From labels and weed guides
Best herbicides for morningglory in field corn
For morningglory in field corn, the weed guides list 20 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for field corn.
Morningglory 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 4 weed guides, 20 active-ingredient groups are rated at least 80% control for morningglory in field corn, showing the top 12 below.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| 2,4-D Amine 4 EPA 1381-103; same active ingredients on 77 other branded products | 2,4-d | 4 | Ms Weed Guide 2025, ms corn post: 9 → 90–100% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms corn post preharvest: 9 → 90–100% control (FieldMarshal policy interval) (PDF) |
| Alligare Dicamba 4 EPA 81927-55; same active ingredients on 35 other branded products | dicamba | 4 | Ks Weed Guide 2026, ks corn post: G-E → 80–100% control (FieldMarshal policy interval) (PDF); Ks Weed Guide 2026, ks corn post: G → 80–90% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms corn post: 9 → 90–100% control (FieldMarshal policy interval) (PDF) |
| AAtrex 4L EPA 100-497; same active ingredients on 31 other branded products | atrazine | 5 | Ks Weed Guide 2026, ks corn post: E → 90–100% control (FieldMarshal policy interval) (PDF); Ks Weed Guide 2026, ks corn pre grid20: G → 80–90% control (FieldMarshal policy interval) (PDF); Ky Weed Guide 2025, ky corn preemergence: 8 → 80–90% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms corn pre: 8 → 80–90% control (FieldMarshal policy interval) (PDF); Tn Weed Guide 2026, tn corn soil applied: 7 → 80–90% control (FieldMarshal policy interval) (PDF) |
| Actylis Glufosinate 280SL EPA 2749-637; same active ingredients on 31 other branded products | glufosinate | 10 | Ms Weed Guide 2025, ms corn post: 9 → 90–100% control (FieldMarshal policy interval) (PDF) |
| AIM EC EPA 279-3241; same active ingredients on 12 other branded products | carfentrazone-ethyl | 14 | Ks Weed Guide 2026, ks corn post: E → 90–100% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms corn post preharvest: 8 → 80–90% control (FieldMarshal policy interval) (PDF) |
| Princep 4L EPA 100-526; same active ingredients on 7 other branded products | simazine | 5 | Ms Weed Guide 2025, ms corn pre: 7 → 80–90% control (FieldMarshal policy interval) (PDF) |
| Broadleaf Blend EPA 5481-678; same active ingredients on 4 other branded products | clopyralid and flumetsulam | 2, 4 | Ks Weed Guide 2026, ks corn post: G → 80–90% 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: G → 80–90% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms corn pre: 9 → 90–100% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms corn post: 9 → 90–100% control (FieldMarshal policy interval) (PDF) |
| Distinct EPA 7969-150; same active ingredients on 2 other branded products | dicamba and diflufenzopyr | 4, 19 | Ks Weed Guide 2026, ks corn post: E → 90–100% control (FieldMarshal policy interval) (PDF); Ky Weed Guide 2025, ky corn postemergence: 8 → 80–90% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms corn post: 9 → 90–100% control (FieldMarshal policy interval) (PDF) |
| Linex 4L EPA 61842-21; same active ingredients on 2 other branded products | linuron | 5 | Ms Weed Guide 2025, ms corn post directed: 8 → 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: G → 80–90% control (FieldMarshal policy interval) (PDF) |
| Brozine EPA 34704-892; same active ingredients on 1 other branded product | atrazine and bromoxynil | 5, 6 | Ks Weed Guide 2026, ks corn post: G-E → 80–100% 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.