Show simple item record

dc.contributorHunt, Jamesen_US
dc.contributorMcBeath, Thereseen_US
dc.contributorLilley, Julianneen_US
dc.contributorMoore, Andrewen_US
dc.contributorVerburg, Kirstenen_US
dc.contributorRobertson, Michaelen_US
dc.contributorOliver, Yvetteen_US
dc.contributorWard, Philen_US
dc.contributorMilroy, Stephenen_US
dc.contributorWhitbread, Anthonyen_US
dc.creatorKirkegaard, Johnen_US
dc.identifier.citationJohn Kirkegaard, James Hunt, Therese McBeath, Julianne Lilley, Andrew Moore, Kirsten Verburg, Michael Robertson, Yvette Oliver, Phil Ward, Stephen Milroy, Anthony M. Whitbread. (7/8/2014). Improving water productivity in the Australian Grains industry—a nationally coordinated approach. Crop & Pasture Science, 65, pp. 583-601.en_US
dc.description.abstractImproving the water-limited yield of dryland crops and farming systems has been an underpinning objective of research within the Australian grains industry since the concept was defined in the 1970s. Recent slowing in productivity growth has stimulated a search for new sources of improvement, but few previous research investments have been targeted on a national scale. In 2008, the Australian grains industry established the 5-year, AU$17.6 million, Water Use Efficiency (WUE) Initiative, which challenged growers and researchers to liftWUEof grain-based production systems by 10%. Sixteen regional grower research teams distributed across southern Australia (300–700mm annual rainfall) proposed a range of agronomic management strategies to improve water-limited productivity. A coordinating project involving a team of agronomists, plant physiologists, soil scientists and system modellers was funded to provide consistent understanding and benchmarking of water-limited yield, experimental advice and assistance, integrating system science and modelling, and to play an integration and communication role. The 16 diverse regional project activities were organised into four themes related to the type of innovation pursued (integrating break-crops, managing summer fallows, managing in-season water-use, managing variable and constraining soils), and the important interactions between these at the farm-scale were explored and emphasised. At annual meetings, the teams compared the impacts of various management strategies across different regions, and the interactions from management combinations. Simulation studies provided predictions of both a priori outcomes that were tested experimentally and extrapolation of results across sites, seasons and up to the whole-farm scale.We demonstrated experimentally that potential exists to improve water productivity at paddock scale by levels well above the 10% target by better summer weed control (37–140%), inclusion of break crops (16–83%), earlier sowing of appropriate varieties (21–33%) and matching N supply to soil type (91% on deep sands). Capturing synergies from combinations of pre- and in-crop management could increase wheat yield at farm scale by 11–47%, and significant on-farm validation and adoption of some innovations has occurred during the Initiative. An ex post economic analysis of the Initiative estimated a benefit : cost ratio of 3.7 : 1, and an internal return on investment of 18.5%. We briefly review the structure and operation of the initiative and summarise some of the key strategies that emerged to improve WUE at paddock and farm-scale.en_US
dc.publisherCSIRO Publishingen_US
dc.sourceCrop & Pasture Science;65,(2014) Pagination 583,601en_US
dc.subjectwateruse efficiencyen_US
dc.subjectgrains industryen_US
dc.titleImproving water productivity in the Australian Grains industry—a nationally coordinated approachen_US
dc.typeJournal Articleen_US
cg.subject.agrovocdryland farmingen_US
cg.contributor.centerCommonwealth Science and Industrial Research Organisation - CSIROen_US
cg.contributor.centerMurdoch Universityen_US
cg.contributor.centerGeorg-August-Universitat Gottingen - uni-goettingenen_US
cg.contributor.crpCRP on Dryland Systems - DSen_US
cg.contributor.funderNot Applicableen_US
cg.contributor.project-lead-instituteInternational Crops Research Institute for the Semi-Arid Tropics - ICRISATen_US
cg.coverage.regionAustralia and New Zealanden_US
dc.identifier.statusLimited accessen_US

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

DSpace software copyright © 2002-2015  DuraSpace
MELSpace content providers and partners accept no liability to any consequence resulting from use of the content or data made available in this repository. Users of this content assume full responsibility for compliance with all relevant national or international regulations and legislation.
Theme by 
@mire NV