University of Guelph

Resistant Weeds

Weeds

Department of Plant Agriculture

Home » Resistance

Resistance

Resistance Herbicides by Chemical Group Control Options - Group II Control of Glyphosate Resistant Fleabane How much are herbicide resistant weeds costing you?

Ontario Weeds Committee

Herbicide Resistant Weed Populations Confirmed in Ontario (as of Dec. 2009)

Download PDF [33 kb]

Updated 2009-11-12