Your Search Results(showing 333)

    • Earth sciencesx
    • Trusted Partner
      Hydrology & the hydrosphere
      July 2016

      Sustainable Water Management in Smallholder Farming

      Theory and Practice

      by Sara Finley

      Water is critical to all human activities, but access to this crucial resource is increasingly limited by competition and the effects of climate change. In agriculture, water management is key to ensuring good and sustained crop yields, maintaining soil health, and safeguarding the long-term viability of the land. Water management is especially challenging on smallholder farms in resource-poor areas, which tend to be primarily rainfed and thus highly dependent on unreliable rainfall patterns. Sustainable practices can help farmers promote the development of soils, plants and field surfaces to allow maximum retention of water between rains, and encourage the efficient use of each drop of water applied as irrigation. Using simplified concepts and easy-to-understand language, this book: - outlines the theoretical underpinnings of sustainable water management in agriculture, -introduces a range of beneficial practices, including the enhancement of soil water retention, water loss reduction, rainwater harvesting, conservation agriculture, and small-scale irrigation -provides schematic diagrams, and resources for further reading to help readers put theory into practice Especially useful for farmers' groups, agricultural extension workers, NGOs, students and researchers working with farmers in dryland areas, this comprehensive yet concise book is a practical and accessible resource for anyone interested in sustainable water management.

    • Trusted Partner
      Hydrology & the hydrosphere
      July 2016

      Sustainable Water Management in Smallholder Farming

      Theory and Practice

      by Sara Finley

      Water is critical to all human activities, but access to this crucial resource is increasingly limited by competition and the effects of climate change. In agriculture, water management is key to ensuring good and sustained crop yields, maintaining soil health, and safeguarding the long-term viability of the land. Water management is especially challenging on smallholder farms in resource-poor areas, which tend to be primarily rainfed and thus highly dependent on unreliable rainfall patterns. Sustainable practices can help farmers promote the development of soils, plants and field surfaces to allow maximum retention of water between rains, and encourage the efficient use of each drop of water applied as irrigation. Using simplified concepts and easy-to-understand language, this book: - outlines the theoretical underpinnings of sustainable water management in agriculture, -introduces a range of beneficial practices, including the enhancement of soil water retention, water loss reduction, rainwater harvesting, conservation agriculture, and small-scale irrigation -provides schematic diagrams, and resources for further reading to help readers put theory into practice Especially useful for farmers' groups, agricultural extension workers, NGOs, students and researchers working with farmers in dryland areas, this comprehensive yet concise book is a practical and accessible resource for anyone interested in sustainable water management.

    • Trusted Partner
      Soil science, sedimentology
      October 2015

      Visual Soil Evaluation

      Realizing Potential Crop Production with Minimum Environmental Impact

      by Edited by Bruce C. Ball, Lars J. Munkholm.

      Visual Soil Evaluation (VSE) provides land users and environmental authorities with the tools to assess soil quality for crop performance. This book describes the assessment of the various structural conditions of soil, especially after quality degradation such as compaction, erosion or organic matter loss. Covering a broad range of land types from abandoned peats to prime arable land, this useful handbook assesses yield potential across a range of scales. It also appraises the use of VSE in determining the potential of different land types for carbon storage, greenhouse gas emissions and nutrient leaching, and for diagnosing and rectifying erosion and compaction in soils.

    • Trusted Partner
      Soil science, sedimentology
      October 2015

      Visual Soil Evaluation

      Realizing Potential Crop Production with Minimum Environmental Impact

      by Edited by Bruce C. Ball, Lars J. Munkholm.

      Visual Soil Evaluation (VSE) provides land users and environmental authorities with the tools to assess soil quality for crop performance. This book describes the assessment of the various structural conditions of soil, especially after quality degradation such as compaction, erosion or organic matter loss. Covering a broad range of land types from abandoned peats to prime arable land, this useful handbook assesses yield potential across a range of scales. It also appraises the use of VSE in determining the potential of different land types for carbon storage, greenhouse gas emissions and nutrient leaching, and for diagnosing and rectifying erosion and compaction in soils.

    • Trusted Partner
      Limnology (freshwater)
      March 2006

      Economics of Livestock Disease Insurance

      Concepts, Issues and International Case Studies

      by Edited by Stephen R Koontz, Dana L Hoag, Dawn D Thilmany, John W Green, Jennifer L Grannis

      In recent years the livestock sector has been hit by a number of high-profile diseases, such as BSE,Foot and Mouth Disease and Avian Influenza. These have had a devastating economic impact onlivestock producers and the broader livestock industry. One key response has been a growing interestin livestock disease insurance. However there is a need for greater understanding of private incentives,market impacts, and public policy perspectives on regional, national and international levels, if livestockinsurance products and complementary risk management programmes are to be developed.This book provides a balanced and broad-ranging overview of the economics of livestock diseaseinsurance. It covers both general issues and specific case studies drawn from the USA, Canada, Europeand Australia or focussing on specific issues. The book is unique in addressing this subject and willinterest readers in agricultural business and economics, veterinary science and the livestock sector.

