Herbicide label

Simazine 90DF

Simazine 90DF (EPA 19713-252) is a Group 5 simazine herbicide labeled for 2 crops. The label lists 46 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Simazine 90DF label facts

Crops on the Simazine 90DF label

Simazine 90DF is labeled for these 2 crops and uses, per the EPA label.

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Weeds on the Simazine 90DF label

The Simazine 90DF label names 48 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 control46
  • alyssum
  • bassia, fivehook
  • bluegrass, annual
  • brome, downy
  • burclover
  • barnyardgrass, common
  • carelessweed
  • carpetweed
  • chickweed, common
  • crabgrass
  • rattail fescue
  • fiddleneck
  • filaree, broadleaf
  • fireweed
  • goosegrass
  • groundsel, common
  • henbit
  • junglerice
  • knawel
  • lambsquarters, common
  • prickly lettuce
  • morning glory, annual
  • mustard, tansy
  • mustard, wild
  • nightshade, black
  • wild oats
  • panicum, fall
  • pepperweed
  • pepperweed, yellowflower
  • pigweed
  • pineapple-weed
  • paintbrush, flora's
  • purslane, common
  • pusley, florida
  • ragweed, giant
  • redmaids
  • ryegrass, annual
  • shepherd's-purse
  • signalgrass
  • smartweed
  • Spanishneedles
  • speedwell
  • thistle, russian
  • witchgrass
  • foxtail
  • quackgrass

Controls with a tank-mix partner

needs partner2
  • velvetleaf
  • shattercane

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Simazine 90DF 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 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.

Simazine 90DF FAQ

What weeds does Simazine 90DF control?

The Simazine 90DF label names 48 weeds, including alyssum, fivehook bassia, annual bluegrass, downy brome, burclover, and common barnyardgrass. Control varies by crop, rate, and timing.

What crops is Simazine 90DF labeled for?

Simazine 90DF is labeled for 2 crops and uses, including field corn and sweet corn.

What is the active ingredient in Simazine 90DF? Is it a generic?

Simazine 90DF's active ingredient is simazine (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 Simazine 90DF?

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 Simazine 90DF?

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.

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Sources

Last updated 2026-07-14.