EFFICACY OF FUNGICIDES IN CONTROLLING LEAF BLIGHT OF WHEAT CAUSED BY Bipolaris sorokiniana

Abstract

An experiment was carried out to determine the comparative efficacy of Vitavax-200 as seed treating chemical; Tilt-250 EC, Bavistin and Pencozeb as foliar spray in controlling leaf blight of wheat caused by Bipolaris sorokiniana under field conditions. The single effect of Vitavax-200, Tilt250 EC, Bavistin and Pencozeb were found less effective than that of combined effect of Vitavax-200 with Tih-2S0 EC. Vitavax-200 with Pencozeb and Vitavax-200 with Bavistin. The effect of seed treatment with Vitavax- 200 followed by subsequent three foliar sprays with Tilt-250 EC (Ts) has been found significantly more effective than the other single and combined effects in reducing leaf blight severity of wheat. Maximum grain yield 4.05 t/ha was found under the treatment Ts (Vitavax-200 with three sprays of Tilt-250 EC) which increased grain yield by 44.64% over untreated control. The treatment T7 resulted statistically similar effect to that of treatment Ts (Vitavax-200 with two sprays of Tilt-250 EC) in reducing leafblight severity and increasing grain yield of wheat over control.