From labels and weed guides
Best herbicides for knotweed in sugar beet
For knotweed in sugar beet, the weed guides list 2 active-ingredient groups rated good or excellent, after checking that the products are labeled for sugar beet.
Knotweed control in sugar beet
Every listed product is labeled for sugar beet. 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, 2 active-ingredient groups are rated good or excellent for knotweed in sugar beet.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| 78623 58% Technical Solution EPA 524-532; same active ingredients on 81 other branded products | glyphosate | 9 | WinField Crop Protection 2026, sugarbeet: E (PDF) |
| Bite EPA 83529-74; same active ingredients on 8 other branded products | clopyralid | 4 | WinField Crop Protection 2026, sugarbeet: 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.