Biological Nitrogen Fixation In Farming Systems Of The Tropics

Author : A. Ayanaba,P. J. Dart
Publisher : John Wiley & Sons
Page : 400 pages
File Size : 44,8 Mb
Release : 1977
Category : Technology & Engineering
ISBN : CORNELL:31924000572663

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Biological Nitrogen Fixation in Farming Systems of the Tropics by A. Ayanaba,P. J. Dart Pdf

The symposium's objectives included an appraisal of the most recent studies relating to microbiological nitrogen fixation in tropical soils, consideration of aways and means of improving management of soils and crops in tropical farming systems to increase biological nitrogen fixation, of exploring ways of concurrently improving both legumes and other hosts and their symbionts to enhance nitrogen fixation, and of recommending the research needed and means of collaborating in the research effort.

Author : A. Ayanaba,P. J. Dart
Publisher : Unknown
Page : 377 pages
File Size : 46,5 Mb
Release : 1977
Category : Electronic
ISBN : OCLC:251400736

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Biological Nitrogen Fixation in Farming Systems of the Tropics by A. Ayanaba,P. J. Dart Pdf

Author : A. Ayanaba,P J. Dart
Publisher : Unknown
Page : 391 pages
File Size : 54,5 Mb
Release : 1970
Category : Electronic
ISBN : 0783763646

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Biological Nitrogen Fixation in Farming Systems of the Tropics by A. Ayanaba,P J. Dart Pdf

Author : K. E. Giller
Publisher : CABI
Page : 443 pages
File Size : 54,8 Mb
Release : 2001
Category : Science
ISBN : 9781845933043

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Nitrogen Fixation in Tropical Cropping Systems by K. E. Giller Pdf

Nitrogen fixation by leguminous plants is especially important when farmers are trying to minimise fertilizer use for cost or environmental reasons. This second edition of the highly successful book, first published in 1991, contains thoroughly updated and revised material on the theory and practice of nitrogen fixation in tropical cropping systems.

Author : Rachid Serraj
Publisher : CRC Press
Page : 392 pages
File Size : 48,6 Mb
Release : 2004
Category : Technology & Engineering
ISBN : STANFORD:36105114369759

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Symbiotic Nitrogen Fixation by Rachid Serraj Pdf

The International Workshop on Biological Nitrogen Fixation for Increased Crop Productivity, Enhanced Human Health and Sustained Soil Fertility was held in June 2002 at ENSAM-INRA, Montpellier, France. The main goal of the workshop was to define research strategies for a Challenge Program initiative on Biological Nitrogen Fixation, and develop a pre-proposal based on the concept note submitted and approved by the CGIAR iSC. More than 35 participants from various scientific disciplines, research institutions and from four different continents (Africa, Asia, Americas and Europe) attended the workshop. This book, based on the proceedings of the workshop, takes a holistic approach to harnessing legume BNF technologies, starting from a socioeconomic perspective, and progressing to agronomic and genetic options, and bringing together innovative aspects and participatory research strategies.

Author : J.K. Ladha,M.B. Peoples
Publisher : Int. Rice Res. Inst.
Page : 300 pages
File Size : 51,9 Mb
Release : 1995-09-30
Category : Nature
ISBN : 9780792334132

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Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems by J.K. Ladha,M.B. Peoples Pdf

Reprinted from Plant and Soil, v.174, nos.1-2 (1995), this volume is devoted to discussions on the role of biological nitrogen fixation (BNF) in agricultural sustainability. Papers presented on BNF in crop forage and tree legumes are augmented with discussion of integrated farming systems involving BNF, soil and N management, and recycling of legume residues. BNF by non-legumes is discussed and attempts to transform cereals into nodulating plants are critically reviewed. Also described are advances in the development of new methodologies to understand symbiotic interactions and to assess N-2 fixation in the field; means of enhancing BNF through plant and soil management; breeding and selection; problems encountered in exploiting BNF under farmers' field conditions; and promising approaches to improve BNF exploitation. Lacks a subject index. Annotation copyright by Book News, Inc., Portland, OR

Author : African Association for Biological Nitrogen Fixation. Conference
Publisher : IITA
Page : 512 pages
File Size : 55,7 Mb
Release : 1992-10-27
Category : Science
ISBN : 0471935603

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Biological Nitrogen Fixation and Sustainability of Tropical Agriculture by African Association for Biological Nitrogen Fixation. Conference Pdf

