Herbicide label

Direx 4L

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.

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Official EPA label (PDF)

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.

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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
bluegrass, annual
barnyardgrass, common
chickweed
speedwell, corn
spurry, corn
crabgrass
crowfoot
dayflower
dogfennel
fiddleneck
flora's paintbrush
foxtail
goosegrass
gromwell, seedling
groundcherry
hawksbeard
horseweed
johnsongrass, seedling
knawel
kochia
kyllinga
lambsquarters
lovegrass, annual
marigold
mexican clover
morning glory, annual
mustard, wild
orchardgrass
panicum, fall
pennycress, annual
pigweed
pineapple-weed
pokeweed, common
purslane
rabbit tobacco
radish, wild
ragweed, giant
rattail fescue
ricegrass
ryegrass, annual
sandbur
shepherd's-purse
smartweed, annual
sourgrass
sowthistle, annual
spanishneedles
sprangletop, annual red
tansymustard
velvetgrass
velvetleaf
vernalgrass, annual sweet
windgrass, common

Partial control

partial11

cocklebur, common
guineagrass
horsenettle
maidencane
morning glory, annual
nutsedge
pangolagrass
quackgrass
sesbania
sicklepod
sida, prickly

Suppression

suppression2

rattail fescue
windgrass, common

Controls with a tank-mix partner

needs partner2

johnsongrass, seedling
nutsedge

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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 and your soil texture.

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Plant-back and rotation

Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AR, CA, CO, FL, HI, ID, KS, LA, MO, MS, NM, OK, OR, TN, TX, and WA.

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, annual bluegrass, common barnyardgrass, chickweed, corn speedwell, and corn spurry. 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.

What's the plant-back interval after Direx 4L?

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 Direx 4L?

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.