In 2018, clubroot galls on canola roots were collected from 32 infected fields in North Dakota. Representative samples from these fields were selected and tested in a greenhouse by Dr. Strelkov’s group in Edmonton, AB, Canada to determine clubroot pathotypes that are prevalent in North Dakota on cruciferous hosts determined by researchers; Some, Williams, and Strelkov (Canadian Clubroot Differentials).
Results: The clubroot galls tested indicated that fields in North Dakota were infected with minor pathotypes, which can be controlled by first generation clubroot resistant varieties that are currently commercially available. Likewise, these canola clubroot resistant varieties have to be planted once in a three-year rotation.
Acknowledgements: Ron Beneda, CHS, Milton, ND.
