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 moreTag Archives kochia
Outlook focuses on problem Prairie weeds
Glacier FarmMedia – The past few seasons have been a challenging time for farmers on the Canadian Prairies. Extreme heat, lack of precipitation and steep increases in production costs have caused some sleepless nights for many producers. As if those weren’t enough to contend with, another potential threat to crops will soon rear its ugly […] Read more
Kochia control among additions to guide
Several new herbicides have been added to Manitoba Agriculture’s 2024 Guide to Field Crop Protection. “We haven’t had a new herbicide group in over 40 years,” said Manitoba Agriculture weed specialist Kim Brown. “However, we do have some new products that are within the existing groups.” Two of the 11 new products are meant to […] Read more
Kochia in pulse crops a growing concern
Concerns about the spread of kochia continue to grow for Saskatchewan pulse growers. Michael Brown, agronomy manager for Saskatchewan Pulse Growers, and Martin Carr, agronomy manager for WinField United, have seen the pesky tumbleweed spread throughout Saskatchewan, Alberta and the United States. The weed is resistant to some herbicides, among them groups 4, 9 and […] Read more
Herbicide resistant weeds creep north into Canada
Weeds know no borders, of course, so when weed trouble or a resistance issue surfaces on the northern U.S. Plains, there’s a decent chance of it turning up somewhere on Canadian cropland sooner or later. “Folks in Manitoba and Saskatchewan will often look south, and we also often look north for the problems our neighbours […] Read more
Novel auxin wages war on weeds
The good news for cereal growers is that Corteva has introduced a new active ingredient to fight broadleaf weeds. The bad news is it won’t be available until 2028. The new product is called Bexoveld, which Corteva says provides good control of broadleaf weeds, including key resistant species in cereal crops. At low rates Bexoveld […] Read more
Group 14-resistant kochia found in central Sask.
Producers began using Group 14 herbicides once weeds started to appear in fields that were resistant to glyphosate
Charles Geddes, a research scientist in weed ecology at Agriculture Canada’s research centre in Lethbridge, said growers dealing with kochia should keep a lookout for this type of resistance.
