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Azolla As A Green Manure
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Book Synopsis Azolla As A Green Manure by : Thomas A Lumpkin
Download or read book Azolla As A Green Manure written by Thomas A Lumpkin and published by Westview Press. This book was released on 1982-10-17 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: History. Botany and ecology. Physiology. Nursery culture and multiplication. Field Cultivation. Pests and pest control. Use in labor-intensive farming systems. Potential mechanization of azzola cultivation in rice fields. Other uses. Potential for the future.
Download or read book Azolla written by Thomas A. Lumpkin and published by . This book was released on 1980 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Azolla as a Green Manure by : Thomas A. Lumpkin
Download or read book Azolla as a Green Manure written by Thomas A. Lumpkin and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Azolla as a Green Manure in a Phosphate Deficient Soil by : Laddawan Loudhapasitiporn
Download or read book Use of Azolla as a Green Manure in a Phosphate Deficient Soil written by Laddawan Loudhapasitiporn and published by . This book was released on 1981 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Azolla is a floating aquatic fern which has a symbiotic association with the cynobacterium, Anabaena azollae. Anabaena is able to reduce atmospheric N2 gas to nitrogeneous compounds that is then utilized by both Azolla and the symbiont as a source of essential organic nitrogen. In order to increase rice production, experiments on the cultivation of azolla as green manure crop has been conducted in a phosphate-deficient soil. This study was conducted in the IRRI greenhouse from 1979 to 1980 to determine the rate and method of phosphorus application for optimum growth of azolla and to investigate the effect of azolla used as green manure with different combinations of nitrogen and phosphorus fertilizer on rice production in a phosphate-deficient soil. The highlights of the results are as follow: 1) High level of phosphorus applied in split amounts significantly increased the growth of azola, percentage of nitrogen accumulated and phosphorus absorbed by azolla. Besides the phosphorus element, iron seemed to effect the growth of azolla in the paddy field bu the result of the experiment was not clear. The eaterlogging condition of the field depressed availability of iron, thereface disturbing the soil might have enhanced the availability of more iron supply for azolla growth. On the other hand, air-drying followed by flooding the soil resulted in the conversion of soluble ferrous phosphate to insoluble ferrie phosphate form. So, azolla growth and nitrogen accumulation were low as the soil was dried followed ...
Book Synopsis Green Manure in Rice Farming by : International Rice Research Institute
Download or read book Green Manure in Rice Farming written by International Rice Research Institute and published by IRRI. This book was released on 1988 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sustainable Agriculture Green Manure in Rice Farming by :
Download or read book Sustainable Agriculture Green Manure in Rice Farming written by and published by Int. Rice Res. Inst.. This book was released on with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of the Physiology of Azolla and Its Use as a Green Manure for Rice by : D. S. Shobar Wiganda
Download or read book Study of the Physiology of Azolla and Its Use as a Green Manure for Rice written by D. S. Shobar Wiganda and published by . This book was released on 1986 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Azolla Green Manure on Wetland Rice and Availability of the Azolla-N by : Rosenani A. B.
Download or read book Effect of Azolla Green Manure on Wetland Rice and Availability of the Azolla-N written by Rosenani A. B. and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Primer on Azolla Production & Utilization in Agriculture by : M. Manzoor Khan
Download or read book A Primer on Azolla Production & Utilization in Agriculture written by M. Manzoor Khan and published by . This book was released on 1983 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Azolla Utilization written by and published by Int. Rice Res. Inst.. This book was released on 1987 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Cultivation of Azolla for Animal Feed and as Green Manure for Rice Fields. La Culture Des Azolla Pour la Nourriture Des Animaux de Basse-cour Et Comme Engrais Vert Pour Les Rizieres by : A. Chevalier
Download or read book The Cultivation of Azolla for Animal Feed and as Green Manure for Rice Fields. La Culture Des Azolla Pour la Nourriture Des Animaux de Basse-cour Et Comme Engrais Vert Pour Les Rizieres written by A. Chevalier and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Azolla on Irrigated Rice in Brazil by : Karl Georg Gutbrod
Download or read book Effect of Azolla on Irrigated Rice in Brazil written by Karl Georg Gutbrod and published by . This book was released on 1987 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Azolla green manure effect on paddy rice was compared to N fertilization with urea in 4 cultivation systems at two sites in Brazil, during the seasons 1983/84 and 1984/85. Fertilizer nitrogen equivalence was calculated by plotting parameter values obtained in Azolla treatments on the response regressions to N fertilization.
