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Application De La Methode Isotopique A Letude Des Bilans Azotes En Zone Tropicale Seche
Download Application De La Methode Isotopique A Letude Des Bilans Azotes En Zone Tropicale Seche full books in PDF, epub, and Kindle. Read online Application De La Methode Isotopique A Letude Des Bilans Azotes En Zone Tropicale Seche ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Soil Management by : Bobby A. Stewart
Download or read book Soil Management written by Bobby A. Stewart and published by CRC Press. This book was released on 1995-03-09 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiments and experiences discussed in Soil Management carefully document crop production systems with well-defined boundaries. These long-term agronomic trials provide a valuable data resource that has, until now, been largely ignored by both the research community and the sustainability experts. With a rigorous definition of sustainability and this data, the sustainability of various cropping systems will be more clearly illustrated than any previous effort. Particular emphasis is given to research involving the tropics and sub-tropics. This book is unique in providing an experimental basis for sustainable management of soil resources. It describes technological options for sustainable management of soil resources and identifies priorities for additional long-term experimentation needed in key ecoregions. Topics discussed include changes in soil processes and properties, environmental quality, soil management, soil dynamics, soil organic matter, and nutrient cycling. Soil Management is for those who ask whether agriculture is sustainable, want to analyze or review sustainability experiments and experiences, or wish to initiate new long-term trials. It is a valuable reference on soil processes and an excellent text for courses in soil management.
Book Synopsis Managing Organic Matter in Tropical Soils: Scope and Limitations by : Christopher Martius
Download or read book Managing Organic Matter in Tropical Soils: Scope and Limitations written by Christopher Martius and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil organic matter is a reservoir for plant nutrients, provides water-holding capacity, stabilizes soil structure against compaction and erosion, and thus determines soil productivity. All agriculture to some degree depends on soil organic matter. It has long been known that soil organic matter declines when land is taken into cultivation, and that the productivity of new agricultural land is governed by fertility contributions from decomposing natural organic matter. The expansion of agriculture to ever new and more fragile lands, particularly in tropical and developing regions, causes environmental degradation with local effects on soil quality, regional effects on landscape integrity and water quality, and global effects on carbon cycles and the atmosphere. This book summarizes current knowledge of the properties and dynamics of soil organic matter in the tropics, its role in determining soil quality, its stability and turnover, and the options for management in the context of tropical landuse systems, for a readership of resource scientists, economists and advanced students. Maintenance of organic matter is critical for preventing land degradation. Case studies and practical applications are therefore an important part of the book, as are the exploration of future directions in research and management.
Book Synopsis Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems by : Andre Bationo
Download or read book Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems written by Andre Bationo and published by Springer. This book was released on 2018-04-03 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of its efforts to improve fertilizer use and efficiency in West Africa, and following the recent adoption of the West African fertilizer recommendation action plan (RAP) by ECOWAS, this volume focuses on IFDC's technical lead with key partner institutions and experts to build on previous and current fertilizer recommendations for various crops and countries in West Africa for wider uptake by public policy makers and fertilizer industry actors.
Book Synopsis Integrated Plant Nutrition Systems by : Raoul Dudal
Download or read book Integrated Plant Nutrition Systems written by Raoul Dudal and published by Food & Agriculture Org.. This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is structured on the main themes of the consultation: the importance of plant nutrition for meeting agricultural product requirements; soil organic matter, biomass, soil microflora and management of integrated plant nutrition systems; renewable supply of plant nutrients from natural sources and plant nutrient transfer to crops; the place and role of local and external sources of plant nutrients in cropping systems and their evaluation; plant nutrient management in farming systems and in watersheds and territories; and priorities for FAO's Integrated Plant Nutrion Systems (IPNS) programme
Book Synopsis Innovations as Key to the Green Revolution in Africa by : Andre Bationo
Download or read book Innovations as Key to the Green Revolution in Africa written by Andre Bationo and published by Springer Science & Business Media. This book was released on 2011-08-30 with total page 1339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Africa can achieve self sufficiency in food production through adoption of innovations in the agriculture sector. Numerous soil fertility and crop production technologies have been generated through research, however, wide adoption has been low. African farmers need better technologies, more sustainable practices, and fertilizers to improve and sustain their crop productivity and to prevent further degradation of agricultural lands. The agricultural sector also needs to be supported by functional institutions and policies that will be able to respond to emerging challenges of globalization and climate change.
Book Synopsis Stable Isotopes in Plant Nutrition, Soil Fertility and Environmental Studies by : International Atomic Energy Agency
Download or read book Stable Isotopes in Plant Nutrition, Soil Fertility and Environmental Studies written by International Atomic Energy Agency and published by . This book was released on 1991 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a symposium jointly organized by the IAEA and FAO, Vienna, 1-5 October 1990. The objective of the symposium was to evaluate progress in the use of stable isotopes to examine various aspects of soil fertility and plant nutrition and some environmental problems, the potential and limitations of existing methods, and possibilities for further development. The meeting focused on the site level rather than the landscape level and, more specifically, on soil-plant relations, although landscape environmental aspects were also examined. The underlying theme was an assessment of current and possible future approaches to two problems of concern: how to increase or sustain productivity with minimum inputs, and how to limit environmental damage due to inappropriate land management and to industry.
