Evaluation of various fungicides against sheath blight under in vitro condition

Abstract

The present studies were undertaken to investigate the effect of various fungicides against sheath blight. Eight fungicides were tested against the rice sheath blight pathogen under lab conditions at various concentrations for analysing the mycelial growth and mycelial dry weight. The results revealed that, among the various fungicides among the eight fungicides, Hexaconazole (Contaf) @ (200 ppm) completely inhibited the mycelial growth and mycelial dry weight of R. solani. Propiconazole, Metaminostrobin, carbendazim, Azoxystrobin, copper oxychloride, difenconazole, Tebuconazole @ 400 ppm recorded 0.00mm, 0.00mm, 2.70mm, 5.35mm, 16.84mm and 22.15mm and 26.00mm radial growth of the test pathogen respectively.