Kochia grows in a low patch of a soybean field north of Ninette, Man., in late August 2025. Photo: Alexis Stockford

Kochia creeps farther north in Manitoba

Farmers are fighting kochia farther north than ever before in Manitoba, while the weed also keeps racking up resistance to herbicides

Farmers are fighting kochia farther north than ever before in Manitoba, while the resistance-prone weed also keeps eating up herbicide options.

An example of a predictive map overlay showing expected weed patches based on multi-year field history. Photo: Geco

Predictive weed mapping, coming to a farm field near you

Geco–Gowan deal taps AI tools, multi-year imagery, to forecast weed-patch-prone field zones so farms can preemptively adjust treatments

Geco–Gowan deal taps AI tools, imagery, to forecast weed-patch-prone field zones, so Prairie farms can preemptively target herbicides





burn-down spraying

The looming threat of HPPD herbicide resistance

Group 27 herbicides are still effective in Manitoba, so far, but weeds are beating them in other parts of North America, and there are plenty of other resistance worries already on the ground

Group 27 herbicides are still working in Manitoba, so far, but weeds are beating them in other parts of North America, plus we have other resistance worries.



Corn is harvested in southeastern Manitoba. Photo: Geralyn Wichers

Manitoba corn research looks for home-based weed control

Growers currently rely on U.S. or Ontario recommendations, but a U of M study is hunting for better advice with local conditions in mind

University of Manitoba researchers want corn growers to have Manitoba-based weed control advice, not U.S. or Ontario-based recommendations.