From labels and weed guides
Best herbicides for russian thistle in barley
For russian thistle in barley, the weed guides list 22 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for barley.
Russian Thistle control in barley
Every listed product is labeled for barley. 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, 22 active-ingredient groups are rated at least 80% control for russian thistle in barley, 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 76 other branded products | 2,4-d | 4 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Affinity BroadSpec EPA 279-9601; same active ingredients on 25 other branded products | thifensulfuron and tribenuron-methyl | 2 | WinField Crop Protection 2026, small grains: G/E → 81–100% control (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 12 other branded products | paraquat | 22 | ND Weed Guide 2026: E → 90–99% control (PDF) |
| Bison EPA 71368-28-1381; same active ingredients on 11 other branded products | bromoxynil and mcpa | 4, 6 | ND Weed Guide 2026: E → 90–99% control (PDF); WinField Crop Protection 2026, small grains: G/E → 81–100% control (PDF) |
| Ally XP EPA 279-9575; same active ingredients on 10 other branded products | metsulfuron-methyl | 2 | WinField Crop Protection 2026, small grains: G → 81–90% control (PDF) |
| Broclean EPA 34704-891; same active ingredients on 5 other branded products | bromoxynil | 6 | ND Weed Guide 2026: E → 90–99% control (PDF) |
| Express EPA 279-9594; same active ingredients on 4 other branded products | tribenuron-methyl | 2 | ND Weed Guide 2026: Ea → 90–99% control (PDF) |
| Harmony GT XP EPA 279-9577; same active ingredients on 3 other branded products | thifensulfuron | 2 | ND Weed Guide 2026: G-Ea → 80–99% control (PDF) |
| Carnivore EPA 1381-249; same active ingredients on 2 other branded products | bromoxynil, fluroxypyr 1-methylheptyl ester, and mcpa | 4, 6 | WinField Crop Protection 2026, small grains: G/E → 81–100% control (PDF) |
| Imitator + 2,4-D EPA 19713-635; same active ingredients on 2 other branded products | 2,4-d and glyphosate | 4, 9 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Commando EPA 42750-92; same active ingredients on 1 other branded product | 2,4-d and clopyralid | 4 | ND Weed Guide 2026: G → 80–90% control (PDF); WinField Crop Protection 2026, small grains: G → 81–90% control (PDF) |
| GLEAN XP EPA 279-9600; same active ingredients on 1 other branded product | chlorsulfuron | 2 | WinField Crop Protection 2026, small grains: G → 81–90% 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.