MANAGEMENT OF POWDERY MILDEW OF CUCURBITS CAUSED BY Sphaerotheca fulignea WITH FUNGICIDES

摘要

An experiment was conducted during 2002 and 2003 summer seasons to study theeffectiveness of Sitara (hexaconazole 5 EC), Tebuconazole 25 EC, Eurofil NT (mancozeb35SC) and Share 40SC (elemental sulphur) against powdery mildew of cucurbits(Sphaerotheca fulignea) in comparison to Karathane (dinocap 48 EC) - a recommendedfungicide. All the test fungicides significantly reduced the severity of powdery mildewover check. Sitara and Tebuconazole were found highly effective and resulted in more than91% control of the disease with more than 144.5 to 155.4% increase in crop yield. Effectivenessof Share was comparable with Karathane in controlling the disease. Eurofil NT was foundcomparatively less effective as it showed 65.5 % control of disease. Three fortnightly foliarsprays of Sitara / Tebuconazole or four sprays of Share / Karathane at 10 days interval werefound effective in controlling the disease under Himachal Pradesh conditions.