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Pre-planting strategies to minimise blackleg risk

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Pre-planting strategies to minimise blackleg risk.. Dr Steve Marcroft says fungicide tolerant blackleg isolates can cause stem canker and potentially yield loss... If crop monitoring in the previous year showed signs of blackleg and yield loss, Dr Marcroft says growers should look at their canola varieties' blackleg rating and consider how close they sow their canola to the previous year's stubble...