Bioefficacy studies of new fungicidal formulations against Cercospora leaf spot and powdery mildew of chilli (Capsicum annuum L.) cv. Punjab Guchhedar

Abstract

The present experiment was conducted at the Vegetable Research Farm, Department of Horticulture, Institute of Agricultural Sciences, BHU, Varanasi during the Rabi season of 2016-17 to evaluate the efficacy of fungicides against Cercospora leaf spot and powdery mildew diseases of chilli cv. Punjab Guchhedar. A variant with no application of fungicides was used as a control. All fungicidal treatments reduced the disease severity as compared to the untreated control with a corresponding increase in yield. Application of Tebuconazole 430 SC (500 ml/ha) significantly reduced the diseases and ultimately recorded the highest yield (139.00 q/ha) followed by Tebuconazole 430 SC (440 ml/ha) with yield 137.39 q/ha. The overall results revealed that Tebuconazole 430 SC at both the concentrations (500 and 440 ml/ha) effectively reduced the disease severity and increased the yield as compared to untreated control.