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dc.contributor.authorIbell, Paula
dc.contributor.authorXu, Zhihong
dc.contributor.authorBlumfield, Tim
dc.contributor.authorNester, M.
dc.contributor.authorBubb, K.
dc.contributor.editorZhihong Xu, Chris E Johnson, Chengrong Chen, Timothy J Blumfield
dc.date.accessioned2017-05-03T12:51:28Z
dc.date.available2017-05-03T12:51:28Z
dc.date.issued2007
dc.date.modified2008-04-28T01:06:49Z
dc.identifier.urihttp://hdl.handle.net/10072/17975
dc.description.abstractTThe effects of routine and luxury weed control and fertilization treatments on diameter, height, carbon (d13C) and nitrogen (d15N) isotope composition in foliage were assessed in an 8-year-old, F1 hybrid pine (Pinus elliottii var. elliottii Pinus caribaea var. hondurensis) plantation, on typical sandy soils in southeast Queensland. The aim of this research was to identify how weed control and fertilization treatments affect nitrogen nutrition and water use in F1 hybrid pine plantations, together with tree growth. The results have indicated that a lack of weed competition has shown greater potential for height and diameter at breast height (Dbh) increment and d15N in the foliage. A strong correlation between growth and d15N existed for all canopy positions, demonstrating that foliar d15N may prove to be a better indicator of growth indices in the canopy than total foliar N concentrations alone. These differences could be in part due to discrimination against 15N by soil micro-fauna, during the processes of decomposition and mineralization and as a result of leaching of lighter 14N, where no weed cover exists. These results indicate that in an 8-year-old F1 hybrid pine plantation, luxury weed control treatments significantly affected foliar d15N, but not foliar d13C, nor foliar N or C concentrations. It is therefore concluded that luxury weed control treatments result in both greater height and Dbh increment and an increased pool of 15N abundance available for tree uptake as reflected in the foliage of 8-year-old F1 hybrid pine trees at this site
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent56732 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherCentre for Forestry and Horticultural Research
dc.publisher.placeGriffith University, Brisbane
dc.publisher.urihttps://link.springer.com/article/10.1065/jss2006.10.185
dc.relation.ispartofstudentpublicationY
dc.relation.ispartofconferencenameISFS 2007
dc.relation.ispartofconferencetitleLinking local management to global change challenges: The Proceedings of the International Symposium on Forest Soils and Ecosystem Health
dc.relation.ispartofdatefrom2007-08-19
dc.relation.ispartofdateto2007-08-23
dc.relation.ispartoflocationQueensland, Australia
dc.rights.retentionY
dc.subject.fieldofresearchcode300604
dc.titleEffects of establishment silviculture on carbon and nitrogen isotope compositions and tree growth in a F1 hybrid pine plantation of southeast Queensland
dc.typeConference output
dc.type.descriptionE1 - Conferences
dc.type.codeE - Conference Publications
gro.facultyGriffith Sciences, Griffith School of Environment
gro.rights.copyright© The Author(s) 2007. The attached file is posted here with permission of the copyright owners for your personal use only. No further distribution permitted. For information about this conference please refer to the publisher's website or contact the authors.
gro.date.issued2007
gro.hasfulltextFull Text
gro.griffith.authorXu, Zhihong
gro.griffith.authorBlumfield, Tim J.
gro.griffith.authorIbell, Paula T.


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