Biofertilizer technology (71 risultati)
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Condizione: New. pp. xvi + 262 Illus.
Lingua: Inglese
Editore: Aavishkar Publishers & Distributors Aavishkar 2012
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Condizione: New. pp. 608 4th Revised Edition.
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Da: Biblios, frankfurt am main, HESSE, GermaniaBiblios
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Da: Biblios, frankfurt am main, HESSE, GermaniaBiblios
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Da: Vedams eBooks (P) Ltd, New Delhi, IndiaVedams eBooks (P) Ltd
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Hardbound. Condizione: As New. New. Contents Preface. 1. Biofertilizers and sustainable agriculture. 2. Nitrogen fixation. 3. Microbial inoculants for nitrogen fixation. 4. Rhizobium biofertilizer. 5. Application of biofertilizers in field crops. 6. Production of rhizobium biofertilizer. 7. Azospirillum biofertilizer. 8. Azotoba…cter biofertilizer. 9. Blue green algae and azolla as biofertilizer. 10. Estimation of nitrogen fixation. 11. Biological mobilization of phosphorus. 12. Vesicular arbuscular mycorrhizae (VAM). 13. The cyclic system of nutrient management. 14. Laboratory culture of microbial biofertilizers. 15. Mass production of biofertilizers. 16. Quality control in bioinoculants. 17. Perspectives. Selected bibliography. Subject index. Biofertilizer is still an unclear term. It can be easily found that biofertilizers are identified as plant extract composted urban wastes and various microbial mixtures with unidentified constituents and chemical fertilizer formulations supplemented with organic compounds. Likewise the scientific literature has a very open interpretation of the term biofertilizer representing everything from manures to plant extracts. However biofertilizer is most commonly referred to the use of soil microorganisms to increase the availability and uptake of mineral nutrients for plants. Therefore it is necessary to define the term biofertilizer. There is a proposal that biofertilizer be defined as a substance contains living microorganisms which colonizes the rhizosphere or the interior of the plant and promotes growth by increasing the supply or availability of primary nutrient and/or growth stimulus to the target crop when applied to seed plant surfaces or soil. Biofertilizers have definite advantage over chemical fertilizers. Chemical fertilizers supply over nitrogen whereas biofertilisers provide in addition to nitrogen certain growth promoting substances like hormones vitamins amino acids etc. crops have to be provided with chemical fertilizers repeatedly to replenish the loss of nitrogen utilised for crop growth. On the other hand biofertilizers supply the nitrogen continuously throughout the entire period of crop growth in the field under favourable conditions. The name itself is self explanatory. The fertilizers are used to improve the fertility of the land using biological wastes hence the term biofertilizers and biological wastes do not contain any chemicals which are detrimental to the living soil. They are extremely beneficial in enriching the soil with those microorganisms which produce organic nutrients for the soil and help combat diseases. The farm produce does not contain traces of hazardous and poisonous materials. Thus those products are accepted across the world as organic ones. Hence for organic farming the use of biofertilizers is mandatory. The galaxy of biofertilizers are many. For example phospho which releases insoluble phosphorus in soil and fix this phosphorus in clay minerals which is of great significance in agriculture. Similarly rhizobacteria play important role in agriculture by inducing nitrogen fixings nodules on the root of legumes such as peas beans clove and alfalfa. Azotobactor fixes the atmospheric nitrogen in the soil and make it available to the plants. It protects the roots from other pathogens present in the soil. Composter or decomposing culture breaks down any organic matter such as dead plants farm yard waste cattle waste etc. thereby increasing the soil productivity. Vermicompost is 100% pure eco friendly organic fertilizer. This organic fertilizer has nitrogen phosphorus potassium organic carbon sulphur hormones vitamins enzymes and antibiotics which helps to improve the quality and quantity of yield. Biocompost is eco friendly organic fertilizer which is prepared from the sugar industry waste material which is decomposed and enriched of with various plants and human friendly bacteria and fungi. Biocompost consists of nitrogen phosphate solubilizing bacteria and various useful fungi like dec.
Editore: Oxford Book Company
Da: Majestic Books, Hounslow, , Regno UnitoMajestic Books
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Condizione: New. pp. 256.
Editore: Oxford Book Company
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Da: Majestic Books, Hounslow, , Regno UnitoMajestic Books
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Da: Biblios, frankfurt am main, HESSE, GermaniaBiblios
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Da: Vedams eBooks (P) Ltd, New Delhi, IndiaVedams eBooks (P) Ltd
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Hardcover. Condizione: New. Condizione sovraccoperta: 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 Sporo…carps. 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.
Da: Biblios, frankfurt am main, HESSE, GermaniaBiblios
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Da: Vedams eBooks (P) Ltd, New Delhi, IndiaVedams eBooks (P) Ltd
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Soft cover. Condizione: New. 2nd Edition. Biofertilizers are seen as an important alternative technology, since the negative externalities of chemical fertilizers have become well known. The use of the latter has led to considerable environmental cost. Biofertilizers do not pollute the soil and do not disrupt the ecological bala…nce, and hence are environment friendly. An increasing number of farmers are using biofertilizers, and the numbers of biofertilizer manufacturing units have also grown considerably. Organic farming system in India is not new and is being followed from ancient time. It is a method of farming system which primarily aimed at cultivating the land and raising crops in such a way, as to keep the soil alive and in good health by use of organic wastes (crop, animal and farm wastes, aquatic wastes) and other biological materials along with beneficial microbes (biofertilizers) to release nutrients to crops for increased sustainable production in an eco friendly pollution free environment. Organic farming has emerged as an important priority area globally in view of the growing demand for safe and healthy food and long term sustainability and concerns on environmental pollution associated with indiscriminate use of agrochemicals.
