الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
– Beans (Phaseolus vulgaris )as a fresh or dry food have a high nutritional value and their proteins contain different essential amino acids . the problem of beans ( Phaseolus vulgaris ) cultivated in most localites in egypt is the failure to from effective nodules even after inoculation with their specific strain of R. phaseoli.This may affect atmospheric nitrogen fixation and consequently the yield of such important legume.