Properties and Management of Soils in the Tropics PDF Download
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Author: Pedro A. Sanchez
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685
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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.
Author: Pedro A. Sanchez
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685
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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.
Author: R. Lal
Publisher: United Nations University Press
ISBN: 9789280808766
Category : Nature
Languages : en
Pages : 170
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Book Description
Author: Feras Ziadat
Publisher: Routledge
ISBN: 1317624130
Category : Technology & Engineering
Languages : en
Pages : 281
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Book Description
The research presented in this book demonstrates how an integrated ‘systems’ approach to farming in the watershed context increases the effectiveness of a production system and improves people’s livelihoods. It takes an integrated approach, using one watershed in Ethiopia as a ‘laboratory’ or model case study to focus on the interaction and interdependence between land, water, crops, soil, water harvesting, supplemental irrigation, forestry, socio-economic aspects, livestock and farm tools. A range of linked studies was conducted with active participation of the farming community and other relevant stakeholders, such as the local offices of agriculture and extension services. The starting point for the work was the premise that previous efforts to solve farming system constraints using a piecemeal approach or discipline-specific focus have not been successful. Thus, addressing agricultural and environmental constraints through a holistic approach enables the generation of comprehensive technologies to sustainably improve the natural resource base and livelihoods of communities. The authors discuss trade-offs and resource allocation, demonstrating how the environment can be protected while also improving productivity. A unique feature is the methodology developed for the selection of suitable fields and farmers to implement new approaches or improved technologies, to achieve production increases while reducing degradation of sensitive agro-ecosystems. It is also shown how the watershed scale is a valuable basis for assessing the protection of fragile lands.
Author: Eric J. Roose
Publisher: CRC Press
ISBN: 113546054X
Category : Nature
Languages : en
Pages : 499
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Book Description
The most complete, nonpartisan source of information on this hot agronomic topic available today, this book brings together a diverse group of papers and data to resolve the debate between sedimentologists and soil scientists and agronomists over whether the effects of soil erosion on carbon and atmospheric CO2 is beneficial or destructive. Divided into four sections, it offers data on how soil erosion affects soil, water, and air quality. Topics include mineralization rate, inundation, sediment deposition, and global warming potential, as well as carbon dioxide, methane, and nitrous oxide emissions, and the implications of soil erosion on the global carbon cycle and carbon budget.
Author: Walter H. Wischmeier
Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 70
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Book Description
The Universal Soil Loss Equation (USLE) enables planners to predict the average rate of soil erosion for each feasible alternative combination of crop system and management practices in association with a specified soil type, rainfall pattern, and topography. When these predicted losses are compared with given soil loss tolerances, they provide specific guidelines for effecting erosion control within specified limits. The equation groups the numerous interrelated physical and management parameters that influence erosion rate under six major factors whose site-specific values can be expressed numerically. A half century of erosion research in many States has supplied information from which at least approximate values of the USLE factors can be obtained for specified farm fields or other small erosion prone areas throughout the United States. Tables and charts presented in this handbook make this information readily available for field use. Significant limitations in the available data are identified.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251314268
Category : Technology & Engineering
Languages : en
Pages : 104
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Book Description
Despite almost a century of research and extension efforts, soil erosion by water, wind and tillage continues to be the greatest threat to soil health and soil ecosystem services in many regions of the world. Our understanding of the physical processes of erosion and the controls on those processes has been firmly established. Nevertheless, some elements remain controversial. It is often these controversial questions that hamper efforts to implement sound erosion control measures in many areas of the world. This book, released in the framework of the Global Symposium on Soil Erosion (15-17 May 2019) reviews the state-of-the-art information related to all topics related to soil erosion.
Author: Joachim von Braun
Publisher: Springer
ISBN: 9400770618
Category : Science
Languages : en
Pages : 388
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Book Description
This book takes a new approach on understanding causes of extreme poverty and promising actions to address it. Its focus is on marginality being a root cause of poverty and deprivation. “Marginality” is the position of people on the edge, preventing their access to resources, freedom of choices, and the development of capabilities. The book is research based with original empirical analyses at local, national, and local scales; book contributors are leaders in their fields and have backgrounds in different disciplines. An important message of the book is that economic and ecological approaches and institutional innovations need to be integrated to overcome marginality. The book will be a valuable source for development scholars and students, actors that design public policies, and for social innovators in the private sector and non-governmental organizations.
Author: R. Lal
Publisher: McGraw-Hill Companies
ISBN:
Category : Gardening
Languages : en
Pages : 602
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Book Description
Filling a need for all soil scientists, this comprehensive, volume on the problem of soil erosion, covers the principles and processes of wind and water erosion, with emphasis on the tropics. Because soil erosion is the single largest problem in maintaining food production worldwide, management practices advocated in this volume will be of significant environmental impact. TABLE OF
Author: R. Lal
Publisher: Food & Agriculture Org.
ISBN: 9789251037768
Category : Technology & Engineering
Languages : en
Pages : 228
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Book Description
The objectives of this Bulletin are to collate up-to-date information on soil tillage requirements for soils in the tropics; to assess the impacts of different ways of tillage on soil, environment and crop productivity; and to outline criteria for developing environment-friendly and economically viable tillage techniques for sustainable use of soil and water resources
Author: A.J. Conacher
Publisher: Springer Science & Business Media
ISBN: 9401720339
Category : Science
Languages : en
Pages : 386
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Book Description
This book contains selected contributions from the Sixth Meeting of the International Geographical Union's Commission on Land Degradation and Desertification, held in Perth, Australia, in September 1999. Collectively, these contributions explicitly seek to understand not only the mechanisms responsible for the problem of land degradation but their social and economic implications, the means of overcoming the problems, and the policy instruments whereby remedial measures may be implemented. This breadth of approach is both distinctive and essential if the problems are to be tackled effectively. The authorship comprises of specialists (mostly geographers) from universities, research organizations, and government agencies, who provide a truly international perspective with contributions from Iceland to Australia and from the USA to Japan. Audience: The book presents current research findings which will be of particular benefit to professionals and practitioners, as well as researchers and tertiary-level educationalists who are involved with land degradation.
