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Author: Marinus G. Bos
Publisher: Springer Science & Business Media
ISBN: 1402089481
Category : Technology & Engineering
Languages : en
Pages : 186
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Book Description
Irrigated agriculture produces about 40% of all food and fibre on about 16% of all cropped land. As such, irrigated agriculture is a productive user of resources; both in terms of yield per cropped area and in yield per volume of water consumed. Many irrigation projects, however, use (divert or withdraw) much more water than consumed by the crop. The non-consumed fraction of the water may cause a variety of undesirable effects ranging from water-logging and salinity within the irrigated area to downstram water pollution. This book discusses all components of the water balance of an irrigated area; evapotranspiration (Ch.2), effective precipitation (Ch.3) and capillary rise from the groundwater table (Ch.4). Chapter 5 then combines all components into a water management strategy that balances actual evapotranspiration (and thus crop yield) with the groundwater balance of the irrigated area (for a substainable environment). Chapter 6 presents CRIWAR 3.0, a simulation program that combines all water balance components into a single simulation procedure. The chapter describes the use of the CRIWAR software for developing water requirement tables and other useful information based on the selected water management strategy. This version greatly expands upon the capabilities of previously published programs.
Author: Marinus G. Bos
Publisher: Springer Science & Business Media
ISBN: 1402089481
Category : Technology & Engineering
Languages : en
Pages : 186
Get Book Here
Book Description
Irrigated agriculture produces about 40% of all food and fibre on about 16% of all cropped land. As such, irrigated agriculture is a productive user of resources; both in terms of yield per cropped area and in yield per volume of water consumed. Many irrigation projects, however, use (divert or withdraw) much more water than consumed by the crop. The non-consumed fraction of the water may cause a variety of undesirable effects ranging from water-logging and salinity within the irrigated area to downstram water pollution. This book discusses all components of the water balance of an irrigated area; evapotranspiration (Ch.2), effective precipitation (Ch.3) and capillary rise from the groundwater table (Ch.4). Chapter 5 then combines all components into a water management strategy that balances actual evapotranspiration (and thus crop yield) with the groundwater balance of the irrigated area (for a substainable environment). Chapter 6 presents CRIWAR 3.0, a simulation program that combines all water balance components into a single simulation procedure. The chapter describes the use of the CRIWAR software for developing water requirement tables and other useful information based on the selected water management strategy. This version greatly expands upon the capabilities of previously published programs.
Author: L.S. Pereira
Publisher: Springer Science & Business Media
ISBN: 9401587000
Category : Technology & Engineering
Languages : en
Pages : 607
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Book Description
Irrigated agriculture and the use of water resources in agriculture face the challenges of sustainable development. Research has advanced our knowledge of water use by crops, soil-water-solutes interactions, and the engineering and managerial tools needed to mobilize, convey, distribute, control and apply water for agricultural production. However, the achievements booked in user practice have revealed the need for new developments in the areas of resource conservation, control of environmental and health impacts, modernisation of technologies and management, economic viability and the social acceptance of changes. The contributions to Sustainability of Irrigated Agriculture cover most of the relevant disciplines. Besides its multidisciplinarity, the different origins, experience, backgrounds and practices of the authors provide a wide, in-depth analysis of the various aspects of water resource utilization in agriculture. The papers review scientific, technical and managerial aspects, highlighting the main problems, issues and future developments. The book covers the different aspects of sustainability, including environmental, technical, economic, institutional and social ones. Advances in irrigation science and engineering are dealt with, both on- and off-farm. Special attention is paid to the different components of water quality management, to the transfer of technology, and to capacity building.
Author: James S. Shortle
Publisher: Edward Elgar Publishing
ISBN: 9781840645033
Category : Irrigation
Languages : en
Pages : 0
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Book Description
Shortle (agricultural and environmental economics, Pennsylvania State U.) and Griffin (natural resource economics, Texas AandM U.) gather together 18 articles on the effects of agriculture on water resources (and vice versa) that have been previously published in academic journals between 1980 and the present. The articles are organized into sections that address pollution control instruments for irrigated agriculture, salinity and water allocation, and water reallocation and the environment. The major concern throughout the volume is the economic effects of various water allocation plans, as well as economic instruments capable of providing pollution control and proper water allocation within current market systems. c. Book News Inc.
Author: Smakhtin, V.
