Rice (Oryza sativa L.) being a significant food crop feeding millions of people globally. Among many malignancies of rice, the disease known as "Sheath blight of rice" is caused by Rhizoctonia solani. which evolved as the threat to rice production and its yield losses ranges from 5.2-50 % in distinct environmental conditions. The preliminary infection on leaf sheath gave the name as “sheath blight”. Many fungicides with diverse modes of action were available in the market. Ten isolates of R. solani were collected from Nadia & Bardhhaman districts of West Bengal. The current study was undertaken to determine the best and most economical fungicides to obliterate this disease in in-vitro condition. The assessment of efficiency for four fungicides against R. solani viz., Mancozeb 52.6% + Hexaconazole 2.4%, Hexaconazole 5% EC and Hexaconazole 4% + Zineb 68 %, Mancozeb 75% WP at 100ppm,250 ppm,500 ppm,1000 ppm concentrations respectively. This study revealed that Mancozeb 52.6% + Hexaconazole 2.4%, Hexaconazole 5% EC and Hexaconazole 4% + Zineb 68 % was effective against R. solani besides Mancozeb was least under in vitro conditions.

Download this article as