Herbicide label
Gamma
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.
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“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.
Need the rate or timing for one of these? Filter every label by your crop, free.
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, mouse-ear
- 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
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
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, the rotational crop, and your state, region, and rainfall — some intervals differ in AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.
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.
What's the plant-back interval after Gamma?
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.
Build a program →Can I tank-mix Gamma?
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.
Build a program →Plan in minutes, not hours.
Start with Gamma and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
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Sources
Last updated 2026-07-14.