Evaluation of fungicides against bipolaris leaf blight of wheat (triticum aestivum l.)

Abstract

Four commercial fungicides were evaluated for their efficacy to control bipolaris leaf blight of wheat under natural cpiphytotic condition during 1991-92 and 1992-93. Among them Tilt 250 EC (0.05%) was the most effective and profitable one which controlled the disease significantly, producing the highest grain yield with maximum gross margin. The disease severity was also reduced by Dithanc M-45 (0.2%) and Pencozeb (0.15%) and gave profitable yield. While application of Rovral (0.2%) was found to be uneconomic offering the lowest gross margin.