From labels and weed guides
Best herbicides for common ragweed in cotton
For common ragweed in cotton, the weed guides list 7 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for cotton.
Common Ragweed control in cotton
Every listed product is labeled for cotton. 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 3 weed guides, 7 active-ingredient groups are rated at least 80% control for common ragweed in cotton.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Alligare Dicamba 4 EPA 81927-55; same active ingredients on 34 other branded products | dicamba | 4 | ND Weed Guide 2026: E → 90–99% control (PDF); WinField Crop Protection 2026, cotton: 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: G-E → 80–99% control (PDF); WinField Crop Protection 2026, cotton: E → 91–100% control (PDF) |
| BLASTWAVE 240 EC EPA 103087-15; same active ingredients on 13 other branded products | oxyfluorfen | 14 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 13 other branded products | paraquat | 22 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Herbivore EPA 2749-528-1381; same active ingredients on 5 other branded products | halosulfuron-methyl | 2 | ND Weed Guide 2026: E → 90–99% control (PDF); ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Fever Prime EPA 89167-87-89391; same active ingredients on 2 other branded products | glufosinate and metolachlor | 10, 15 | Ks Weed Guide 2026, ks cotton post: G → 80–90% control (FieldMarshal policy interval) (PDF) |
| Sharpen EPA 7969-278 | saflufenacil | 14 | ND Weed Guide 2026: G-E → 80–99% 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
Data from current labels and weed guides. Last source update: 2026-09-30.