Glyphosate or auxinic-resistant kochia and Russian thistle prairie surveys

Glyphosate or auxinic-resistant kochia and Russian thistle prairie surveys

Researchers: Julia Leeson
Start Date: 2019
Status: In Progress

Lead Researcher:  Julia Leeson, AAFC, Saskatoon
Start Date:  2019
Project Length: 5 Years (2019- 2023)
Project Status: APPROVED IN PROGRESS

Objectives: The objective of this project is to determine the evolution or spread of glyphosate-resistant (GR) or auxinic-resistant kochia in Manitoba in 2018, Saskatchewan 2019, and Alberta 2021 since the 2012/2013 baseline surveys. The results of this project will inform producers and other stakeholders in the agri-food sector of the current incidence of GR or auxinic-resistant kochia and emerging GR weeds so that mitigation measures can be deployed efficiently and effectively.

Total project cost:  $87,800
MWBGA funding approved:  
$7,500
Partner funding: 
$80,300
Funding Partners:
AWC, SWDC, MPSG, SC, SPG, and MGRF

Benefits to MB Producers: Currently, kochia is the only weed in western Canada to evolve resistance to glyphosate. Based on post harvest, random field surveys in Manitoba in 2013 (Alberta in 2012 and Saskatchewan in 2013), two fields (corn and soybean) in Manitoba had GR kochia (about 5% of fields in Alberta and Saskatchewan). By determining the rate and extent of evolution of spread of GR or auxinic-resistant kochia since the initial baseline surveys were conducted, we can better advise producers of the risk, potential agronomic and economic impact, and best management practices to mitigate or manage GR or auxinic-resistant kochia (and other species if found). Monitoring or surveillance enhances producer awareness; awareness of the current extent of the problem is required to facilitate producer adoption of mitigation or management measures and their rapid deployment for economically and agronomically sustainable annual crop production.