Making Survival Difficult for Glyphosate-Resistant Kochia

May 5, 2016

Glyphosate-resistant kochia has started showing up in more of Western Canada, and as with other cases of resistance, it’s becoming evident you can’t rely on a single tool for too long. Minimizing resistant weed populations requires an integrated or diverse approach.

The crop itself must help make survival difficult for potentially resistant weed seedlings, explains Rob Gulden of the University of Manitoba in this Canola School episode.

Kochia’s gene amplification method for becoming resistant to glyphosate is interesting, he notes, as the offspring from a resistant plant can range from completely susceptible to highly resistant.

A competitive crop that closes its canopy over the injured kochia seedlings will significantly reduce the odds of the resistant offspring surviving.

“On the other hand, if we have a crop with wide row spacing, those seedlings that weren’t killed by the initial dose of the herbicide, if we don’t go in and do anything about that, they will eventually reproduce, produce some seed and contribute to the problem,” he explains.

Gulden discusses what integrated weed management looks like in canola — row spacing, seeding populations, variety selection — and some of the other benefits (ie. bigger yield) from growing a dense canola stand in this video filmed at CanoLab in Brandon.


Canola School videos are produced by Real Agriculture.

You can find all of the episodes on Real Agriculture's Canola School page

Tags: ,

Upcoming Events

Grower Engagement Meeting - Online

The Grower Engagement Meetings offer growers an opportunity to provide direct feedback to the regionally elected directors and staff from Alberta Canola.
Dec 13
Online, Webinar

FCC - Creating a business plan that fits your farm transition vision

Join FCC from July 2022 to March 2023 for a series of 9 virtual monthly events focused on different aspects of the farm transition process hosted by FCC Business Advisors and transition experts.
Dec 13
Online, Webinar

Grower Engagement Meeting - Grande Prairie

The Grower Engagement Meetings offer growers an opportunity to provide direct feedback to the regionally elected directors and staff from Alberta Canola.
Dec 15
Grande Prairie, Alberta

Join our mailing list to receive important news and event updates!

Subscribe to our newsletters