From labels and weed guides
Best herbicides for mayweed in barley
For mayweed in barley, the weed guides list 8 active-ingredient groups rated good or excellent, after checking that the products are labeled for barley.
Mayweed control in barley
Every listed product is labeled for barley. 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, 8 active-ingredient groups are rated good or excellent for mayweed in barley.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Affinity BroadSpec EPA 279-9601; same active ingredients on 26 other branded products | thifensulfuron and tribenuron-methyl | 2 | WinField Crop Protection 2026, small grains: E (PDF) |
| Bison EPA 71368-28-1381; same active ingredients on 11 other branded products | bromoxynil and mcpa | 4, 6 | WinField Crop Protection 2026, small grains: G (PDF) |
| Commando EPA 42750-92; same active ingredients on 1 other branded product | 2,4-d and clopyralid | 4 | WinField Crop Protection 2026, small grains: E (PDF) |
| GLEAN XP EPA 279-9600; same active ingredients on 1 other branded product | chlorsulfuron | 2 | WinField Crop Protection 2026, small grains: G (PDF) |
| Peak EPA 100-763; same active ingredients on 1 other branded product | prosulfuron | 2 | Ms Weed Guide 2025, ms small grain: G (PDF) |
| Agility SG EPA 352-751 | dicamba, metsulfuron-methyl, thifensulfuron, and tribenuron-methyl | 2, 4 | WinField Crop Protection 2026, small grains: G/E (PDF) |
| Curtail M EPA 62719-86 | clopyralid and mcpa | 4 | WinField Crop Protection 2026, small grains: E (PDF) |
| Huskie EPA 264-1023 | bromoxynil and pyrasulfotole | 6, 27 | Ms Weed Guide 2025, ms small grain: 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.