Studies on efficacy of sinpv with plant extracts in the management of Spodoptera litura [fabricius] on cabbage

Abstract

Evaluation of SlNPV at 250 LE per ha in combination with different plant extracts under field condition against Spodoptera litura [fab] on cabbage. The results indicated that highest per cent [81.66%] larval reduction was recorded in the SINPV +NSKE-5% followed by SINPV+neem oil-0.1% [73.33%]. The other plant extracts like mustard oil-0.2%, chilli garlic extract-2.5% Calatropis leaf extract-2% and Pongamia leaf extract-2% along with SlNPV were recorded 62.78, 60.26, 55.38 and 53.75 per cent larval reduction over control was observed in sole treatment of SlNPV with 45.60%. The same trend was observed during second spray. The addition of NSKE-5% or neem oil-0.1% with SlNPV spray solution have additive effect and also avoid deterioration of NPV in the sun light and helps in bringing more reduction in the larval population of S.litura immidietly after each spray.