Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/13871
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dc.contributor.authorShakhane, Libuseng Men
dc.contributor.authorScott, Jim Men
dc.contributor.authorMurison, Robert Den
dc.contributor.authorMulcahy, Colinen
dc.contributor.authorHinch, Geoffreyen
dc.contributor.authorMorrow, Amberen
dc.contributor.authorMacKay, Duncanen
dc.date.accessioned2014-01-30T16:01:00Z-
dc.date.issued2013-
dc.identifier.citationAnimal Production Science, 53(7-8), p. 670-684en
dc.identifier.issn1836-5787en
dc.identifier.issn1836-0939en
dc.identifier.urihttps://hdl.handle.net/1959.11/13871-
dc.description.abstractAs part of the Cicerone Project's farmlet experiment, conducted on the Northern Tablelands of New South Wales, Australia, between July 2000 and December 2006, this study assessed the effects of varying soil fertility, pasture species and grazing management on the botanical composition of three 53-ha farmlets subjected to different management strategies. Starting with the same initial conditions, the farmlets were managed to reach different target levels of soil phosphorus (P) and sulfur (S); Farmlet A aimed at 60 mg/kg of Colwell P and 10 mg/kg S (KC₄₀) whereas Farmlets B and C both aimed at 20 and 6.5 mg/kg of P and S, respectively. Pastures were renovated on six out of eight paddocks on Farmlet A, but only one paddock of each of Farmlets B (typical management) and C (intensive rotational grazing) was renovated. Flexible rotational grazing was employed on Farmlets A and B (each of eight paddocks) while Farmlet C used intensive rotational grazing over its 17 major paddocks, which were further subdivided into 37 subpaddocks. This paper focuses on the botanical composition dynamics observed across all three farmlets and the explanatory variables associated with those changes. Eight assessments of botanical composition were carried out at approximately annual intervals across each of the 37 major paddocks distributed across the farmlets and the results for each of 49 species were aggregated into seven functional groups for analysis. The strongest correlation found was a negative curvilinear relationship between sown perennial grasses (SPG) and warm-season grasses (WSG). The most significant factors affecting the functional group changes were soil P, sowing phase, paddock and date. These factors led to significant increases in SPG and correspondingly lower levels of WSG on Farmlet A compared with Farmlet B. Farmlets B and C experienced similar, declining levels of SPG, and increasing levels of WSG suggesting that intensive rotational grazing did not lead to substantial changes in botanical composition, compared with flexible rotational grazing, in spite of the fact that intensive rotational grazing had much longer grazing rests and shorter graze periods than the other two farmlets. Soil P levels were also significantly associated with levels of cool-season annual grasses, legumes and herbs, especially on Farmlet A. In general, the largest differences in botanical composition were between Farmlet A and the other two farmlets; these differences were most closely associated with those plants categorised as sown, introduced, C₃pasture species. The levels of legume were generally low on all farmlets, due largely to the dry seasons experienced over most of the trial. Efforts to increase the legume composition on all farmlets were more successful on Farmlet A than on the other two farmlets due, presumably, to higher soil fertility on Farmlet A. Farmlet C, with its long rest periods and short graze periods, had a small proportion of legumes, due to the competitive effects of the accumulated tall grass herbage between grazings. The 'typical' management of Farmlet B also resulted in low levels of legume as well as increased 'patchiness' of the pastures and increased numbers of thistles.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofAnimal Production Scienceen
dc.titleChanges in botanical composition on three farmlets subjected to different pasture and grazing management strategiesen
dc.typeJournal Articleen
dc.identifier.doi10.1071/AN11177en
dcterms.accessRightsGolden
dc.subject.keywordsFarming Systems Researchen
dc.subject.keywordsApplied Statisticsen
dc.subject.keywordsCrop and Pasture Productionen
local.contributor.firstnameLibuseng Men
local.contributor.firstnameJim Men
local.contributor.firstnameRobert Den
local.contributor.firstnameColinen
local.contributor.firstnameGeoffreyen
local.contributor.firstnameAmberen
local.contributor.firstnameDuncanen
local.subject.for2008070107 Farming Systems Researchen
local.subject.for2008070399 Crop and Pasture Production not elsewhere classifieden
local.subject.for2008010401 Applied Statisticsen
local.subject.seo2008830401 Browse Cropsen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Science and Technologyen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailjscott@une.edu.auen
local.profile.emailrmurison@une.edu.auen
local.profile.emailghinch@une.edu.auen
local.profile.emaildmackay@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20121127-143744en
local.publisher.placeAustraliaen
local.format.startpage670en
local.format.endpage684en
local.identifier.scopusid84884548087en
local.peerreviewedYesen
local.identifier.volume53en
local.identifier.issue7-8en
local.access.fulltextYesen
local.contributor.lastnameShakhaneen
local.contributor.lastnameScotten
local.contributor.lastnameMurisonen
local.contributor.lastnameMulcahyen
local.contributor.lastnameHinchen
local.contributor.lastnameMorrowen
local.contributor.lastnameMacKayen
dc.identifier.staffune-id:jscotten
dc.identifier.staffune-id:rmurisonen
dc.identifier.staffune-id:ghinchen
dc.identifier.staffune-id:dmackayen
local.profile.orcid0000-0003-4731-865Xen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
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local.identifier.unepublicationidune:14084en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleChanges in botanical composition on three farmlets subjected to different pasture and grazing management strategiesen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorShakhane, Libuseng Men
local.search.authorScott, Jim Men
local.search.authorMurison, Robert Den
local.search.authorMulcahy, Colinen
local.search.authorHinch, Geoffreyen
local.search.authorMorrow, Amberen
local.search.authorMacKay, Duncanen
local.uneassociationUnknownen
local.year.published2013en
local.subject.for2020300207 Agricultural systems analysis and modellingen
local.subject.for2020300499 Crop and pasture production not elsewhere classifieden
local.subject.for2020490501 Applied statisticsen
local.subject.seo2020100501 Browse cropsen
Appears in Collections:Journal Article
School of Environmental and Rural Science
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