New approach to estimate the additional water requirements in sprinkler irrigation: a predictive model

Uddin, Jasim and Smith, Rod and Hancock, Nigel and Foley, Joseph (2012) New approach to estimate the additional water requirements in sprinkler irrigation: a predictive model. In: ICID & Irrigation Australia 2012 Conference and Trade Show , 24-29 June 2012, Adelaide, Australia.

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Abstract

A regression model was developed from ET rates measured over sprinkler irrigated cotton by an ECV/energy balance technique. Rates from several trials were nondimensionalised and averaged to remove variation caused by cloud, time of day and experimental factors. Prior to irrigation the nondimensional ET followed a linear relationship. After commencing irrigation the rate of ET quickly jumped to a significantly higher value and stabilized to follow a linear relationship until conclusion of the irrigation. The ET decreased over the post irrigation drying period, following an exponential decay until again reaching a steady value. The model allows estimation of the additional water requirements in sprinkler irrigation to be estimated for other times and locations.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Deposited with blanket permission of Irrigation Australia Ltd.
Depositing User: Mr Md Jasim Uddin
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 17 Oct 2012 04:58
Last Modified: 03 Jul 2013 01:14
Uncontrolled Keywords: sprinkler irrigation; irrigation; sprinklers
Fields of Research (FOR2008): 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070199 Agriculture, Land and Farm Management not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/21494

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