From labels and weed guides
Best herbicides for kochia in soybeans
For kochia in soybeans, the weed guides list 16 active-ingredient groups rated good or excellent, after checking that the products are labeled for soybeans.
Kochia 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, 16 active-ingredient groups are rated good or excellent for kochia in soybeans, showing the top 12 below.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| BLASTWAVE 240 EC EPA 103087-15; same active ingredients on 12 other branded products | oxyfluorfen | 14 | ND Weed Guide 2026: G-E (PDF) |
| FIRSTSHOT SG EPA 279-9609; same active ingredients on 11 other branded products | thifensulfuron and tribenuron-methyl | 2 | WinField Crop Protection 2026, soybean burndown: 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); WinField Crop Protection 2026, soybean pp pre: E (PDF) |
| Prefix EPA 100-1268; same active ingredients on 7 other branded products | fomesafen and metolachlor | 14, 15 | WinField Crop Protection 2026, soybean pp pre: G (PDF) |
| Aquesta MTZ EPA 91234-49; same active ingredients on 5 other branded products | metribuzin and sulfentrazone | 5, 14 | WinField Crop Protection 2026, soybean pp pre: G/E (PDF) |
| Basis Blend EPA 352-854; same active ingredients on 5 other branded products | rimsulfuron and thifensulfuron | 2 | ND Weed Guide 2026: Ea (PDF) |
| Grapple EPA 71368-121; same active ingredients on 5 other branded products | rimsulfuron | 2 | ND Weed Guide 2026: Ea (PDF); ND Weed Guide 2026: Ga (PDF) |
| Agent GT EPA 33270-30; same active ingredients on 3 other branded products | fomesafen and glyphosate | 9, 14 | ND Weed Guide 2026: G-E (PDF); ND Weed Guide 2026: G-Ea (PDF); WinField Crop Protection 2026, soybean post: E (PDF) |
| Canopy EX EPA 352-635; same active ingredients on 2 other branded products | chlorimuron and tribenuron-methyl | 2 | WinField Crop Protection 2026, soybean pp pre: G/E (PDF) |
| Flu-Rimuron EPA 85678-48; same active ingredients on 2 other branded products | chlorimuron and flumioxazin | 2, 14 | WinField Crop Protection 2026, soybean pp pre: G (PDF) |
| Linex 4L EPA 61842-21; same active ingredients on 2 other branded products | linuron | 5 | WinField Crop Protection 2026, soybean pp pre: E (PDF) |
| Dimetric Charged EPA 71368-125-1381; same active ingredients on 1 other branded product | flumioxazin and metribuzin | 5, 14 | WinField Crop Protection 2026, soybean pp pre: 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.