Double crop soybeans start growing half way through the season, so their yield potential is low. Photo: John Greig

Weed resistance closes in on glufosinate

Expanded soybean acres and tighter application windows erode buffers that have protected Liberty herbicide for Prairie farmers

Expanded soybean acres and tighter application windows have eroded buffers that have so far protected Liberty herbicide on Prairie farms


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