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Biological Nitrogen Fixation and Sustainability of Tropical Agriculture

Author : African Association for Biological Nitrogen Fixation. Conference

Publisher : IITA

Page : 512 pages

File Size : 19,28 MB

Release : 1992-10-27

Category : Science

ISBN : 9780471935605

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Book Description

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.



Biological Nitrogen Fixation for Sustainable Agriculture

Author : J.K. Ladha

Publisher : Springer Science & Business Media

Page : 212 pages

File Size : 45,16 MB

Release : 2013-03-09

Category : Nature

ISBN : 9401709106

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Book Description

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.





Biological Fixation of Nitrogen for Ecology and Sustainable Agriculture

Author : Andrzej B. Legocki

Publisher : Springer Science & Business Media

Page : 352 pages

File Size : 47,50 MB

Release : 1997

Category : Nature

ISBN : 9783540620563

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Book Description

Structural chemistry and biochemistry of nitrogenase; Signal perception, transduction and cell cycle genes in nodulation; Plant genes involved in nodulation; Bacterium - plant surface interaction; Molecular microbial ecology; Nitrogen fixation systems; Nitrogen fixation in sustainable agriculture; Carbon-nitrogen metabolism in symbiotic systems; Oxygen regulation in nitrogen fixation; Model plants for nitrogen fixation and legume genetics; Coevolution of symbiotic systems.



Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment

Author : Dietrich Werner

Publisher : Springer Science & Business Media

Page : 380 pages

File Size : 43,41 MB

Release : 2005-10-24

Category : Technology & Engineering

ISBN : 9781402035425

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Book Description

Sustainability has a major part to play in the global challenge of continued development of regions, countries, and continents all around the World and biological nitrogen fixation has a key role in this process. This volume begins with chapters specifically addressing crops of major global importance, such as soybeans, rice, and sugar cane. It continues with a second important focus, agroforestry, and describes the use and promise of both legume trees with their rhizobial symbionts and other nitrogen-fixing trees with their actinorhizal colonization. An over-arching theme of all chapters is the interaction of the plants and trees with microbes and this theme allows other aspects of soil microbiology, such as interactions with arbuscular mycorrhizal fungi and the impact of soil-stress factors on biological nitrogen fixation, to be addressed. Furthermore, a link to basic science occurs through the inclusion of chapters describing the biogeochemically important nitrogen cycle and its key relationships among nitrogen fixation, nitrification, and denitrification. The volume then provides an up-to-date view of the production of microbial inocula, especially those for legume crops.



Properties and Management of Soils in the Tropics

Author : Pedro A. Sanchez

Publisher : Cambridge University Press

Page : 685 pages

File Size : 30,68 MB

Release : 2019-01-10

Category : Business & Economics

ISBN : 1107176050

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Book Description

Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.



Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems

Author : J.K. Ladha

Publisher : Int. Rice Res. Inst.

Page : 300 pages

File Size : 15,82 MB

Release : 1995-09-30

Category : Nature

ISBN : 0792334132

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Book Description

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



Nitrogen Fixation in Tropical Cropping Systems

Author : K. E. Giller

Publisher : CABI

Page : 443 pages

File Size : 46,99 MB

Release : 2001

Category : Science

ISBN : 1845933044

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Book Description

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.



Biological Nitrogen Fixation

Author : John Raymond Postgate

Publisher :

Page : 76 pages

File Size : 31,72 MB

Release : 1972

Category : Technology & Engineering

ISBN :

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The Plant Microbiome in Sustainable Agriculture

Author : Alok Kumar Srivastava

Publisher : John Wiley & Sons

Page : 320 pages

File Size : 34,47 MB

Release : 2021-02-16

Category : Science

ISBN : 111950516X

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Book Description

The most up-to-date reference on phytomicrobiomes available today The Plant Microbiome in Sustainable Agriculture combines the most relevant and timely information available today in the fields of nutrient and food security. With a particular emphasis on current research progress and perspectives of future development in the area, The Plant Microbiome in Sustainable Agriculture is an invaluable reference for students and researchers in the field, as well as those with an interest in microbiome research and development. The book covers both terrestrial and crop associated microbiomes, unveiling the biological, biotechnological and technical aspects of research. Topics discussed include: Developing model plant microbiome systems for various agriculturally important crops Defining core microbiomes and metagenomes in these model systems Defining synthetic microbiomes for a sustainable increase in food production and quality The Plant Microbiome in Sustainable Agriculture is written to allow a relative neophyte to learn and understand the basic concepts involved in phytomicrobiomes and discuss them intelligently with colleagues.