Abstract
The desert ecosystem has characteristically low biological activity and a low diversity of flora and fauna. In this harsh evironment living organisms maintain a fragile homeostatic existence and in consequence, desert ecosystems are endowed with an inherently delicate ecological balance. Scientists have been preoccupied with making the desert bloom, catalyzed by the role of modern technology and changes are currently induced in desert ecosystems in order to transform them into productive agroecosystems. The management of these by irrigation throughout the year has created favourable environments for pest species: the continuity of oases with permanently mixed crops creates refuges for the propagation of pests. Together with other forces such as weather conditions, plant diseases, salinization and soil erosion, insect pest species serve to change agroecosystems back to their unmanaged states.