Pydiflumetofen: An SDHI seed‐applied fungicide, a potential tool for the canola‐blackleg management toolbox

Abstract

Canola (Brassica napus), as the world's second most important oilseed crop, is the most profitable farm crop for Canadian farmers, providing more than 207,000 Canadian jobs and $12 billion in wages across the country. Canada exports 90% of canola seeds, oil and meal produced annually to foreign markets (Canola Council of Canada, 2020).Blackleg disease caused by the actinomycete fungus Leptosphaeria maculans (anamorph: Phoma lingam) is one of the most destructive pathogens found in canola in North America, Australia, Europe and many other regions around the world .This pathogen can reduce yield by up to 80%, depending on the susceptibility of the cultivar grown (Marcroft et al., 2004). This fatal disease can be managed by an integrated approach using crop rotation, resistant cultivars, resistance (R)-gene rotation and fungicide application, while genetic resistance of the host is the mainstay