Design and Operation of Farm Irrigation Systems PDF Download
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Author: Glenn J. Hoffman
Publisher: American Society of Agricultural & Biological Engineers
ISBN: 9781892769640
Category : Electronic books
Languages : en
Pages : 0
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Book Description
"This edition provides the latest technology in the design of surface, sprinkler, and microirrigation systems along with basic information about soils and current information on estimating crop water requirements. New chapters have been added on planning systems, environmental issues, efficiency and uniformity, chemigation, and use of wastewater for irrigation."--Preface
Author: Glenn J. Hoffman
Publisher: American Society of Agricultural & Biological Engineers
ISBN: 9781892769640
Category : Electronic books
Languages : en
Pages : 0
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Book Description
"This edition provides the latest technology in the design of surface, sprinkler, and microirrigation systems along with basic information about soils and current information on estimating crop water requirements. New chapters have been added on planning systems, environmental issues, efficiency and uniformity, chemigation, and use of wastewater for irrigation."--Preface
Author: M. E. Jensen
Publisher:
ISBN:
Category : Irrigation farming
Languages : en
Pages : 829
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Book Description
Author: Marvin E. Jensen
Publisher: American Society of Agricultural & Biological Engineers
ISBN:
Category : Irrigation
Languages : en
Pages : 856
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Book Description
The role of irrigation in food and fiber production; Farm resources and system selection; Soil water; Salinity in irrigated agriculture; Water requirements; Drainage requirements and systems; Land shaping requirements; Farm water delivery systems; Farm pumps; Farm water distribution systems; Hydraulics of surface irrigation; Design and operation of gravity or surface systems; Fluid dynamics of sprinkler systems; Design and operation of sprinkler systems; Design and operation of trickle (drip) sustems; Evaluating irrigation systems and practices; Irrigation water management.
Author: Marvin Eli Jensen
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 829
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Book Description
Author:
Publisher:
ISBN:
Category : Irrigation engineering
Languages : en
Pages : 110
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Book Description
Author: Larry G. James
Publisher:
ISBN: 9780894648021
Category : Technology & Engineering
Languages : en
Pages : 543
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Book Description
Author: John L. Merriam
Publisher:
ISBN:
Category : Agricultural engineering
Languages : en
Pages : 346
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Book Description
Author: D. E. Campbell
Publisher: Food & Agriculture Org.
ISBN: 9789251024805
Category : Technology & Engineering
Languages : en
Pages : 156
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Book Description
Author: Jennifer Laffan
Publisher: NSW Agriculture
ISBN: 1742569285
Category : Technology & Engineering
Languages : en
Pages : 48
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Book Description
Centre pivots and lateral moves (CPLM) are pressurised irrigation systems that supply water to crops or pastures. They are suitable for a wide range of broadacre farming enterprises, different soil types and undulating terrain. This book is about: · the components of centre pivot and linear move irrigation systems · unique features of CPLM pressurised irrigation systems · fundamentals of a pressurised irrigation system and their impact on efficiency · measuring performance of CPLM systems · pressure and discharge tests on a pressurised irrigation system · pressure and discharge variations · how the performance characteristics impact on total water use and crop uniformity · evaluating the function of an irrigation system. This book focuses on the water delivery aspects and the key measures of efficiency: Field Application Efficiency, Distribution Uniformity, Average Application Rate and Average Application Depth per Pass. This publication was produced by Education Delivery, Tocal College. It supports the following competencies from National Training Package AHC10 Agriculture, Horticulture, Conservation and Land Management: AHCIRG502A – Design irrigation system maintenance and monitoring program
Author: B. Albinson
Publisher: IWMI
ISBN: 9290904712
Category : Farms, Small
Languages : en
Pages : 30
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Book Description
Smallholder irrigation systems–where farm sizes generally range from a fraction of a hectare to 10 hectares–pose special management problems, especially where the water available for irrigation is frequently less than the demand. The intensity of system adjustments required to meet individual farmer demands, and the administrative complexity of measuring and accounting water deliveries have generally proven excessive when attempting to meet “on demand†schedules, resulting in chaos (often characterized by illegal tampering with infrastructure, and vast differences of water use intensity at different locations in the system). The alternative–provision of a simple service, based on proportional sharing of available supplies on the basis of landholdings–has been resilient for many years over vast areas. The approach is based on a clear delineation between the part of the irrigation system that is actively managed (at various flow rates and water levels) and the part of the system that operates either at full supply level (with proportional division of water down to the level at which farmers rotate among their individual farms), or is completely shut. This operational design is known as a “structured†system, and has well-defined hydraulic characteristics, simplifying operation and management, in turn allowing a clearer definition of water entitlements and the responsibilities of agency staff and farmers. The approach is particularly suited to areas where water is scarce and discipline is needed to ration water among users. An additional benefit, which has been demonstrated in modeling studies using a well–proven model relating to water and yield, is that the productivity of water (which is more important than the more traditional productivity of land when water is scarce) is substantially increased when deficit irrigation is practiced–a widely observed and predictable response to rationed water supplies. Structured systems are most suited where water is scarce, clear definition of water entitlements is needed, management capacity is limited, and investment resources are limited. The approach to determining critical aspects of a structured system design is described in this report.
