Download or read book On Irrigation Efficiencies written by Marinus Gijsberthus Bos and published by . This book was released on 1990 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction;definition of the problem;method of investigation applied;some results not directly related to irrigation efficiency;analysis and evaluation of the data from the questionnaire with respect to irrigation efficiency;practical application of the study results with some examples;evaluation of the applied approach;conclusions and recommendations.
Download or read book Encyclopedia of Water Science Print written by Bobby A. Stewart and published by CRC Press. This book was released on 2003-07-31 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt: PRINT/ONLINE PRICING OPTIONS AVAILABLE UPON REQUEST AT [email protected]
Download or read book Management Strategies for Water Use Efficiency and Micro Irrigated Crops written by Megh R. Goyal and published by CRC Press. This book was released on 2019-02-01 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Management Strategies for Water Use Efficiency and Micro Irrigated Crops presents new research and technologies for making better use of water resources for agricultural purposes. The chapters focus on better management to improve allocation and irrigation water efficiency and look at performance factors as well. Chapters look at irrigation technology, environmental conditions, and scheduling of water application. One section of the book focuses on water management in the cultivation of sugarcane, a very important industrial crop used in many fields. Other sections are devoted to principles and challenging technologies, water use efficiency for drip-irrigated crops, performance of fertigated rice under micro irrigation, and evaluation of performance of drip-irrigated crops. This valuable book is a must for those struggling to find ways to address the need to maintain efficient crop production in the midst of water shortages. With chapters from hands-on experts in the field, the book will be an invaluable reference and guide to effective micro irrigation methods.
Download or read book Water Use Efficiency for Irrigated Turf and Landscape written by Geoff Connellan and published by CSIRO PUBLISHING. This book was released on 2013-02-20 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Achieving high water use efficiency in maintaining turf, trees and landscape areas is a core responsibility of open space managers. Water Use Efficiency for Irrigated Turf and Landscape provides a logical and scientifically sound approach to irrigation in urban areas in Australia. It is based on green space delivering defined outcomes using the principles of water sensitive urban design and irrigation efficiency. The book covers all stages of the water pathway – from the source to delivery into the plant root zone. Major topics include system planning, estimating water demand, water quality, irrigation systems, soil management and irrigation performance evaluation. Clearly presented explanations are included, as well as line drawings and worked examples, and a plant water use database covering more than 250 plant species. A Water Management Planning template is included to guide water managers and operators through a process that will deliver a sound plan to achieve sustainable turf, urban trees and landscapes. Best Management Practice Irrigation principles are outlined and their implementation in open space turf and landscape situations is explained. The benefits and limitations of the various methods of delivering water to plants are covered, together with case studies and guidelines for specific horticultural situations. Methodologies to evaluate irrigated sites are included along with recommended benchmark values. The book presents the latest irrigation technology, including developments in water application, control technology and environmental sensors such as weather stations, soil moisture sensors and rain sensors.
