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Powdery Mildew

Image1: Oidium mangiferae

The disease of mango is caused by Oidium mangiferae  Berthet. The disease affects inflorescence, leaves and young fruits. The white superficial powdery growth of the fungus comprising a large number of conidia borne on conidiophores.

The disease can be managed by pruning of diseased leaves and malformed panicles and three sprays of fungicides at different stages starting with Wettable Sulphur (0.2%) at the panicle size of 7.50 -10.00 cm followed by Dinocap (0.1%) after 15-20 days of first spray and Tridemorph (0.1%) after15-20days of second spray. Wettable Sulphur (0.2%) can be used in all the three sprays and number of sprays may be reduced as per appearance time of disease.