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Books : Science : Agricultural Sciences : Irrigation
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The Dynamics of Mass Communication: Media in the Digital Age focuses on aspects of the media -- history, organization, ownership, economics, feedback, and career -- with increased focus on ethics and the critical cultural perspective. New to this edition is a section on the impact of the digital age in each media chapter. Dominick's cogent and lively writing style has made this text a student favorite.
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Take the mystery out of installing a watering system with this new edition of Sprinklers & Drip Systems. Visual guides and garden plans help you select, install, and maintain the right system—or systems—for your landscaping needs. Color photos assist in identifying the correct components when shopping for a particular sprinkler or drip system. You’ll save time, money, and conserve water by employing the book’s planning recommendations and installation instructions.Features:
* Excellent reference volume whether self-installing or hiring contractors
* Visual guides take the guesswork out of selecting the right sprinkler and drip system components
* Step-by-step photos and instructions for planning and installation, plus information on maintenance and repairs
* Showcases five different gardens to illustrate how particular systems address special landscaping needs
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This book provides a professional text for undergraduate and graduate agricultural and biological engineering students interested in soil and water conservation in rural and urban areas. Subject matter includes all the engineering phases of soil and urban areas. Subject matter includes all the engineering phases of soil and water conservation for a one or two semester course. The authors assume that the student has a basic knowledge of calculus, surveying, mechanics, hydraulics, soils, and computers. The analytical approach is emphasized and is supplemented by sufficient field data to illustrate practical applications. The text emphasizes engineering principles in the areas of erosion, drainage, irrigation, and water resources. Tables, charts, and diagrams have been included to provide practicing engineers with readily usable information as well. Many examples and problems are included to emphasize the design principles and to facilitate an understanding of the subject matter. Computer models and software program sources have been described where applicable in the text as well as access to some computer programs and models. In many instances, students will find using a spreadsheet advantageous for reviewing example problems and solving homework problems.
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The story of a crucial, dwindling natural resource: an invisible ocean of fresh water under the Great Plains.
The Ogallala aquifer contains enough water to fill Lake Erie not once but nine times over, and it stretches from Texas to South Dakota, from Colorado almost to Nebraska. Every year, five trillion gallons are pumped out for irrigation, and if the aquifer went dry (or, more accurately, when it goes dry), $20 billion worth of food and fiber would disappear practically overnight.
In this lively, carefully researched narrative, William Ashworth tells the history of the Ogallala, from its formation after the retreat of the glaciers through to its uncertain future. The most dramatic part of that history deals with efforts to exploit the hidden waters, starting with the primitive wells of long-vanished tribes, through the invention of the center-pivot sprinkler, and on to ever more sophisticated extraction technologies. This is an account of people as well as water, with many vignettes of those living in the shadow of the Ogallala's decline and ultimate demise.
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Microirrigation has become the fastest growing segment of the irrigation industry worldwide and has the potential to increase the quality of food supply through improved water fertilizer efficiency. This book is meant to update the text "Trickle Irrigation, Design, Operation and Management". This text offers the most current understanding of the management criteria needed to obtain maximum water and fertilization efficiency.
* Presents a detailed explanation of system design, operation, and management specific to various types of MI systems
* Analyzes proper use of irrigation technology and its effect to increase efficiency
* Provides an understanding to the basic science needed to comprehend operation and management
* Over 150 figures of designs and charts of systems including, surface drip, subsurface drip, spray/microsprinkler, and more
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Many large-scale irrigation projects established in developing countries have failed - despite huge inputs of foreign aid - because the institutions for opening and maintaining the projects proved inadequate. Ostrom counsels planners to look beyond a narrow concern with engineering and to let irrigation consumers involve themselves in the design, operation, and maintenance of water-supply systems.
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Step-by-step instructions on designing, installing and operating water supply systems based on hydraulic ram pumps. With illustrations and diagrams, and details of a pump designed for local manufacture and notes for those developing their own model.
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A Guide to Golf Course Irrigation System Design and Drainage details every phase of an irrigation program - from the system design to construction, from scheduling to operation, and much more. It also covers the fundamentals of drainage design and installation. Turfgrass managers and golf course superintendents will refer to this handy book often to plan and implement effective irrigation systems, ensure appropriate capacity, easy installation, and practical operation and maintenance.
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Irrigation is one of the most important human activities sustaining civilization. On average, irrigated crop yields are double those from unirrigated land. It has been estimated that to meet the needs of the 8 billion population by 2025, the irrigated area must expand more than 20% and irrigated crop yields must improve by 40% above current yields. The issues and the newest technologies are compiled in comprehensive chapters to facilitate efficient, sustainable, economical, and environmentally responsible irrigation. Contributors are scientists at the forefront of this important multifaceted area. Their diverse backgrounds in irrigation cover the broad spectrum of the science of irrigating crop plants. Subjects discussed include the latest information on monitoring technology, efficiency, and specific information tailored to individual crops.Also available:
Dryland Agriculture, Second Edition - ISBN 0891181601
Soybeans: Improvement, Production, and Uses, Third Edition - ISBN 0891181547
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One teacher's long journey to a kind of enlightenment.
"This is the best piece I've read on teaching in years. Not only does Guy nail issue after issue with laser-like precision, but he manages to afflict the comfortable and comfort the afflicted with humor and brief anecdotes, avoiding both the puffed-up academic pose and the grim earnestness of the wounded and the self-righteous. I really love it." Bill Ayers, Distinguished Professor of Education and author of "To Teach, The Journey of a Teacher", "Teaching Toward Freedom", and "Fugitive Days".
