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Improving subsurface drainage design and management to reduce salt loads from irrigation areas in southeastern Australia

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dc.contributor.authorChristen, Evan, author
dc.contributor.authorSkehan, Dominic, author
dc.contributor.authorU.S. Committee on Irrigation and Drainage, publisher
dc.date.accessioned2020-05-06T18:36:19Z
dc.date.available2020-05-06T18:36:19Z
dc.date.issued2000-06
dc.descriptionPresented at the 2000 USCID international conference, Challenges facing irrigation and drainage in the new millennium on June 20-24 in Fort Collins, Colorado.
dc.description.abstractA field investigation on a new vineyard in the Murrumbidgee Irrigation Area showed that improved subsurface drainage systems reduce salt loads in drainage water whilst providing waterlogging and salinity control. By only draining the rootzone the drainage volume and salinity were greatly reduced. Improved design and management options were tested against the current practice of deep pipe drains (1.8 m depth) widely spaced (20 m apart) allowed to drain continuously. This drain configuration was managed to prevent flow when the water table was deeper than 1.2 m from the soil surface, and not during irrigations. This resulted in a 50 % reduction in the drainage salt load. Shallow (0.7 m depth) closely spaced drains (3.65 m apart) were also tested and reduced the drainage salt load by 95 % when compared to the unmanaged deep drains. This improved design and management will significantly reduce the amount of salt that requires disposal. This work, together with other field and modeling studies, has been used to develop a set of guidelines for subsurface drainage with the aim of improving drainage water quality.
dc.format.mediumborn digital
dc.format.mediumCD-ROMs
dc.format.mediumproceedings (reports)
dc.identifier.urihttps://hdl.handle.net/10217/206494
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofIrrigation Management
dc.relation.ispartofChallenges facing irrigation and drainage in the new millennium. Volume 1, Technical sessions
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.sourceContained in: Challenges facing irrigation and drainage in the new millennium. Volume 1, Technical sessions, Fort Collins, Colorado, June 20-24, http://hdl.handle.net/10217/46290
dc.titleImproving subsurface drainage design and management to reduce salt loads from irrigation areas in southeastern Australia
dc.title.alternativeIrrigation and drainage in the new millennium
dc.typeText

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