From labels and weed guides

Best herbicides for eastern black nightshade in sweet potato

For eastern black nightshade in sweet potato, the weed guides list 2 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for sweet potato.

Eastern Black Nightshade control in sweet potato

Every listed product is labeled for sweet potato. 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, 2 active-ingredient groups are rated at least 80% control for eastern black nightshade in sweet potato.

Example productActive ingredientsMOA groupRatings checked
Axill Solutions Flumi 51% WDG
EPA 95055-14-93809; same active ingredients on 24 other branded products
flumioxazin14ND Weed Guide 2026: E → 90–99% control (PDF)
Gramoxone SL 3.0
EPA 100-1652; same active ingredients on 2 other branded products
paraquat22ND Weed Guide 2026: G-E → 80–99% control (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.