From labels and weed guides
Best herbicides for woolly cupgrass in field corn
For woolly cupgrass in field corn, the weed guides list 2 active-ingredient groups rated good or excellent, after checking that the products are labeled for field corn.
Woolly Cupgrass control in field corn
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, 2 active-ingredient groups are rated good or excellent for woolly cupgrass in field corn.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Balance Flexx EPA 264-1067; same active ingredients on 1 other branded product | isoxaflutole | 27 | Ia Weed Guide 2025, ia corn pre: G-E (PDF) |
| Halex GT EPA 100-1282 | glyphosate, mesotrione, and metolachlor | 9, 15, 27 | WinField Crop Protection 2026, corn post: 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.