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dc.contributor.authorMonks, David P.
dc.contributor.authorSadatAsilan, K.
dc.contributor.authorMoot, Derrick J.
dc.date.accessioned2016-11-24T22:06:56Z
dc.date.issued2009
dc.identifier.issn0110-6589en
dc.identifier.urihttps://hdl.handle.net/10182/7614
dc.description.abstractCardinal temperatures (base (Tb), optimum (To) and maximum (Tm)) and thermal time (Tt) requirements for germination of 21 temperate annual and perennial grass, legume and weed species were calculated from incubator experiments. Cardinal temperatures were defined using an iterative broken-stick linear regression model of development rate against temperature. Species specific maximum germination rates were all >80% except for the 60% attained by ‘Pawera’ red clover. The maximums were stable from 5 to 20 °C with the exception of ‘Arrotas’ arrowleaf clover, ‘Advance’ tall fescue and ‘Vision’ cocksfoot which had <20% germination at 5°C. To was approximately 26 °C for ‘Woogenellup’ subterranean, ’Mihi’ Persian, alsike, red and strawberry clovers but ≤ 20 °C for white clover and the other annual clover species tested. A base temperature of 0°C was found for all species except ripgut brome (Tb= 4.0 °C) and Tm was ≥ 35 °C. Therma ltime requirements for germination were generally lower for annual than perennial clovers which may reflect adaptation to avoid out of season germination. Annual weed grasses, showed rapid germination which aids their competitive ability to invade establishing pastures. Vulpia hair grass seed germination was over 95% at 25°C and below; barley grass declined with increasing temperatures from 5 to 35 °C.en
dc.format.extent95-109en
dc.language.isoen
dc.publisherThe Agronomy Society of New Zealand
dc.relationThe original publication is available from - The Agronomy Society of New Zealand - http://www.agronomysociety.org.nz/2009-journal-papers.htmlen
dc.rightsCopyright © The Authors.
dc.source38th Agronomy Society Conferenceen
dc.subjectgrowing degree daysen
dc.subjectheat unitsen
dc.subjectBromus spp.en
dc.subjectCritesion glaucumen
dc.subjectTrifolium spp.en
dc.subjectVulpia myurosen
dc.titleCardinal temperatures and thermal time requirements for germination of annual and perennial temperate pasture speciesen
dc.typeConference Contribution - published
lu.contributor.unitLincoln University
lu.contributor.unitFaculty of Agriculture and Life Sciences
lu.contributor.unitDepartment of Agricultural Sciences
lu.contributor.unitBio-Protection Research Centre
dc.subject.anzsrc070302 Agronomyen
dc.relation.isPartOfAgronomy New Zealanden
pubs.finish-date2009-09-04en
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/AGSC
pubs.organisational-group/LU/BPRC
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/PE20
pubs.organisational-group/LU/Research Management Office/QE18
pubs.publication-statusPublisheden
pubs.publisher-urlhttp://www.agronomysociety.org.nz/2009-journal-papers.htmlen
pubs.start-date2009-09-03en
pubs.volume39en
lu.identifier.orcid0000-0002-5691-4915
lu.subtypeConference Paperen


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