Supriya .. Here, a citation from Herridge, D.F., Peoples, M.B. & Boddey, R.M. Global inputs of biological nitrogen fixation in agricultural systems. Plant Soil 311, 1–18 (2008). https://doi.org/10.1007/s11104-008-9668-3:
"Annual inputs of fixed N are calculated to be 2.95 Tg for the pulses and 18.5 Tg for the oilseed legumes. Soybean (Glycine max) is the dominant crop legume, representing 50% of the global crop legume area and 68% of global production. We calculate soybean to fix 16.4 Tg N annually, representing 77% of the N fixed by the crop legumes."