The Compatibility of Some (PGPR) to Some Economic Crops Varities: Nitrogen Fixation Bacteria acts as Biofertilizers on some Economics Crops

Current work was conducted to evaluate the capability of some plant growth promoting rhizobacteria (PGPR) Isolates from different Egyptian soils at different governmentes i.e El-fayoum, Giza, El-Minia and El-Nubaria, to biosynthesize phytohormones and other PGPR – compounds and the ability to fix nitrogen in defined culture media, and to discuss possible technological implication and their compatibility to some wheat and maize varieties.