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Leaf spot (Cercospora moricola)

Period of occurrence:

The disease generally occurs during rainy season (June-Dec.)

Identification of the disease:

  1. The causal fungus produces minor circular light brown spots on the leaves which gradually increase in size and turn dark brown.
  2. The tiny spots coalesce to form bigger ones.
  3. The dead tissues fall off resulting shot holes lining yellow circle around the shot hole.
  4. The highly affected leaves fall off prematurely.
  5. Conidia are hyaline, solitary, acicular, multi-septate base-truncate, tip-acute hilum thickened and darkened (Fig. 2).

     

      Infected leaf showing yellow           Conidia of Cercospora moricola
                                                         hallo margin around the spots   
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