Evaluation of Different Botanicals against Yellow Stem Borer (Scirpophaga incertulas, Walker) and Leaf FOLDER (Cnaphalocrocis medinalis, Guenee) of Rice

Author: I. Paramasiva*, Ch Sreelakshmi, U. Vineetha and P. Rajasekhar

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Abstract

Rice stem borer and leaf folder are important insect pests of rice that cause economic loss. Chemical control against these pests causing harmful effects, so it is necessary to find alternative methods. In this context a field experiment was conducted to evaluate the botanical insecticides along with chemical insecticides rynaxypyr and dinotefuran against the stem borer and leaf folder of rice. The experimental material comprised for five botanical (camphor oil, Cedarwood oil, eucalyptus oil, lemon grass oil and neemazal) along with recommended insecticides, dinotefuran and rynaxypyr. Chemical insecticide rynaxypyr 20 SC @ 0.3 ml/L was found effective to control both stem borer and leaf folder infestation. Among the botanicals tested, neemazal @ 5 ml/L was found superior in controlling the stem borer infestation where as lemon grass oil @ 2 ml/L was found effective against leaf folder incidence with highest per cent reduction over untreated check. Since these botanicals are eco-friendl

Keywords

Rice Yellow stem borer, Leaf folder, Scirpophaga incertulas, Cnaphalocrocis medinalis, Botanicals.

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