From labels and weed guides
Best herbicides for canada thistle in triticale
For canada thistle in triticale, the weed guides list 2 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for triticale.
Canada Thistle control in triticale
Every listed product is labeled for triticale. 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 2 weed guides, 2 active-ingredient groups are rated at least 80% control for canada thistle in triticale.
| Example product | Active ingredients | MOA group | Ratings checked |
|---|---|---|---|
| Boomer PRX EPA 62719-685-55467; same active ingredients on 1 other branded product | clopyralid, fluroxypyr 1-methylheptyl ester, and pyroxsulam | 2, 4 | Mi Weed Guide 2026 Small Grain, mi small grain post: G → 80–90% control (FieldMarshal policy interval) (PDF); ND Weed Guide 2026: G-E → 80–99% control (PDF) |
| Supremacy EPA 66330-406 | fluroxypyr 1-methylheptyl ester, thifensulfuron, and tribenuron-methyl | 2, 4 | ND Weed Guide 2026: G → 80–90% 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.
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: 2026-09-30.