Herbicide label

Zurax L Herbicide Label

Zurax L (EPA 66222-283) is a Group 4 quinclorac herbicide labeled for 4 crops. The label lists 16 controlled weeds, plus partial-control, suppression, and partner-control categories.

“Zurax L is an auxin agonist classified as a quinoline carboxylic acid, is a systemic herbicide with plant uptake through both foliage and roots.”

— Zurax L EPA label, Reg. No. 66222-283

Zurax L label facts

Crops on the Zurax L label

Zurax L is labeled for these 4 crops and uses, per the EPA label.

Weeds on the Zurax L label

The Zurax L label names 36 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 control16
  • barnyardgrass, common
  • crabgrass, large
  • eclipta
  • jointvetch, indian
  • jointvetch, northern
  • junglerice
  • morningglory
  • sesbania, hemp
  • signalgrass, broadleaf
  • bedstraw, catchweed
  • clover species
  • volunteer flax
  • foxtail, giant
  • foxtail, green
  • foxtail, yellow
  • prickly lettuce

Partial control

partial1
  • alligatorweed

Suppression

suppression13
  • bindweed, field
  • bindweed, hedge
  • dandelion
  • kochia
  • lambsquarters, common
  • ragweed, common
  • ragweed, giant
  • sowthistle, perennial
  • spurge, leafy
  • sunflower, wild
  • thistle, canada
  • thistle, russian
  • velvetleaf

Controls with a tank-mix partner

needs partner6
  • cocklebur, common
  • dayflower
  • nutsedge, yellow
  • red rice
  • rice, feral
  • sprangletop

Zurax L 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.

Zurax L FAQ

What weeds does Zurax L control?

The Zurax L label names 36 weeds, including common barnyardgrass, large crabgrass, eclipta, indian jointvetch, northern jointvetch, and junglerice. Control varies by crop, rate, and timing.

What crops is Zurax L labeled for?

Zurax L is labeled for 4 crops and uses, including wheat, sorghum, rice, and durum wheat.

What is the active ingredient in Zurax L? Is it a generic?

Zurax L's active ingredient is quinclorac (MOA Group 4). 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.