From labels and weed guides
Best herbicides for annual smartweed in barley
For annual smartweed in barley, the weed guides list 21 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for barley.
Annual Smartweed 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, 21 active-ingredient groups are rated at least 80% control for annual smartweed in barley, showing the top 12 below.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Alligare Dicamba 4 EPA 81927-55; same active ingredients on 35 other branded products | dicamba | 4 | ND Weed Guide 2026: E → 90–99% 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 → 81–90% 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: G → 80–90% control (PDF); WinField Crop Protection 2026, small grains: E → 91–100% control (PDF) |
| Bite EPA 83529-74; same active ingredients on 8 other branded products | clopyralid | 4 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Broclean EPA 34704-891; same active ingredients on 5 other branded products | bromoxynil | 6 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| COLT AS EPA 34704-1019; same active ingredients on 5 other branded products | clopyralid and fluroxypyr 1-methylheptyl ester | 4 | ND Weed Guide 2026: G → 80–90% control (PDF) |
| Harmony GT XP EPA 279-9577; same active ingredients on 3 other branded products | thifensulfuron | 2 | ND Weed Guide 2026: E → 90–99% 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: E → 91–100% control (PDF) |
| Commando EPA 42750-92; same active ingredients on 1 other branded product | 2,4-d and clopyralid | 4 | ND Weed Guide 2026: E → 90–99% control (PDF); WinField Crop Protection 2026, small grains: G → 81–90% control (PDF) |
| Wolverine EPA 264-1075; same active ingredients on 1 other branded product | bromoxynil, fenoxaprop-p-ethyl, and pyrasulfotole | 1, 6, 27 | ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Agility SG EPA 352-751 | dicamba, metsulfuron-methyl, thifensulfuron, and tribenuron-methyl | 2, 4 | WinField Crop Protection 2026, small grains: E → 91–100% 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.