From labels and weed guides
Best herbicides for witchgrass in field corn
For witchgrass in field corn, the weed guides list 30 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for field corn.
Witchgrass control in field corn
Every listed product is labeled for field corn. 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 2 weed guides, 30 active-ingredient groups are rated at least 80% control for witchgrass in field corn, showing the top 12 below.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| 78623 58% Technical Solution EPA 524-532; same active ingredients on 82 other branded products | glyphosate | 9 | Ks Weed Guide 2026, ks corn post: E → 90–100% control (FieldMarshal policy interval) (PDF); Mi Weed Guide 2026 Corn, mi corn post trait glyphosate: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Brawl EPA 100-816-55467; same active ingredients on 35 other branded products | metolachlor | 15 | Mi Weed Guide 2026 Corn, mi corn soil applied: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Bicep II Magnum EPA 100-817; same active ingredients on 15 other branded products | atrazine and metolachlor | 5, 15 | Ks Weed Guide 2026, ks corn pre grid20: E → 90–100% control (FieldMarshal policy interval) (PDF); Mi Weed Guide 2026 Corn, mi corn soil premix: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Artemis EPA 83100-48-91395; same active ingredients on 8 other branded products | mesotrione and metolachlor | 15, 27 | Mi Weed Guide 2026 Corn, mi corn soil premix: E → 90–100% control (FieldMarshal policy interval) (PDF); Mi Weed Guide 2026 Corn, mi corn soil premix p4: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Enlist Duo EPA 62719-649; same active ingredients on 3 other branded products | 2,4-d and glyphosate | 4, 9 | Mi Weed Guide 2026 Corn, mi corn post trait enlist: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Orador EPA 91234-324; same active ingredients on 3 other branded products | acetochlor, clopyralid, and mesotrione | 4, 15, 27 | Ks Weed Guide 2026, ks corn pre grid20: E → 90–100% control (FieldMarshal policy interval) (PDF); Mi Weed Guide 2026 Corn, mi corn soil premix p4: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Accent EPA 352-560; same active ingredients on 2 other branded products | nicosulfuron | 2 | Mi Weed Guide 2026 Corn, mi corn post: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Corsican EPA 7969-279-55467; same active ingredients on 2 other branded products | dimethenamid-p and saflufenacil | 14, 15 | Ks Weed Guide 2026, ks corn pre grid21: E → 90–100% control (FieldMarshal policy interval) (PDF); Mi Weed Guide 2026 Corn, mi corn soil premix p4: G → 80–90% control (FieldMarshal policy interval) (PDF) |
| Double Header EPA 34704-1099; same active ingredients on 2 other branded products | acetochlor and mesotrione | 15, 27 | Ks Weed Guide 2026, ks corn pre grid20: E → 90–100% control (FieldMarshal policy interval) (PDF); Mi Weed Guide 2026 Corn, mi corn soil premix: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| DuPont Steadfast EPA 352-608; same active ingredients on 2 other branded products | nicosulfuron and rimsulfuron | 2 | Mi Weed Guide 2026 Corn, mi corn post premix: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Equip EPA 83100-57-83979; same active ingredients on 2 other branded products | mesotrione and rimsulfuron | 2, 27 | Mi Weed Guide 2026 Corn, mi corn post premix: G → 80–90% control (FieldMarshal policy interval) (PDF) |
| Anthem ATZ EPA 279-3449; same active ingredients on 1 other branded product | atrazine, fluthiacet-methyl, and pyroxasulfone | 5, 14, 15 | Ks Weed Guide 2026, ks corn pre grid20: E → 90–100% control (FieldMarshal policy interval) (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.