From labels and weed guides
Best herbicides for lambsquarters in cowpea
For lambsquarters in cowpea, the weed guides list 5 active-ingredient groups rated good or excellent, after checking that the products are labeled for cowpea.
Lambsquarters control in cowpea
Every listed product is labeled for cowpea. 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, 5 active-ingredient groups are rated good or excellent for lambsquarters in cowpea.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Axill Solutions Flumi 51% WDG EPA 95055-14-93809; same active ingredients on 18 other branded products | flumioxazin | 14 | ND Weed Guide 2026: G-E (PDF) |
| Antares EPA 82534-5-5905; same active ingredients on 16 other branded products | sulfentrazone | 14 | ND Weed Guide 2026: G-E (PDF) |
| Authority Elite EPA 279-3442; same active ingredients on 9 other branded products | metolachlor and sulfentrazone | 14, 15 | ND Weed Guide 2026: E (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 8 other branded products | paraquat | 22 | ND Weed Guide 2026: E (PDF) |
| PETRA IMI EPA 89168-49-91395; same active ingredients on 2 other branded products | imazethapyr and sulfentrazone | 2, 14 | 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.
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Sources
Data from current labels and weed guides. Last source update: 2026-07-14.