Herbicide label
Gamma Herbicide Label
Gamma (EPA 71512-36-74530) is a Group 14 tiafenacil herbicide labeled for 1 crops. The label lists 13 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Gamma is classified as a Group 14 herbicide and is rapidly absorbed by emerged, actively growing, and susceptible green plant tissue. Once Gamma is absorbed by green plant tissue, inhibition of protoporphyrinogen oxidase (PPO) results in rapid disintegration and drying of plant tissue.”
Gamma label facts
- Product Gamma
- EPA Reg. No. 71512-36-74530
- Distributor Helm Agro US, Inc.
- Active ingredient tiafenacil
- MOA group 14
Crops on the Gamma label
Gamma is labeled for these 1 crops and uses, per the EPA label.
Weeds on the Gamma label
The Gamma label names 44 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 control13- volunteer canola
- deadnettle, purple
- groundsel, cressleaf
- henbit, common
- lambsquarters, common
- morningglory spp
- wild oats
- pennycress, field
- sida, prickly
- ragweed, common
- sesbania, hemp
- shepherd's-purse
- velvetleaf
Partial control
partial10- amaranth, palmer
- clover, white
- dandelion, common
- eveningprimrose, cutleaf
- pigweed, redroot
- purslane, common
- swinecress
- thistle, russian
- vetch
- waterhemp, common
Suppression
suppression19- barley, little
- barnyardgrass, common
- buttercup spp
- chickweed, common
- chickweed, mouseear
- crabgrass spp
- dock, curly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- carolina geranium
- goosegrass
- horseweed
- johnsongrass, seedling
- kochia
- radish, wild
- rye, volunteer
- shattercane
- volunteer wheat
Controls with a tank-mix partner
needs partner2- bluegrass, annual
- corn, volunteer
Gamma 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.
Gamma FAQ
What weeds does Gamma control?
The Gamma label names 44 weeds, including volunteer canola, purple deadnettle, cressleaf groundsel, common henbit, common lambsquarters, and morningglory spp. Control varies by crop, rate, and timing.
What crops is Gamma labeled for?
Gamma is labeled for 1 crops and uses, including fallow.
What is the active ingredient in Gamma? Is it a generic?
Gamma's active ingredient is tiafenacil (MOA Group 14). 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.