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Chilli Powdery mildew

Chilli Powdery Mildew

Causal organism: Leveillula taurica
Family: Erysiphaceae
Order:   Erysiphales
Class: Plectomycetes
Sub. Division:  Ascomycotina

Powdery mildew causing heavy yield loss ranging from 14 to 20 per cent, due to severe defoliation and reduction in photosynthesis, size and number of fruits per plant  This disease is very common from  November to February.

Powdery mildew


  1. White powdery coating appears mostly on the lower surface
  2. Sometimes the powdery coating can also be seen on the upper surface.
  3. Correspondingly on the upper surface yellow patches are seen
  4. Severe infection results in the drying and shedding of affected leaves.
  5. Powdery growth can also be seen on young fruits, and branches.
  6. Diseased fruits do not grow further and may drop down.

Powdery growth on lower surface of leaves 

Powdery gowth on upper surface of leaves

Chloratic spots on upper surface of leaves

Drying of leaves due to severe infection