Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/12058
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dc.contributor.authorChejara, Vinod Ken
dc.contributor.authorKristiansen, Paulen
dc.contributor.authorSindel, Brian Men
dc.contributor.authorWhalley, Ralph Den
dc.contributor.authorNadolny, Christopheren
dc.date.accessioned2013-02-19T09:56:00Z-
dc.date.issued2012-
dc.identifier.citationThe Rangeland Journal, 34(2), p. 199-210en
dc.identifier.issn1834-7541en
dc.identifier.issn1036-9872en
dc.identifier.urihttps://hdl.handle.net/1959.11/12058-
dc.description.abstract'Hyparrhenia hirta' (L.) Stapf (Coolatai grass) is a summer-active, C₄ perennial tussock grass native to southern Africa and the Mediterranean region, which has invaded areas of native flora in Australia in recent decades. Understanding its seed and seedling dynamics and how various management treatments (e.g. mowing, herbicide and no management) affect these may assist in identifying the conditions and management strategies required to limit its invasion. The population dynamics of 'H. hirta' have not been comprehensively studied previously. A 2 year field experiment (December 2005-December 2007) was conducted to determine the seed-bank size, pattern of seedling emergence and survival of 'H. hirta' seedlings at three sites in northern New South Wales, Australia, under three treatments: unmanaged (control), mowing and herbicide treatments. The density of 'H. hirta' seeds in the soil at each experimental site under different treatments was measured in December 2005 at the start of the experiment, in December 2006 before the application of the second round of treatments and again at the end of the experiment in December 2007. 'Hyparrhenia hirta' seedlings were assessed at monthly intervals in permanent quadrats (0.5) to determine seedling emergence and survival. Seedling emergence occurred on many occasions during the 2 year period of the experiment in each treatment and at all sites but the main seedling flushes were observed from mid summer to early autumn. In 2007 at all sites seedling emergence declined by more than 90% on the mowing and herbicide treatments compared with the control treatment. Seedling survival was greater in the mowing and herbicide treatments than in the control treatment. The seedling cohorts emerging in winter had a lower survival. This study showed that 'H. hirta' infestations have a large viable seed bank (~3000m-²) dependent on the level of infestation and climatic conditions but that the seed-bank declines rapidly when seed addition is prevented. Some form of direct control of established 'H. hirta' plants in combination with providing appropriate grazing management to encourage competition between grasses will assist in the control of 'H. hirta'.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofThe Rangeland Journalen
dc.titleSeed-bank and seedling dynamics in 'Hyparrhenia hirta' are influenced by herbicide application and mowing managementen
dc.typeJournal Articleen
dc.identifier.doi10.1071/RJ11057en
dc.subject.keywordsCrop and Pasture Protection (Pests, Diseases and Weeds)en
local.contributor.firstnameVinod Ken
local.contributor.firstnamePaulen
local.contributor.firstnameBrian Men
local.contributor.firstnameRalph Den
local.contributor.firstnameChristopheren
local.subject.for2008070308 Crop and Pasture Protection (Pests, Diseases and Weeds)en
local.subject.seo2008960403 Control of Animal Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environmentsen
local.subject.seo2008820599 Winter Grains and Oil seeds not elsewhere classifieden
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailvinod_chejara@yahoo.comen
local.profile.emailpkristi2@une.edu.auen
local.profile.emailbsindel@une.edu.auen
local.profile.emailrwhalley@une.edu.auen
local.profile.emailchris.nadolny@environment.nsw.gov.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20130207-183447en
local.publisher.placeAustraliaen
local.format.startpage199en
local.format.endpage210en
local.identifier.scopusid84861932938en
local.peerreviewedYesen
local.identifier.volume34en
local.identifier.issue2en
local.contributor.lastnameChejaraen
local.contributor.lastnameKristiansenen
local.contributor.lastnameSindelen
local.contributor.lastnameWhalleyen
local.contributor.lastnameNadolnyen
dc.identifier.staffune-id:vchejaraen
dc.identifier.staffune-id:pkristi2en
dc.identifier.staffune-id:bsindelen
dc.identifier.staffune-id:rwhalleyen
dc.identifier.staffune-id:cnadolnyen
local.profile.orcid0000-0003-2116-0663en
local.profile.orcid0000-0002-4100-218Xen
local.profile.orcid0000-0002-2949-9891en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:12263en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleSeed-bank and seedling dynamics in 'Hyparrhenia hirta' are influenced by herbicide application and mowing managementen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorChejara, Vinod Ken
local.search.authorKristiansen, Paulen
local.search.authorSindel, Brian Men
local.search.authorWhalley, Ralph Den
local.search.authorNadolny, Christopheren
local.uneassociationUnknownen
local.year.published2012en
local.subject.for2020300409 Crop and pasture protection (incl. pests, diseases and weeds)en
local.subject.seo2020180602 Control of pests, diseases and exotic species in terrestrial environmentsen
Appears in Collections:Journal Article
School of Environmental and Rural Science
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