Download or read book Multiple Uses of Water in Irrigated Areas written by International Water Management Institute and published by IWMI. This book was released on 1999 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is being transferred out of agriculture to meet the growing demand in other areas, often without an agreement of or compensation to farmers with irrigated land and water rights. Furthermore, there is a failure to recognize that irrigation systems supply water not only for the main fields, but also for domestic uses, home gardens, trees and other permanent vegetation, and livestock. Other productive uses include fishing, harvesting of aquatic plants and animals, and a variety of other enterprises such as brick making. In addition, irrigation systems can have a positive or negative effect on wildlife habitats. Thus, the withdrawal of water affects the rural household, rural economy, and the environment in a number of ways. This paper argues that to ensure efficient, equitable, and sustainable water use, to reduce poverty and improve the well-being of the community, irrigation and water resources policies need to take into account all uses and users of water within the irrigation system. The multiple uses of water in the Kirindi Oya irrigation system are examined in this paper. An interdisciplinary group of scientists have investigated a number of areas including water accounting, water quality, household water use, the valuing of water for alternative uses, and the complementarities, competition, and conflicts among uses and users.
Download or read book Water Conservation Reuse and Recycling written by Academy of Sciences of the Islamic Republic of Iran and published by National Academies Press. This book was released on 2005-03-01 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: In December 2002, a group of specialists on water resources from the United States and Iran met in Tunis, Tunisia, for an interacademy workshop on water resources management, conservation, and recycling. This was the fourth interacademy workshop on a variety of topics held in 2002, the first year of such workshops. Tunis was selected as the location for the workshop because the Tunisian experience in addressing water conservation issues was of interest to the participants from both the United States and Iran. This report includes the agenda for the workshop, all of the papers that were presented, and the list of site visits.
Download or read book Water Requirements for Irrigation and the Environment written by Marinus G. Bos and published by Springer Science & Business Media. This book was released on 2008-11-23 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Water for the Future written by U.S. National Academy of Sciences and published by National Academies Press. This book was released on 1999-03-09 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the result of a joint research effort led by the U.S. National Academy of Sciences and involving the Royal Scientific Society of Jordan, the Israel Academy of Sciences and Humanities, and the Palestine Health Council. It discusses opportunities for enhancement of water supplies and avoidance of overexploitation of water resources in the Middle East. Based on the concept that ecosystem goods and services are essential to maintaining water quality and quantity, the book emphasizes conservation, improved use of current technologies, and water management approaches that are compatible with environmental quality.
Download or read book The Use of Saline Waters for Crop Production written by J. D. Rhoades and published by Artabras. This book was released on 1992 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Management written by Martin Burton and published by CABI. This book was released on 2010 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many countries irrigated agriculture consumes a large proportion of the available water resources, often over 70% of the total. There is considerable pressure to release water for other uses and, as a sector, irrigated agriculture will have to increase the efficiency and productivity of its water use. This is particularly true for manually operated irrigation systems managed by government agencies, which provide water for a large number of users on small landholdings and represent 60% of the total irrigated area worldwide. Drawing on the author's 30 years of experience in some 28 countries, this book offers knowledge of the management of irrigation and drainage systems, including traditional technical areas of systems operation and maintenance, and expanding managerial, institutional and organizational aspects. Chapters provide guidelines to improve management, operation and maintenance processes, which move management thinking out of traditional public-sector mindsets to a more customer-focused, performance-oriented service delivery. As a practical guide to improve efficiency and productivity in irrigated agriculture, this book will be essential reading for irrigation managers and technicians as well as students and policy makers in water management, agriculture and sustainable development.
Download or read book Multiple uses and water quality Report submitted to the Council of Agriculture and the Agricultural Engineering Research Center of the Republic of China written by and published by IWMI. This book was released on with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supplemental Irrigation a Highly Efficient Water Use Practice written by Theib Oweis and published by ICARDA. This book was released on 1997 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple Uses of Water Services in Large Irrigation Systems written by D. Renault and published by FAO Irrigation and Drainage Pa. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mapping Systems and Services for Multiple Uses of Water Services (MASSMUS) methodology is a special module that addresses multiple uses of water. It is part of Mapping Systems and Services for Canal Operation Techniques (MASSCOTE), developed by the Food and Agriculture Organization of the United Nations (FAO), it has been in use since 2000 for the auditing of medium to large irrigation systems, and for planning modernization of their operation and management.
