Efficacy of new fungicide combination against sheath blight of rice

Abstract

Among the fungal diseases sheath blight caused by Rhizoctonia solani Kuhn is one of the most widely distributed disease of rice. In this regard for the management of this disease; seven treatment combinations viz. Tricyclazole 20%+ Tebuconazole 16% SC @ 2.0, 2.25 ml/l, Tricyclazole 75 WP @ 0.60 g/l, Tebuconazole 25% @ 1.5 ml/l, Hexaconazole 5% EC @ 2.0 ml/l, Carbendazim 50%WP @1.0 g/l and check were evaluated against sheath blight of rice on the susceptible variety Pusa basmati-1 under field condition. Among the new fungicides combination Tricyclazole 20%+ Tebuconazole 16% SC @ 2.25 ml/l was found best in checking the disease severity (29.5%, 22.3%) and increase the grain yield of rice (53.8%, 58.9%) over check.