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 with every rating at least 80% control, 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 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, 5 active-ingredient groups are rated at least 80% control 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 → 80–90% control (PDF); ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 13 other branded products | paraquat | 22 | WinField Crop Protection 2026, fallow: G → 81–90% control (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 → 80–99% control (PDF) |
| Fierce EPA 59639-193; same active ingredients on 1 other branded product | flumioxazin and pyroxasulfone | 14, 15 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Kyber Pro EPA 59639-236 | flumioxazin, metribuzin, and pyroxasulfone | 5, 14, 15 | ND Weed Guide 2026: G-E → 80–99% 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.
Build the full program
Check crop, timing, state, resistance, and rotation in one plan before you make a recommendation.
Sources
Data from current labels and weed guides. Last source update: 2026-09-30.