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Weed herbicide resistance is one of the most serious management  issues ratedfby growers, agronomists and researchers . In Eastern Canada at the top of that list is glyphosate-resistant fleabane (GRFB). First identified in southern Ontario in 2010, GRFB has spread like wildfire across Ontario and is now identified in other areas including Quebec. Fleabane seeds are small, airborne, and stick to clothing, equipment, animals. A single mature plant can produce up to 250,000 seeds/plant. Most fleabane biotypes are glyphosate-resistant, but other biotype herbicide resistance to group 2, 2 & 9, and 22 exist.Good control options exist in corn and wheat, but is problematic in soybeans.
Article-OGF: https://b.link/GRFB_oNTFARM
Ont Diagostic Day presentation: https://b.link/Sikkama_GRFB
Research report-  Dr Peter Sikkema, RCAT : https://b.link/Sikkema_GRFB