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.



A swathed cereal crop is combined in west-central Manitoba Aug. 30. Photo: Alexis Stockford

Herbicide resistance thriving in Manitoba wild oats

Farmers’ weed battle with wild oats isn’t getting any easier, with growing herbicide resistance increasing risk that spraying won’t beat it back

Farmers’ weed battle with wild oats isn’t getting any easier, with growing herbicide resistance increasing risk that spraying won’t beat it back.


A patch of stinkweed flourishes in a field in the RM of Cartier in Manitoba on May 21, 2025.

VIDEO: What’s that weed seedling?

Identifying weeds while they’re still small and easier to control can save the farmer from big weed problems later in the season

Identifying weeds while they’re still small and easier to control can save the farmer from big weed problems later in the season



A new generation of herbicide tolerant soybeans is coming soon, according to Bayer.

New Bayer genetics to open up soybean herbicide tolerance

Vyconic trait set offers tolerance to five herbicides and will be integrated with the company’s soybean varieties in coming years

Bayer’s Vyconic soybeans offer tolerance to five herbicides, a first for Canadian crop growers. This new advancement could help farmers combat resistant weeds and manage fields.

Left to right: Weed specialists Jeanette Gaultier of BASF, Kim Brown of Manitoba Agriculture and Tammy Jones of Corteva participate in a panel at this year’s Manitoba Agronomists Conference, moderated by plant science professor Rob Gulden.

Building a culture of weed control

Experts highlight importance of collaboration between government and private sector agronomists to contain problem weeds

Collaboration between government and private sector agronomists to contain problem weeds and herbicide resistance is key, Manitoba Agronomists Conference panel says.