Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/2761
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dc.contributor.authorLodge, Gregory Marken
dc.contributor.authorKing, Kathleen Loraen
dc.date.accessioned2009-10-29T16:38:00Z-
dc.date.issued2006-
dc.identifier.citationAustralian Journal of Agricultural Research, 57(8), p. 837-845en
dc.identifier.issn1444-9838en
dc.identifier.issn0004-9409en
dc.identifier.issn1836-5795en
dc.identifier.issn1836-0947en
dc.identifier.urihttps://hdl.handle.net/1959.11/2761-
dc.description.abstractStudies were conducted at 3 pasture sites in northern New South Wales to examine the effects of grazing treatments over 4 years (spring 1997 to spring 2001) on soil microbial biomass carbon (C), labile C, total C, and total nitrogen (N). These data were collected (0–0.05 m soil depth) at 9 sampling times in 2 replicates of 5 (native pastures) or 4 (a sown pasture) grazing treatments and examined for differences over time using cubic spline analyses. For each site, differences among grazing treatments were also examined in spring 2001 for herbage, litter, and root mass (kg DM/ha), ground cover (%), and perennial grass basal cover (%). Indices were also calculated for the C pool index (CPI), lability index (LI), a carbon management index (CMI), and the microbial quotient. Relationships among microbial biomass C, labile C, total organic C, CPI, LI, CMI, microbial quotient, herbage mass, litter mass, and ground cover were examined by linear regression and correlation analyses. For each of the sites, treatment differences in the linear trend over time for soil microbial biomass C, labile C, total organic C, or total N were not significantly different (P > 0.05). In spring 2001, (4 years after treatments commenced) there were also no significant effects of treatments within sites on soil total organic C and none of the indices (lability of C, CPI, LI, CMI, or the microbial quotient) indicated any distinct trends among treatments. However, in spring 2001, there were significant (P < 0.05) treatment effects at both native pasture sites for herbage mass, litter mass, and ground cover. Similarly, in autumn 2001, herbage mass, root mass, and perennial grass basal cover were lowest (P < 0.05) in the continuously grazed high-stocking rate treatment at the sown pasture site. For all data, microbial biomass C was 10.35% of labile C and labile C was 21.60% of total C. From autumn 1998 to spring 2001, labile C was positively correlated (P < 0.05) with total C (r = 0.72) and in spring 2001, these 2 variables were also highly correlated (r = 0.98).en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofAustralian Journal of Agricultural Researchen
dc.titleSoil microbial biomass, labile and total carbon levels of grazed sown and native pastures in northern New South Walesen
dc.typeJournal Articleen
dc.identifier.doi10.1071/AR05337en
dc.subject.keywordsSoil Biologyen
local.contributor.firstnameGregory Marken
local.contributor.firstnameKathleen Loraen
local.subject.for2008050303 Soil Biologyen
local.subject.seo2008829802 Management of Greenhouse Gas Emissions from Plant Productionen
local.profile.schoolAdministrationen
local.profile.emailkking8@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:3578en
local.publisher.placeAustraliaen
local.format.startpage837en
local.format.endpage845en
local.identifier.scopusid33747066361en
local.peerreviewedYesen
local.identifier.volume57en
local.identifier.issue8en
local.contributor.lastnameLodgeen
local.contributor.lastnameKingen
dc.identifier.staffune-id:kking8en
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:2837en
dc.identifier.academiclevelAcademicen
local.title.maintitleSoil microbial biomass, labile and total carbon levels of grazed sown and native pastures in northern New South Walesen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.relation.urlhttp://nla.gov.au/anbd.bib-an2856653en
local.search.authorLodge, Gregory Marken
local.search.authorKing, Kathleen Loraen
local.uneassociationUnknownen
local.year.published2006en
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