Herbicide label

RADAR AM 400

RADAR AM 400 (EPA 62719-3-534) is a Group 4 2,4-d herbicide labeled for 14 crops. The label lists 68 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

RADAR AM 400 label facts

Crops on the RADAR AM 400 label

RADAR AM 400 is labeled for these 14 crops and uses, per the EPA label.

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Weeds on the RADAR AM 400 label

The RADAR AM 400 label names 96 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 control68
  • beggarticks
  • bittercress, small-flowered
  • sneezeweed, bitter
  • broomweed, common
  • butdeck, common
  • buttercup, smallflowered
  • carpetweed
  • cinquefoil, common
  • cinquefoil
  • cocklebur, common
  • coffeeweed
  • copperleaf, virginia
  • croton, Texas
  • croton, woolly
  • flixweed
  • galinsoga
  • carolina geranium
  • hemp, wild
  • horseweed
  • jewelweed
  • jimsonweed
  • lambsquarters, common
  • lupines
  • marshelder
  • morning glory, annual
  • morningglory, ivy
  • morningglory, woolly
  • mousetail
  • mustards
  • parsnip, wild
  • poorjoe
  • primrose, common
  • purslane, 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
  • vetches
  • blue lettuce
  • blueweed, texas
  • broomweed
  • catnip
  • chicory
  • eveningprimrose, cutleaf
  • goldenrod
  • healal
  • ironweed, western
  • jerusalem artichoke
  • loco, bigbend
  • pennywort
  • plantain
  • sowthistle, perennial
  • waterplantain
  • wormwood
  • garlic, wild
  • onion, wild

Partial control

partial33
  • broomweed, common
  • buttercup, smallflowered
  • knotweed
  • prickly lettuce
  • mallow, little
  • mallow, venice
  • pepperweed
  • pigweed
  • smartweed, annual species
  • thistle, musk
  • thistle, russian
  • alfalfa
  • jerusalem artichoke
  • aster, many-flower
  • Austrian fieldcress
  • bindweed, hedge
  • bullnettle
  • carrot, wild
  • clover, red
  • hoary cress
  • dandelion
  • docks
  • dogbanes
  • garlic, wild
  • hawkweed, orange
  • ground ivy
  • nettles
  • onion, wild
  • ragwort, tansy
  • salsify, common
  • salsify, western
  • thistle, canada
  • vervains

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RADAR AM 400 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 and the rotational crop.

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.

RADAR AM 400 FAQ

What weeds does RADAR AM 400 control?

The RADAR AM 400 label names 96 weeds, including beggarticks, small-flowered bittercress, bitter sneezeweed, common broomweed, common butdeck, and smallflowered buttercup. Control varies by crop, rate, and timing.

What crops is RADAR AM 400 labeled for?

RADAR AM 400 is labeled for 14 crops and uses, including field corn, soybeans, wheat, barley, and sorghum.

What is the active ingredient in RADAR AM 400? Is it a generic?

RADAR AM 400'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 RADAR AM 400?

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 RADAR AM 400?

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.