Shaun Sharpe is on a mission to keep palmer amaranth and waterhemp weeds out of Saskatchewan.
Tag Archives herbicide resistance
New Saskatchewan study aims to prevent invasive weeds
Two weeds in particular, palmer amaranth and waterhemp, are cause for concern because of their herbicide resistance
Herbicide-resistant kochia puts pressure on no-till systems
Kochia populations in Saskatchewan and North Dakota are now resistant to group 14 herbicides, leaving fewer options for Prairie farmers
Based on preliminary data from a recent Prairie-wide kochia survey, AAFC’s Charles Geddes suspects Group 14-resistant kochia is now present in multiple fields in Saskatchewan and expects it could soon be confirmed in other regions as well.
Herbicide resistant weeds cost farmers money
The problem of herbicide resistance is growing, and producers are encouraged to do everything they can to tackle it
Herbicide resistance costs Saskatchewan growers at least $340 million a year, according to the most recent federal data.
Tackling herbicide resistance with smarter spraying
Spray application specialist Tom Wolf shares insights on how spraying issues can affect resistant weeds
Tom Wolfe of Sprayers101.com recently spoke at the Manitoba Agronomists’ Conference
Crop Production Show 2025: New herbicide tackles resistance in wild oats
Product features a dual mode of action with Group 1 and Group 2 molecules that removes guesswork from weed control
WINNIPEG — Wild oats and kochia are the most problematic weeds in Western Canada. They’re everywhere, and often come with resistance to herbicides. “The story behind wild oat being one of the biggest grassy weed issues and kochia being one of the biggest broadleaf weed issues, is generally consistent across the board for the Prairie […] Read more
Fall spraying may beat back herbicide resistance
Early October was the ideal time to start fall applications because of favourable weather, but later spraying also works
Glacier FarmMedia – The fall weed control season offers a chance to be proactive in managing herbicide resistance. That was one message from Wes Lewis, Manitoba sales representative with Gowan Canada, during Manitoba Agriculture’s Crop Talk webinar in early October. Having spent more than 16 years in the agriculture industry, Lewis knows his herbicides. “Our […] Read more
Glyphosate: from star to supporting cast member
WINNIPEG — In the 1970s and early 1980s, Jack Nicholson was a major star in Hollywood. He was the leading man in iconic movies such as The Shining, Chinatown and One Flew Over the Cuckoo’s Nest. Nicholson was still acting in the 1990s and 2000s, but he had more success as a supporting actor — […] Read more
Weed seeds may ride the rails
WINNIPEG — About eight years ago, Aaron Hager warned farmers in Alberta about palmer amaranth. Hager, a University of Illinois weed scientist, spoke to growers at a conference in the Peace River region. He explained that palmer, a pigweed that grows to two metres or higher, could be viable in Alberta and other parts of […] Read more
Weed management sees new future
Intercropping, predictive weed control could redraw the battle lines in the fight against herbicide resistant weeds
Herbicide resistance in weeds is rising and there are no new chemistries on the horizon, so farmers will need fresh approaches to integrated weed management strategies. “I think the best management practice that someone could do for weed resistance is the one you’re not currently doing on your farm,” said Rory Cranston, technical strategy lead […] Read more
Herbicide resistance flirts with crisis mode
Integrated weed management includes many approaches that take the pressure off of commonly used herbicides
They’re big numbers underscoring a big problem. In Saskatchewan, over 15 million acres of weed patches are resistant to Groups 1 and 2 herbicides. Of 31 known herbicide sites of action, 21 have confirmed resistance to a weed species. And, with 56 confirmed cases, Canada is third in the world for herbicide-resistant weeds. These are […] Read more
