Herbicide label
D-638 Herbicide Label
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.
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.
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
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.
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.
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.
Sources
Last updated 2026-09-30.