Download or read book The Economic Assessment of Soil Nutrient Depletion written by Pay Drechsel and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Soil Nutrient Balance written by Rabindra N. Roy and published by Food & Agriculture Org.. This book was released on 2003 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrient-balance assessments are valuable tools for delineating the consequences of farming on soil fertility. Various approaches and methods for different situations have been used in the past. This bulletin presents a state-of-the-art review of nutrient balance studies. It brings out the evolution of the approaches and methods, provides for comparisons among them, features the improvements made, and highlights remaining issues. This analysis will be useful in further development of the assessment methodologies as reliable tools for devising time-scale soil fertility management interventions.
Download or read book The Price of Soil Erosion written by J. de Graaff and published by . This book was released on 1996 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Degradation written by Sara J. Scherr and published by Intl Food Policy Res Inst. This book was released on 1999 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluating the impact of soil degradation o food security. Past and present effects of soil degradation. Future effects of soil degradation and threats to developing-country food security. Policy and research priorities.
Download or read book Valuing nutrients in soil and water Concepts and techniques with examples from IWMI studies in the developing world written by Drechsel, Pay, Giordano, Mark, Gyiele, Lucy and published by . This book was released on 2004 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the importance of nutrient-water interactions, they are often ignored in analysis. After discussing the interrelationships between soil nutrients and water and reviewing methods for determining nutrient balances, this report describes an array of available methods for soil nutrient valuation and provides a discussion of four nutrient valuation studies, which together cover a range of scales, perspectives, and geographic contexts. It also includes case studies from Ghana, Mexico, sub-Saharan Africa, and an examination of possible approaches to valuing soil organic matter and its various functions--an often ignored area in literature.
Download or read book Methods for Assessment of Soil Degradation written by Rattan Lal and published by CRC Press. This book was released on 2020-11-26 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil degradation has serious global impacts on agronomic, economic, and sociopolitical conditions, however, statistics regarding the degree of these impacts has been largely unreliable. This book aims to standardize the methodology for obtaining reliable and objective data on soil degradation. It will also identify and develop criteria for assessing the severity of soil degradation, providing a realistic scenario of the problem.
Download or read book The Price of Soil Erosion written by Jan de Graaf and published by . This book was released on 1996 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Economics of Soil Conservation in Developing Countries written by Olaf C. A. Erenstein and published by . This book was released on 1999 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author can be contacted at:[email protected].
Download or read book Economics of Land Degradation and Improvement A Global Assessment for Sustainable Development written by Ephraim Nkonya and published by Springer. This book was released on 2015-11-11 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume deals with land degradation, which is occurring in almost all terrestrial biomes and agro-ecologies, in both low and high income countries and is stretching to about 30% of the total global land area. About three billion people reside in these degraded lands. However, the impact of land degradation is especially severe on livelihoods of the poor who heavily depend on natural resources. The annual global cost of land degradation due to land use and cover change (LUCC) and lower cropland and rangeland productivity is estimated to be about 300 billion USD. Sub-Saharan Africa (SSA) accounts for the largest share (22%) of the total global cost of land degradation. Only about 38% of the cost of land degradation due to LUCC - which accounts for 78% of the US$300 billion loss – is borne by land users and the remaining share (62%) is borne by consumers of ecosystem services off the farm. The results in this volume indicate that reversing land degradation trends makes both economic sense, and has multiple social and environmental benefits. On average, one US dollar investment into restoration of degraded land returns five US dollars. The findings of the country case studies call for increased investments into the rehabilitation and restoration of degraded lands, including through such institutional and policy measures as strengthening community participation for sustainable land management, enhancing government effectiveness and rule of law, improving access to markets and rural services, and securing land tenure. The assessment in this volume has been conducted at a time when there is an elevated interest in private land investments and when global efforts to achieve sustainable development objectives have intensified. In this regard, the results of this volume can contribute significantly to the ongoing policy debate and efforts to design strategies for achieving sustainable development goals and related efforts to address land degradation and halt biodiversity loss.
Download or read book Land And Soil Management written by Alfredo Sfeir-Younis and published by CRC Press. This book was released on 2019-04-11 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil erosion has become a problem of crisis proportions in developing countries around the globe, and better approaches to land management are desperately needed. This book provides analytical frameworks to guide the creation and appraisal of soil erosion control programs. The authors discuss a broad range of important issues involved in designing and implementing more effective soil conservation programs. The book begins with a discussion of the physical and economic dimensions of soil erosion and an estimation of the extent of the problem. It then explains how to improve the evaluation of soil conservation programs by integrating scientific knowledge with economic methods and procedures. A series of practical illustrations graphically demonstrates the application of the concepts derived from the theory. The most important organizational, institutional, technical, and macroeconomic aspects of soil and land management appraisal are outlined, and the major elements of project or program design are also pinpointed and illustrated. Finally, the book suggests areas most in need of future research.