    • Trusted Partner
      Limnology (freshwater)
      March 2006

      Freshwater Nematodes

      Ecology and Taxonomy

      by Edited by Eyualem-Abebe, Istvan Andrassy, Walter Traunspurger

      Nematodes are the most numerous metazoans in aquatic sediments. The majority of conducted studies on these aquatic forms focus mainly on those in marine and estuarine habitats. Nematodes from inland water bodies have been relatively forgotten or ignored. Recognizing this serious drawback and its impact on research on nematodes, this book brings together the available information on freshwater nematodes. It addresses the taxonomy of this extremely diverse phylum and provides analysis of its ecology in freshwater habitats from nematologists from 12 countries worldwide. Descriptions of each taxon at genus-level and above are provided with an augmenting pictorial guide to the currently valid genera. Also, a complete, up-to-date and valid species-list is given for every genus with an emphasis on those reported from freshwater bodies.

    • Trusted Partner
      Limnology (freshwater)
      December 2005

      Land Use Changes in Tropical Watersheds

      Evidence, Causes and Remedies

      by Edited by Ian Coxhead, Gerald E Shively

      This book studies land use change in tropical landscapes, with particular emphasis on the economic processes that influence rates of land degradation and forest clearing. Multidisciplinary contributions draw lessons from a rich, decade-long collection of economic, social and environmental data on the Manupali upland watershed in the southern Philippines. Through this detailed case study the book documents forces leading to land use changes, in particular the potential impacts of institutional evolution and policy reforms, and highlights interrelationships between biological, economic, and social phenomena.

    • Trusted Partner
      Limnology (freshwater)
      April 2005

      Irrigation and Drainage Performance Assessment

      Practical Guidelines

      by Marinus G Bos, Martin Burton, David J Molden

      Effective irrigation and drainage systems are essential if growing demands for water resources are to be met. For the use of water for irrigation to be improved we must understand current levels of performance. This book draws together the growing body of knowledge on irrigation and drainage performance assessment that has been gained over the last twenty years. It provides guidelines for practitioners to enable them to design and carry out performance assessment and implement performance-based management. Developed by a working group of the International Commission on Irrigation and Drainage (ICID) it provides a generic framework for performance assessment with guidance on the theory and practice of how to audit and assess the performance of irrigation and drainage schemes.

    • Trusted Partner
      Limnology (freshwater)
      February 2005

      Irrigation and River Basin Management

      Options for Governance and Institutions

      by Edited by Mark Svendsen

      With increasing water scarcity, pressure to re-allocate water from agriculture to other uses mounts, along with a need to put in place institutional arrangements to promote 'higher value' uses of water. Many developing countries are now experimenting with establishing new institutional arrangements for managing water at the river basin level.This book, based on research by IWMI and others, reviews basin management in six developed and developing countries. It describes and applies a functional theory of river basin management, based on the idea that there is a minimum set of functions required to manage basins effectively and a set of basic conditions that enable effective management institutions to emerge. The book examines the experiences of both developed and developing countries in order to see what lessons can be learned and to identify what constitutes the core of a 'theory of river basin management'. It concludes that although it is difficult for developing countries to adopt approaches and institutional designs directly from developed countries, basic principles and lessons are transferable.

    • Trusted Partner
      Limnology (freshwater)
      December 2004

      Organic Phosphorus in the Environment

      by Edited by Benjamin L Turner, Emmanuel Frossard, Darren S Baldwin

      Organic phosphorus is involved in almost every biological process. Organic forms of phosphorus often dominate in soils and aquatic systems and many organisms possess complex mechanisms enabling them to access phosphorus from organic compounds. However organic phosphorus remains the most poorly understood aspect of the global phosphorus cycle. This book brings together the latest research and opinion on the biogeochemistry of organic phosphorus from a wide range of disciplines and focuses specifically on the characterisation and transformations of organic phosphorus in terrestrial and aquatic systems. It examines analytical procedures for the chemical characterization of organic phosphorus in environmental samples, processes regulating organic phosphorus in the environment, and integration of the process at the ecosystem level. Ecological, chemical, microbiological and analytical aspects are explored. Written by a team of leading experts, the book will provide an invaluable reference for all those interested in organic phosphorus.

    • Trusted Partner
      Limnology (freshwater)
      May 2004

      Below-ground Interactions in Tropical Agroecosystems

      Concepts and Models with Multiple Plant Components

      by Edited by Meine van Noordwijk, Georg Cadisch, Chin K Ong

      This book provides a synthesis of plant-soil-plant interactions in agroforestry, intercropping and grass-legume interactions. It focuses on the process level, which is relevant to many types of multi-species agroecosystem. It also links basic research to practical applications in a wide range of systems with or without trees, and considers effects of global change on below-ground interactions. The contents include soil biodiversity and food webs, phosphorus dynamics and mobilization by plants, and crop and tree root-system dynamics. The book will be of significant interest to researchers in plant, crop and soil sciences as well as agroforestry.

