From labels and weed guides
Best herbicides for longspine sandbur in alfalfa
For longspine sandbur in alfalfa, the weed guides list 5 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for alfalfa.
Longspine Sandbur control in alfalfa
Every listed product is labeled for alfalfa. 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, 5 active-ingredient groups are rated at least 80% control for longspine sandbur in alfalfa.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| ABUNDIT Edge EPA 352-922; same active ingredients on 81 other branded products | glyphosate | 9 | Ks Weed Guide 2026, ks alfalfa post: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Arrow 2EC EPA 66222-60; same active ingredients on 36 other branded products | clethodim | 1 | Ks Weed Guide 2026, ks alfalfa post: E → 90–100% control (FieldMarshal policy interval) (PDF) |
| Acumen EPA 241-337-55467; same active ingredients on 17 other branded products | pendimethalin | 3 | Ks Weed Guide 2026, ks alfalfa post to alfalfa pre to weeds: G-E → 80–100% control (FieldMarshal policy interval) (PDF) |
| Aceto Trifluralin 4EC EPA 2749-561; same active ingredients on 13 other branded products | trifluralin | 3 | Ks Weed Guide 2026, ks alfalfa post to alfalfa pre to weeds: G-E → 80–100% control (FieldMarshal policy interval) (PDF) |
| PAVILION MTZ EPA 89167-88-89391; same active ingredients on 1 other branded product | metribuzin and pendimethalin | 3, 5 | Ks Weed Guide 2026, ks alfalfa dormant: G → 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.