Mung bean (Vigna radiata L. wilezek) is an important food legume which belongs to the family, Fabaceae (Leguminaceae) and sub family Papilionaceae is extensively grown in humid to arid and semi-arid regions. The ability of Rhizobium bacteria to fix nitrogen from the air (N2) in symbiosis with legumes, huge natural source of nitrogen from the air can be taken up from this symbiotic association. This ability leads to decrease or absence of nitrogen mineral fertilizer application in the field. Therefore, there is need to explore the potential of rhizobia as legume inoculants under agro climatic...