Book Synopsis Microbiology of Tropical Soils and Plant Productivity by : Y.R. Dommergues
Download or read book Microbiology of Tropical Soils and Plant Productivity written by Y.R. Dommergues and published by Springer Science & Business Media. This book was released on 1982-11-30 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is an established fact that we must continually increase and improve agricultural production if we are to meet even the minimum requirements of a growing popu lation for food, shelter, and fuel. In recent years, the introduction of new plant varieties and the extensive use of fertilizers have effectively increased crop yields, but intensifying agricultural methods has often led to depleting soil fertility. Two examples of the harmful consequences of intensive farming practices are the loss of up to 2.5 cm of topsoil every 15 years in the United States through erosion and the alarming rise in environmental pollution through widespread use of pesticides. Countless other processes affecting the activity of soil micro flora and the inter actions between microorganisms and plants may pose an equal danger to soil equilibrium, but their potential hazards are often overlooked because of an insufficient understanding of soil microbiology on the part of scientists. In the first published study of its kind, the authors of this book have attempted to address major aspects of the microbial activity of soil in the tropics. Tropical conditions serve as an ideal context for a discussion of soil microbiology, since biological processes in the soil are particularly active in tropical environments in comparison to other settings and in relation to physical and chemical processes.
Book Synopsis Biological Nitrogen Fixation Associated with Rice Production by : Mustafizur Rahman
Download or read book Biological Nitrogen Fixation Associated with Rice Production written by Mustafizur Rahman and published by Springer Science & Business Media. This book was released on 2013-04-09 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological nitrogen fixation (BNF) has become important in rice farming systems because this process diminishes the need for expensive chemical fertilizers which have been associated with numerous health and environmental problems. The extensive exploitation of BNF would provide economic benefits to small farmers, avoiding all malign influences of chemical fertilizers. Meanwhile, advances in biotechnology have brought rice genetics to the threshold of new opportunities for increasing rice production. This volume focuses, in six different sessions, on the role of BNF in the improvement of rice production in the light of the current state of the art of BNF technology transfer and diffusion. New ideas on BNF technology in research, extension information and inoculant technology are also included, together with the socio-economic impacts of using BNF in rice farm systems.
Book Synopsis Climate Change, Hazards and Adaptation Options by : Walter Leal Filho
Download or read book Climate Change, Hazards and Adaptation Options written by Walter Leal Filho and published by Springer Nature. This book was released on 2020-02-14 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the issue of climate change risks and hazards holistically. Climate change adaptation aims at managing climate risks and hazards to an acceptable level, taking advantage of any positive opportunities that may arise. At the same time, developing suitable responses to hazards for communities and users of climate services is important in ensuring the success of adaptation measures. But despite this, knowledge about adaptation options, including possible actions that can be implemented to improve adaptation and reduce the impacts of climate change hazards, is still limited. Addressing this need, the book presents studies and research findings and offers a catalogue of potential adaptation options that can be explored. It also includes case studies providing illustrative and inspiring examples of how we can adapt to a changing climate.
Book Synopsis Genetic Engineering for Nitrogen Fixation by : Alexander Hollaender
Download or read book Genetic Engineering for Nitrogen Fixation written by Alexander Hollaender and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a time in scientific research when a number of developments coincide making it possible to progress with a tough and complicated problem. It is believed that such a time has come in the area of biological nitrogen fixation. A better understanding of photosynthesis, cell hybridization, plasmid, and gene transfer between cells not necessarily genetically related, have opened new avenues of research. New developments in traditional genetics, cell biology, biochemistry, including enzyme chemistry, and plant physi ology have brought about the feeling this is a most appro priate time to pull together the different approaches in a conference where the lines of research could be discussed and thus help to speed up developments in this area. What makes biological nitrogen fixation especially im portant is the promise that a good understanding of the basic problem would help us to make organisms more amenable to fix nitrogen, not only in symbiosis with legumes, but also with other plant species and develop a wider variety of organisms with the ability to fix N • It will also 2 encourage a search for naturally occurring N2 fixing organ isms other than the traditional N2 fixers. Some success has already been encountered in this area. Success in broadening the field of nitrogen fixing would help to increase food supply, especially in de veloping countries which cannot afford to purchase synthetic nitrogen sources.
Book Synopsis Practical Application of Azolla for Rice Production by : W.S. Silver
Download or read book Practical Application of Azolla for Rice Production written by W.S. Silver and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of rice has increased considerably in recent years due to the release of improved varieties and the adoption of better fertilization practices. Nevertheless, the production and use of inorganic N fertilizer involves costly investments in terms of energy and transport, the need for complex manufacturing plants, as well as the potential for environmental pollution. The use of agricultural systems that include dinitrogen fixing organisms appears to be an economically sound cultural practice. In the particular case of rice, biological nitrogen fixation by Azolla, blue-green algae (BGA), and heterotrophic microorganisms has long been recognized, in southeast Asia, as a fertilizer for rice culture. The Azolla-Anabaena association has the unique property of being able to retain a significant amount of nitrogenase activity in the presence of combined nitrogen, making the system compatible with inorganic nitrogen fertilization. Researchers working with Azolla (N fixation) are dispersed in 2 countries of southeast Asia, Africa, Europe and Latin America, making it difficult to share ideas, concepts and research results on a more personal basis. Considering the potential positive impact of growing rice in association with Azolla, and the lack, to date, of an international gathering of scientists dedicated to Azolla research, the First International Workshop on "Practical Applications of Azolla for Rice Production" was organized by the University of Puerto Rico-Mayaguez Campus.
