From labels and weed guides
Best herbicides for downy brome in fallow
For downy brome in fallow, the weed guides list 5 active-ingredient groups rated good or excellent, after checking that the products are labeled for fallow.
Downy Brome control in fallow
Every listed product is labeled for fallow. 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 2 weed guides, 5 active-ingredient groups are rated good or excellent for downy brome in fallow.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| AAtrex 4L EPA 100-497; same active ingredients on 32 other branded products | atrazine | 5 | ND Weed Guide 2026: G (PDF); ND Weed Guide 2026: G-E (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 13 other branded products | paraquat | 22 | WinField Crop Protection 2026, fallow: G (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) |
| Kyber Pro EPA 59639-236 | flumioxazin, metribuzin, and pyroxasulfone | 5, 14, 15 | ND Weed Guide 2026: G-E (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.