This post will serve as a repository for all information associated with the management and control of waterhemp in Ontario.
This post will serve as a primary resource for the status of herbicide resistant weeds along with testing services and expertise provided to Ontario agriculture.
If you grow soybeans and have had all or either of Canada fleabane, common ragweed and giant ragweed growing in your fields, the use of pre-plant herbicide tank-mixes will be your best chance at achieving good control of these weeds. Management options for these three weeds are either limited or do not provide acceptable control once the soybean crop has…
Below is a summary of all weed samples sent into the University of Guelph by producers and agronomists that suspected resistance to a particular herbicide during the 2012 season. Also included are herbicide options with different modes of action that are effective on each species. The latest summary of glyphosate resistant Canada fleabane and Giant ragweed populations is also listed….