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Research Project

Biology and management of glyphosate-resistant kochia

Project lead: 
Dr. Robert Blackshaw, Research Scientist, Weed Science, Agriculture and Agri-Food Canada – Lethbridge Research Centre

Start Date: April 2013

End Date: March 2016

Alberta Barley’s contribution: $15,000

Partners: 

  • Alberta Barley
  • Agriculture and Agri-Food Canada
  • Alberta Canola Producers Commission
  • Alberta Crop Industry Development Fund
  • Alberta Wheat Commission
  • Western Grains Research Foundation
  • Dow AgroSciences Canada
  • BASF Canada
  • Valent Canada
  • NuFarm Agriculture

Total funding from other partners: $132,000

Summary:
Kochia populations from more than 50 sites in Alberta and Saskatchewan have been confirmed to be glyphosate-resistant. This research will provide new information on the most efficacious and cost-effective alternative herbicides to control kochia in pre-seed, chemfallow, in-crop and post-harvest application. Knowledge gained from these glyphosate-resistant kochia studies could aid in preventing or delaying the onset of glyphosate resistance in other weed species.

Recent updates:
Kochia emerging in mid-July in Edmonton and mid-August in Lethbridge were capable of producing viable seed before a killing fall frost; thus growers must be diligent in controlling fall populations of kochia. New herbicides were identified for kochia control and data was supplied for their registration in Canada.

Benefits for farmers:
Farmers will be informed on best management practices to control glyphosate-resistant kochia, while simultaneously reducing the risk of developing kochia resistance to other herbicide groups. Data will be used to support registration of new herbicides to manage kochia in several crops, including barley.

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