Improving Surge Flow Irrigation Efficiency Based On Analysis Of Infiltration And Hydrodynamic Effects

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Improving Surge Flow Irrigation Efficiency Based On Analysis Of Infiltration And Hydrodynamic Effects

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Author : Ernest T. Smerdon
language : en
Publisher:
Release Date : 1985

Improving Surge Flow Irrigation Efficiency Based On Analysis Of Infiltration And Hydrodynamic Effects written by Ernest T. Smerdon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Irrigation categories.

Modeling Infiltration And Hydrodynamic Effects On Surge Flow Surface Irrigation

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Author : Allie William Blair
language : en
Publisher:
Release Date : 1989

Modeling Infiltration And Hydrodynamic Effects On Surge Flow Surface Irrigation written by Allie William Blair and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

Wood Preservation

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Author : Patrick J. Marer
language : en
Publisher: UCANR Publications
Release Date : 1992

Wood Preservation written by Patrick J. Marer and has been published by UCANR Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Nature categories.

Selected Water Resources Abstracts

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Author :
language : en
Publisher:
Release Date : 1987

Selected Water Resources Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Water categories.

Does Surge Flow Improve The Efficiency Of Border Check Irrigation

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Author : Lateiro Salvador De Sousa
language : en
Publisher:
Release Date : 2011

Does Surge Flow Improve The Efficiency Of Border Check Irrigation written by Lateiro Salvador De Sousa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Irrigation categories.

[Truncated abstract] Improved irrigation performance can deliver both environmental and economic benefits from the production of irrigated crops. The objective of efficient irrigation design is to increase water application efficiency, distribution uniformity and requirement efficiency, while reducing deep percolation and tail water drainage losses. By improving system efficiency water losses are minimised and crop yields may be increased. Efficient systems also lead to better environmental and economic outcomes for the producer. The Harvey Irrigation Area (HIA) in the southwest of Western Australia is unique in the State because water is provided without pumping costs. Border-check irrigation is currently the main method of water application used in dairy farming to produce grass and has been reported as having a low irrigation efficiency of 50%. Different options to improve irrigation efficiency are available. The objective of these options is to uniformly replenish root zone moisture reserves whilst minimizing water losses via deep percolation below the root zone and tail water drainage from the end of the field. Options to achieve these objectives include increasing inflow rate, reducing field length and selecting the appropriate cut-off time for the input supply of water. These three options can be manipulated simultaneously under conditions of 'surge' flow, if soil characteristics are known. This research investigates the effects of two different flow regimes on the performance of border-check irrigation using the Surface IRrigation MODel (SIRMOD) as a design tool. Continuous flow and surge flow were compared in order to provide guidelines for improving the efficiency of border-check irrigation in the Harvey Irrigation Area. In order to use SIRMOD for design purposes, the necessary infiltration parameters were obtained from soil texture data. Initially, literature values were used to ascertain if surge irrigation could deliver improved irrigation performance. Once it was confirmed that surge irrigation had potential benefits over the common practice of border check irrigation, the model parameters were refined by field measurement. Soil water content was also measured before and after irrigation in order to assess the irrigation efficiency and water distribution over the site. Field slope was also measured as an input parameter to SIRMOD. Finally, the most efficient surge flow design from the model studies was implemented in the field and compared directly to the conventional border check irrigation method. Results from these field irrigation trials could also be used as a further cross-check on model performance. The resulting optimised models for border check and surge flow provided the necessary efficiency criteria for judging the relative performance of the two systems. At all steps in the model parameter refinement procedure (literature data to field data to full field irrigation trial data) it was found that surge flow improved irrigation efficiency compared to the border check method. The implemented field trial confirmed the surge design performance predicted by the model and should give irrigation managers confidence in using this modelling approach to optimize irrigation performance across different areas of the HIA...

Sustainable Agriculture For California

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Author : Steve Mitchell
language : en
Publisher:
Release Date : 1991

Sustainable Agriculture For California written by Steve Mitchell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Sustainable agriculture categories.

Government Reports Announcements Index

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Author :
language : en
Publisher:
Release Date : 1986-08

Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-08 with Science categories.

Texas State Documents

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Author :
language : en
Publisher:
Release Date : 1989

Texas State Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Government publications categories.

Texas State Documents Index

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Author :
language : en
Publisher:
Release Date : 1988

Texas State Documents Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Government publications categories.

Dissertation Abstracts International

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Author :
language : en
Publisher:
Release Date : 1986

Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Dissertations, Academic categories.