الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
bollworms insects in cotton pectinophora gossypiella and Erias insulana have an economic impact on cotton production in Egypt . chemical control tactics have been and will continue to be a predominant method of cotton protection. However , insect pest management approaches will continue to playan important role in decreasing losses due to bollworm as well as decreasing the number and amount of pesticides applied to the crop . thus these investigations were carried out to evaluate
Certain approaches in reducing cotton bollworm infestation and increasing cotto yield and reduce conventional nsecticide application.