From labels and weed guides
Group 15 herbicides for common lambsquarters in potato
There are 3 Group 15 active-ingredient groups rated good or excellent for common lambsquarters in potato, with products labeled for potato.
Group 15 mode of action (MOA) options
Group 15 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 potato. 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 1 weed guide, 3 active-ingredient groups are rated good or excellent for common lambsquarters in potato.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Boundary 6.5EC EPA 100-1162; same active ingredients on 13 other branded products | metolachlor and metribuzin | 5, 15 | WinField Crop Protection 2026, potato: E (PDF) |
| Outlook EPA 7969-156; same active ingredients on 1 other branded product | dimethenamid-p | 15 | WinField Crop Protection 2026, potato: G (PDF) |
| Anthem Flex EPA 279-3464 | carfentrazone-ethyl and pyroxasulfone | 14, 15 | WinField Crop Protection 2026, potato: G/G (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.