Powdery Mildew on Mango

 
        Hey, Welcome Back to Another blog !!! 

        We will continue the discussion on the Common disease that has an effect on the Mango. We will start by a fungal disease mostly known as Powdery Mildew. It is harmful to leaves, flower and fruit. 

Powdery mildew on Mango

Powdery mildew on Mango



Causal Organism - Oidium mangiferae

        Powdery mildew of mango is an Ascomycete pathogen Belonging to the Erysiphales family. Oidium mangiferae appears in spring, from December through March.

Disease symptoms of Powdery Mildew on Mango-

  • The characteristic symptom of the disease is the white superficial powdery fungal growth on leaves stalks of panicles, flowers and young fruits.
  • The affected flowers and fruits drop pre-maturely reducing the crop load considerably or might even prevent the fruit set.
  • The fungus parasitizes young tissues of all parts of the inflorescence, leaves and fruits.
  • Young leaves are attacked on both the sides but it is more conspicuous on the grower surface. Often these patches coalesce and occupy larger areas turning into purplish-brown in colour

Mango powdery mildew flowers

Mango powdery mildew flowers


Survival and spread of Powdery Mildew on Mango

  • The powdery mildew fungus overwinters in dormant buds. When conditions are favourable for the growth of the fungus in spring, spores are produced, released, and cause new infections. Secondary spread of the disease can occur if spores are produced in these new infections

Favourable conditions of Powdery Mildew on Mango

  • Rains or mists accompanied by cooler nights during flowering are congenial for the disease spread.

This gives us a lot to think about and to continue with the series will be taking a look at another disease in the next blog.

Mango Malformation

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