الفهرس 
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Abstract
The main problem that faces storage process is the attack of stored product insect species which cause great losses both qualitative and quantitative. S. oryzae and C. maculatus are considered two of the most important stored product insects. Therefore the subjects of current study include two tools: Natural tool: different level of temperature and Chemical methods: plant products (extracts and powders), Nanoparticles of copper and Pyrethroid insecticide (Cypermethrin). Results showed significant differences between the actions of tested materials on both insects with the studied parameters. The all tested materials had deterrent influences on the all studied parameters (toxicity, progeny and weight loss) against the two experimental insects. Cypermethrin was the premier among the investigated materials concerning the all criteria under study following by copper-nanoparticles, plant powders and plant extracts. The different response of the two insects against the evaluated materials might be due to some of factors like type of plant, plant formulation, chemical composition of each plant, plant part used, experimental conditions, type of insect species, nutrition behavior of each insect, harmful insect phase and the insect surface area exposed to the tested material. According the means of emerged adults of the different immature stages at the different temperatures and times of exposure S. oryzae was more susceptible than C. maculatus.