If Manitoba farmers weren’t concerned enough about the arrival of clubroot in two canola fields this summer, perhaps the latest confirmation of clubroot galls found in a North Dakota canola field will serve as a wake up call. Of course, this also serves as a giant red flag for American canola growers as well.
The official press release from the Northern Canola Growers Association states that symptoms were found in one field, however, sources are reporting that three other sites are awaiting confirmation.
Farmers are reminded that high pH soil does NOT provide protection from this disease and resting spores can persist in the soil for as long as 20 years. Avoidance requires careful sanitation of equipment and vehicles that have traveled from one field to the next, but especially from moving from an infested area to a non-infested area (weekend shopping trips to Fargo should end with a car wash, OK?).
Clubroot is a devastating disease of canola and other cruciferous crops. The spores of the disease travel with soil — on shoes, tires, equipment and anything else that mud will stick to.