury, do not user the 
herbicide௘/௘fertilizer mixture on Field corn and Popcorn where bedding 
occurs.
ME-TOO-LACHLOR and the DREXEL logo are eit her trademarks or regi stered trademarks 
of Drexel Chemical Company. All other pr oduct names, brand names or trademarks belong 
to their respective holders.
ME-TOO-LACHLOR V PAGE 12 of 9