Foreword. Preface. 1. An appraisal of biofertilizers in India; N.S. SubbaRao. 2. Biofertilizers for sustainable crop production; S. Kannaiyan. 3. Biofertilizers for sustaining cereal crops production; S.P. Wani,K.K. Lee. 4.Azospirillum biofertilizer for rainfed crops; K.V.B.R.Tilak, G. Singh. 5. Biochemistry of nitrogen fixation and assimilation; S. Sadasivam, S. Krishnaveni. 6. Host gene expression in nodulation and nitrogen fixation; S. Sadasivam, S. Krishnaveni. 7. Physiology, biochemistry and molecular genetics of legume symbiosis; F.J. Bergersen. 8. Nitrogen fixation in Parasponia; S. Sujatha Lilly,S. Kannaiyan. 9. Production of Rhizobium biofertilizer; N. Boonkerd,P. Singleton. 10. Biofertilizers for grain legumes; G.P.Brahmaprakash, S.V. Hedge. 11. Role of plant flavonoids as signal molecules to Rhizobium; S. Sundaravarathan, S. Kannaiyan. 12. Nitrogen fixation by tree legumes; D.L.N. Rao. 13. Stem nodulating bacteria in legumes; D.E. Fleischman. 14.