الفهرس 
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Abstract
SVt&IARY AND CONCLUSIONS.
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A pot experiment was conducted to study the effect of ifferent saline irrigation waters as well as N—fertilization n soir physical and chemical properties of clay, euLcareous nd loamy soils and the growth of barley plant (Qua 121).
10 kg of each soil were placed in plastic pots ana ,ach pot received calcium auperphosphate ut a rate of 15.3 cg P205 I feddan. Thtreufter, ID-seeds of barley were sowe’ in each .pot . Alter fiji I emergency, nitrogen fertilizer was added at three rates, i.e., 40, 60 and 80 kg! fed. us annjo fliun) suiphate. Each N level was divided into three eqtw) portions which added alter 30, 45 uud 60 days Irvin sow$flb. The diifeet treatments were replicated 4 t tiCs factorial destgn.
Soil moisture was maintained daily at field capacity by weight using tap water up to fiJi emergency. TherciPttr, irrigation with different Sal me waters was pruetteed. The loss in weight due to water cunsuniptive use was estimlated
The different sal Inc solutions were prepared by usi Cad2, MgCI 2 and NaCI to ne judo three salt eo’we, t rt, t I i.e.. 15(H), 2750 and 4000 ppm. SAiL sojutLons were prepared by uáing the same salts and contained two values, i.e., 7 and 12 and each value included two Ca: Mg ratios, namely