In vitro Evaluation of Botanicals, Bio-agents and Fungicides against Rhizoctonia solani Causing Web Blight Disease of Mungbean

Abstract

Mungbean [Vigna radiata (L.) Wilczek] is the important source of proteins, minerals, and vitamins of the predominantly vegetarian Indian diet. It belongs to the family Leguminaceae. Web blight caused by Rhizoctonia solani (Kuhn) is one of the most important fungal diseases which come every year with different intensity and causes huge losses in mungbean yield. The present investigations were carried out in the laboratory, Department of Plant Pathology Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya to test the efficacy of different treatments viz., Neem, Garlic, Tulsi, onion, Ginger, T. asperellum, T. harzianum, Propiconazole and Hexaconazole against Rhizoctonia solani Kühn  under in vitro condition. Botanicals and Fungicides were tested through Poisoned food technique and Bio-agents were tested through dual culture technique. Pathogen was isolated from diseased mungbean plant and further tested against different treatments. Radial growth and percent inhibition were recorded. Minimum radial growth and maximum percent inhibition were recorded in Propiconazole 1.45 mm, followed by Hexaconazole (3.65 mm), Garlic (10.18 mm), Ginger (11.43 mm), Neem (12.90 mm), Onion (15.42 mm), Tulsi (17.63 mm), T. asperellum (18.58 mm),  T. harzianum (23.14 mm)  as compared to Control (45.17 mm) at 24 hours of incubation. Similar trends were found at 36 and 48 hours intervals.