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Blackleg disease kicks in early in southern canola crops

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Author : Sharon Watt Oilseeds disease authority Dr Steve Marcroft says severe early blackleg disease infection in 2016 could be attributed to the combination of three factors - wet weather, breakdown of cultivar resistance and the onset of fungicide resistance... A combination of factors has led to severe early infection of blackleg disease in this year's canola crops in southern Australia (South Australia, Victoria and southern New South Wales)... "Normally with blackleg we tell farmers to monitor their crops at end of season to see how much stem canker they have - it's quite unusual for the disease to be striking young crops so severely at this time of the year," said Dr Marcroft, whose research is supported by the Grains Research and Development Corporation (GRDC)...