From labels and weed guides
Best herbicides for downy brome in field corn
For downy brome in field corn, the weed guides list 8 active-ingredient groups rated good or excellent, after checking that the products are labeled for field corn.
Downy Brome control in field corn
Every listed product is labeled for field corn. Ratings are shown when each weed guide that rates this weed stays at good or excellent for the active-ingredient group. If a guide gives a range, the weaker end of the range has to be good or excellent.
Based on 1 weed guide, 8 active-ingredient groups are rated good or excellent for downy brome in field corn.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| AAtrex 4L EPA 100-497; same active ingredients on 31 other branded products | atrazine | 5 | ND Weed Guide 2026: G (PDF); ND Weed Guide 2026: G-E (PDF) |
| Enlist Duo EPA 62719-649; same active ingredients on 3 other branded products | 2,4-d and glyphosate | 4, 9 | ND Weed Guide 2026: G-E (PDF) |
| Fierce EPA 59639-193; same active ingredients on 1 other branded product | flumioxazin and pyroxasulfone | 14, 15 | ND Weed Guide 2026: G-E (PDF) |
| Acuron EPA 100-1466 | atrazine, bicyclopyrone, mesotrione, and metolachlor | 5, 15, 27 | ND Weed Guide 2026: G (PDF) |
| Corvus EPA 264-1066 | isoxaflutole and thiencarbazone-methyl | 2, 27 | ND Weed Guide 2026: G (PDF) |
| Halex GT EPA 100-1282 | glyphosate, mesotrione, and metolachlor | 9, 15, 27 | ND Weed Guide 2026: G (PDF) |
| Kyber Pro EPA 59639-236 | flumioxazin, metribuzin, and pyroxasulfone | 5, 14, 15 | ND Weed Guide 2026: G-E (PDF) |
| Trivolt EPA 264-1211 | flufenacet, isoxaflutole, and thiencarbazone-methyl | 2, 15, 27 | ND Weed Guide 2026: G (PDF) |
Rating legend: E=excellent, G=good, F=fair, P=poor, N=no control. 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.
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Sources
Data from current labels and weed guides. Last source update: 2026-07-14.