Biological nitrogen fixation in tropical agrosystems: twenty years of biological nitrogen fixation research in Africa; Sustainable agriculture: definition and measurement; Biological nitrogen fixation systems in tropical ecosystems: an overview; A protocol for screening legumes as soil-improving crops; The sustenance of tropical agriculture with multipurpose azolla; Facteurs pedoclimatiques limitant la lixation biologique l'azole; Response of some tropical nitrogen-fixing woody legumes to drought and inoculation with mycorrhiza; Improvement to the Phaseolus/Rhizobium symbiosis, with particular reference to the Caribbean region; Effect of pest management systems on biological nitrogen fixation; Agronomic evaluation of a rock phosphate as a phosphorus source for Leucaena leucocephala grown on an utisol; Nodulation of soybean grown under field conditions and inoculated with Bradyrhizobium japonicum strains; Effect of fertilization and Rhizobium inoculation on the growth of Leucaena and Gliricidia on an alfisol in south-western Nigeria; Early growth and nodulation in Leucaena and Gliricidia and the effects or pruning on biomass productivity; Comparative stude on the growth and productivity of Sesbania and Leucaena in the Central Plateau region, Rwanda; Supernoculation and non-nodulation mutants of soybean; Genetically improved rhizobia and their use in agriculture; Sustainability of nitrogen-fixing cropping systems: Nodulation and nitrogen fixation and transfer in a cowpea/rice cropping system; The role of legumes in sustaiing soil productivity and controlling soil erosion; Fitting soil-improving legumes into inland valley rice-baes cropping systems in West Africa; Herbage yield and soil fertility restoration potential of some tropical forage legumes.

Author : B. T. Kang,J. van der Heide
Publisher : Unknown
Page : 372 pages
File Size : 44,6 Mb
Release : 1985
Category : Agricultural systems
ISBN : WISC:89031274319

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Nitrogen Management in Farming Systems in Humid and Subhumid Tropics by B. T. Kang,J. van der Heide Pdf

Author : Johanna Döbereiner
Publisher : Unknown
Page : 416 pages
File Size : 45,5 Mb
Release : 1978
Category : Agriculture
ISBN : 1461589584

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Limitations and Potentials for Biological Nitrogen Fixation in the Tropics by Johanna Döbereiner Pdf

Cerrado a region of high agricultural potential that requires nitrogen; Potential for nitrogen fixation in tropical legumes and grasses; Free-living bacteria; Nitrogen fixation by soil algae of temperate and tropical soils; Contribution of the legume-Rhizobium symbiosis to the ecosystem and food production; Plant influence in symbiotic nitrogen fixation; Plant photosynthesis; Interactions of plant photosynthesis with dinitrogen fixation and nitrate assimilation; Some aspects of the Alnus-type root nodule symbiosis; Legumes and acid soils; Micronutrient requirements of legume-Rhizobium symbiosis in the tropics; Ecology of legume-Rhizobium symbiosis; Nitrogenase systems; Relationship between hydrogen metabolism and nitrogen fixation in legumes; Ammonia assimilation in N2-Fixing systems; Genetics and regulation of nitrogen fixation; Leghaemoglobin, oxygen supply and nitrogen fixation: studies with soybean nodules; Nitrogen fixation by Rhizobium spp. in laboratory culture media; Limiting factors in grass nitrogen fixation; Physiology and biochemistry of Spirillum lipoferum; Taxonomy of the root-associated nitrogen fixing bacterium Spirillum lipoferum; Abstracts of original papers; Abstracts of posters.

Author : J.K. Ladha,T. George,C. Bohlool
Publisher : Springer Science & Business Media
Page : 212 pages
File Size : 41,8 Mb
Release : 2013-03-09
Category : Nature
ISBN : 9789401709101

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Biological Nitrogen Fixation for Sustainable Agriculture by J.K. Ladha,T. George,C. Bohlool Pdf

Chemical fertilizers have had a significant impact on food production in the recent past, and are today an indispensable part of modern agriculture. On the other hand, the oil crisis of the 1970s and the current Middle East problems are constant reminders of the vulnerability of our fossil fuel dependent agriculture. There are vast areas of the developing world where N fertilizers are neither available nor affordable and, in most of these countries, balance of payment problems have resulted in the removal of N fertilizer subsidies. The external costs of environmental degradation and human health far exceed economic concerns. Input efficiency of N fertilizer is one of the lowest and, in turn, contributes substantially to environmental pollution. Nitrate in ground and surface waters and the threat to the stability of the ozone layer from gaseous oxides of nitrogen are major health and environmental concerns. The removal of large quantities of crop produce from the land also depletes soil of its native N reserves. Another concern is the decline in crop yields under continuous use of N fertilizers. These economic, environmental and production considerations dictate that biological alternatives which can augment, and in some cases replace, N fertilizers must be exploited. Long-term sustainability of agricultural systems must rely on the use and effective management of internal resources. The process of biological nitrogen fixation offers and economically attractive and ecologically sound means of reducing external nitrogen input and improving the quality and quantity of internal resources. In this book, we outline sustainability issues that dictate an increased use of biological nitrogen fixation and the constraints on its optimal use in agriculture.

