From labels and weed guides
Best herbicides for downy brome in seed corn
For downy brome in seed corn, the weed guides list 5 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for seed corn.
Downy Brome control in seed corn
Every listed product is labeled for seed 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 1 weed guide, 5 active-ingredient groups are rated at least 80% control for downy brome in seed corn.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Acuron EPA 100-1466 | atrazine, bicyclopyrone, mesotrione, and metolachlor | 5, 15, 27 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Atrazine 4L EPA 34704-69 | atrazine | 5 | ND Weed Guide 2026: G → 80–90% control (PDF); ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Corvus EPA 264-1066 | isoxaflutole and thiencarbazone-methyl | 2, 27 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Enlist Duo EPA 62719-649 | 2,4-d and glyphosate | 4, 9 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Trivolt EPA 264-1211 | flufenacet, isoxaflutole, and thiencarbazone-methyl | 2, 15, 27 | ND Weed Guide 2026: G → 80–90% 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.