Herbicide label

Defy LV-4

Defy LV-4 (EPA 66222-219) is a Group 4 2,4-d herbicide labeled for 12 crops. The label lists 60 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Defy LV-4 label facts

Crops on the Defy LV-4 label

Defy LV-4 is labeled for these 12 crops and uses, per the EPA label.

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Weeds on the Defy LV-4 label

The Defy LV-4 label names 92 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 control60
  • sneezeweed, bitter
  • burdock
  • buttercup, smallflowered
  • carpetweed
  • cocklebur, common
  • coffeeweed
  • croton, Texas
  • croton, woolly
  • flixweed
  • galinsoga
  • hemp, wild
  • jewelweed
  • jimsonweed
  • knotweed
  • kochia
  • lambsquarters, common
  • lettuce, wild
  • lupines
  • marshelder
  • morning glory, annual
  • morningglory, ivy
  • morningglory, woolly
  • mustards (except blue mustard)
  • parsnip, wild
  • pennycress (fanweed)
  • pigweeds (Amaranthus spp.)
  • poorjoe
  • primrose, common
  • pusley, florida
  • radish, wild
  • ragweed, common
  • ragweed, giant
  • rape, wild
  • rocket, yellow
  • shepherd's-purse
  • sicklepod
  • sowthistle, annual
  • sowthistle, spiny
  • spanishneedles
  • sunflower
  • sweetclover
  • tansymustard
  • thistle, bull
  • velvetleaf
  • jerusalem artichoke
  • blue lettuce
  • blueweed, texas
  • broomweed
  • catnip
  • chicory
  • clover, red
  • goldenrod
  • healal
  • loco, bigbend
  • pennywort
  • plantain
  • sowthistle, perennial
  • wormwood
  • garlic, wild
  • onion, wild

Partial control

partial36
  • beggarticks
  • bittercress, small-flowered
  • broomweed, common
  • cinquefoil, common
  • cinquefoil
  • prickly lettuce
  • mallow, little
  • mallow, venice
  • pepperweeds (Lepidium spp.)
  • smartweed (annual species)
  • salsify, common
  • salsify, western
  • thistle, musk
  • thistle, Russian (tumbleweed)
  • alfalfa
  • jerusalem artichoke
  • aster, many-flower
  • Austrian fieldcress
  • bindweed, hedge
  • bindweed, field
  • bindweed, European
  • bullnettle
  • carrot, wild
  • clover, red
  • hoary cress
  • dandelion
  • docks
  • dogbanes
  • garlic, wild
  • hawkweed, orange
  • ground ivy
  • nettles (including stinging)
  • onion, wild
  • ragwort, tansy
  • thistle, canada
  • vervains

Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.

Defy LV-4 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.

Get the rate for your field: build a program and FieldMarshal gives you the exact per-acre rate for your crop from the label line.

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, 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.

Get the interval for your rotation: build a program and FieldMarshal gives you the exact plant-back for your rotational crop from the label line.

Defy LV-4 FAQ

What weeds does Defy LV-4 control?

The Defy LV-4 label names 92 weeds, including bitter sneezeweed, burdock, smallflowered buttercup, carpetweed, common cocklebur, and coffeeweed. Control varies by crop, rate, and timing.

What crops is Defy LV-4 labeled for?

Defy LV-4 is labeled for 12 crops and uses, including field corn, soybeans, wheat, barley, and sorghum.

What is the active ingredient in Defy LV-4? Is it a generic?

Defy LV-4's active ingredient is 2,4-d (MOA Group 4). 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 Defy LV-4?

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

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Can I tank-mix Defy LV-4?

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 gives the condition on each, so you can verify it.

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Sources

Last updated 2026-07-14.