From labels and weed guides
Group 3 herbicides for common barnyardgrass in soybeans
There are 3 Group 3 active-ingredient groups rated good or excellent for common barnyardgrass in soybeans, with products labeled for soybeans.
Group 3 mode of action (MOA) options
Group 3 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 soybeans. 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 4 weed guides, 3 active-ingredient groups are rated good or excellent for common barnyardgrass in soybeans.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Acumen EPA 241-337-55467; same active ingredients on 17 other branded products | pendimethalin | 3 | Ms Weed Guide 2025, ms soybean pre: E (PDF); ND Weed Guide 2026: E (PDF); Sd Soybean Weed Guide 2026, sd soybean: E (PDF); WinField Crop Protection 2026, soybean pp pre: E (PDF) |
| Aceto Trifluralin 4EC EPA 2749-561; same active ingredients on 13 other branded products | trifluralin | 3 | ND Weed Guide 2026: E (PDF); Sd Soybean Weed Guide 2026, sd soybean: E (PDF); WinField Crop Protection 2026, soybean pp pre: E (PDF) |
| Sonalan HFP EPA 10163-356 | ethalfluralin | 3 | ND Weed Guide 2026: E (PDF); Sd Soybean Weed Guide 2026, sd soybean: E (PDF); WinField Crop Protection 2026, soybean pp pre: 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
- Ms Weed Guide 2025 (PDF)
- ND Weed Guide 2026 (PDF)
- Sd Soybean Weed Guide 2026 (PDF)
- WinField Crop Protection 2026 (PDF)
Data from current labels and weed guides. Last source update: 2026-07-14.