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 with every rating at least 80% control, 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 has a lower interval bound of at least 80% control for the active-ingredient group. If a guide gives a range, its lower bound must be at least 80%.
Based on 1 weed guide, 8 active-ingredient groups are rated at least 80% control 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: 9 → 90–100% control (FieldMarshal policy interval) (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: 9 → 90–100% control (FieldMarshal policy interval) (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: 7 → 80–90% control (FieldMarshal policy interval) (PDF) |
| Gambit EPA 81880-27-10163 | halosulfuron-methyl and prosulfuron | 2 | Ms Weed Guide 2025, ms rice pre: 8 → 80–90% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms rice post before flood: 8 → 80–90% control (FieldMarshal policy interval) (PDF) |
| League EPA 59639-166 | imazosulfuron | 2 | Ms Weed Guide 2025, ms rice post before flood: 7 → 80–90% control (FieldMarshal policy interval) (PDF) |
| Permit Plus EPA 81880-26-10163 | halosulfuron-methyl and thifensulfuron | 2 | Ms Weed Guide 2025, ms rice post before flood: 8 → 80–90% control (FieldMarshal policy interval) (PDF) |
| Sharpen EPA 7969-278 | saflufenacil | 14 | Ms Weed Guide 2025, ms rice pre: 8 → 80–90% control (FieldMarshal policy interval) (PDF); Ms Weed Guide 2025, ms rice post before flood: 8 → 80–90% control (FieldMarshal policy interval) (PDF) |
| Storm EPA 70506-59 | acifluorfen and bentazon | 6, 14 | Ms Weed Guide 2025, ms rice post before flood: 8 → 80–90% control (FieldMarshal policy interval) (PDF) |
Rating bands: E 90-100%, G 80-89%, F 70-79%, P under 70%, N none. Policy intervals are marked in the source ratings. 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. Read the rating method.
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Sources
Data from current labels and weed guides. Last source update: 2026-09-30.