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dc.contributor.authorMoot, Derrick J.en
dc.contributor.authorPollock, Keith M.en
dc.contributor.authorLewis, Bradley S.en
dc.date.accessioned2013-01-30T22:47:13Z
dc.date.issued2012en
dc.identifier.citationMoot, D. J., Pollock, K. M. & Lewis, B. (2012). Plant population, yield and water use of lucerne sown in autumn at four sowing rates. In Proceedings of the New Zealand Grassland Association, 74, 97-102.en
dc.identifier.urihttps://hdl.handle.net/10182/5216
dc.description.abstractSuccessful establishment of lucerne requires an adequate plant population to maximise yield and maintain stand persistence. The impact of autumn sowing lucerne at four sowing rates was investigated in a split-plot experiment at Lincoln University, Canterbury from 2007–2012. Emerged seedlings represented about 50% of the seeds sown regardless of the 7–16 kg/ha sowing rate. Self-thinning occurred at a faster rate from the higher sowing rates with populations of 80 plants/m² in all treatments by Year 6. These populations ensured annual DM yields were maximised and similar across sowing dates and rates, in all years. However, the 10 t DM/ha yield in Year 1 was below the 13 t/ha average from Years 2–5. This suggests Year 1 crops were still in an establishment phase in their first spring after autumn sowing. This is supported by the initial spring water use efficiency (WUE) in Year 1 crops of 15–20 kg DM/ ha/mm of water used. This was lower than the 30–40 kg DM/ha/mm in subsequent years, and is consistent with Year 1 crops partitioning a higher proportion of assimilate below ground during the establishment phase. These calculated WUE values were probably overestimated because they were based on NIWA assumptions of 150 mm of available water for pastures, which appears to be too low for lucerne.en
dc.format.extent97-102en
dc.language.isoenen
dc.publisherNew Zealand Grassland Association.en
dc.relationThe original publication is available from - New Zealand Grassland Association.en
dc.rightsCopyright © The Authors and New Zealand Grassland Associationen
dc.sourceProceedings of the New Zealand Grassland Associationen
dc.subjectlucerneen
dc.subjectsowingen
dc.subjectestablishmenten
dc.subjectalfalfaen
dc.subjectMedicago sativaen
dc.titlePlant population, yield and water use of lucerne sown in autumn at four sowing rates.en
dc.typeConference Contribution - Published
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Agricultural Sciencesen
lu.contributor.unit/LU/Agriculture and Life Sciences/UNK-AGLSen
pubs.finish-date2012-11-08en
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/Agriculture and Life Sciences/UNK-AGLS
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.start-date2012-11-06en
pubs.volume74en
lu.identifier.orcid0000-0002-5691-4915
lu.subtypeConference Paperen


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