Evaluating the performance of a real-time optimisation system for furrow irrigation

Koech, R. K. and Smith, R. J. and Gillies, M. H. (2014) Evaluating the performance of a real-time optimisation system for furrow irrigation. Agricultural Water Management, 142. pp. 77-87. ISSN 0378-3774

Abstract

This paper reports the performance evaluations undertaken on a real-time optimisation system for furrow irrigation (AutoFurrow). Trials for the system were undertaken on commercial furrow-irrigated cotton properties near St George and Dalby, Queensland Australia. The system performed robustly in the field and demonstrated its potential for substantial water savings; however, the results suggested that there was further scope for improvement in performance. To identify opportunities for improvement, the surface irrigation simulation model SISCO was used to investigate the effect of varying: the objective function, flow rate, irrigation deficit, infiltration scaling process and the model infiltration curve. It was found that a simple objective function that aims to maximise application efficiency (AE) can deliver accurate prediction of the irrigation performance and potentially add to the robustness of the optimisation process. It was also demonstrated that if a suitable flow rate is selected initially, then no further change is warranted. The predicted time to cut-off (TCO) was relatively insensitive to the irrigation deficit; however, any change in the irrigation deficit altered the AE predicted.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2014 Elsevier B.V. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 29 Jun 2014 23:04
Last Modified: 04 Jul 2016 05:17
Uncontrolled Keywords: furrow irrigation; performance; real-time optimisation system
Fields of Research : 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070105 Agricultural Systems Analysis and Modelling
09 Engineering > 0999 Other Engineering > 099901 Agricultural Engineering
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8298 Environmentally Sustainable Plant Production > 829805 Management of Water Consumption by Plant Production
Identification Number or DOI: 10.1016/j.agwat.2014.04.020
URI: http://eprints.usq.edu.au/id/eprint/25385

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