الملخص

The present study deals with the effects of 27 aqueous plant extracts at the concentrations 10, 7.5, 5 and 2.5% of 27 on rust-red fluor beetle , Tribolium castaneumHerbs and khapra beetle Trogoderma granarium Everts . The examined extracts plants represents numbers plants species belonging to twenty families . In genral mortality percentages was proportionally increased with the extract concentration . The extracts concentration mortality 50 % of treated larvae ( Lc50) were calculated . Appled extracts were significantly more effective on Khapra larvae weight in relation to rustry _ red flour beetle larvae .