Risk Return Analysis Of Irrigation System Design And Operating Rules
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Risk Return Analysis Of Irrigation System Design And Operating Rules
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Author : Kim C. Nielsen
language : en
Publisher:
Release Date : 1982
Risk Return Analysis Of Irrigation System Design And Operating Rules written by Kim C. Nielsen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Irrigation efficiency categories.
A model was developed to simulate winter wheat production on irrigated farmland similar to that found near Hermiston, Oregon. The simulated farm is irrigated with a side roll sprinkler system. A well is located adjacent to the wheat field and the water is delivered by an electrically powered pump. The major components of the model are: 1. The soil moisture component which estimates daily soil moisture level. The soil moisture level is a function of daily precipitation, daily irrigation and daily evapotranspiration. Evapotranspiration is calculated as a function of measured pan evaporation, wheat plant stage of development and the soil moisture level. 2. The irrigation component which schedules daily irrigation based on the decision strategies supplied by the model user. There are three major parts of each strategy, the irrigation system design, the set time in hours and the soil moisture level that initiates irrigation. 3. The yield component of the model which estimates wheat grain yield as a function of daily temperature, daily soil moisture, and stage of plant growth. The scheduling of irrigation will create variability in the soil moisture level across the field. This variability of soil moisture is incorporated in the yield component. 4. The risk/returns component which calculates the net returns and utility. Utility is equal to the average net return minus the standard deviation weighted by a risk aversion factor. Wheat production was simulated for 19 years of daily weather data from the Hermiston Agricultural Experiment Station from 1963-1981. Several strategies were compared. The comparisons were made of the yields, water use, irrigation costs, net returns, risk and utility of the various strategies. The strategies were ranked according to maximum utility. The results indicated that designing irrigation systems for maximum yields did not result in the highest utility. The optimum strategies were those that initiated irrigation at a low level of soil moisture depletion and used a system with a relatively lower capital investment. The average annualized investment cost f or the five strategies with the highest yields was $76.43 per acre. The annualized investment cost for the five strategies with the highest utility was $57.54 per acre. The difference in average utility between the two groups was $19.37 per acre. The strategy with the highest yield had a utility level of $295.77 per acre. The strategy with the highest utility had a utility level of $337.12 per acre. The analysis included only those costs associated with irrigation. Utility was more sensitive to labor costs and water charges than to the cost of energy and interest rates. The level of risk aversion made very little difference in the relative level of utility for the different strategies. If the moisture holding capacity of the soil was reduced then the level of risk aversion made a bigger difference in the relative level of utility.
Masters Theses In The Pure And Applied Sciences
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Author : Wade H. Shafer
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Masters Theses In The Pure And Applied Sciences written by Wade H. Shafer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 28 (thesis year 1 983) a total of 10,661 theses titles from 26 Canadian and 197 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 28 reports theses submitted in-1983, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Policy Analysis Of Water Management For The Netherlands Vol 13 Model For Sprinkler Irrigation System Design Cost And Operation
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Author : Rand Corporation
language : en
Publisher:
Release Date : 1980
Policy Analysis Of Water Management For The Netherlands Vol 13 Model For Sprinkler Irrigation System Design Cost And Operation written by Rand Corporation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Integrated Flood Risk Management
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Author : Kuniyoshi Takeuchi
language : en
Publisher: Taylor & Francis
Release Date : 2022-10-10
Integrated Flood Risk Management written by Kuniyoshi Takeuchi and has been published by Taylor & Francis this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-10-10 with Technology & Engineering categories.
This book tackles the question of how we can manage flood-related disaster risks, such as from typhoons, monsoons, and torrential rain, which have been intensified by climate change and have generated unprecedented floods, landslides and debris flows worldwide. It presents recent conceptual developments in disasters, risk and resilience, and surveys UN policies on environment and development as well as disaster management. Sustainable and resilient development requires an integrated approach and human empowerment. Japan provides a useful example of effective flood management and disaster recovery in its current strategies for river and basin integrated flood management. Very few English-language books present up-to-date Japanese experiences for students and professionals in the context of global trends, relevant to a time of climate change and with global application. • Outlines an integrated approach to flood risk management in the context of UN initiatives • Details Japanese good practice developed through culture and the needs of a changing society Integrated Flood Risk Management is ideal for professionals working for environmental agencies, hydrologists and engineers, as well as students of disaster management and water resources development.
Irricab
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Author :
language : en
Publisher:
Release Date : 1985
Irricab written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Irrigation categories.
The Economics Of Irrigation In The United States
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Author :
language : en
Publisher:
Release Date : 1958
The Economics Of Irrigation In The United States written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Irrigation categories.
Selected Irrigation Return Flow Quality Abstracts 1970 1971
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Author : Gaylord V. Skogerboe
language : en
Publisher:
Release Date : 1973
Selected Irrigation Return Flow Quality Abstracts 1970 1971 written by Gaylord V. Skogerboe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Irrigation categories.
Selected Irrigation Return Flow Quality Abstracts 1970 1971
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Author :
language : en
Publisher:
Release Date : 1973
Selected Irrigation Return Flow Quality Abstracts 1970 1971 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Irrigation categories.
Water Law Constraints To Siting And Operating Coal Fired Electric Generation Plants In Kentucky
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Author : Carey S. Rosemarin
language : en
Publisher:
Release Date : 1980
Water Law Constraints To Siting And Operating Coal Fired Electric Generation Plants In Kentucky written by Carey S. Rosemarin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Coal-fired power plants categories.
Irrigation Manual
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Author : Andreas Savva
language : fr
Publisher: Food & Agriculture Org
Release Date : 2010
Irrigation Manual written by Andreas Savva and has been published by Food & Agriculture Org this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Technology & Engineering categories.
This manual (most of whose modules were originally published 2001-2002) aims at strengthening various aspects of irrigation development, mainly emphasizing the engineering, agronomic and economic aspects of smallholder irrigation, in view of the limited practical references available in this area. It also introduces the irrigation practitioner to the social, health and environmental aspects, providing a bridge between the various disciplines involved in irrigation development.--Publisher's description.