kochia weed in a field

New herbicides help producers mix up modes of action to fight resistance

Farmers can fend off herbicide-resistant weeds and make money by changing up their weed control program

How can thinking about resistance help us economically in the short and long term?” This was a question posed by Brad Ewankiw, a project manager for FMC Canada, during a presentation on FMC’s new herbicides at North Star Genetics’ annual soybean grower information day in Morris March 27. Ewankiw pointed to pre-emergent residual herbicides as

weeds in a farmer's field

Kochia: ‘the cockroach of the plant world’

Weed can duplicate extra copies of a gene 
which is resistant to glyphosate

A Kansas State University weed scientist says he’s figured out why glyphosate-resistant kochia is like a “cockroach of the plant world.” Mithila Jugulam, assistant professor of agronomy, led a study that looked at how kochia evolved resistance to the herbicide. The researchers found that kochia has evolved to have multiple copies of a gene code


Kochia seedling

Manitoba’s first glyphosate-resistant weed confirmed

The good news is, the weed was found at only two sites out of 283 surveyed last fall

Manitoba has its first official glyphosate-resistant weed, and as expected, it is kochia. But out of 283 fields surveyed last fall, only two were found with glyphosate-resistant kochia. Both are in the Red River Valley. “I was surprised about where it was found,” Bruce Brolley, Manitoba Agriculture, Food and Rural Development’s (MAFRD) crops knowledge centre