Herbicide label
Direx 4L Herbicide Label
Direx 4L (EPA 66222-54) is a Group 5 diuron herbicide labeled for 14 crops. The label lists 53 controlled weeds, plus partial-control, suppression, and partner-control categories.
Direx 4L label facts
- Product Direx 4L
- EPA Reg. No. 66222-54
- Registrant Makhteshim Agan of North America, Inc. d/b/a ADAMA
- Active ingredient diuron
- MOA group 5
Crops on the Direx 4L label
Direx 4L is labeled for these 14 crops and uses, per the EPA label.
Weeds on the Direx 4L label
The Direx 4L label names 63 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 control53- ageratum
- barnyardgrass, common
- speedwell, corn
- spurry, corn
- crabgrass
- crowfoot
- dayflower
- dogfennel
- flora's paintbrush
- foxtail
- goosegrass
- gromwell, seedling
- groundcherry
- horseweed
- johnsongrass, seedling
- knawel
- kochia
- kyllinga
- lovegrass, annual
- marigold
- mexican clover
- morning glory, annual
- orchardgrass
- panicum, fall
- pennycress, annual
- pineapple-weed
- pokeweed, common
- purslane
- rabbit tobacco
- radish, wild
- ragweed, giant
- ricegrass
- sandbur
- smartweed, annual
- sourgrass
- sowthistle, annual
- needles, spanish
- sprangletop, annual red
- tansymustard
- velvetleaf
- vernalgrass, annual sweet
- windgrass, common
- bluegrass, annual
- chickweed
- fiddleneck
- lambsquarters
- mustard, wild
- pigweed
- shepherd's-purse
- hawksbeard
- rattail fescue
- velvetgrass
- ryegrass, annual
Partial control
partial10- cocklebur, common
- guineagrass
- horsenettle
- maidencane
- nutsedge
- pangolagrass
- quackgrass
- sesbania
- sicklepod
- sida, prickly
Direx 4L 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.
Direx 4L FAQ
What weeds does Direx 4L control?
The Direx 4L label names 63 weeds, including ageratum, common barnyardgrass, corn speedwell, corn spurry, crabgrass, and crowfoot. Control varies by crop, rate, and timing.
What crops is Direx 4L labeled for?
Direx 4L is labeled for 14 crops and uses, including field corn, cotton, barley, sorghum, and alfalfa.
What is the active ingredient in Direx 4L? Is it a generic?
Direx 4L's active ingredient is diuron (MOA Group 5). 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.