From labels and weed guides
Best herbicides for lambsquarters in soybeans
For lambsquarters in soybeans, the weed guides list 21 active-ingredient groups rated good or excellent, after checking that the products are labeled for soybeans.
Lambsquarters control in soybeans
Every listed product is labeled for soybeans. 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, 21 active-ingredient groups are rated good or excellent for lambsquarters in soybeans, showing the top 12 below.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| 2,4-D Amine 4 EPA 1381-103; same active ingredients on 76 other branded products | 2,4-d | 4 | ND Weed Guide 2026: E (PDF) |
| Alligare Dicamba 4 EPA 81927-55; same active ingredients on 28 other branded products | dicamba | 4 | ND Weed Guide 2026: E (PDF); ND Weed Guide 2026: G (PDF) |
| Antares EPA 82534-5-5905; same active ingredients on 19 other branded products | sulfentrazone | 14 | ND Weed Guide 2026: G-E (PDF); Sd Soybean Weed Guide 2026, sd soybean: G (PDF) |
| Bonedry EPA 82557-1; same active ingredients on 13 other branded products | paraquat | 22 | ND Weed Guide 2026: E (PDF) |
| Boundary 6.5EC EPA 100-1162; same active ingredients on 13 other branded products | metolachlor and metribuzin | 5, 15 | ND Weed Guide 2026: G (PDF); Sd Soybean Weed Guide 2026, sd soybean: G (PDF) |
| BLASTWAVE 240 EC EPA 103087-15; same active ingredients on 12 other branded products | oxyfluorfen | 14 | ND Weed Guide 2026: G (PDF) |
| 2,4-DB 175 EPA 19713-675-1381; same active ingredients on 10 other branded products | 2,4-db | 4 | 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); ND Weed Guide 2026: G-E (PDF) |
| Antares Prime EPA 82534-10-5905; same active ingredients on 8 other branded products | cloransulam-methyl and sulfentrazone | 2, 14 | ND Weed Guide 2026: E (PDF); ND Weed Guide 2026: G-E (PDF); Sd Soybean Weed Guide 2026, sd soybean: G (PDF) |
| Prefix EPA 100-1268; same active ingredients on 7 other branded products | fomesafen and metolachlor | 14, 15 | Sd Soybean Weed Guide 2026, sd soybean: G (PDF) |
| Authority Assist EPA 279-3330; same active ingredients on 5 other branded products | imazethapyr and sulfentrazone | 2, 14 | ND Weed Guide 2026: E (PDF); ND Weed Guide 2026: G-E (PDF); Sd Soybean Weed Guide 2026, sd soybean: G (PDF) |
| Accolade EPA 62719-277-279; same active ingredients on 4 other branded products | flumetsulam | 2 | Sd Soybean Weed Guide 2026, sd soybean: 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.
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Sources
Data from current labels and weed guides. Last source update: 2026-07-14.