From labels and weed guides
Best herbicides for pigweed in fallow
For pigweed in fallow, the weed guides list 5 active-ingredient groups rated good or excellent, after checking that the products are labeled for fallow.
Pigweed control in fallow
Every listed product is labeled for fallow. 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 pigweed in fallow.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Affinity BroadSpec EPA 279-9601; same active ingredients on 26 other branded products | thifensulfuron and tribenuron-methyl | 2 | WinField Crop Protection 2026, fallow: E (PDF) |
| Express EPA 279-9594; same active ingredients on 4 other branded products | tribenuron-methyl | 2 | WinField Crop Protection 2026, fallow: E (PDF) |
| Basis Blend EPA 352-854; same active ingredients on 2 other branded products | rimsulfuron and thifensulfuron | 2 | WinField Crop Protection 2026, fallow: E (PDF) |
| Agility SG EPA 352-751 | dicamba, metsulfuron-methyl, thifensulfuron, and tribenuron-methyl | 2, 4 | WinField Crop Protection 2026, fallow: E (PDF) |
| Sharpen EPA 7969-278 | saflufenacil | 14 | WinField Crop Protection 2026, fallow: 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.