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dc.contributor.authorIbell, Paulaen_US
dc.contributor.authorXu, Zhihongen_US
dc.contributor.authorBlumfield, Timen_US
dc.date.accessioned2017-05-03T11:47:38Z
dc.date.available2017-05-03T11:47:38Z
dc.date.issued2010en_US
dc.date.modified2011-03-07T08:54:56Z
dc.identifier.issn14390108en_US
dc.identifier.doi10.1007/s11368-010-0222-6en_AU
dc.identifier.urihttp://hdl.handle.net/10072/36909
dc.description.abstractPurpose Soil carbon (C) and nutrient pools under different plantation weed control and fertilizer management treatments were assessed in a 7-year-old, F1 hybrid (Pinus elliottii var. elliottii נPinus caribaea var. hondurensis) plantation in southeast Queensland, Australia. This research aimed to investigate how early establishment silvicultural treatments would affect weed biomass, soil C, nitrogen (N) and other nutrient pools; and soil C (d13C) and N isotope composition (d15N) to help explain the key soil processes regulating the soil C and nutrient pools and dynamics. Materials and methods Soils were sampled in June 2006 in both the planting row and in the inter-planting row at three depths (0-5, 5-10, and 10-20 cm). Soil parameters including total and labile C and N pools; soil d13C and d15N; total phosphorus (P); extractable potassium (K); moisture content and weed biomass were investigated. Results and discussion The luxury weed control treatments significantly reduced weed biomass and its organic residues returned to the soil in the first 7 years of plantation development. This resulted in significant variations at some depths and positions in soil d13C, d15N, extractable K, hot water extractable organic C (HWEOC), hot water extractable total N (HWETN), potentially mineralizable N (PMN), and soil moisture content (MC). Luxury weed control in the absence of luxury fertilization also significantly decreased extractable K. There was a significant interaction between soil depth and sampling position for soil total C, total N, HWEOC, and HWETN. Weed biomass correlated positively with soil total N, d13C, PMN, MC, HWEOC, and HWETN. Conclusions Luxury weed control treatments significantly reduced weed biomass leading to a reduction of soil organic matter. Soil d13C and d15, together with the other soil labile C and N pools, were sensitive and useful indicators of soil C dynamics and N cycling processes in the exotic pine plantation of subtropical Australia.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherSpringeren_US
dc.publisher.placeGermanyen_US
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom1027en_US
dc.relation.ispartofpageto1038en_US
dc.relation.ispartofissue6en_US
dc.relation.ispartofjournalJournal of Soils and Sedimentsen_US
dc.relation.ispartofvolume10en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchSoil Sciences not elsewhere classifieden_US
dc.subject.fieldofresearchcode050399en_US
dc.titleEffects of weed control and fertilization on soil carbon and nutrient pools in an exotic pine plantation of subtropical Australiaen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.date.issued2010
gro.hasfulltextNo Full Text


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