Induction of Systemic Resistance (ISR) in Ground Nut Against Collar Rot (Aspergillus niger) by Using Pyraclostrobin 20% Water Dispersible Grangules

Abstract

An investigation was performed In vitro condition to check induction of systemic resistance in ground nut with Pyraclostrobin 20% WDG (at different concentrations), Vitavax (Carboxin+Thiram 75%WS), Mancozeb 3 g/kg (75% WP), Carbendazim 50% WP, Trichoderma viride, Pseudomonas fluorescens, and Untreated Control treatments. Groundnut seeds sown in pot soil mixed with the inoculum of A.niger at 5% level alone served as control. The treatments were given as per the schedule and foliar spray was given at 20% DAS. The experiment was conducted with three replications in a completely randomized design. All observations viz., the collar rot disease incidence (PDI- at 30 DAS), plant height (cm), plant biomass and pod yield was assessed and recorded at harvest following standard procedures. The results showed that all the treatments significantly reduced the collar rot disease incidence compared to the control. Among the treatments, seed treatment plus foliar spray of Pyraclostrobin 20% WDG at 0.15 % (T3) recorded significantly the least collar rot incidence of 14.12 per cent, maximum germination per cent (93.28%) and maximum yield (132.23 g/pot) than other treatments. The dosage level with Pyraclostrobin 20% WDG as seed treatment @ 1.0 g/kg of seed plus foliar spray at the conc. of 0.1% recorded statistically on par results with T3 the best treatment