From labels and weed guides
Group 2 herbicides for sunflower in soybeans
There are 10 Group 2 active-ingredient groups rated good or excellent for sunflower in soybeans, with products labeled for soybeans.
Group 2 mode of action (MOA) options
Group 2 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, 10 active-ingredient groups are rated good or excellent for sunflower in soybeans.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| FIRSTSHOT SG EPA 279-9609; same active ingredients on 11 other branded products | thifensulfuron and tribenuron-methyl | 2 | WinField Crop Protection 2026, soybean burndown: E (PDF) |
| Abigor EPA 34704-1174; same active ingredients on 8 other branded products | imazamox | 2 | Ia Weed Guide 2025, ia soybean post: E (PDF); ND Weed Guide 2026: E (PDF); Sd Soybean Weed Guide 2026, sd soybean: G (PDF); WinField Crop Protection 2026, soybean post: E (PDF) |
| Antares Prime EPA 82534-10-5905; same active ingredients on 8 other branded products | cloransulam-methyl and sulfentrazone | 2, 14 | ND Weed Guide 2026: E (PDF); Sd Soybean Weed Guide 2026, sd soybean: G (PDF); WinField Crop Protection 2026, soybean pp pre: G/E (PDF) |
| Classic EPA 352-436; same active ingredients on 4 other branded products | chlorimuron | 2 | Ia Weed Guide 2025, ia soybean post: E (PDF); Sd Soybean Weed Guide 2026, sd soybean: E (PDF); WinField Crop Protection 2026, soybean post: E (PDF) |
| Herbivore EPA 2749-528-1381; same active ingredients on 3 other branded products | halosulfuron-methyl | 2 | ND Weed Guide 2026: E (PDF) |
| Bastante Max EPA 2749-613; same active ingredients on 2 other branded products | bentazon and imazamox | 2, 6 | ND Weed Guide 2026: E (PDF) |
| Flu-Rimuron EPA 85678-48; same active ingredients on 2 other branded products | chlorimuron and flumioxazin | 2, 14 | WinField Crop Protection 2026, soybean pp pre: E (PDF) |
| Autumn Super 51 WDG EPA 264-1134 | iodosulfuron-methyl and thiencarbazone-methyl | 2 | WinField Crop Protection 2026, soybean burndown: E (PDF) |
| Fierce XLT EPA 59639-194 | chlorimuron, flumioxazin, and pyroxasulfone | 2, 14, 15 | WinField Crop Protection 2026, soybean pp pre: E (PDF) |
| Synchrony XP EPA 352-648 | chlorimuron and thifensulfuron | 2 | Sd Soybean Weed Guide 2026, sd soybean: E (PDF); WinField Crop Protection 2026, soybean post: 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
- Ia 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.