AgGronomyTV Sept 15 to 30: Deciding when to spray to wipe out weeds At Crop Diagnostic School in Carman in July, Tammy Jones, weed specialist with Manitoba Agriculture, discussed the economic thresholds of weed control Sep. 18, 2019 at 1:37 pm 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)CommentsThis field is for validation purposes and should be left unchanged.