As of 2019, glyphosate resistant waterhemp has been confirmed in 13 counties in Ontario.

Christian Willemse, a master of science student at the University of Guelph, under the supervision of Dr. Peter Sikkema, will continue a survey on glyphosate resistant waterhemp this fall as part of his master’s project.

Farmers and agronomists are encouraged to contact Willemse if they have waterhemp in their fields, regardless of whether they suspect herbicide resistance or not. Willemse will ensure that seed is collected and tested as part of the project. He can be reached at [email protected]

Related: Waterhemp’s spread, control, and surveying

 

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