Herbicide resistance in Western Canada has been confirmed to be an issue on multiple levels. Up to 14 of Western Canada’s top problematic weeds have been confirmed with resistance and some of them with cross-resistance to multiple herbicide groups.

Kochia has become one of the most concerning weed problems in Western Canada, not only being one of the toughest to kill, but now showing resistance and cross— resistance to up to 4 herbicide groups, including Group 2, 9, 4, and 14.