Herbicide label

Paraquat Concentrate

Paraquat Concentrate (EPA 82542-3) is a Group 22 paraquat herbicide labeled for 22 crops. The label lists 34 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

“PARAQUAT CONCENTRATE is a contact herbicide for control or suppression of a broad spectrum of emerged weeds including most small annual broadleaf and grass weeds.”

— Paraquat Concentrate EPA label, Reg. No. 82542-3

Paraquat Concentrate label facts

Crops on the Paraquat Concentrate label

Paraquat Concentrate is labeled for these 22 crops and uses, per the EPA label.

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Weeds on the Paraquat Concentrate label

The Paraquat Concentrate label names 53 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.

Controls

full control34
  • barnyardgrass, common
  • bluegrass, annual
  • brome, downy
  • brome, rescue
  • chickweed
  • crabgrass
  • dogfennel
  • fiddleneck
  • foxtail
  • foxtail, giant
  • goosegrass
  • groundcherry, cutleaf
  • groundsel, common
  • henbit
  • johnsongrass, seedling
  • maids, red
  • millet, texas
  • mustard, tansy
  • wild oats
  • panicum, fall
  • pigweed
  • purslane
  • ragweed, common
  • red rice
  • rocket, london
  • ryegrass
  • ryegrass, italian
  • shepherd's-purse
  • sicklepod
  • small grain, volunteer
  • sowthistle
  • spikeweed
  • volunteer wheat
  • witchweed

Partial control

partial15
  • cocklebur, common
  • horseweed
  • knotweed
  • kochia
  • lambsquarters
  • prickly lettuce
  • mallow
  • morningglory
  • ragweed, giant
  • sedges
  • sida, prickly
  • signalgrass, broadleaf
  • smartweed, pennsylvania
  • starbur, bristly
  • velvetleaf

Suppression

suppression4
  • bindweed, hedge
  • dandelion
  • johnsongrass
  • thistle, canada

Weed indexes featuring this label

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Paraquat Concentrate rates and plant-back

The label answers both with a table, not a single number. Here is what drives each answer.

Application rate

Your rate depends on your crop.

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Plant-back and rotation

Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.

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Paraquat Concentrate FAQ

What weeds does Paraquat Concentrate control?

The Paraquat Concentrate label names 53 weeds, including common barnyardgrass, annual bluegrass, downy brome, rescue brome, chickweed, and crabgrass. Control varies by crop, rate, and timing.

What crops is Paraquat Concentrate labeled for?

Paraquat Concentrate is labeled for 22 crops and uses, including field corn, soybeans, wheat, cotton, and sunflower.

What is the active ingredient in Paraquat Concentrate? Is it a generic?

Paraquat Concentrate's active ingredient is paraquat (MOA Group 22). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.

What's the plant-back interval after Paraquat Concentrate?

It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal cites the exact interval for your rotation to the label line, so you can verify it.

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Can I tank-mix Paraquat Concentrate?

It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and cites the condition on each, so you can verify it.

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Sources

Last updated 2026-07-11.

Other registrations of Paraquat Concentrate