Assessment of Okra Powdery Mildew (Erysiphe Cichoracearum DC) by Using Bio-agents and Chemical Fungicides
Satyandra Malav *
Department of Plant Pathology, Institute of Agriculture Science, Bundelkhand University Jhansi, (U.P), India.
J K Babele
Department of Plant Pathology, Institute of Agriculture Science, Bundelkhand University Jhansi, (U.P), India.
Chandra Mohan Meena
Department of Plant Pathology, Institute of Agriculture Science, Bundelkhand University Jhansi, (U.P), India.
Mohit Malav
Department of Plant Pathology, Institute of Agriculture Science, Bundelkhand University Jhansi, (U.P), India.
Chandra Prakash Sharma
Department of Plant Pathology, Swami Keshwanand Rajasthan Agriculture University, Bikaner (Rajasthan), India.
*Author to whom correspondence should be addressed.
Abstract
The present study aimed to assess okra powdery mildew (Erysiphe Cichoracearum DC) by using bio-agents and chemical fungicides. Okra (Abelmoschus esculentus (L.) Moench occupies a prominent place in the horticultural wealth and economy of the country. Powdery mildew disease on okra (Abelmoschus esculentus (L.) Moench incited by fungus, Erysiphe cichoracearum is a limiting factor in the successful cultivation in Bundelkhand region of Uttar Pradesh. Studies were carried out to find out disease management strategies against okra powdery mildew using bioagents and chemical fungicides. Disease incidence declined after first, second and third sprays. The fungicide Hexaconazole (Contaf 5% EC) @ 0.1%, showed significantly lowest disease incidence (19.53 %) with maximum (68.40 %) disease control. On the basis of effectiveness in controlling the powdery mildew disease of okra the most effective fungicides recorded in the order of merit were Carbendazim (Bavistin 50WP) @0.1%, Propiconazole (Tilt 25EC) @0.1%, Trichoderma viride (3 %), Sulphur (Sulfex 80% WP) @ 0.3%, Pseudomonas flouresens (4 %) and Trichoderma harizum (4 %).
Keywords: Powdery mildew, Erysiphe cichoracearum DC, okra