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Modern Irrigation Technologies reviews the experience of small holders with irrigation technologies under a range of diverse conditions in many different countries.
Some people argue that modern irrigation technologies are the key to increased food production. However, projects introducing modern irrigation technologies in the developing world have often failed because the irrigation hardware, which has been developed for high-technology commercial agriculture, cannot be easily adapted for the use of the smallholder.
The author identifies the pre-conditions relating to water availability, institutional support and economic opportunity that must be satisfied before small holders in developing countries can adopt irrigation methods and benefit from them. The circumstances in which modern technologies have been introduced are identified, and the relative success or otherwise of the initiatives are summarized.
The book also contains a practical review of the range of irrigation hardware that is available and indicates the types of equipment that are more likely to meet the requirements of the smallholder sector.
Modern Irrigation Technologies will be an invaluable guide to project workers, planners and small holders involved in planning and designing irrigation projects.
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This book, first published in 1990 and here reprinted is comprehensive, state-of-the art reference on the design principles and management techniques of two primary agricultural irrigation methods.The book presents a systematic approach to the optimal design, management and operation of these two systems. Focusing on the synthesis of the entire design process, the authors present the chapters in the sequence used to design systems with the analytical material presented and demonstrated in a concise manner.
For the first time in any book Sprinkle and Trickle Irrigation offers complete design strategies and presentations for all of the major types of sprinkle and trickle systems:
* Periodic-move
* Center-pivot
* Traveling sprinkler
* Linear-moving
* Set sprinkler
* Drip, spray and line-sourceSequential sample calculations that involve the steps in the design of typical irrigation systems are used extensively. As the book progresses, these calculations become more comprehensive and are linked together to form complete design packages for the various types of pressurized systems.
The book also presents a section on selecting pressurized irrigation systems, a review of soil-plant-water relationships, unique insight into pipeline hydraulics and economics, design specifications for fertilization and frost control, a glossary and an annotated bibliography of ASAE Standards for Pressurized Irrigation Systems.
Sprinkle and Trickle Irrigation is an important practical reference for agricultural engineers, irrigation system designers and agricultural managers, as well as a vital text for professors and researchers in agricultural engineering.
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This book comprises the proceedings of the International Conference on Water Resources of Arid and Semi-Arid regions of Africa. Africa's resources are threatened by an increasing population. It is important that the water resources in arid and semi-arid regions are developed in a sustainable manner. After an introduction about the difficulties in obtaining data, the main subject of groundwater recharge is discussed in various aspects: natural and artificial; socio-economic aspects of water demand management; geophysical, GIS and remote sensing techniques for groundwater exploration; climate change and its impact on water resources; vulnerability and risk assessment, and water management.
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Making a Large Irrigation Scheme Work provides a history of irrigation management in Mali from colonial times to post-independence. It looks at how irrigation management reforms came about at Mali’s Office du Niger and how relevant this reform process is for irrigation schemes in other countries.Mali’s irrigation scheme was an outcome of colonial settlement with the corresponding lack of rights for cultivators to own land, process paddy, and market rice. Post-independence, a coalition of government and irrigation agency staff contributed to governmental unwillingness to reform the scheme’s management. Government interest lay in satisfying the growing demand for rice from its burgeoning urban constituency and a fear of riots in response to rice shortages and high prices. It’s interest also lay with maintaining the support of the agency’s staff.
The authors analyze how field teams, funded by bilateral donors, shaped technical and institutional change to fully reform management and how grain market reforms provided farmers stronger incentives and raised yields. The combination of changes inside and outside the scheme gradually shifted the balance of power and led to a stakeholder setup in which organized farmers replaced the agency. Regime change to multiparty democracy and policy change toward economic liberalization then opened a window of opportunity that the government used to consolidate the reforms and the new balance of power.
The success of the reform process lies in the way Mali’s government came to commit to the irrigation reforms. The paper indicates how commitment by other governments may be achieved by using the same and other tools. Making Large Irrigation Schemes Work is a useful resource for professionals involved in the transfer of management authority from government to user associations.
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Egyptian agriculture is uniquely dependent on water, with over 95 per cent of agricultural production originating from land irrigated by the Nile. The improvement of irrigation systems and better control over water by farmers is therefore crucial to the drive to raise productivity in the current ocntext of scarce water resources, rich but underutilized land and changes in the institutional environment of the economy after "liberalization". This text evaluates the ambitious state-of-the-art Irrigation Improvement Project (IIP) and should be of interest to all those concerned with issues of water and development in the Middle East.
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Practical Drainage is easy to read and presented in a non-technical style generously supported with helpful illustrations. There are three key messages in this book: water moves sideways only slowly through soil--leading to a detailed description of how drains work; the how-and-why of perched water table methods of construction; and sands are different from one another--they must be tested before use in turf root zones. These key messages are preceded by detailed descriptions of how water moves into soils and the effects of compaction on that movement. The final chapters give step-by-step guidelines for calculating drain spacings and depths, based on measurements of the hydraulic conductivity of the soil and its various layers. There are also chapters about how to measure hydraulic conductivity and how to design and install sub-soil drainage systems.
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This publication provides guidance for water users and districts in selecting, managing, inspecting, and maintaining their water measurement devices. Describes the standard methods and devices used to measure irrigation water. Acquaints irrigation system operators with other established but less common methods and with new or special techniques.