A Study of the Approaches, Methods, Techniques and Instruments Used in Five Major Irrigated Areas in the United States to Increase the Economic Efficiency of Water Use for Irrigation PDF Download
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Author: Lukas Klopper Oosthuizen
Publisher:
ISBN:
Category : Besproeiing
Languages : en
Pages : 104
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Author: Lukas Klopper Oosthuizen
Publisher:
ISBN:
Category : Besproeiing
Languages : en
Pages : 104
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Book Description
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 942
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Author:
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 954
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Author:
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 68
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Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251047682
Category : Technology & Engineering
Languages : en
Pages : 116
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Book Description
In the context of improving water productivity, there is a growing interest in deficit irrigation, an irrigation practice whereby water supply is reduced below maximum levels and mild stress is allowed with minimal effects on yield. Under conditions of scarce water supply and drought, deficit irrigation can lead to greater economic gains than maximizing yields per unit of water for a given crop; farmers are more inclined to use water more efficiently, and more water-efficient cash crop selection helps optimize returns. However, this approach requires precise knowledge of crop response to water as drought tolerance varies considerably by species, cultivar and stage of growth. The studies present the latest research concepts and involve various practices for deficit irrigation. Both annual and perennial crops were exposed to different levels of water stress, either during a particular growth phase, throughout the whole growing season or in a combination of growth stages. The overall finding, based on the synthesis of the different contributions, is that deficit or regulated-deficit irrigation can be beneficial where appropriately applied. Substantial savings of water can be achieved with little impact on the quality and quantity of the harvested yield. However, to be successful, an intimate knowledge of crop behavior is required, as crop response to water stress varies considerably.
Author: J. D. Rhoades
Publisher: Artabras
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 156
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Author: International Water Management Institute
Publisher: IWMI
ISBN: 9290903805
Category : Irrigation
Languages : en
Pages : 59
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Book Description
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.
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 420
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Author: U.S. National Academy of Sciences
Publisher: National Academies Press
ISBN: 030906421X
Category : Political Science
Languages : en
Pages : 243
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Book Description
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.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 856
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