Irrigation Efficiency
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| Author | : Jean-Philippe Venot |
| Publisher | : Taylor & Francis |
| Total Pages | : 386 |
| Release | : 2017-07-06 |
| Genre | : Technology & Engineering |
| ISBN | : 113498975X |
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.
| Author | : Water Resources Scientific Information Center |
| Publisher | : |
| Total Pages | : 526 |
| Release | : 1973 |
| Genre | : Irrigation |
| ISBN | : |
| Author | : Geoff Connellan |
| Publisher | : CSIRO PUBLISHING |
| Total Pages | : 433 |
| Release | : 2013-02-20 |
| Genre | : Science |
| ISBN | : 0643106898 |
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.
| Author | : Megh R. Goyal |
| Publisher | : CRC Press |
| Total Pages | : 371 |
| Release | : 2019-02-01 |
| Genre | : Science |
| ISBN | : 0429595352 |
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.
| Author | : Lisa Palmer |
| Publisher | : St. Martin's Press |
| Total Pages | : 252 |
| Release | : 2017-05-09 |
| Genre | : Political Science |
| ISBN | : 1250084202 |
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.
| Author | : Raveendra Kumar Rai |
| Publisher | : Academic Press |
| Total Pages | : 680 |
| Release | : 2017-04-06 |
| Genre | : Technology & Engineering |
| ISBN | : 0128118563 |
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
| Author | : Eric Antwi Ofosu |
| Publisher | : CRC Press |
| Total Pages | : 282 |
| Release | : 2011-12-16 |
| Genre | : Technology & Engineering |
| ISBN | : 0415621038 |
Sub-Saharan Africa has an irrigation potential of about 42 million hectares of which only 17% is developed. Despite several investments in irrigation the growth is slow. This study aims at helping to achieve sustainable irrigation in sub-Saharan Africa, through gaining a better understanding of productive irrigation water use and effective management of irrigation development. The study is conducted in the White Volta sub-basin specifically in Northern Ghana and Southern Burkina Faso which have been experiencing rapid irrigation development since the mid 1990s. The study identified growing markets for irrigated products as an important driving force behind the expansion of irrigation which has given rise to new technologies. The new technologies have spread because they gave farmers direct control over water sources. These new technologies allow relatively small farm sizes which can be adequately managed by the surveyed farmers. As a result high productivities are achieved. The hydrological impact of upscaling irrigation in the sub-basin is sustainable and will maximize the overall benefits derived from water resources in the Volta Basin.
| Author | : Bruce Lankford |
| Publisher | : Routledge |
| Total Pages | : 249 |
| Release | : 2013-09-05 |
| Genre | : Nature |
| ISBN | : 1134079311 |
The efficient use of natural resources is key to a sustainable economy, and yet the complexities of the physical aspects of resource efficiency are poorly understood. In this challenging book, the author proposes a major advance in our understanding of this topic by analysing resource efficiency and efficiency gains from the perspective of common pool resources, applying this idea particularly to water resources and its use in irrigated agriculture. The author proposes a novel concept of "the paracommons", through which the savings of increased resource efficiency can be viewed. In effect he asks; "who gets the gain of an efficiency gain?" By reusing, economising and avoiding losses, wastes and wastages, freed up resources are available for further use by four ‘destinations’; the same user, parties directly connected to that user, the wider economy or returned to the common pool. The paracommons is thus a commons of – and competition for – resources salvaged by changes to the efficiency of natural resource systems. The idea can be applied to a range of resources such as water, energy, forests and high-seas fisheries. Five issues are explored: the complexity of resource use efficiency; the uncertainty of efficiency interventions and outcomes; destinations of freed up losses, wastes and wastages; implications for resource conservation; and the interconnectedness of users and systems brought about by efficiency changes. The book shows how these ideas put efficiency on a par with other dimensions of resource governance and sustainability such as equity, justice, resilience and access.
| Author | : Verel W. Benson |
| Publisher | : |
| Total Pages | : 80 |
| Release | : 1981 |
| Genre | : Energy conservation |
| ISBN | : |
| Author | : Santos Rocha, J. |
| Publisher | : Food & Agriculture Org. |
| Total Pages | : 126 |
| Release | : 2023-12-08 |
| Genre | : Political Science |
| ISBN | : 9251383847 |
Highly vulnerable to the effects of climate change, heat waves in Egypt are increasingly severe and frequent, raising the already high evaporation rate, accelerating crop transpiration, increasing soil aridity and elevating water requirements for both human and agricultural consumption in a country where water is imported. The forecasted spike in rainfall variability will affect flow of the Nile River, increasing both drought and high-flow years. While Egypt must produce more food for its rapidly growing population and confront high levels of child malnutrition, agricultural performance is slowing due to inefficient use of land, labour, water and energy along with environmental degradation and limited access to new technology, all of which favour increased incidence of pests and disease. Having tested climate smart agriculture (CSA) in four of Egypt’s most significant value chains – dairy, dates, maize and wheat – the authors demonstrate that CSA practices, technologies and policies will increase agricultural productivity and incomes, strengthen resilience to climate change and improve mitigation of its effects. These important, evidence-based findings have bearing well beyond Egypt’s borders. This publication is part of the Country Investment Highlights series under the FAO Investment Centre's Knowledge for Investment (K4I) programme.