Download or read book Advances in Agronomy written by and published by Elsevier. This book was released on 2011-07-29 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Agronomy continues to be recognized as a leading reference and a first-rate source for the latest research in agronomy. As always, the subjects covered are varied and exemplary of the myraid of subject matter dealt with by this long-running serial. Volume 89 contains six comprehensive and timely reviews. Chapter 1 presents a thorough coverage of wet chemistry and state-of-the art molecular scale techniques, such as x-ray absorption fine structure (XAFS) and nuclear magnetic resonance (NMR) spectroscopies, that can be used to characterize phosphorus in organic wastes. Chapter 2 discusses the Wheat Genetics Resource Center that has served the scientific community for 25 years. These resources have been useful to scientists in 45 countries and 39 of the states in the U.S. Chapter 3 covers various aspects of the biology and management of Stevia, a sweet herb of Paraguay. Chapter 4 is a timely review of aspects of soil fertility decline in the tropics as assessed by soil chemical measurements. Chapter 5 covers nematode interactions and assessment of models for their control on crop plants. Chapter 6 presents data and algorithms on ammonia emission form animal operations, a current area of much interest in the area of environmental quality. - Over 40 figures and 32 tables - Presents a review of the present and future status of soil science - Offers an analysis of biodiversity in agronomy
Download or read book Science Magazine s State of the Planet 2006 2007 written by Donald Kennedy and published by Island Press. This book was released on 2006-06-15 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: How often in today's environmental debates have you read that "the science is in dispute"-even when there is overwhelming consensus among scientists? Too often, the voice of science is diminished or diluted for the sake of politics, and the public is misled. Now, the most authoritative voice in U.S. science, Science magazine, brings you current scientific knowledge on today's most pressing environmental challenges, from population growth to climate change to biodiversity loss. Science Magazine's State of the Planet 2006-2007 is a unique contribution that brings together leading environmental scientists and researchers to give readers a comprehensive yet accessible overview of current issues. Included are explanatory essays from Science magazine editor-in-chief Donald Kennedy that tie together the issues and explore the relationships among them. Each of the book's 18 chapters is written by the world's leading experts, such as: Joel Cohen on population Peter Gleick on water Daniel Pauly on fisheries Thomas Karl on climate change science Paul Portney on energy and development Elinor Ostrom and Thomas Dietz on commons management Interspersed throughout are Science news pieces that highlight particular issues and cases relevant to the main scientific findings. An added feature is the inclusion of definitions of key terms and concepts that help students and nonspecialists understand the issues. Published biennially, State of the Planet is a clear, accessible guide for readers of all levels-from students to professionals.
Download or read book Natural Resources Management in Agriculture written by Bekele Shiferaw and published by CABI. This book was released on 2005 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I: Introduction; Part II: Valuation of ecosystem services and biophysical indicators of NRM impacts; Part III: Methodological advances for a comprehensive impact assessment; Part IV: NRM impact assessment in practice.
Download or read book An Analytical Treatment of the Economics of Soil Depletion written by Sergio Ardila Vasquez and published by . This book was released on 1991 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three basic model of soil conservation decisions are developed with a complete analysis of their dynamic properties. The first model assumes that soil is farmers' main asset and that they recognize its influence on the production function and the effects of agricultura production on the soil. The model indicates that the steady state shadow price of the soil characteristic will increase whenever output price increases or the discount rate decreases,while a higher discount rate or soil renovation rate will lower it. The effects of these parameters on the steady state soil stock will be opposite to those on its shadow price, but an increase in the discount rate would lower both. The effects of input price changes can be signed with few additional assumptions. The monotonicity property of the solution is derived and commented upon. An expanded version of the above model is analized in chapter four, to study the case when farmers also accumulate capital and financial assets. Contrary to what would be expected, most of the steady state comparative statistics results can be signed when capital and soil stock are assumed to be complements. In this model there possibility of having increases in steady state soil stock with an increase in the interest rate. The monotonicity property of the optimal solution is maintained given the stability properties of the solution. The final chapter presents two related dynamic stochastic models of farmer's decisions to study the effects of wealth and revenue variability. The two-date.
Download or read book Integrated Plant Nutrient Management in Sub Saharan Africa written by and published by CABI. This book was released on 2002 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil degradation and nutrient depletion have become serious threats to agricultural productivity in Africa. Soils cannot supply the quantities of nutrients required and yield levels decline rapidly once cropping commences. This book addresses these issues and includes papers from an international symposium held at Cotonou, Benin, October 9-12, 2000, organized by the International Institute of Tropical Agriculture, Ibadan, Nigeria and the Department of Land Management of the Katholieke Universiteit Leuven, Belgium. In five main parts it marks the end of a first phase of collaborative research on "Balanced Nutrient Management Systems for the Moist Savanna and Humid Forest Zones of Africa" and concludes with recommendations, providing essential reading for crop and soil scientists.
Download or read book New Frontiers in Environmental and Social Labeling written by Ulrike Grote and published by Springer Science & Business Media. This book was released on 2007-02-17 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides an in depth look at labeling and its relation to the governance of global trade. The book aims at bridging the research gaps related to the link between consumers’ perception of a label with their willingness to pay, the impact and the limitations of labeling in the event of food safety hazards, and the trade and development dimensions of labeling. As such, this volume opens a new frontier on issues related to the economics of labeling.
Download or read book The Price of Soil Erosion written by J. de Graaff and published by . This book was released on 1996 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
