Toxicity and mode of action of neem (Azadirachta indica A. Juss) formulation on rice brown plant hopper (Nilaparvata lugens Stal)

Wijayaratnam, S.2021-06-142021-06-141991https://dl-doa.nsf.gov.lk/handle/1/317774AgricultureAgricultural EntomologyToxicity and mode of action of neem (Azadirachta indica A. Juss) formulation on rice brown plant hopper (Nilaparvata lugens Stal)ThesisMScUniversity of Peradeniya