Comparative effect of bio pesticides and neem commercial products on rice yellow stem borer, Scirpophaga incertulas (Walker)

Abstract

Management of Rice yellow stem borer Scirpophaga incertulas Walker using Bio-pesticides and neem commercial products in field conditions. The management of Rice yellow Stem borer Scirpophaga incertulas (Walker) was done using 8 different treatments and benefit cost ratios of all the treatments were calculated. Total two sprays were applied to protect the crop from Scirpophaga incertula susing randomized block design with three replications. The observations of Scirpophaga incertulas 24 hours before (Pre-treatment) and 3rd, 7th and 14th day after spraying (Post-treatment) were recorded for computing the per cent of pest reduction. The data were subjected to statistical analysis after appropriate transformation for interpretation. The treatment with recommended insecticide Spionosad 45%SC was of the most effective treatment followed with Imidacloprid 17.8%SL and Neem oil. The next best treatments were found to be Azadirachtin and Beauveria bassiana. Bacillus thuringiensis and lantana leaf extract were found to be least effective against Scirpophaga incertulas (Walker).