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Diuron 4L Herbicide

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Diuron 4L Herbicide (generic Karmex IWC 4L) by Alligare LLC is formulated to target annual and perennial grasses and herbaceous weeds in crops. Diuron 4L may also be used for pre-emergent and post-emergent control in non-crop areas.

Target Pests

In crop areas Diuron 4L can be used for the control of barnyardgrass crabgrass lambsquarters pigweed purslane ragweed cocklebur morningglory sesbania sicklepod bluegrass groundcherry chickweed dogfennel fiddleneck foxtail rattail fescue dayflower horseweed johnsongrass marigold sandbur and many other listed weeds.

For Use In

Diuron 4L Herbicide is for use in crop areas for selective weed control and in non-crop areas such as rights-of-way pipline utility sites storage areas highways and many other non-crop sites.


For ground application in Texas mix at a rate of 1.6 to 3.2 quarts per acre for annual weed control. Use 3.2 quarts per acre for control of seedling Johnsongrass. Spring treatments provide the user with the best results.

Do not apply more than 3.2 quarts per acre application and not to exceed the maximum amount of 6.4 quarts per acre per year.

For selective weed control in crops refer to label for specific crops and state usage.

Coverage Area

Each 2.5 gallon container of Diuron 4L Herbicide will treat approximately 2 acres if applied at the maximum rate for an annual application.

Time to Kill

Diuron 4L Herbicide begins to kill target weeds 2 weeks after contact but can take up to several weeks for complete control all depending on treatment area and application.

Mix Rate

1lb per acre

Active Ingredient

Diuron 40.7%

Diuron 4L Herbicide

Product Q & A

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Browse 4 questions Browse 4 questions and 4 answers
How much do I add for a 4 gallon backpack sprayer?
A shopper on Sep 17, 2018
BEST ANSWER: You can use 1 ounce per gallon of water to cover about 500 square feet of area.
Can I use it as a permerge for peanuts?
A shopper on May 20, 2018
BEST ANSWER: The Diuron 4L Herbicide would not be used as a pre-emergent when planting peanuts.
Is this product effective against chara (muskgrass or nitella subsurface algea in stocked fish ponds that are at or above 70 F.
Larry on Jul 7, 2017
BEST ANSWER: Diuron 4L is not labeled for use in aquatic areas. https://www.solutionsstores.com/aquashade-aquatic-herbicide would be recommend product for controlling chara algae.
Will this kill cattails
Bill on Oct 20, 2016
BEST ANSWER: https://www.solutionsstores.com/glyphosate-5-4-aquatic-herbicide

I would recommend using this aquatic herbicide to kill Cattails.

Customer Reviews

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1 Star
Great product, good price, arrived damaged
Ordered one 2.5 gal container. Should have ordered 2. Instead of shipping in the original 2 x 2.5 cardboard box it was repacked with foam peanuts in another box. Arrived damaged. Neck severely bent. No THIS SIDE UP stamp on the box. Not a good way to handle or ship chemicals and glad it did not pop open in transit. Had to use a crowbar to straighten it out which then had to be rinsed off causing chemical exposure and rinsate problems. Strongly suggest you only order 2.5 gallons containers in quantities of 2.
May 14, 2012

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