Studies On The Symbiotic Nitrogen Fixation By Root-Nodule Bacteria Of Lentil Plants ( Lens Esculenta )

The present work was carried out in field experiments to study the effect of inoculation with rhizobia and the application of different rates of nitrogen and phosphorus fertilizers on nodulation , nitrogen fixation and yield of two lentil cultivars . Different inocultion methods, as well as the competitive ability of inoculant strains against native soil rhizobia in newly cultivated areas at Zagazig , Delta and North Sinai desert soils , were investigated