From labels and weed guides
Group 2 herbicides for sunflower in barley
There are 7 Group 2 active-ingredient groups rated good or excellent for sunflower in barley, with products labeled for barley.
Group 2 mode of action (MOA) options
Group 2 is a herbicide mode of action (MOA) group. Treat it as one resistance-management check, not as the whole program.
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, 7 active-ingredient groups are rated good or excellent for sunflower 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: G/E (PDF) |
| Ally XP EPA 279-9575; same active ingredients on 10 other branded products | metsulfuron-methyl | 2 | WinField Crop Protection 2026, small grains: G/E (PDF) |
| Harmony GT XP EPA 279-9577; same active ingredients on 4 other branded products | thifensulfuron | 2 | ND Weed Guide 2026: G-E (PDF) |
| Agility SG EPA 352-751 | dicamba, metsulfuron-methyl, thifensulfuron, and tribenuron-methyl | 2, 4 | WinField Crop Protection 2026, small grains: E (PDF) |
| Orion EPA 100-1307 | florasulam and mcpa | 2, 4 | ND Weed Guide 2026: E (PDF) |
| Starane Flex EPA 62719-604 | florasulam and fluroxypyr 1-methylheptyl ester | 2, 4 | ND Weed Guide 2026: E (PDF) |
| Supremacy EPA 66330-406 | fluroxypyr 1-methylheptyl ester, thifensulfuron, and tribenuron-methyl | 2, 4 | ND Weed Guide 2026: 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.
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: 2026-07-14.