Causal organism:
It is caused by Erysiphe cichoracearum DC. Outbreak of this disease is associated with dry weather.
Symptoms
Ø It attacks leaves first producing faint,
Ø slightly discolourd specks from which grayish white powdery growth of mycelium and spores spread over leaf, stem and pod.
Ø The leaves turn yellow and die.
Ø The fruits do not either set or remain very small.
Ø It causes defoliation.
The disease develops late in season and reaches to maximum intensity at the time of pod formation. The early cultivars escape the disease.
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