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Efficiency and efficacy of drip irrigation in a Tasmanian Vineyard Irrigation performance was determined by dye tracer staining, soil hydraulic assessment and modelling

Citation

Hardie, M and Mitchelson, H and Doyle, R, Efficiency and efficacy of drip irrigation in a Tasmanian Vineyard Irrigation performance was determined by dye tracer staining, soil hydraulic assessment and modelling, Proceedings of the 5th Joint Soil Science Australia and New Zealand Society of Soil Science Conference, 2-7 December 2012, Hobart, Tasmania, pp. 218-220. ISBN 978-0-646-59142-1 (2012) [Refereed Conference Paper]

Copyright Statement

Copyright 2012 Australian Society of Soil Science Incorporated

Official URL: http://www.soilscienceaustralia.com.au/images/stor...

Abstract

Irrigation performance was determined by dye tracer staining, soil hydraulic assessment and modelling. The dye tracer studies demonstrated that infiltration through the topsoil was almost entirely vertical with little if any lateral water spread below the saturated area of ponding directly beneath the dripper. However in the subsoil, irrigation spread laterally between drippers via macropores rather than as saturated flow on top of the clay subsoil. Irrigation application uniformity was very low as the majority of the root zone was not wetted by irrigation. Pulse irrigation increased the proportion of the topsoil wetted by irrigation, although pulse irrigation was also associated with greater preferential flow beneath the rootzone. This study demonstrated that use of dye tracers is an effective, simple means of evaluating drip irrigation performance.

Item Details

Item Type:Refereed Conference Paper
Keywords:water use efficiency, drip irrigation performance, dye tracer, surge irrigation, preferential flow
Research Division:Agricultural and Veterinary Sciences
Research Group:Horticultural Production
Research Field:Horticultural Crop Growth and Development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural Crops
Objective Field:Horticultural Crops not elsewhere classified
Author:Hardie, M (Mr Marcus Hardie)
Author:Mitchelson, H (Miss Helene Mitchelson)
Author:Doyle, R (Dr Richard Doyle)
ID Code:77873
Year Published:2012
Deposited By:Agricultural Science
Deposited On:2012-06-02
Last Modified:2014-08-13
Downloads:3 View Download Statistics

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