Herbicide label

D-638

D-638 (EPA 42750-36) is a Group 4 2,4-d herbicide labeled for 12 crops. The label lists 90 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

D-638 label facts

Product D-638
EPA Reg. No. 42750-36
Registrant Albaugh, LLC
Active ingredient 2,4-d
MOA group 4

Crops on the D-638 label

D-638 is labeled for these 12 crops and uses, per the EPA label.

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Weeds on the D-638 label

The D-638 label names 91 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 control90

alfalfa
jerusalem artichoke
aster, many-flower
beggarticks
bindweed, european
bindweed, field
bindweed, hedge
bittercress, small-flowered
blueweed, texas
broomweed, common
bullnettle
burdock
buttercup, smallflowered
camelthorn
carrot, wild
catnip
cattail
chicory
cinquefoil, common
cinquefoil
cocklebur, common
coffeeweed
copperleaf, virginia
hoary cress
croton, texas
croton, woolly
dandelion
dock
dogbane
evening primrose, common
eveningprimrose, cutleaf
fieldcress, austrian
fleabane, rough
galinsoga
garlic, wild
carolina geranium
goldenrod
heal-all
horseweed
ground ivy
ironweed, western
jimsonweed
knapweed, russian
knotweed
lambsquarters, common
lettuce, blue
prickly lettuce
lettuce, wild
lotus
mallow, little
mallow, venice
marshelder
morningglory, common
morningglory, ivy
morningglory, woolly
mousetail
mustard
mustard, wild
nettle
stinging nettle
nutgrass
onion, wild
parsnip, wild
pennycress, field
pepperweed
pigweed
plantain
purslane, common
radish, wild
ragweed, common
ragweed, giant
ragwort, tansy
salsify, common
salsify, western
smartweed, annual
sowthistle, annual
sowthistle, perennial
sowthistle, spiny
speedwell
spurge, leafy
sunflower
sweetclover, annual yellow
thistle, bull
thistle, canada
thistle, musk
thistle, russian
tule
velvetleaf
vervain
vetch

Partial control

partial1

clover, red

Suppression

suppression7

bindweed, hedge
cocklebur, common
dogbane
jimsonweed
ragweed, giant
sunflower
velvetleaf

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D-638 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 and your soil texture.

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Plant-back and rotation

Your interval depends on your application rate and the rotational crop.

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D-638 FAQ

What weeds does D-638 control?

The D-638 label names 91 weeds, including alfalfa, jerusalem artichoke, many-flower aster, beggarticks, european bindweed, and field bindweed. Control varies by crop, rate, and timing.

What crops is D-638 labeled for?

D-638 is labeled for 12 crops and uses, including field corn, soybeans, wheat, barley, and sorghum.

What is the active ingredient in D-638? Is it a generic?

D-638'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 D-638?

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 D-638?

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.