Powdery mildew disease on okra (Abelmoschus esculentusL.) incited by fungus, Erysiphe cichoracearum DC is a limiting factor in the successful cultivation in Marathwada region of Maharashtra State. Survey on farmers field indicated the average incidence and average severity in the range of 87.70 per cent and 52.26 PDI The disease on farmers field was characterized with the appearance of white patches on the upper surface of lower leaves which soon join together to farm large patches. Severely infected plants showed necrosis on leaves, petioles, stem and fruits.On the basis of effectiveness in...