الفهرس 
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Abstract
)- this work has been done to investigatethe effect of some pesticides namely Temik (insecticide) , Orthocide and Vitavax / oaptan (fungicides )and Treflan (herbicide) on soil ,rhizosphere and rhizsophlane microorganisms.
Four expriments wer carried out to through light on the effect of those pesticides . In all experiments the moisture content of the soil was kept to the level of 60% of the water holding capacity.