Estimating irrigation duration for high performance furrow irrigation on cracking clay soils

Smith, R. J. and Uddin, M. J. and Gillies, M. H. (2018) Estimating irrigation duration for high performance furrow irrigation on cracking clay soils. Agricultural Water Management, 206. pp. 78-85. ISSN 0378-3774

Abstract

Selection of an appropriate combination of flow rate and time to cut-off is critical to the achievement of high performance furrow irrigation. For the cotton growing regions of Australia the ready availability of land and the relative scarcity of water impose a constraint not present in all surface irrigation areas. In this situation the objective is to improve water use efficiency by maximising application efficiency. In this paper, simulations employing this strategy and historical furrow irrigation data have shown that application efficiency increases with flow rate up to a point where no further increase in efficiency is possible. They have also shown that for any field there is a simple linear relationship between time to cut-off and the time for the advance to reach mid-way down the field. This relationship provides a simple and robust guide for the selection of time to cut-off that requires no knowledge of the flow rate or soil moisture deficit. Application of the relationship delivers a significant increase in efficiency over that resulting from usual grower practice.


Statistics for USQ ePrint 34299
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Restricted access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 18 Jun 2018 04:56
Last Modified: 02 Jul 2018 01:20
Uncontrolled Keywords: furrow irrigation; cut-off time; irrigation performance; infiltration
Fields of Research : 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 > 8203 Industrial Crops > 820301 Cotton
Identification Number or DOI: 10.1016/j.agwat.2018.03.014
URI: http://eprints.usq.edu.au/id/eprint/34299

Actions (login required)

View Item Archive Repository Staff Only