    • Trusted Partner
      Soil science, sedimentology
      December 2003

      Managing Soil Quality

      Challenges in Modern Agriculture

      by Edited by Per Schjønning, Bent T Christensen, Susanne Elmholt

      In-depth treatments of the soil quality concept, its history, and its applicability in research and in developed and developing societiesAll 18 chapters are written by well-established experts from Europe, North America and AustraliaSoil quality is a concept that allows soil functions to be related to specific purposes. Managing soil quality takes a management oriented approach by identifying key issues in soil quality and management options to enhance the sustainability of modern agriculture. Topics covered include major plant nutrients (N, P, K), soil acidity, soil organic matter, soil biodiversity, soil compaction, erosion, pesticides and urban waste.

    • Trusted Partner
      Limnology (freshwater)
      November 2003

      Water Dynamics in Plant Production

      by Wilfried Ehlers, Michael Goss

      In many regions of the world, water is scarce. This causes a problem in plant production, as plants rely on water stored in the soil to meet their needs; thus it is the principal factor limiting crop production.Water Dynamics in Plant Production describes the basic scientific principles of water transport in the soil-plant-atmosphere continuum, explains the linkage between transpirational water use and dry matter production and presents various agronomic strategies to adapt to climate water shortage.

    • Trusted Partner
      Limnology (freshwater)
      September 2003

      Soil Fertility Decline in the Tropics

      With Case Studies on Plantations

      by Alfred E Hartemink

      Wide coverage of soils and perennial cropping systems in the tropicsSynthesis of decades of researchChallenges assumptions on the benefits of plantations for soil fertilityIt is generally assumed that soil fertility decline is widespread in the tropics and that this is largely associated with annual cropping and subsistence farming. In contrast, perennial plant cover (as in plantation agriculture) provides better protection for the soil.This book reviews these concepts, focusing on soil chemical changes under different land-use systems in the tropics. These include perennial crops, annual crops and forest plantations. Two case studies, on sisal plantations in Tanzania and sugar cane in Papua New Guinea, are presented for detailed analysis. The author demonstrates that soil fertility decline is also a problem on plantations.

    • Trusted Partner
      Limnology (freshwater)
      October 2002

      Agriculture, Hydrology and Water Quality

      by Edited by Philip Haygarth, Steven C Jarvis

      This book is a collection of state-of-the-art reviews on the global problems of diffuse water pollution from agriculture, which affects the water quality of rivers, lakes, reservoirs and the oceans. It includes chapters on eutrophication, phosphorus, nitrogen, manure, heavy metals, carbon/persistent organic pollutants and soil/siltation problems. The book is broken down into three parts and reflects the opinions of the world's experts in these subjects.

    • Trusted Partner
      Limnology (freshwater)
      July 2002

      Crop-Soil Simulation Models

      Applications in Developing Countries

      by Edited by Robin B Matthews, William Stephens

      The use of crop-soil modelling has so far been mainly confined to the research community. Practical applications have occurred in the areas of decision tools for irrigation studies and pest management. However, there is potential to increase its applied use.This book reviews progress in crop-soil simulation modelling and assesses its application to agriculture in developing countries. It is based on work sponsored by the Natural Resources Systems Programme of the UK Department for International Development.

    • Trusted Partner
      Limnology (freshwater)
      November 2001

      Waste Composting for Urban and Peri-Urban Agriculture

      Closing the Rural-Urban Nutrient Cycle in Sub-Saharan Africa

      by Edited by Pay Drechsel, Dagmar Kunze

      Rapid urbanization has created a major challenge with regard to waste management and environmental protection. However, the problem can be ameliorated by turning organic waste into compost for use as an agricultural fertilizer in peri-urban areas. This is especially significant in less developed countries, where food security is also a key issue. This book addresses these subjects and is based on papers presented at a workshop held in Ghana by the International Board for Soil Research and Management (IBSRAM, now part of the International Water Management Institute) and FAO. Special reference is given to Sub-Saharan Africa, with acknowledgement to experiences from other parts of the world. Contributing authors are from several European, as well as African, countries.

    • Trusted Partner
      Limnology (freshwater)
      September 2001

      Crop Science

      Progress and Prospects

      by Edited by Josef Nösberger, Hartwig H Geiger, Paul C Struik

      This book includes keynote invited papers from the Third International Crop Science Congress held in Hamburg, Germany in August 2000. All papers have been prepared and revised within strict editorial guidelines to ensure that the work is a balanced review text that provides an overview of the major issues confronting crop science today and in the future. It therefore represents a suitable advanced textbook for students as well as offering research workers concise overviews of topics adjacent to their areas of research. Contributors include leading world authorities from Europe, North and South America, Africa, Asia and Australia.

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