From labels and weed guides
Best herbicides for sunflower in soybeans
For sunflower in soybeans, the weed guides list 30 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for soybeans.
Sunflower control in soybeans
Every listed product is labeled for soybeans. Ratings are shown when each weed guide that rates this weed has a lower interval bound of at least 80% control for the active-ingredient group. If a guide gives a range, its lower bound must be at least 80%.
Based on 5 weed guides, 30 active-ingredient groups are rated at least 80% control for sunflower in soybeans, showing the top 12 below.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| 78623 58% Technical Solution EPA 524-532; same active ingredients on 83 other branded products | glyphosate | 9 | Ks Weed Guide 2026, ks soybean post: E → 90–100% control (FieldMarshal policy interval) (PDF); ND Weed Guide 2026: G-E → 80–99% control (PDF); Sd Soybean Weed Guide 2026, sd soybean: 9 → 90–99% control (PDF); WinField Crop Protection 2026, soybean post: E → 91–100% control (PDF) |
| Actylis Glufosinate 280SL EPA 2749-637; same active ingredients on 31 other branded products | glufosinate | 10 | ND Weed Guide 2026: E → 90–99% control (PDF); Sd Soybean Weed Guide 2026, sd soybean: 9 → 90–99% control (PDF); WinField Crop Protection 2026, soybean post, U04 rating table, pp. 16, 108, 190, 246, 264, 304, 347, 374, 390, 407, 426, 474, 518, 568: E → 91–100% control (PDF); WinField Crop Protection 2026, soybean burndown, Q17 rating table, pp. 13, 14, 16, 106, 107, 108, 459, 460: G → 81–90% control (PDF) |
| Alligare Dicamba 4 EPA 81927-55; same active ingredients on 28 other branded products | dicamba | 4 | ND Weed Guide 2026: E → 90–99% control (PDF); ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 13 other branded products | paraquat | 22 | ND Weed Guide 2026: E → 90–99% control (PDF); WinField Crop Protection 2026, soybean burndown: E → 91–100% control (PDF) |
| FIRSTSHOT SG EPA 279-9609; same active ingredients on 11 other branded products | thifensulfuron and tribenuron-methyl | 2 | WinField Crop Protection 2026, soybean burndown: G → 81–90% control (PDF) |
| Abigor EPA 34704-1174; same active ingredients on 8 other branded products | imazamox | 2 | Ia Weed Guide 2025, ia soybean post: E → 90–100% control (FieldMarshal policy interval) (PDF); Ks Weed Guide 2026, ks soybean post: E3 → 90–100% control (FieldMarshal policy interval) (PDF); ND Weed Guide 2026: E → 90–99% control (PDF); Sd Soybean Weed Guide 2026, sd soybean: 8 → 80–90% control (PDF); WinField Crop Protection 2026, soybean post: E → 91–100% control (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 → 90–99% control (PDF); Sd Soybean Weed Guide 2026, sd soybean: 7 → 80–90% control (PDF); WinField Crop Protection 2026, soybean pp pre: G/E → 81–100% control (PDF) |
| Basagran EPA 66330-413; same active ingredients on 8 other branded products | bentazon | 6 | Ia Weed Guide 2025, ia soybean post: G → 80–90% control (FieldMarshal policy interval) (PDF); Ks Weed Guide 2026, ks soybean post: G-E → 80–100% control (FieldMarshal policy interval) (PDF); ND Weed Guide 2026: E → 90–99% control (PDF); Sd Soybean Weed Guide 2026, sd soybean: 7 → 80–90% control (PDF); WinField Crop Protection 2026, soybean post: G/E → 81–100% control (PDF) |
| Ankur EPA 83529-98; same active ingredients on 7 other branded products | cloransulam-methyl | 2 | Ks Weed Guide 2026, ks soybean post: E → 90–100% control (FieldMarshal policy interval) (PDF); Ks Weed Guide 2026, ks soybean pre: E3 → 90–100% control (FieldMarshal policy interval) (PDF); ND Weed Guide 2026: E → 90–99% control (PDF); Sd Soybean Weed Guide 2026, sd soybean: 10 → 90–99% control (PDF); WinField Crop Protection 2026, soybean post: E → 91–100% control (PDF); WinField Crop Protection 2026, soybean pp pre: E → 91–100% control (PDF) |
| Authority Maxx EPA 279-9560; same active ingredients on 5 other branded products | chlorimuron and sulfentrazone | 2, 14 | Ks Weed Guide 2026, ks soybean pre: G3 → 80–90% control (FieldMarshal policy interval) (PDF); Ks Weed Guide 2026, ks soybean pre: G → 80–90% control (FieldMarshal policy interval) (PDF); WinField Crop Protection 2026, soybean pp pre: G/E → 81–100% control (PDF) |
| Classic EPA 352-436; same active ingredients on 4 other branded products | chlorimuron | 2 | Ia Weed Guide 2025, ia soybean post: E → 90–100% control (FieldMarshal policy interval) (PDF); Ks Weed Guide 2026, ks soybean post: E → 90–100% control (FieldMarshal policy interval) (PDF); Sd Soybean Weed Guide 2026, sd soybean: 9 → 90–99% control (PDF); WinField Crop Protection 2026, soybean post: E → 91–100% control (PDF) |
| Herbivore EPA 2749-528-1381; same active ingredients on 3 other branded products | halosulfuron-methyl | 2 | ND Weed Guide 2026: E → 90–99% control (PDF) |
Rating bands: E 90-100%, G 80-89%, F 70-79%, P under 70%, N none. Policy intervals are marked in the source ratings. 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. Read the rating method.
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Sources
- Ia Weed Guide 2025 (PDF)
- Ks Weed Guide 2026 (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: 2026-10-01.