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...

The aphid species are major insect pests of many plants, mainly crucifers, in several parts of the world. It is not admissible to use chemical pesticides to control such pests especially on the edible crops which are consumed as a human food. The routine application of these pesticides to control aphids has two adverse impacts, firstly they are mostly non selective and kill aphid natural enemies, which causes further disturbance of the ecosystem. Secondly, as in other species, resistant strains of aphids can be expected to develop soon.The present study aims to throw some light on the...