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Inter cropping techniques between soybean and maize is one of agricultural practices to improve the quantity of crop production will reduce the environmental problems . In addition decreased cultivated area of rice and increased cultivated area of maize.Maize and soybean was infested by several pests and diseases which cause damage in quality and quantity in final yield, the frequent and excessive use of pesticides which affected the ecosystem, so that the present work focus to study some intercropping systems of soybean and maize, carry out studies on maize and soybean, survey and population density studies on dominant pests and diseases, survey and population density studies on associated natural enemies, using some alternative pesticides against target pests comparing to recommended pesticides, use Trichogramma parasitoid to control the corn borer and similar pests, biochemical studies for treated insects to investigate changes in physiological parameters, forecasting pest populations, study oil percentage on Soybean seeds and determination of aflatoxin and The production of the loaf bread with high quality and rich in nutrients.