Download or read book Planning and Evaluation of Irrigation Projects written by Raveendra Kumar Rai and published by Academic Press. This book was released on 2017-04-06 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planning and Evaluation of Irrigation Projects: Methods and Implementation presents the considerations, options and factors necessary for effective implementation of irrigation strategies, going further to provide methods for evaluating the efficiency of systems-in-place for remedial correction as needed. As the first book to take this lifecycle approach to agricultural irrigation, it includes real-world examples not only on natural resource availability concerns, but also on financial impacts and measurements. With 21 chapters divided into two sections, this book is a valuable resource for agricultural and hydrology engineers, conservation scientists and anyone seeking to implement and maintain irrigation systems. Uses real-world examples to present practical insights Incorporates both planning and evaluation for full-scope understanding and application Illustrates both potential benefits and limitations of irrigation solutions Provides potential means to increase crop productivity that can result in improved farm income
Download or read book On Irrigation Efficiencies written by Marinus Gijsberthus Bos and published by . This book was released on 1974 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drip Irrigation for Agriculture written by Jean-Philippe Venot and published by Taylor & Francis. This book was released on 2017-07-06 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Initially associated with hi-tech irrigated agriculture, drip irrigation is now being used by a much wider range of farmers in emerging and developing countries. This book documents the enthusiasm, spread and use of drip irrigation systems by smallholders but also some disappointments and disillusion faced in the global South. It explores and explains under which conditions it works, for whom and with what effects. The book deals with drip irrigation 'behind the scenes', showcasing what largely remain 'untold stories'. Most research on drip irrigation use plot-level studies to demonstrate the technology’s ability to save water or improve efficiencies and use a narrow and rather prescriptive engineering or economic language. They tend to be grounded in a firm belief in the technology and focus on the identification of ways to improve or better realize its potential. The technology also figures prominently in poverty alleviation or agricultural modernization narratives, figuring as a tool to help smallholders become more innovative, entrepreneurial and business minded. Instead of focusing on its potential, this book looks at drip irrigation-in-use, making sense of what it does from the perspectives of the farmers who use it, and of the development workers and agencies, policymakers, private companies, local craftsmen, engineers, extension agents or researchers who engage with it for a diversity of reasons and to realize a multiplicity of objectives. While anchored in a sound engineering understanding of the design and operating principles of the technology, the book extends the analysis beyond engineering and hydraulics to understand drip irrigation as a sociotechnical phenomenon that not only changes the way water is supplied to crops but also transforms agricultural farming systems and even how society is organized. The book provides field evidence from a diversity of interdisciplinary case studies in sub-Saharan Africa, the Mediterranean, Latin America, and South Asia, thus revealing some of the untold stories of drip irrigation.
Download or read book Irrigation Efficiency written by Water Resources Scientific Information Center and published by . This book was released on 1973 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Efficiency and Water Balance of the Little Wind Unit on the Wind River Indian Reservation in Wyoming written by Samantha P. Rosado and published by . This book was released on 2017 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: In semi-arid states such as Wyoming that receive 12 inches or less of rainfall annually, supplemental irrigation water is paramount to maintain productive agricultural systems. Anytime water is stored, transported, or distributed, however, only a fraction makes it to its final destination. Assessment and updating of irrigation system efficiency, and infrastructure, is a recognized need on many western reservations. Irrigation efficiency hasn't been quantified for the Little Wind Unit, the largest irrigation system on the Wind River Indian Reservation (WRIR) in Wyoming, since 1994, when investigators found overall irrigation efficiency to be between 35 and 40%, equating to 4,000 to 8,000 acre-feet of water loss during the irrigation season. In this study, two different methods were used to quantify and locate potential water losses in the Little Wind Unit: the calculation of an agricultural water balance and targeted geophysics techniques. A water balance was developed for May through September from 1990 to 2013 to quantify monthly losses and identify long-term changes in the larger system. In addition, GEM2, an electromagnetic geophysical sensor that measures resistivity with depth, was used to determine seepage loss for the main delivery canal. Synoptic flow measurements were used to assess the effectiveness of the GEM2 in mapping and quantifying seepage losses and to calculate conveyance efficiency. The purpose of the research was to generate site-specific information for the WRIR to assess irrigation system water losses for improved irrigation efficiency for a group of irrigation systems that have historically contributed to unsatisfied water demands among water users. Results of the twenty-four year water balance revealed large errors and data gaps associated with the inflows, outflows, diversions, and precipitation data, which made closing the water balance impossible and identified specific needs for better data. Irrigation efficiencies ranged from 50 to 70% for the LWU, but large variability impacts the understanding of irrigation efficiency. Economic assessment showed that in some years more profits could have been realized with better irrigation efficiencies. Irrigation efficiency decreased linearly with increased diversions for the study period, showing no difference in terms of management (diversions) in wet or dry years. Conveyance efficiencies for reaches measured in the main canal of Ray were greater than 85%. Based on the results, greater temporal and spatial distribution data are needed to fully assess irrigation system performance, in order to make agriculture on the Reservation productive and sustainable.