Author : Gudni G. Hardarson,William J. Broughton
Publisher : Springer Science & Business Media
Page : 238 pages
File Size : 45,8 Mb
Release : 2003-07-31
Category : Nature
ISBN : 1402012373

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Maximising the Use of Biological Nitrogen Fixation in Agriculture by Gudni G. Hardarson,William J. Broughton Pdf

Incorporating contributions from microbiologists, molecular biologists, plant breeders and soil scientists this volume reports the results and recommendations of an FAO/IAEA meeting of twelve experts on biological nitrogen fixation. This volume will be invaluable to scientists working on nitrogen fixation, soil microbiology, agronomy and crop production as well as farm advisers and extension specialists. Maximising the Use of Biological Nitrogen Fixation in Agriculture is unique in that it: -reviews the latest thinking on various aspects of biological nitrogen fixation technology and applications; -reviews the possibilities in enhancing nitrogen fixation in various cropping systems; -shows ways how biological nitrogen fixation can be used to enhance crop production; -considers the applicability of these technologies to small farmers in developing countries.

Author : John Raymond Postgate
Publisher : Unknown
Page : 76 pages
File Size : 40,7 Mb
Release : 1972
Category : Technology & Engineering
ISBN : WISC:89034615146

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Biological Nitrogen Fixation by John Raymond Postgate Pdf

Author : O. P. Rupela,C. Johansen,David F. Herridge
Publisher : Semi-Arid Tropics
Page : 424 pages
File Size : 46,5 Mb
Release : 1997
Category : Cropping systems
ISBN : CORNELL:31924108491709

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Extending Nitrogen Fixation Research to Farmers' Fields by O. P. Rupela,C. Johansen,David F. Herridge Pdf

Author : Peter H. Graham,Susan C. Harris
Publisher : Unknown
Page : 776 pages
File Size : 40,5 Mb
Release : 1982
Category : Agriculture
ISBN : UTEXAS:059173023601423

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Biological Nitrogen Fixation Technology for Tropical Agriculture by Peter H. Graham,Susan C. Harris Pdf

Keynote addresses. Plant factors affecting N2 fixation. Technology for inoculant production. Environmental factors affecting symbiotic n2 fixation. Inoculation trials. N2 fixation in grain legumes. N2 fixation in pasture legume. N2 fixation in trees. Associative n2 fixation. The azolla/ananaena association. Critique of methodologies. The nitrogen relationships of maize/bean associations. Assessing the nitrogen contribuktion of cowpea (Vigna unguiculata) in monoculture and intercroped. Nitrogen fixation by groundnut (Arachis hypogeae) in intercropped and rotational systems. Effect of cowpeas in cereal rotations in conditions in Upper volta. Residual effects of pigeopea (Cajanus cajan). Atechology assessment of biological nitrogen fixation. Economic analysis of biological nitrogen fixation. Research and development for biological nitrogen fixation in India. The brazilian program in biological nitrogen fixation. Internationally sponsored development of biological nitrogen fixation technology. Research on biological nitrogen fixation in the international agricultural research centers.

Author : Patrice Dion
Publisher : Springer Science & Business Media
Page : 322 pages
File Size : 46,6 Mb
Release : 2010-02-04
Category : Technology & Engineering
ISBN : 9783642050763

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Soil Biology and Agriculture in the Tropics by Patrice Dion Pdf

The relationships between soils, microbes and humans are of crucial relevance in the tropics, where plant stress and microbial activity are exacerbated. This volume of Soil Biology presents the living component of tropical soils, showing how it is shaped by environmental conditions and emphasizing its dramatic impact on human survival and well-being. Following an introduction to the specificities of tropical soils and of their microbial communities, the biological aspects of soil management are examined, dealing with land use change, conservation and slash-and-burn agriculture, the restoration of hot deserts, agroforestry and paddy rice cultivation. As they are of particular relevance for tropical agriculture, symbioses of plants and microbes are thoroughly covered, as are the biodegradation of pesticides and health risks associated with wastewater irrigation. Lastly, traditional soil knowledge is discussed as a key to our sustainable presence in this world.