From labels and weed guides
Best herbicides for palmer amaranth in rice
For palmer amaranth in rice, the weed guides list 6 active-ingredient groups rated good or excellent, after checking that the products are labeled for rice.
Palmer Amaranth control in rice
Every listed product is labeled for rice. 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, 6 active-ingredient groups are rated good or excellent for palmer amaranth in rice.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Acumen EPA 241-337-55467; same active ingredients on 18 other branded products | pendimethalin | 3 | Ms Weed Guide 2025, ms rice pre: G (PDF) |
| Diverge EC EPA 66222-294; same active ingredients on 17 other branded products | propanil | 5 | Ms Weed Guide 2025, ms rice post before flood: G (PDF); Ms Weed Guide 2025, ms rice post after flood: G (PDF) |
| AIM EC EPA 279-3241; same active ingredients on 9 other branded products | carfentrazone-ethyl | 14 | Ms Weed Guide 2025, ms rice post before flood: G (PDF) |
| Loyant EPA 62719-698; same active ingredients on 1 other branded product | florpyrauxifen-benzyl | 4 | Ms Weed Guide 2025, ms rice post before flood: E (PDF) |
| Sharpen EPA 7969-278 | saflufenacil | 14 | Ms Weed Guide 2025, ms rice pre: E (PDF); Ms Weed Guide 2025, ms rice post before flood: E (PDF) |
| Storm EPA 70506-59 | acifluorfen and bentazon | 6, 14 | Ms Weed Guide 2025, ms rice post before flood: 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.