Download or read book Irrigation Water Use and Management written by United States. Interagency Task Force on Irrigation Efficiencies. Technical Work Group and published by . This book was released on 1978 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WATER ACCOUNTING FOR WATER GOVERNANCE AND SUSTAINABLE DEVELOPMENT written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-06-27 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is growing interest in water accounting, why it is needed, what benefits it brings, and equally important, how it can be put into practice. Water accounting is not a new idea, yet it is an alarmingly simple one. It is about quantifying water resources and uses of water, much like financial accounts provide information on income and expenditure. Interest in water accounting is based on the premise that ‘We cannot plan and manage what we do not measure’ – a statement that few would disagree with. However, given the current focus on water as a precious and limiting resource, the risks of extreme floods and droughts, and water’s central role in the 2030 Agenda, it is difficult to understand why so little attention is given to water accounting and to making sure we have enough water. Indeed, estimates suggest that by 2050, if we continue with our current approach to water management, global water demand will exceed supply by over 40%, which would put at risk 45% of global GDP, 52% of the world’s population, and 40% of grain production (WWDR, 2016). This concern is supported by the World Economic Forum that consistently ranks water crises as a top global risk (WEF, 2015). Reports from South Africa (January 2018) suggesting that Cape Town may be the world’s first major city to face the prospect of running out of water following severe drought, is a timely ‘wake-up call’ for everyone to focus on accounting for water.
Download or read book Crop Consumptive Irrigation Requirements and Irrigation Efficiency Coefficients for the United States written by United States. Soil Conservation Service. Special Projects Division and published by . This book was released on 1976 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hot Hungry Planet written by Lisa Palmer and published by St. Martin's Press. This book was released on 2017-05-09 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.N. predicts the Earth will have more than 9.6 billion people by 2050. With resources already scarce, how will we feed them all? Journalist Lisa Palmer has traveled the world for years, documenting the cutting-edge innovations of people and organizations on the front lines of fighting the food gap.
Download or read book Standards for the Calculation of Irrigation Efficiencies written by ICID Committee on Assembling Irrigation Efficiency Data and published by . This book was released on 1978 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Use Efficiency for Irrigated Turf and Landscape written by Geoff Connellan and published by CSIRO PUBLISHING. This book was released on 2013 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Achieving high water use efficiency in maintaining turf, trees and landscape areas is a core responsibility of open space managers. Water Use Efficiency for Irrigated Turf and Landscape provides a logical and scientifically sound approach to irrigation in urban areas in Australia. It is based on green space delivering defined outcomes using the principles of water sensitive urban design and irrigation efficiency. The book covers all stages of the water pathway - from the source to delivery into the plant root zone. Major topics include system planning, estimating water demand, water quality, irrigation systems, soil management and irrigation performance evaluation. Clearly presented explanations are included, as well as line drawings and worked examples, and a plant water use database covering more than 250 plant species. A Water Management Planning template is included to guide water managers and operators through a process that will deliver a sound plan to achieve sustainable turf, urban trees and landscapes. Best Management Practice Irrigation principles are outlined and their implementation in open space turf and landscape situations is explained. The benefits and limitations of the various methods of delivering water to plants are covered, together with case studies and guidelines for specific horticultural situations. Methodologies to evaluate irrigated sites are included along with recommended benchmark values. The book presents the latest irrigation technology, including developments in water application, control technology and environmental sensors such as weather stations, soil moisture sensors and rain sensors.
Download or read book Irrigation Water Use and Management written by United States. Interagency Task Force on Irrigation Efficiencies and published by . This book was released on 1979 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Efficiency in Small farm Areas written by Marinus Gijsberthus Bos and published by . This book was released on 1974 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of the responses of 29 countries to a questionnaire on data relating to farm units on irrigation projects, collected by the International Commission on Irrigation and Drainage; result of a proposal mooted by the Dutch National Committee.