Download or read book The Extremes and In betweens of Irrigation written by Mikhail Smilovic and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Agriculture uses more water than any other human activity in the world. Projections of increasing demands on agriculture along with climatic change and variability necessitate evaluating the current and potential contributions of irrigation water to agriculture, and initiatives to improve production while reducing our demands on surface and groundwater systems. This thesis develops and demonstrates new procedures to determine appropriate estimates of agricultural production and water use resulting from proposed changes in irrigation water use. This research improves on previous efforts to evaluate the increasing or decreasing of full irrigation at regional-scale, and presents the first broadly-applicable methodology for evaluating supplemental irrigation at nested spatiotemporal scales.Irrigation has generally been evaluated at its extremes, defining areas exclusively as either fully irrigated or non-irrigated. Previous efforts to estimate the contributions of irrigation to current yields and evaluate potential changes in production have determined generalizations relating irrigated and non-irrigated yields from temporally and spatially limited statistical data. Such efforts have admittedly limited their investigations by evaluating only the extremes of irrigation and further by correlating the separate contributions of surface water and groundwater to production. This research first improves on estimating the potential of the extremes, that is increasing or decreasing full irrigation, by evaluating changes in irrigated area as they relate specifically to irrigation-source. Further, this research develops and demonstrates the first broadly-applicable methodologies for evaluating the in-betweens of full and non-irrigation, namely supplemental irrigation. Supplemental irrigation holds significant opportunity to increase agricultural and water productivity, and reduce water use. By recognising a system of irrigation different than the extremes, including potentially reducing water use on irrigated fields and increasing limited water use on non-irrigated fields at appropriate and opportune times, the in-betweens of irrigation allow for the benefits of supporting production while not necessarily further appropriating water for irrigation.This thesis first evaluates the potential changes in agricultural production and water use resulting from the complete expansion of full irrigation under two scenarios related to the adoption of specific irrigation sources, demonstrated for rice and wheat in India. The results show a potential increase in production of 14-25% for rice and 3% for wheat, with a 31% and 3% increase in water use respectively. Similarly, the study investigates the decreases in agricultural production from stopping irrigation, and we estimate that rice would be at 60% of current production, and wheat at 51%. Together, these two evaluations showcase the end ranges of the relationship between agricultural production and irrigation water use. Specifically, this is achieved by partitioning region-specific rice and wheat production into that related to irrigated and non-irrigated areas, and further by irrigation source. This partitioning of production by irrigation source, to the best of our knowledge, is novel. The partitions are used to estimate potential increases in agricultural production, and evaluating such increases as explicitly related to irrigation source, is similarly novel. " --
Download or read book Environmental water needs and impacts of irrigated agriculture in river basins A framework for a new research program written by Smakhtin, V. and published by IWMI. This book was released on 2002 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Pricing Irrigation Water written by Yacov Tsur and published by Routledge. This book was released on 2010-09-30 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: As globalization links economies, the value of a country's irrigation water becomes increasingly sensitive to competitive forces in world markets. Water policy at the national and regional levels will need to accommodate these forces or water is likely to become undervalued. The inefficient use of this resource will lessen a country's comparative advantage in world markets and slow its transition to higher incomes, particularly in rural households. While professionals widely agree on what constitutes sound water resource management, they have not yet reached a consensus on the best ways of implementing policies. Policymakers have considered pricing water - a debated intervention - in many variations. Setting the price 'right,' some say, may guide different types of users in efficient water use by sending a signal about the value of this resource. Aside from efficiency, itself an important policy objective, equity, accessibility, and implementation costs associated with the right pricing must be considered. Focusing on the examples of China, Mexico, Morocco, South Africa, and Turkey, Pricing Irrigation Water provides a clear methodology for studying farm-level demand for irrigation water. This book is the first to link the macroeconomics of policies affecting trade to the microeconomics of water demand for irrigation and, in the case of Morocco, to link these forces to the creation of a water user-rights market. This type of market reform, the contributors argue, will result in growing economic benefits to both rural and urban households.
Download or read book Sustainability of Irrigated Agriculture written by L.S. Pereira and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Is irrigation fit for purpose A review of the relationships between scheme size and performance of irrigation systems written by McCarthy, Nancy and published by Intl Food Policy Res Inst. This book was released on 2023-04-18 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irrigation is increasingly being called upon to help stabilize and grow food and water security in the face of multiple crises; these crises include climate change, but also recent global food and energy price crises, including the 2007/08 food and energy price crises, and the more recent crises triggered by the COVID 19 pandemic and the war on Ukraine. While irrigation development used to focus on public, large-scale, surface- and reservoir-fed systems, over the last several decades, private small-scale investments in groundwater irrigation have grown in importance and are expected to see rapid future growth, particularly in connection with solar-powered pumping systems. But is irrigation ‘fit-for-purpose’ to support population growth, economic development, and multiple food, energy and climate crises? This paper reviews how fit-for-purpose irrigation is with a focus on economies of scale of surface and groundwater systems, and a particular examination of systems in Sub-Saharan Africa where the need for expansion is largest. The review finds challenges for both larger surface and smaller groundwater systems in the face of growing demand for irrigated agriculture and dwindling and less reliable water supplies. To support resilience of the sector, we propose both a holistic design and management improvement agenda for larger surface systems, and a series of suggestions to improve sustainability concerns of groundwater systems
Download or read book Climbing the Water Ladder written by Barbara C. P. Koppen and published by IWMI. This book was released on 2009 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Local government can be the pivot to make this happen.
Download or read book Multiple uses of irrigation water in the Hakra 6 R Distributary Command Area Punjab Pakistan written by and published by IWMI. This book was released on with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimating Water Use in the United States written by National Research Council and published by National Academies Press. This book was released on 2002-08-22 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Across the United States, the practices for collecting water use data vary significantly from state to state and vary also from one water use category to another, in response to the laws regulating water use and interest in water use data as an input for water management. However, many rich bodies of water use data exist at the state level, and an outstanding opportunity exists for assembling and statistically analyzing these data at the national level. This would lead to better techniques for water use estimation and to a greater capacity to link water use with its impact on water resources. This report is a product of the Committee on Water Resources Research, which provides consensus advice to the Water Resources Division (WRD) of the USGS on scientific, research, and programmatic issues. The committee works under the auspices of the Water Science and Technology Board of the National Research Council (NRC). The committee considers a variety of topics that are important scientifically and programmatically to the USGS and the nation and issues reports when appropriate. This report concerns the National Water-Use Information Program (NWUIP).
