From labels and weed guides
Group 4 herbicides for wild buckwheat in field corn
There are 10 Group 4 active-ingredient groups rated good or excellent for wild buckwheat in field corn, with products labeled for field corn.
Group 4 mode of action (MOA) options
Group 4 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 field corn. 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, 10 active-ingredient groups are rated good or excellent for wild buckwheat in field corn.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Alligare Dicamba 4 EPA 81927-55; same active ingredients on 35 other branded products | dicamba | 4 | ND Weed Guide 2026: E (PDF) |
| Definite EPA 83529-105; same active ingredients on 7 other branded products | acetochlor, clopyralid, and flumetsulam | 2, 4, 15 | ND Weed Guide 2026: E (PDF) |
| COLT AS EPA 34704-1019; same active ingredients on 5 other branded products | clopyralid and fluroxypyr 1-methylheptyl ester | 4 | ND Weed Guide 2026: E (PDF); WinField Crop Protection 2026, corn post: E (PDF) |
| Orador EPA 91234-324; same active ingredients on 3 other branded products | acetochlor, clopyralid, and mesotrione | 4, 15, 27 | ND Weed Guide 2026: G-E (PDF) |
| Distinct EPA 7969-150; same active ingredients on 2 other branded products | dicamba and diflufenzopyr | 4, 19 | ND Weed Guide 2026: E (PDF); WinField Crop Protection 2026, corn post: E (PDF) |
| Daikon EPA 91234-217; same active ingredients on 1 other branded product | dicamba and halosulfuron-methyl | 2, 4 | WinField Crop Protection 2026, corn post: E (PDF) |
| Commando EPA 42750-92 | 2,4-d and clopyralid | 4 | ND Weed Guide 2026: G (PDF) |
| DiFlexx DUO EPA 264-1184 | dicamba and tembotrione | 4, 27 | ND Weed Guide 2026: E (PDF); WinField Crop Protection 2026, corn post: E (PDF) |
| Kochiavore EPA 1381-258 | 2,4-d, bromoxynil, and fluroxypyr 1-methylheptyl ester | 4, 6 | WinField Crop Protection 2026, corn post: E (PDF) |
| Starane NXT EPA 62719-557 | bromoxynil and fluroxypyr 1-methylheptyl ester | 4, 6 | 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.