totawat (6 Ergebnisse)

Zustand: New. pp. 376 Figures, Illus., Map.

Zustand: New. pp. 240 Figures Map.

Zustand: New. pp. 320 Illus., Map.

Zustand: New. pp. 480.

Hardcover. Zustand: New. Zustand des Schutzumschlags: New. 2nd Edition. Contents Preface. I. Azolla 1. Introduction. 2. Occurrence. 3. Distribution. 4. Vernacular names. 5. Taxonomy. 6. Morphological characters. 7. Life cycle. 8. Fern Alga relation. 9. Growth. 10. Factors affecting growth. 11. Sporulation. 12. Structure of Sporocarps. 13. Sporophyte reproduced. 14. Induction of sporulation. 15. Sporocarp collection from the fresh A. microphylla. 16. Spore collection from Azolla mexicana. 17. Azolla spore collection. 18. Decomposition of sporulated Azolla and isolation of spores. 19. Sterilization of sporocarps. 20. Germination of sporocarps in solid agar medium. 21. Germination of sporocarp in moist filter paper. 22. Germination of megasporocarp in liquid medium. 23. Hybrid Azolla. 24. Spore inoculum production. 25. Presoaking of sporocarps for germination. 26. Storage and viability of spore inoculum. 27. Germination of sporocarps. 28. Factors affecting sporocarp growth. 29. Using sporocarps to culture sporophytes. 30. Germplasm shipment. 31. Nitrogen fixation. 32. Measuring N2 fixation. 33. Availability of N2 fixed. 34. Agronomic significance. 35. Methods of Azolla use in rice culture. 36. Field application. 37. Management practices. II. Blue green algae 1. Introduction. 2. Distribution. 3. Systematic position. 4. Origin and affinities. 5. Salient features. 6. Taxonomic classification. 7. Form structure and development of B.G.A. 8. Reproduction. 9. Life cycle and photoregulation. 10. Growth characteristics. 11. Nitrogen fixation. 12. Production of seeding material. 13. Straw based production technology of commercial purposes. 14. Algal production technology. 15. Multiplication of B.G.A. 16. Inoculation technique. 17. Survival and persistence of the inoculum in the soil. 18. Biological Nitrogen fixation. 19. Effect of algalization on rice yields. 20. Reclamation of sodic soils. 21. Economics of Algal inoculation. 22. Future prospectus. Conclusions. Selected references. Glossary. Index. Man made fertilizers have come to stay in the present century for increasing the output of agricultural production and to meet ever increasing demand of human population which has been further accentuated by the limited availability of additional fertile farm land. Industrial nitrogen is heavily dependent on energy derived from fossil fuel which is getting depleted at a very fast rate. On the contrary biological nitrogen fixation requiring nearly half the quantum of energy (needed for industrial fixation) and is dependent on energy from renewable resources such as products of photosynthesis and organic matter in the soil. The natural organic nitrogen provided by the biofertilizers to the agro ecosystem do not pose any health risk to humans which is being seriously apprehended by the use of chemical and synthetic inorganic nitrogen. In view of escalating energy costs it is essential for us to evolve and adopt a strategy of using biological fertilizers along with chemical fertilizers. This calls for adoption of integrated nutrient supply by using a judicious combination of chemical fertilizers and biofertilizers. The very objective of boosting crop productivity by chemical fertilizers is becoming self defeating and unsustainable. An effort has been made in this book to provide an up to date comprehensive account of fundamental as well as applied aspects related to biological N2 fixation through Azolla and Blue green algal bifertilizers. 376 pp.

Hardcover. Zustand: New. Zustand des Schutzumschlags: New. 2nd Edition. Contents: Preface. 1. Salt-affected soils - their limitations and potentialities/L.L. Somani and K.L. Totawat. 2. Soil salinity, plant growth and microbes/H.N. Gour and A. Kumar. 3. Use of amendments for reclamation of salt-affected soils/L.L. Somani and K.L. Totawat. 4. Land management for salt-affected soils/L.L. Somani, M.C. Mundra, D.L. Lavti and K.C. Laddha. 5. New vistas in halotolerance/A. Kumar and H.N. Gour. 6. Fertilizer management in salt-affected soils/K.L. Totawat and L.L. Somani. 7. Drainage for salt-affected soils/R.V. Singh and K.L. Totawat. 8. Quality and suitability of saline water for irrigation/L.L. Somani and K.L. Totawat. 9. Saline waters - its effect on soils and plants/D.C. Joshi and B.L. Jain. 10. Irrigation technology and water management/L.L. Somani. 11. Osmoregulatory mechanisms - their role and extent in plant salt resistance/S.K. Sharma. 12. Crop husbandry for salt-affected soils/L.L. Somani, G.L. Sharma and R.K. Mehra. 13. Afforestation of salt-affected soils/G.N. Gupta and Premlal. 14. Breeding and screening techniques for salt tolerance in crop plants/S.R. Maloo. 15. Transfer of soil reclamation technology/S.L. Intodia and Rekha Upadhyaya. 16. Physiology of salt tolerance/S.K. Sharma, G.L. Maliwal, L.L. Simani and S.L. Mundra. 17. Bioremediation phytoremediation of salt affected soils/L.L. Somani. 18. Glossary of technical terms related to salinity/H.S. Purohit, S.L. Mundra and L.L. Somani. Glossary.