From labels and weed guides
Group 4 herbicides for wild oats in barley
There are 3 Group 4 active-ingredient groups rated good or excellent for wild oats in barley, with products labeled for barley.
Group 4 mode of action (MOA) options
Group 4 is a herbicide mode of action (MOA) group. Treat it as one resistance-management check, not as the whole program.
Every listed product is labeled for barley. Ratings are shown when each weed guide that rates this weed stays at good or excellent for the active-ingredient group. If a guide gives a range, the weaker end of the range has to be good or excellent.
Based on 1 weed guide, 3 active-ingredient groups are rated good or excellent for wild oats in barley.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Imitator + 2,4-D EPA 19713-635; same active ingredients on 2 other branded products | 2,4-d and glyphosate | 4, 9 | ND Weed Guide 2026: E (PDF) |
| Axial Star EPA 100-1389 | fluroxypyr 1-methylheptyl ester and pinoxaden | 1, 4 | ND Weed Guide 2026: Ea (PDF) |
| Rezuvant EPA 62719-750 | fluroxypyr 1-methylheptyl ester, halauxifen-methyl, and pinoxaden | 1, 4 | ND Weed Guide 2026: Ea (PDF) |
Rating legend: E=excellent, G=good, F=fair, P=poor, N=no control. A range such as G-E means the guide gives a range; 'a' after a rating (e.g., Ga) means the guide assumes its recommended additive.
Build the full program
Check crop, timing, state, resistance, and rotation in one plan before you make a recommendation.
Sources
Data from current labels and weed guides. Last source update: 2026-07-14.