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Impact of carbon farming practices on soil carbon in northern New South Wales

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dc.contributor.authorCowie, Annetteen
dc.contributor.authorLonergan, Vanessaen
dc.contributor.authorFazle Rabbi, Sheikh Mohammaden
dc.contributor.authorFornasier, Flavioen
dc.contributor.authorMacdonald, Catrionaen
dc.contributor.authorHarden, Stevenen
dc.contributor.authorKawasaki, Akitomoen
dc.contributor.authorSingh, Brajesh Ken
dc.date.accessioned2014-04-14T14:14:00Z
dc.date.issued2013
dc.description.abstractThis study sought to quantify the influence of 'carbon farming' practices on soil carbon stocks, in comparison with conventional grazing and cropping, in northern New South Wales. The study had two components: assessment of impacts of organic amendments on soil carbon and biological indicators in croplands on Vertosols of the Liverpool Plains; and assessment of the impact of grazing management on soil carbon in Chromosols of the Northern Tablelands. The organic amendment sites identified for the survey had been treated with manures, composts, or microbial treatments, while the conventional management sites had received only chemical fertilisers. The rotational grazing sites had been managed so that grazing was restricted to short periods of several days, followed by long rest periods (generally several months) governed by pasture growth. These were compared with sites that were grazed continuously. No differences in total soil carbon stock, or soil carbon fractions, were observed between sites treated with organic amendments and those treated with chemical fertiliser. There was some evidence of increased soil carbon stock under rotational compared with continuous grazing, but the difference was not statistically significant. Similarly, double-stranded DNA (dsDNA) stocks were not significantly different in either of the management contrasts, but tended to show higher values in organic treatments and rotational grazing. The enzymatic activities of β-glucosidase and leucine-aminopeptidase were significantly higher in rotational than continuous grazing but statistically similar for the cropping site treatments. Relative abundance and community structure, measured on a subset of the cropping sites, showed a higher bacteria : fungi ratio and provided evidence that microbial process rates were significantly higher in chemically fertilised sites than organic amendment sites, suggesting enhanced mineralisation of organic matter under conventional management. The higher enzyme activity and indication of greater efficiency of microbial populations on carbon farming sites suggests a greater potential to build soil carbon under these practices. Further research is required to investigate whether the indicative trends observed reflect real effects of management.en
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dc.identifier.citationSoil Research, 51(7-8), p. 707-718en
dc.identifier.doi10.1071/SR13043en
dc.identifier.issn1838-6768en
dc.identifier.issn1838-675Xen
dc.identifier.staffune-id:acowie4en
dc.identifier.staffune-id:vlonerg2en
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dc.identifier.urihttps://hdl.handle.net/1959.11/14697
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofSoil Researchen
dc.subject.keywordsCarbon Sequestration Scienceen
dc.subject.keywordsLand Capability and Soil Degradationen
dc.titleImpact of carbon farming practices on soil carbon in northern New South Walesen
dc.typeJournal Articleen
dcterms.accessRightsGolden
dspace.entity.typePublication
local.access.fulltextYesen
local.contributor.firstnameAnnetteen
local.contributor.firstnameVanessaen
local.contributor.firstnameSheikh Mohammaden
local.contributor.firstnameFlavioen
local.contributor.firstnameCatrionaen
local.contributor.firstnameStevenen
local.contributor.firstnameAkitomoen
local.contributor.firstnameBrajesh Ken
local.contributor.lastnameCowieen
local.contributor.lastnameLonerganen
local.contributor.lastnameFazle Rabbien
local.contributor.lastnameFornasieren
local.contributor.lastnameMacdonalden
local.contributor.lastnameHardenen
local.contributor.lastnameKawasakien
local.contributor.lastnameSinghen
local.description.statisticsepubsVisitors: 780<br />Views: 802<br />Downloads: 2en
local.format.endpage718en
local.format.startpage707en
local.identifier.epublicationsrecordune-20140319-144949en
local.identifier.handlehttps://hdl.handle.net/1959.11/14697en
local.identifier.issue7-8en
local.identifier.scopusid84890916351en
local.identifier.unepublicationidune:14912en
local.identifier.volume51en
local.output.categoryC1en
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.peerreviewedYesen
local.profile.emailacowie4@une.edu.auen
local.profile.emailvlonerg2@une.edu.auen
local.profile.emailsfazler2@une.edu.auen
local.profile.emailflavio.fornasier@entecra.iten
local.profile.emailc.macdonald@uws.edu.auen
local.profile.emailsteven.harden@dpi.nsw.gov.auen
local.profile.emailA.Kawasaki@uws.edu.auen
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local.profile.schoolSchool of Environmental and Rural Scienceen
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local.profile.schoolSchool of Environmental and Rural Scienceen
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local.publisher.placeAustraliaen
local.record.institutionUniversity of New Englanden
local.record.placeauen
local.search.authorCowie, Annetteen
local.search.authorLonergan, Vanessaen
local.search.authorFazle Rabbi, Sheikh Mohammaden
local.search.authorFornasier, Flavioen
local.search.authorMacdonald, Catrionaen
local.search.authorHarden, Stevenen
local.search.authorKawasaki, Akitomoen
local.search.authorSingh, Brajesh Ken
local.subject.for2008050302 Land Capability and Soil Degradationen
local.subject.for2008050301 Carbon Sequestration Scienceen
local.subject.for2020410601 Land capability and soil productivityen
local.subject.for2020410101 Carbon sequestration scienceen
local.subject.seo2008961402 Farmland, Arable Cropland and Permanent Cropland Soilsen
local.subject.seo2020180605 Soilsen
local.title.maintitleImpact of carbon farming practices on soil carbon in northern New South Walesen
local.uneassociationUnknownen
local.year.published2013en
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