AgGronomyTV May 16 – 31 Dr. Ian Heap, who leads the International Survey of Herbicide-Resistant Weeds, ranks Canada Dr. Ian Heap talks about where Canada sits globally and why we have such a herbicide-resistance problem. May. 15, 2016 at 11:35 am CDT | 1 min read Subscribe to newsletter Want to be the first to receive news and updates? Sign up for our free newsletter!Privacy I consent to receiving emails from Glacier FarmMedia, its affiliates and divisions and third parties, containing agriculture news, updates and promotions. I can unsubscribe at any time Your Email(Required) Your Postal Code(Required)NameThis field is for validation purposes and should be left unchanged.