Herbicide label
GCS Quinclo 4 Herbicide Label
GCS Quinclo 4 (EPA 94730-26) is a Group 4 quinclorac herbicide labeled for 6 crops. The label lists 26 controlled weeds, plus partial-control, suppression, and partner-control categories.
GCS Quinclo 4 label facts
- Product GCS Quinclo 4
- EPA Reg. No. 94730-26
- Registrant Generic Crop Science, LLC
- Active ingredient quinclorac
- MOA group 4
Crops on the GCS Quinclo 4 label
GCS Quinclo 4 is labeled for these 6 crops and uses, per the EPA label.
Weeds on the GCS Quinclo 4 label
The GCS Quinclo 4 label names 40 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 control26- barnyardgrass, common
- crabgrass, large
- morningglory
- morningglory, cypressvine
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, palmleaf
- morningglory, pitted
- morningglory, purple moonflower
- morningglory, tall
- signalgrass, broadleaf
- bedstraw, catchweed
- bindweed, field
- bindweed, hedge
- clover species
- volunteer flax
- foxtail, giant
- foxtail, green
- foxtail, yellow
- prickly lettuce
- spurge, leafy
- thistle, canada
- eclipta
- jointvetch
- junglerice
- sesbania, hemp
Partial control
partial1- alligatorweed
Suppression
suppression9- dandelion
- kochia
- lambsquarters, common
- ragweed, common
- ragweed, giant
- sowthistle, perennial
- sunflower, wild
- thistle, russian
- velvetleaf
Controls with a tank-mix partner
needs partner4- cocklebur, common
- dayflower
- nutsedge, yellow
- sprangletop
GCS Quinclo 4 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.
GCS Quinclo 4 FAQ
What weeds does GCS Quinclo 4 control?
The GCS Quinclo 4 label names 40 weeds, including common barnyardgrass, large crabgrass, morningglory, cypressvine morningglory, entireleaf morningglory, and ivyleaf morningglory. Control varies by crop, rate, and timing.
What crops is GCS Quinclo 4 labeled for?
GCS Quinclo 4 is labeled for 6 crops and uses, including wheat, sorghum, rice, fallow, and grass seed.
What is the active ingredient in GCS Quinclo 4? Is it a generic?
GCS Quinclo 4'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.