The first appearance is a white powder, mainly on the upper leaf surface. The white powder appears on the hand by touching the white spots Circular spots appear on the lower surface of the leaves. In severe cases, they spread and coalesce and cover both the surfaces of the leaves and also spread to petioles, stems, etc. Severely affected leaves become brown and shrivelled and may drop off. The fruits of the affected plants are not fully developed and remain small.
Control: If infestation is observed, take spray of M-45 (Mancozeb 75% WP) 400 gm/acre or Jatayu Chlorothalonil 75% WP 400 gm/acre mixed in 200 litres of water. Powdery mildew can be controlled by spraying twice at an interval of 10-15 days.
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