The Basics of GR Kochia
The map shows confirmed glyphosate resistant (GR) kochia findings by Rural Municipality from sampling conducted since 2014. In Manitoba, DNA from leaf materials of suspected GR kochia is assayed to determine the extent of resistance to glyphosate. This approach allows for a more rapid identification of suspected resistance in plants that did not respond to glyphosate application because it doesn't require seed production of the suspected resistant plants. Rapid identification of resistant plants is key to containing and slowing the spread of GR kochia biotypes into new fields.
For more information on weed management, contact the Crop Knowledge Centre at (204)-745-5663.
Kochia in Soybean Field, Credit: MB Ag.
DNA is obtained from green, actively growing plant material.