A large kochia plant is thriving amidst a lentil crop.

Kochia migrates north

A website where observers can post sightings shows the weed is moving into the northern Prairies

An unofficial project tracking the distribution of kochia on the Prairies has found that it’s present and possibly established in more northerly regions.


ADAMA unveiled a new herbicide called Cazado at the 2025 Crop Production Show in Saskatoon. It's a dual mode of action product that contains Group 1 and Group 2 molecules. | AAFC photo

Crop Production Show 2025: New herbicide tackles resistance in wild oats

Product features a dual mode of action with Group 1 and Group 2 molecules that removes guesswork from weed control

WINNIPEG — Wild oats and kochia are the most problematic weeds in Western Canada. They’re everywhere, and often come with resistance to herbicides. “The story behind wild oat being one of the biggest grassy weed issues and kochia being one of the biggest broadleaf weed issues, is generally consistent across the board for the Prairie […] Read more


Weed specialists Jeanette Gaultier, left, 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. | Screen capture

Building a culture of weed control

Experts highlight importance of collaboration to contain problem weeds

Glacier FarmMedia – Distributing the message about problem weeds tends to fall on the shoulders of private and retail agronomists, says Manitoba Agriculture weed specialist Kim Brown. “I reach a fair number of farmers in this province, but we probably have 8,500 registered farmers, and we can’t reach them all. So, we rely heavily on […] Read more

Kochia typically appears in patches within a field rather than across the entire field, and farmers are advised to treat it only where it is found. | File photo

Researcher experiments with burying kochia

Agriculture Canada scientist looked at a number of ways to kill the weed by covering it and found chaff worked best

WINNIPEG —- Every weed has a weakness. For kochia, the pesky tumbleweed that’s become difficult to control in parts of Western Canada, that weakness is burial. Research has shown the seeds of kochia are less likely to germinate when they’re buried in the soil. For the last few years, Agriculture Canada scientists in Saskatoon have […] Read more


Quick adapting and designed to spread, kochia seems biologically primed to shrug off the punches farmers throw at it. |  Manitoba Agriculture photo

The fall weed control checklist

Glacier FarmMedia – Attention to fall weed control is needed as harvest nears its end. Speaking during a Manitoba Agriculture webinar Sept. 25, provincial weed specialist Kim Brown singled out weeds that thrive in salinity, which concerned many producers this spring. Effective fall weed management is essential to maximize crop yields and maintain soil health. […] Read more

Bayer says adoption of tank mix practices using multiple effective modes of action is key to protecting yield potential, as well as managing weed resistance concerns.  |  File photo

Weeds have adapted but so have Canadian farmers: Bayer

The company says it is sharing information with producers on the value of using strategies to manage weed resistance

WINNIPEG — Bayer began its acquisition of Monsanto in 2016, and the takeover was finalized in 2018. With the transaction, Bayer became the rights holder of Roundup, which Monsanto commercialized in 1974. The patent on Roundup expired in 2000, allowing other companies to produce generic versions of glyphosate, the ingredient in Roundup that kills weeds. […] Read more

Some weed scientists believe glyphosate will soon play a supporting role on Canadian farms. | File photo

Glyphosate: from star to supporting cast member

WINNIPEG — In the 1970s and early 1980s, Jack Nicholson was a major star in Hollywood. He was the leading man in iconic movies such as The Shining, Chinatown and One Flew Over the Cuckoo’s Nest. Nicholson was still acting in the 1990s and 2000s, but he had more success as a supporting actor — […] Read more


The agriculture industry says Saskatchewan is behind other jurisdictions in terms of education about water management, and there is a need for “one big table” where everyone involved in water can discuss issues.  |  Karen Briere photo

Network promotes better farm drainage communication

Farmer-led initiative says producers, public need better information about how to handle too much or too little water

REGINA — A new collaboration in Saskatchewan is meant to improve communication about agricultural water. The Saskatchewan Drainage Extension Network (SK DEN) is a partnership led by farmers and farm organizations who want water better managed. Related story: Landowners struggle with unapproved drainage “When it comes to drainage management and irrigation, I think we have […] Read more

The most recent Saskatchewan survey found that in fields where kochia was present, the weed was Group 2-resistant 100 per cent of the time.  |  Charles Geddes photo

Herbicide resistance flirts with crisis mode

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 more