Publisher: IWMI
ISBN: 9290904798
Category : Irrigation farming
Languages : en
Pages : 28
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Book Description
The intention of this paper is to develop a framework for a new IWMI research program on environmental water requirements of aquatic ecosystems and environmental aspects associated with irrigated agriculture in river basins and wetlands. The program will be implemented primarily in the context of developing countries, but the paper also examines research questions, which are of general importance for eco-hydrology and environmental water resources management. At the same time, it does not purport to be a comprehensive coverage of the environmental water research field but is designed primarily for attention of specialists dealing with wetlands, water resources management and sustainable agricultural development within sister CGIAR centers and other similar international agencies. It is envisaged that some ideas for future research presented in the paper will also be of interest to hydrologists and ecologists engaged in developing the concepts of environmental water requirements of aquatic ecosystems. The introduction of the paper sets up the purpose of the document. This is followed by a description of a framework, which links different levels of water resources use and conservation of natural aquatic systems with various management interventions. The main focus areas of the proposed research are then discussed. They include estimating water requirements of aquatic ecosystems, evaluating scenarios of development and impacts of irrigated agriculture on rivers and wetlands, allocating water with the consideration of environmental thresholds, etc. The paper also discusses possible research activities, which are associated with these focus areas and presents examples of specific research projects that could be pursued internally or in partnership with other national and international institutions.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309175755
Category : Technology & Engineering
Languages : en
Pages : 213
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Book Description
Irrigated agriculture has played a critical role in the economic and social development of the United Statesâ€"but it is also at the root of increasing controversy. How can irrigation best make the transition into an era of increasing water scarcity? In A New Era for Irrigation, experts draw important conclusions about whether irrigation can continue to be the nation's most significant water user, what role the federal government should play, and what the irrigation industry must do to adapt to the conditions of the future. A New Era for Irrigation provides data, examples, and insightful commentary on issues such as: Growing competition for water resources. Developments in technology and science. The role of federal subsidies for crops and water. Uncertainties related to American Indian water rights issues. Concern about environmental problems. And more. The committee identifies broad forces of change and reports on how public and private institutions, scientists and technology experts, and individual irrigators have responded. The report includes detailed case studies from the Great Plains, the Pacific Northwest, California, and Florida, in both the agricultural and turfgrass sectors. The cultural transformation brought about by irrigation may be as profound as the transformation of the landscape. The committee examines major facets of this cultural perspective and explores its place in the future. A New Era for Irrigation explains how irrigation emerged in the nineteenth century, how it met the nation's goals in the twentieth century, and what role it might play in the twenty-first century. It will be important to growers, policymakers, regulators, environmentalists, water and soil scientists, water rights claimants, and interested individuals.
Author: Ariel Dinar
Publisher:
ISBN:
Category : Drainage
Languages : en
Pages : 64
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Book Description
Author: Iván Francisco García-Tejero
Publisher: Springer Science & Business Media
ISBN: 9400720912
Category : Technology & Engineering
Languages : en
Pages : 98
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Book Description
Irrigated agriculture, a vital component of general agriculture, supplies fruits, vegetables, and cereals consumed by humans and grains fed to animals. Consequently, agriculture is the largest user of fresh water globally, and irrigation practices in many parts of the world are biologically, economically, and socially unsustainable. Water management should balance the need for agricultural water and the need for a sustainable environment. Water-use efficiency is the prime challenge in worldwide farming practices where problems of water shortages are widespread. Currently, agriculture is undergoing significant changes in innovative irrigation, fertilizer technology, and agronomic expertise. These elements constitute a vital platform for sustainable agricultural success and for preventing environmental damage. This review presents several processes linked to environmental irrigation, balancing environmental protection with improved agricultural production.
Author: Lawrence J. MacDonnell
Publisher:
ISBN:
Category : Business & Economics
Languages : en
Pages : 430
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Book Description
From Reclamation to Sustainability tells the story of four places in the West -- the Arkansas Valley and the Grand Valley of Colorado, the Truckee-Carson basins of California and Nevada, and the Yakima Basin in Washington -- where development and use of water, primarily for irrigated agriculture, have been central to economic and social development. In these places (and many others), the reclamation vision that helped settle the West now competes with a vision of a sustainable West. All four regions tell of the essential role water has played in western agriculture and the importance of this agriculture for settlement of much of the West. They also exemplify the many difficulties of turning prairie and desert into productive croplands, and MacDonnell describes the sometimes extraordinary human commitment and effort that made this possible. Now, however, western water resources have been developed beyond their sustainable capacity in an attempt to irrigate as much land as possible, and MacDonnell illustrates the consequences of this overdevelopment, including declining rural communities, dewatered streams incapable of supporting native species, and degraded water quality. He also provides examples of efforts to repair some of the damages and of the challenges involved in such restoration. MacDonnell argues that sustainable use of the West's water resources depends on reducing the gap between diverted water and used water, restoring the functional ecological integrity of water sources, allowing uses of developed water to change, and effective collaborative public/ private processes that help reconcile competing interests in water. He concludes that the manner in which the West movestoward sustainable use of its limited water resources -- particularly as it affects irrigated agriculture -- matters at least as much as achieving sustainable use. It matters because the choices we make will have important consequences for the future West.
Author: Ariel Dinar
Publisher: Bloomsbury Publishing USA
ISBN: 0313368163
Category : Political Science
Languages : en
Pages : 264
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Book Description
This work presents models that characterize the relationships between quantity and quality of irrigation water application, and agricultural production and the environment. A comprehensive modeling approach addressing both the benefits of irrigation and the potential negative effects is introduced. Physical-biological concepts are combined with economic and engineering principles to demonstrate the usefulness of the model for analyzing various water management and policy issues. Decision makers on all levels should find the modeling approach interesting and useful in the management issues from the farm to national levels.
Author: Christopher Scott
Publisher: Cabi
ISBN: 9781845934514
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
The use of urban wastewater in agriculture is receiving renewed attention, with the increasing scarcity of fresh water resources in many arid and semi-arid regions of the world. Wastewater is a low-cost alternative to conventional irrigation water, although it may carry health and environmental risks. This book critically reviews experience worldwide of these issues. Emphasis is placed on untreated wastewater use by means of field-based case studies from Asia, Africa, the Middle East and Latin America. It brings together a range of perspectives including economic, health, agronomic, environmental, institutional, and policy dimensions.
