From labels and weed guides
Group 27 herbicides for horseweed in cereal rye
There are 2 Group 27 active-ingredient groups rated good or excellent for horseweed in cereal rye, with products labeled for cereal rye.
Group 27 mode of action (MOA) options
Group 27 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 cereal rye. 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 2 weed guides, 2 active-ingredient groups are rated good or excellent for horseweed in cereal rye.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Huskie EPA 264-1023 | bromoxynil and pyrasulfotole | 6, 27 | Ms Weed Guide 2025, ms small grain: E (PDF); ND Weed Guide 2026: G-E (PDF) |
| Huskie FX EPA 264-1208 | bromoxynil, fluroxypyr 1-methylheptyl ester, and pyrasulfotole | 4, 6, 27 | ND Weed Guide 2026: G-E (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.