Evaluation of Biorational Component and Chemicals for the Management of Lemon Butterfly Larvae on Citrus

Abstract

The investigation was conducted with imposed of treatments; Beauveriabassiana(1x108 CFU/ ml), Metarhiziumanisopliae(1x108 CFU/ ml), NSE (5.0%), Neem oil (2.0%), Spinosad 45 SC (0.03%), Imidacloprid 17.8 SL (0.005%), Acetamiprid 20 SP (0.04%), Abamectin 1.8 EC (0.003%) and Control (water spray) on Nagpur Mandarin against nursery pests. Such treatments were arranged in statistical design RBD with three replications, under green shade net nursery. In overall, cumulative effect of four applications of all the treatments, Abamectin 1.8 EC (0.003%) recording lowest (6.10 per cent) leaves infestation of leaf miner and found at par with Spinosad 45 SC (7.18 per cent) leaves infestation. The next best effective treatments, Acetamiprid 20 SP (9.34 per cent) of leaves infestation and Imidacloprid 17.8 SL (10.31 per cent) leaves infestation were at par with each other and found significantly superior to the Neem oil 2%, NSE 5 %, Beauveriabassiana1x108 CFU/ml and Metarhiziumanisopliae 1x108 CFU/ml respectively and these treatment groups were at par with each other. Maximum per cent infestation of leaf minor was noticed in control is (25.14 per cent). Key Words: Lemon Butterfly Larvae; Insecticide and Biorational Components