Herbicide label
Weedar 64
Weedar 64 (EPA 71368-1) is a Group 4 2,4-d herbicide labeled for 17 crops. The label lists 103 controlled weeds, plus partial-control, suppression, and partner-control categories.
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Weedar 64 label facts
- Product Weedar 64
- EPA Reg. No. 71368-1
- Registrant Nufarm, Inc.
- Active ingredient 2,4-d
- MOA group 4
Crops on the Weedar 64 label
Weedar 64 is labeled for these 17 crops and uses, per the EPA label.
- field corn
- soybean
- wheat
- potato
- barley
- sorghum
- rice
- durum wheat
- oats
- cereal rye
- triticale
- popcorn
- sweet corn
- wild rice
- sugarcane
- fallow
- grass seed
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Weedar 64 label
The Weedar 64 label names 115 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 control103- alfalfa
- jerusalem artichoke
- aster, many-flower
- austrian fieldcress
- beggarticks
- bindweed, european
- bindweed, field
- bindweed, hedge
- bittercress, small-flowered
- sneezeweed, bitter
- blue lettuce
- blueweed, texas
- broomweed
- broomweed, common
- burdock
- buttercup, smallflowered
- carpetweed
- carrot, wild
- catnip
- chicory
- cinquefoil, common
- cinquefoil
- clover, red
- cocklebur, common
- coffeeweed
- copperleaf, virginia
- hoary cress
- croton, texas
- croton, woolly
- dandelion
- dock, broadleaf
- docks
- dogbanes
- eveningprimrose, cutleaf
- fleabane, rough
- flixweed
- galinsoga
- garlic, wild
- carolina geranium
- goldenrod
- hawkweed, orange
- heal-all
- hemp, wild
- horseweed
- ground ivy
- jewelweed
- jimsonweed
- knotweed
- kochia
- lambsquarter, common
- prickly lettuce
- lettuce, wild
- lupines
- mallow, little
- mallow, venice
- marshelder
- morning glory, annual
- morningglory, common
- morningglory, ivy
- morningglory, woolly
- mousetail
- mustards
- nettles
- onion, wild
- parsnip, wild
- pennycress, field
- pennywort
- pepperweeds
- pigweed
- plantain
- poorjoe
- primrose, common evening
- purslane, common
- pusley, florida
- radish, wild
- ragweed, common
- ragweed, giant
- ragwort, tansy
- rape, wild
- rocket, yellow
- salsify, common
- salsify, western
- shepherd's-purse
- sicklepod
- smartweed
- snotted catsear
- sowthistle, annual
- sowthistle, perennial
- sowthistle, spiny
- needles, spanish
- speedwell
- sunflower
- sweetclover
- mustard, tansy
- thistle, bull
- thistle, canada
- thistle, musk
- thistle, russian
- velvetleaf
- vervains
- vetches
- water plantain, common
- wormwood
Partial control
partial18- bassia, fivehook
- bindweed, hedge
- fleabane, annual
- fleabane, flaxleaf
- fiddleneck, broom
- kochia
- lambsquarter
- prickly lettuce
- mustard, blue
- pigweed, redroot
- quackgrass
- ragweed, common
- ragweed, giant
- smartweed, pennsylvania
- sowthistle, annual
- sunflower
- thistle, russian
- velvetleaf
Suppression
suppression2- brome, smooth
- fescue, tall
Controls with a tank-mix partner
needs partner1- balsam apple
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Weedar 64 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 MN.
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.
Weedar 64 FAQ
What weeds does Weedar 64 control?
The Weedar 64 label names 115 weeds, including alfalfa, jerusalem artichoke, many-flower aster, austrian fieldcress, beggarticks, and european bindweed. Control varies by crop, rate, and timing.
What crops is Weedar 64 labeled for?
Weedar 64 is labeled for 17 crops and uses, including field corn, soybeans, wheat, potato, and barley.
What is the active ingredient in Weedar 64? Is it a generic?
Weedar 64'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 Weedar 64?
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 Weedar 64?
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.
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Sources
Last updated 2026-07-14.