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Author : M. de F. FIORI
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (79 download)
Download or read book A Report on Rice Crop and Azolla Research in Brazil written by M. de F. FIORI and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Karl Georg Gutbrod
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.E/5 ( download)
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.
Author : W.S. Silver
Publisher : Springer Science & Business Media
ISBN 13 : 9400962010
Total Pages : 227 pages
Book Rating : 4.4/5 (9 download)
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.
Author : Thomas A. Lumpkin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (349 download)
Download or read book Azolla for Agriculture in the Americas written by Thomas A. Lumpkin and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9711041790
Total Pages : 305 pages
Book Rating : 4.7/5 (11 download)
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:
Author : James Lang
Publisher : Univ of North Carolina Press
ISBN 13 : 0807862711
Total Pages : 204 pages
Book Rating : 4.8/5 (78 download)
Download or read book Feeding a Hungry Planet written by James Lang and published by Univ of North Carolina Press. This book was released on 2000-11-09 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice is the food crop the world depends on most. In Feeding a Hungry Planet, James Lang demonstrates how research has benefited rice growers and increased production. He describes the life cycle of a rice crop and explains how research is conducted and how the results end up growing in a farmer's field. Focusing on Asia and Latin America, Lang explores lowland and upland rice systems, genetics, sustainable agriculture, and efforts to narrow the gap between yields at research stations and those on working farms. Ultimately, says Lang, the ability to feed growing populations and protect fragile ecologies depends as much on the sustainable on-site farm technologies as on high-yielding crop varieties. Lang views agriculture as a chain of events linking the farmer's field with the scientist's laboratory, and he argues that rice cultivation is shaped by different social systems, cultures, and environments. Describing research conducted by the International Rice Research Institute in the Philippines and by the International Center for Tropical Agriculture in Colombia, he shows how national programs tailor research to their own production problems. According to Lang, the interaction of research programs, practical problem solving, and local extension efforts suggests a new model for international development.
Author : W. S. Silver
Publisher :
ISBN 13 : 9789400962026
Total Pages : 240 pages
Book Rating : 4.9/5 (62 download)
Download or read book Practical Application of Azolla for Rice Production written by W. S. Silver and published by . This book was released on 2014-01-15 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Philip G. Pardey
Publisher : Intl Food Policy Res Inst
ISBN 13 : 0896291391
Total Pages : 102 pages
Book Rating : 4.8/5 (962 download)
Download or read book Assessing and Attributing the Benefits from Varietal Improvement Research in Brazil written by Philip G. Pardey and published by Intl Food Policy Res Inst. This book was released on 2004-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides a detailed economic assessment of the magnitude and sources of the economic benefits to Brazil since the early 1980s from varietal improvements in upland rice, edible beans, and soybeans. The authors pay particular attention to isolating the benefits from genetic improvement, which they distinguish from other factors that change grain yield or quality. They use detailed information on the genetic and breeding histories of each crop and the institutional arrangements for crop-improvement research in Brazil to estimate the benefits attributable to the research done by the Brazilian Agricultural Research Corporation (Embrapa) and by other Brazilian agencies. They capture international spill-in effects as well. The authors also provide more general insight into the importance of addressing attribution questions in evaluating public research investments, develop some methods for doing so, and illustrate how to apply them.
Author :
Publisher :
ISBN 13 :
Total Pages : 480 pages
Book Rating : 4.0/5 ( download)
Download or read book A.I.D. Research and Development Abstracts written by and published by . This book was released on 1987 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K.S. Kumarasinghe
Publisher : Springer Science & Business Media
ISBN 13 : 9401116814
Total Pages : 156 pages
Book Rating : 4.4/5 (11 download)
Download or read book Isotopic Studies of Azolla and Nitrogen Fertilization of Rice written by K.S. Kumarasinghe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is the most limiting element for crop production. Traditionally, expensive commercial fertilizers are used to correct soil nitrogen deficiencies. Indeed, 50% of the increase in rice yields after World War II can be attributed to increased fertilizer nitrogen use. Although an increased rate of fertilizer nitrogen application has been advocated to meet the growing demand for food, it is unrealistic to advise the farmers to apply fertilizers they could hardly afford, and whose prices are likely to escalate in the years ahead. In addition, when they are not applied judiciously there are problems of environmental pollution as plants are capable of taking up only a relatively small portion of the applied nitrogen, a substantial amount being lost through various chemical and biological processes. The exploitation of cheaper alternatives or supplements to fertilizers have therefore gained much interest in recent years. Our increased interest in biological nitrogen fixation as a supplement or alternative to nitrogen fertilizers led to the convening of a consultants' meeting on `The Role of Isotopes in Studies on Nitrogen Fixation and Nitrogen Cycling by Blue-Green Algae and the Azolla-Anabaena azollae Association', in Vienna from 11--15 October 1982. The consultants' group recommended that the Joint FAI/IAEA Division of Nuclear Techniques in Food and Agriculture embark on a coordinated research programme in this field and that initial emphasis should be placed on Azolla-Anabaena symbiosis. As a result, such a programme was initiated in 1984, which was concluded in 1989. The results and conclusions reported here are those that were generated during the five years of its operation.
Author : Richard G. Wheeler
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (253 download)
Download or read book Production and Export of Corn and Rice in Brazil written by Richard G. Wheeler and published by . This book was released on 1969 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The commercial production areas of the seven regions; Some factors affecting prospects for production and exports; Aggregate prospects and emerging policy issues;
Author : Azit Kumar Podder
Publisher : Springer Science & Business Media
ISBN 13 : 9780792341970
Total Pages : 268 pages
Book Rating : 4.3/5 (419 download)
Download or read book Biological Nitrogen Fixation Associated with Rice Production written by Azit Kumar Podder and published by Springer Science & Business Media. This book was released on 1996-11-30 with total page 268 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.
Author : Surajit K. De Datta
Publisher : Int. Rice Res. Inst.
ISBN 13 : 0471097608
Total Pages : 642 pages
Book Rating : 4.4/5 (71 download)
Download or read book Principles and Practices of Rice Production written by Surajit K. De Datta and published by Int. Rice Res. Inst.. This book was released on 1981 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : I. Watanabe
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9712200256
Total Pages : 74 pages
Book Rating : 4.7/5 (122 download)
Download or read book Biofertilizer Germplasm Collections at IRRI written by I. Watanabe and published by Int. Rice Res. Inst.. This book was released on 1992 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction; Azolla; Blue-green algae; Aquatic legumes - rhizobia; Free-living N2-fixing bacteria.
Author :
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9711041049
Total Pages : 642 pages
Book Rating : 4.7/5 (11 download)
Download or read book Organic Matter and Rice written by and published by Int. Rice Res. Inst.. This book was released on 1984 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 420 pages
Book Rating : 4.3/5 (91 download)
Download or read book World Soil Resources Reports written by and published by . This book was released on 1961 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shouichi Yoshida
Publisher : Int. Rice Res. Inst.
ISBN 13 : 9711040522
Total Pages : 278 pages
Book Rating : 4.7/5 (11 download)
Download or read book Fundamentals of Rice Crop Science written by Shouichi Yoshida and published by Int. Rice Res. Inst.. This book was released on 1981 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth and development of the rice plant. Climatic environments and its influence. Mineral nutrition of rice. Nutritional disorders. Photosynthesis and respiration. Rice plant characters in relation to yielding ability. Physiological analysis of rice yield.
