As canola becomes more common in the rotation and the intensity of production increases so does growers reliance on fungicides to combat blackleg infection. In 2015, researchers surveyed commercial paddocks for the presence of fungicide tolerance in blackleg populations. Steve Marcroft discusses the survey, its findings and the implications for management of blackleg.
For further information about the fungicide tolerance survey you can read the 2016 GRDC Update Paper Blackleg – stem/branch cankers and fungicide tolerance. The Blackleg Management Guide is the key resource for blackleg management.