عبد الكريم بن بطي سعد الجهني2022-05-192022-05-191200https://drepo.sdl.edu.sa/handle/20.500.14154/10177This study designed to investigate the effect of some plant extracts, natural oils and certain insecticides on the mortality of larvae of the rhinoceros beetle Oryctes rhinoceros under laboratory conditions. The results of the study revealed that:  Preliminary experiments showed that: extracts of Calotropis procera, Azadirachta indica, Citrullus colocynthis, Alkarath, Cinnamum zeylanicum, Ricinus Communis, Anethum graveolens, Eruca Sativa(oil), and Prunus dulcis (oil) have no lethal effear-SAThesis