Scheme Irrigation Water Needs and Supply PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Scheme Irrigation Water Needs and Supply PDF full book. Access full book title Scheme Irrigation Water Needs and Supply by C. J. Brouwer. Download full books in PDF and EPUB format.
Author: C. J. Brouwer
Publisher: Food & Agriculture Org.
ISBN: 9789251035078
Category : Irrigation
Languages : en
Pages : 204
Get Book Here
Book Description
Author: C. J. Brouwer
Publisher: Food & Agriculture Org.
ISBN: 9789251035078
Category : Irrigation
Languages : en
Pages : 204
Get Book Here
Book Description
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251035856
Category : Technology & Engineering
Languages : en
Pages : 324
Get Book Here
Book Description
Author: W. Bart Snellen
Publisher: Food & Agriculture Org.
ISBN: 9789251038765
Category : Political Science
Languages : en
Pages : 60
Get Book Here
Book Description
Irrigation Scheme Operation and Maintenance is the tenth in the series of training manuals on irrigation prepared jointly with ILRI (International Institute for Land Reclamation and Improvement). The manual presents some of the difficulties that irrigation organizations confront in undertaking their duties and provides some orientations on how to resolve them. The paper then proceeds to discuss the methods of operating an irrigation network and the working principles involved. The maintenance tasks are discussed. To draw similarities and differences the maintenance of a motorcycle is used as a reference for the corresponding activities in an irrigation scheme. Finally, a reference is made to the need for having an effective financial control whereby the management of the system has enough resources to undertake the operation and maintenance tasks. The manual is addressed to small and medium schemes and assumes that the management organization is already in place.
Author: Jean-Philippe Venot
Publisher: Taylor & Francis
ISBN: 113498975X
Category : Technology & Engineering
Languages : en
Pages : 386
Get Book Here
Book Description
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: J. Doorenbos
Publisher:
ISBN:
Category : Crops
Languages : en
Pages : 202
Get Book Here
Book Description
Calculation of crop evapotranspiration; Selection of crop coeficient; Calculation of field irrigation requirements.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251376646
Category : Nature
Languages : en
Pages : 666
Get Book Here
Book Description
Introduction about what this manual is covering concentrating on Large Scale Irrigation (LSI), diversion barrage or weir, intake (with auxiliary structures), and most common conveyance structures suitable for LSI. A very brief overview of an approach to match water needs with water availability (demand vs supply) with references and links to Food and Agriculture Organization (FAO) literature that is covering the topic in detail. A brief reference to the most common methods to obtain necessary hydrological parameters for IRR scheme design. A very brief overview of the importance of knowledge of geological conditions and the investigation needed to obtain geotechnical design parameters (including the most common geotechnical tests to obtain design parameters). Planning phase considerations regarding diversion and intake structure, discussing the role of the main components. More technical discussion on each component of the weir or intake, including formula and worked examples (hydraulic and structural computations). Conceptual, hydraulic, and structural considerations of main conveyance components, with emphasis and more detail on most used components (such as canals, siphons, aqueducts, retaining walls, etc.). A very brief overview of the approach to irrigation water management and Operations & Maintenance (O&M), with references and links to FAO literature that is covering the topic in detail. Standard specification for irrigation construction material.
Author: Kevin Sene
Publisher: Springer Nature
ISBN: 3031582691
Category :
Languages : en
Pages : 526
Get Book Here
Book Description
Author: D. J. Molden
Publisher: IWMI
ISBN: 9290903562
Category : Agriculture
Languages : en
Pages : 34
Get Book Here
Book Description
Introsuction; Performance indicatores for comparison; Features of the selected indicators; The indicators; Application; Temporal and spatial variation of indicators within a project; Limitations of the indicators; Interpretation of results; Discussion; data requirements to calculate performance indicators; Calculation example of performance indicators; World markrt prices of agricultural; products in constant 1995 dollars.
Author: B. E. van den Bosch
Publisher: Food & Agriculture Org.
ISBN: 9789251034187
Category : Business & Economics
Languages : en
Pages : 80
Get Book Here
Book Description
Water intake to a field; Water level in field channels; Water distribution within the canal network; Elow measurement; Protective and other canal structures; Common problems in structures; Maintenance and repair works; Structures and minor scheme structure.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309179254
Category : Science
Languages : en
Pages : 158
Get Book Here
Book Description
This report contains a collection of papers from a workshopâ€"Strengthening Science-Based Decision-Making for Sustainable Management of Scarce Water Resources for Agricultural Production, held in Tunisia. Participants, including scientists, decision makers, representatives of non-profit organizations, and a farmer, came from the United States and several countries in North Africa and the Middle East. The papers examined constraints to agricultural production as it relates to water scarcity; focusing on 1) the state of the science regarding water management for agricultural purposes in the Middle East and North Africa 2) how science can be applied to better manage existing water supplies to optimize the domestic production of food and fiber. The cross-cutting themes of the workshop were the elements or principles of science-based decision making, the role of the scientific community in ensuring that science is an integral part of the decision making process, and ways to improve communications between scientists and decision makers.
