الفهرس 
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Abstract
control of stored-product insect population is primarily dependent upon application of liquid and gaseous insecticides .However, their repeated use has led to widespread development of resistance ,undesirable effects on non-target organisms, and environmental and human health concerns. These problems have highlighted the need for the development of new types of selective insect-control alternatives .Plants may provide potential alternatives to currently used insect-control agents because they constitute a rich source of bioactive chemicals(Stoll,1988,Shmutterer,199,Latum Gerrits,1991,Downum et al.,1993,Copping,2001,Collins,2005 et al.).Since these are often active against a limited number of species including specific target insect, and are often biodegradable to non-toxic products, and are potentially suitable for use in integrated pest managemet,they could lead to the development of new classes of safer insect-control agents. Much effort therefore ,been focused on plant-derived materials potentially useful products as commercial insect -control agents. Little work has been done to manage stored-product insects by using aromatic plants despite their excellent pharmacological actions.This thesis describes a laboratory study to assess the potential of plant extracts of some Egyptian plants for use as insecticides against stored- product insects. Insecticidal activities of water and ethanol extracts were assessed against Sitophilus granarius ,Tribolium confusum, Acanthoscelides obtectus and Oryzaephilus surinamensis.