'The book is highly recommended for advanced students of agriculture as well as for agroculturalists, agrochemists, plant breeders and also also who are interested in various aspects of conservation and improving the natural resources with special reference to problems that are close to sustainable agriculture.' Acta Physiologiae Plantarum, 18:3 (1996)

• 1. Biological nitrogen fixation: An efficient source of nitrogen for sustainable agricultural production?.- 2. Sustainable agriculture in the semi-arid tropics through biological nitrogen fixation in grain legumes.- 3. Enhancing crop legume N2 fixation through selection and breeding.- 4. Enhancing legume N2 fixation through plant and soil management.- 5. Role of legumes in providing N for sustainable tropical pasture systems.- 6. Management of biological N2 fixation in alley cropping systems: Estimation and contribution to N balance.- 7. Manipulation of rhizobia microflora for improving legume productivity and soil fertility: A critical assessment.- 8. Green manure technology: Potential, usage, and limitations. A case study for lowland rice.- 9. Biological nitrogen fixation associated with sugar cane and rice: Contributions and prospects for improvement.- 10. Biological N2 fixation by heterotrophic and phototrophic bacteria in association with straw.- 11. Potential and pitfalls of trying to extend symbiotic interactions of nitrogen-fixing organisms to presently non-nodulated plants, such as rice.- 12. New techniques for studying competition by Rhizobia and for assessing nitrogen fixation in the field.- 13. Future benefits from biological nitrogen fixation: An ecological approach to agriculture.- 14. Research evaluation and impact analysis of biological nitrogen fixation.- Author index.

'The book is highly recommended for advanced students of agriculture as well as for agroculturalists, agrochemists, plant breeders and also also who are interested in various aspects of conservation and improving the natural resources with special reference to problems that are close to sustainable agriculture.' Acta Physiologiae Plantarum, 18:3 (1996)

• 1. Biological nitrogen fixation: An efficient source of nitrogen for sustainable agricultural production?.- 2. Sustainable agriculture in the semi-arid tropics through biological nitrogen fixation in grain legumes.- 3. Enhancing crop legume N2 fixation through selection and breeding.- 4. Enhancing legume N2 fixation through plant and soil management.- 5. Role of legumes in providing N for sustainable tropical pasture systems.- 6. Management of biological N2 fixation in alley cropping systems: Estimation and contribution to N balance.- 7. Manipulation of rhizobia microflora for improving legume productivity and soil fertility: A critical assessment.- 8. Green manure technology: Potential, usage, and limitations. A case study for lowland rice.- 9. Biological nitrogen fixation associated with sugar cane and rice: Contributions and prospects for improvement.- 10. Biological N2 fixation by heterotrophic and phototrophic bacteria in association with straw.- 11. Potential and pitfalls of trying to extend symbiotic interactions of nitrogen-fixing organisms to presently non-nodulated plants, such as rice.- 12. New techniques for studying competition by Rhizobia and for assessing nitrogen fixation in the field.- 13. Future benefits from biological nitrogen fixation: An ecological approach to agriculture.- 14. Research evaluation and impact analysis of biological nitrogen fixation.- Author index.

'The book is highly recommended for advanced students of agriculture as well as for agroculturalists, agrochemists, plant breeders and also also who are interested in various aspects of conservation and improving the natural resources with special reference to problems that are close to sustainable agriculture.' Acta Physiologiae Plantarum, 18:3 (1996)

• 1. Biological nitrogen fixation: An efficient source of nitrogen for sustainable agricultural production?.- 2. Sustainable agriculture in the semi-arid tropics through biological nitrogen fixation in grain legumes.- 3. Enhancing crop legume N2 fixation through selection and breeding.- 4. Enhancing legume N2 fixation through plant and soil management.- 5. Role of legumes in providing N for sustainable tropical pasture systems.- 6. Management of biological N2 fixation in alley cropping systems: Estimation and contribution to N balance.- 7. Manipulation of rhizobia microflora for improving legume productivity and soil fertility: A critical assessment.- 8. Green manure technology: Potential, usage, and limitations. A case study for lowland rice.- 9. Biological nitrogen fixation associated with sugar cane and rice: Contributions and prospects for improvement.- 10. Biological N2 fixation by heterotrophic and phototrophic bacteria in association with straw.- 11. Potential and pitfalls of trying to extend symbiotic interactions of nitrogen-fixing organisms to presently non-nodulated plants, such as rice.- 12. New techniques for studying competition by Rhizobia and for assessing nitrogen fixation in the field.- 13. Future benefits from biological nitrogen fixation: An ecological approach to agriculture.- 14. Research evaluation and impact analysis of biological nitrogen fixation.- Author index.