TY - BOOK AU - Rao,P.R.M. TI - Toxicity,persistence and effectiveness of certain organic insecticides against the brown planthopper,nilaparvata lugens stal infesting rice KW - Brown plant hopper KW - rice organic insect ideas KW - Nilaparvata lugens KW - Genotoxicity KW - Apoptosis KW - Mutagenicity KW - Degradation KW - Discoloration ER -