Herbicide label
Weedone 638
Weedone 638 (EPA 71368-3) is a Group 4 2,4-d herbicide labeled for 8 crops. The label lists 84 controlled weeds, plus partial-control, suppression, and partner-control categories.
Build the herbicide program for your field
Tell FieldMarshal your crop, weeds, and rotation. Get back a complete program, products, rates, plant-back, and tank-mix, with every line checked against the label so you can verify it yourself.
Built from 1,700+ EPA herbicide labels and 49 state weed-control guides. Made for crop advisors and growers.
Free to create your account. Every line references the label, so you can check it against the source.
Weedone 638 label facts
- Product Weedone 638
- EPA Reg. No. 71368-3
- Registrant Nufarm, Inc.
- Active ingredient 2,4-d
- MOA group 4
Crops on the Weedone 638 label
Weedone 638 is labeled for these 8 crops and uses, per the EPA label.
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Weedone 638 label
The Weedone 638 label names 86 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 control84- alfalfa
- aster, many-flower
- beggarticks
- bindweed, european
- bindweed, field
- bindweed, hedge
- bittercress, small-flowered
- broomweed, common
- burdock
- buttercup, smallflowered
- carrot, wild
- catnip
- cattail
- chicory
- cinquefoil, common
- cinquefoil
- clover, red
- cocklebur, common
- coffeeweed
- copperleaf, virginia
- cress, austrian field
- hoary cress
- croton, texas
- croton, woolly
- dandelion
- docks
- dogbanes
- evening primrose, common
- eveningprimrose, cutleaf
- fleabane, rough
- galinsoga
- garlic, wild
- carolina geranium
- goldenrod
- ground ivy
- hawkweed, orange
- horseweed
- ironweed, western
- jerusalem-artichoke
- jimsonweed
- knapweed, russian
- knotweed
- lambsquarters, common
- lettuce, blue
- prickly lettuce
- lettuce, wild
- mallow, little
- mallow, venice
- marshelder
- morningglory, common
- morningglory, ivy
- morningglory, woolly
- mousetail
- mustards
- mustard, wild
- stinging nettle
- nettles
- nutgrass
- onion, wild
- parsnip, wild
- pennycress, field
- pepperweeds
- pigweed
- plantain
- purslane, common
- radish, wild
- ragweed, common
- ragweed, giant
- ragwort, tansy
- smartweeds, annual species
- sowthistle, annual
- sowthistle, perennial
- sowthistle, spiny
- spurge, leafy
- sunflower
- sweetclover, annual yellow
- thistle, bull
- thistle, canada
- thistle, musk
- thistle, russian
- tule, hard-stem bulrush
- velvetleaf
- vervains
- vetches
Partial control
partial14- bittercress, small-flowered
- buttercup, smallflowered
- cinquefoil, common
- cinquefoil
- clover, red
- copperleaf, virginia
- eveningprimrose, cutleaf
- carolina geranium
- horseweed
- mousetail
- mustard, wild
- pennycress, field
- purslane, common
- speedwell
Suppression
suppression7- bindweed, field
- cocklebur, common
- dogbane
- jimsonweed
- ragweed, giant
- sunflower
- velvetleaf
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Weedone 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.
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.
Weedone 638 FAQ
What weeds does Weedone 638 control?
The Weedone 638 label names 86 weeds, including alfalfa, many-flower aster, beggarticks, european bindweed, field bindweed, and hedge bindweed. Control varies by crop, rate, and timing.
What crops is Weedone 638 labeled for?
Weedone 638 is labeled for 8 crops and uses, including field corn, soybeans, wheat, barley, and sorghum.
What is the active ingredient in Weedone 638? Is it a generic?
Weedone 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 Weedone 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.
Build a program →Can I tank-mix Weedone 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.
Build a program →Plan in minutes, not hours.
Start with Weedone 638 and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-14.