The arid and semi arid regions of Rajasthan are characterized by low precipitation, high and hot summer winds, high thermal load and saline tracts. More than 60% of the hot and arid regions of India are in the state of Rajasthan. This region harbors several nodulating native as well as exotic legumes and associated diverse rhizobia. Beside their role in soil fertility and sand stabilization, these legumes are sources of food, fodder, medicine, shelter and firewood for the local inhabitants
