Herbicide label
Bison Herbicide Label
Bison (EPA 71368-28-1381) is a Group 4 and 6 bromoxynil and mcpa herbicide labeled for 7 crops. The label lists 54 controlled weeds, plus partial-control, suppression, and partner-control categories.
“This product is a selective postemergence herbicide for control of important broadleaf weeds infesting small grains (wheat, barley, oats, rye), conservation reserve program areas, and grass grown for seed.”
Bison label facts
- Product Bison
- EPA Reg. No. 71368-28-1381
- Distributor WinField Solutions, LLC
- Active ingredient bromoxynil and mcpa
- MOA group 4 and 6
Crops on the Bison label
Bison is labeled for these 7 crops and uses, per the EPA label.
Weeds on the Bison label
The Bison label names 58 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 control54- buckwheat, tartary
- buckwheat, wild
- cockle, cow
- cocklebur, common
- fiddleneck
- lambsquarters, common
- marshelder
- mustard, black
- mustard, tumble
- mustard, wild
- nightshade, black
- nightshade, cutleaf
- nightshade, eastern black
- nightshade, hairy
- nightshade, silverleaf
- pennycress, field
- pepperweed
- pigweed, redroot
- pigweed, smooth
- pigweed, spiny
- rocket, london
- rocket, yellow
- shepherd's-purse
- smartweed, green
- smartweed, pennsylvania
- sowthistle, annual
- sunflower
- tarweed, common
- thistle, russian
- waterhemp, common
- chamomile, corn
- fumitory
- groundsel, common
- gromwell, corn
- henbit
- jimsonweed
- knawel
- kochia
- knotweed, prostrate
- ladysthumb
- mayweed
- morningglory, ivyleaf
- morningglory, tall
- mustard, blue
- mustard, tansy
- poppy, horned
- puncturevine
- radish, wild
- ragweed, common
- ragweed, giant
- sage, lanceleaf
- sesbania, hemp
- tarweed
- velvetleaf
Suppression
suppression1- thistle, canada
Controls with a tank-mix partner
needs partner3- chickweed
- filaree, broadleaf
- wild oats
Bison 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.
Bison FAQ
What weeds does Bison control?
The Bison label names 58 weeds, including tartary buckwheat, wild buckwheat, cow cockle, common cocklebur, fiddleneck, and common lambsquarters. Control varies by crop, rate, and timing.
What crops is Bison labeled for?
Bison is labeled for 7 crops and uses, including wheat, barley, oats, cereal rye, and grass seed.
What is the active ingredient in Bison? Is it a generic?
Bison's active ingredient is bromoxynil and mcpa (MOA Group 4 and 6). 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.