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Water resources in Egypt are limited to meet the increasing demands for agricultural extensions. Application of wastewater to lands is one of the oldest and the cheapest methods for treatment and disposal of wastewater. The wastewater provides effective source of nutrients that crop root are able to assimilate. The use of treated wastewater for afforestation, offers reduction of environmental pollution as well as timber productivity is considered an important resource in the local economy. Irrigation of forest trees with wastewater raised for fuel and timber. Growing the green belts around...

The extensive applications of organophosphorous herbicides are nowadays integral part of modern agrotechnical methods due to their advantages for weeds control. Herbicides may negatively or positively interact with soil microorganisms and consequently reduce or increase their beneficial effects on soil fertility. The effect of herbicides on soil microorganisms varies with chemical composition and the susceptibility of different microorganisms. The observed increased biodegradation of pesticides after repeated application is due to the selection of pesticide degrading microorganisms....