الفهرس 
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Abstract
This work was carried out to study the effect of irrigation frequency, nitrogen and phosphorus fertilization , addition of zinc and molybdenum and in oculation with rhizobia on produc tivity of both soybean (Glycine max) and lentil (Lens esculenta ) crops under Egyptian conditions . Also, the experiments were extended to study the effect different levels of salinity on the lentilyield . In addition character istics of the used Rhizobium strains of Bradyrhizobium japonicum and Rhizobium leguminosarum were defined . The experiments were conducted at Sakha A gricultural Research station during the period of 1985-1987.