Book Synopsis Appropriate Technologies for Farmers in Semi-arid West Africa by : Herbert W. Ohm
Download or read book Appropriate Technologies for Farmers in Semi-arid West Africa written by Herbert W. Ohm and published by . This book was released on 1985 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Symbiotic Nitrogen Fixation by : Rachid Serraj
Download or read book Symbiotic Nitrogen Fixation written by Rachid Serraj and published by CRC Press. This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Agrindex written by and published by . This book was released on 1993 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Christian J.M.G. Pieri Publisher :Springer Science & Business Media ISBN 13 :3642843204 Total Pages :348 pages Book Rating :4.6/5 (428 download)
Book Synopsis Fertility of Soils by : Christian J.M.G. Pieri
Download or read book Fertility of Soils written by Christian J.M.G. Pieri and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Can a continuous growth of agriculture be achieved in the sub-Sahara region without inducing irreversible damage to the ecosystem? Until now, doubts have been expressed as to the actual capacity of the soils to sustain a desirable increase of production which can match the requirements of a fast-growing population. Thirty years of investigation and a renewed comprehensive interpretation of research data on soil fertility show that a sustainable agriculture growth could be a practical possibility in a savannah region.
Book Synopsis Gestion Durable Des Terres Dans Les Régions Semi-arides Et Subhumides D'Afrique by : F. Ganry
Download or read book Gestion Durable Des Terres Dans Les Régions Semi-arides Et Subhumides D'Afrique written by F. Ganry and published by . This book was released on 1995 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: About thirty papers review and synthesize the biophysical, economic and social information on sustainable land use in the various parts of Africa. Four discussion groups make policy recommendations and determine the research priorities for sustainable land management systems
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 Humic Substances in Terrestrial Ecosystems by : A. Piccolo
Download or read book Humic Substances in Terrestrial Ecosystems written by A. Piccolo and published by Elsevier. This book was released on 1996-06-07 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the increasing importance of humic substances in the different scientific fields related to terrestrial ecology, soil quality conservation, and environmental chemistry. It shows that modern humic substances research is not only directed to unravel their yet ill-defined chemical structure but is successfully exploring the interconnected chemical, biological, and physical processes that maintain the ecological equilibrium of soil and ensure a sustainable agricultural production. The book will primarily be of interest to soil scientists and to ecological and environmental scientists. People in the fields of forest science, agronomy, analytical and environmental chemistry, water science, environmental engineering, and coal science will also find this publication worthy of their attention.
Author :Canada. Department of Fisheries and Oceans Publisher :Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir ISBN 13 : Total Pages :376 pages Book Rating :4.:/5 (31 download)
Book Synopsis Le Golfe Du Saint-Laurent--petit Océan Ou Grand Estuaire? by : Canada. Department of Fisheries and Oceans
Download or read book Le Golfe Du Saint-Laurent--petit Océan Ou Grand Estuaire? written by Canada. Department of Fisheries and Oceans and published by Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir. This book was released on 1991 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a workshop, the scientific reviews and the contributed papers presented at the symposium. The document presents a brief historical summary of marine research in the Gulf; reports the discussions, conclusions and recommendations of the different working groups on oceanography (physics, biology, chemistry and sedimentology) and on the fishery (fish and invertebrates); then presents the discussions of each multidisciplinary working group, centered around how the St. Lawrence system may be used as a natural laboratory which will contribute to the solution of major long-term problems of conservation of natural resources and of the quality of the environment.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251031995 Total Pages :202 pages Book Rating :4.0/5 (319 download)
Book Synopsis Technical Handbook on Symbiotic Nitrogen Fixation by : Food and Agriculture Organization of the United Nations
Download or read book Technical Handbook on Symbiotic Nitrogen Fixation written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1993 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: General information on the symbiotic nitrogen fixation. Isolation, identification and counting of rhizobia. Production of an inoculant and inoculation of legumes. Experiments.
Book Synopsis Agroforestry - The Future of Global Land Use by : P.K. Ramachandran Nair
Download or read book Agroforestry - The Future of Global Land Use written by P.K. Ramachandran Nair and published by Springer Science & Business Media. This book was released on 2012-08-22 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains a solid body of the current state of knowledge on the various themes and activities in agroforestry worldwide. It is organized into three sections: the Introduction section consists of the summaries of six keynote speeches at the 2nd World Congress of Agroforestry held in Nairobi, Kenya, in 2009; that is followed by two sections of peer-reviewed thematic chapters grouped as “Global Perspectives” (seven chapters) and “Regional Perspectives” (eleven chapters), authored by professional leaders in their respective agroforestry-related fields worldwide. A total of 130 professionals from institutions in 33 countries in both developing and the industrialized temperate regions of the world contributed to the book as chapter authors and/or reviewers. Thus, the book presents a comprehensive and authoritative account of the global picture of agroforestry today.
Book Synopsis Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana by : Samuel Adjei-Nsiah
Download or read book Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana written by Samuel Adjei-Nsiah and published by . This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, there is still considerable scope for further development of these self-organised innovations.
