From labels and weed guides
Best herbicides for pennsylvania smartweed in rice
For pennsylvania smartweed in rice, the weed guides list 8 active-ingredient groups rated good or excellent, after checking that the products are labeled for rice.
Pennsylvania Smartweed 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, 8 active-ingredient groups are rated good or excellent for pennsylvania smartweed in rice.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| 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: E (PDF) |
| Arroz 80 EPA 5481-649; same active ingredients on 5 other branded products | bispyribac | 2 | Ms Weed Guide 2025, ms rice post before flood: E (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: G (PDF) |
| Gambit EPA 81880-27-10163 | halosulfuron-methyl and prosulfuron | 2 | Ms Weed Guide 2025, ms rice pre: G (PDF); Ms Weed Guide 2025, ms rice post before flood: G (PDF) |
| League EPA 59639-166 | imazosulfuron | 2 | Ms Weed Guide 2025, ms rice post before flood: G (PDF) |
| Permit Plus EPA 81880-26-10163 | halosulfuron-methyl and thifensulfuron | 2 | Ms Weed Guide 2025, ms rice post before flood: G (PDF) |
| Sharpen EPA 7969-278 | saflufenacil | 14 | Ms Weed Guide 2025, ms rice pre: G (PDF); Ms Weed Guide 2025, ms rice post before flood: G (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.
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.