Light Leaf Spot of Brassicas
Silvery spots that become pale and diffuse with time and develop concentric rings of white to pale pink dots on a darker background.
Dark brown patches often with a lighter centre occur on petioles and Cauliflower heads.
Cauliflowers are very susceptible.
Biology:Favoured by cool wet conditions.
Survives on crop residues.
Spread by wind and rain splash.
Life Cycle:Origin and History:
Management and Control:
Destroy crop residues.
Allow 3 years between Brassica crops.
Related and Similar Species:References:
(Donald et al., 2002)
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