Light leaf spot (LLS) of Brassica species is caused by the fungus Pyrenopeziza brassicae.In oilseed rape (Brassica napus), leaves become infected soon after sowing, but remain symptomless until lesions appear on older leaves. Developing pods are often infected, leading to premature ripening of seed and pod shatter. LLS is polycyclic and survives the summer on crop debris, volunteer oilseed rape, and vegetable brassicas. Disease management includes varieties with decreased levels of susceptibility, disease monitoring, and timely fungicide applications.
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