The influence of perennial ryegrass (Lolium perenne L.) cultivars on white clover (Trifolium repens L.) establishment and morphology: A dissertation submitted in partial fulfilment of the requirements for the Degree of Bachelor of Agricultural Science with Honours at Lincoln University

dc.contributor.authorMartin, Kirsty E.
dc.date.accessioned2023-03-20T22:50:08Z
dc.date.available2023-03-20T22:50:08Z
dc.date.issued2012
dc.description.abstractPerennial ryegrass pastures (Lolium perenne L.) were sown on 27 March 2012 with eight different cultivar treatments of a perennial ryegrass varying in ploidy (diploid or tetraploid), maturity (early or late flowering) and phenotype (open, broad leaf or fine, dense leaf) characteristics. A 50:50 mix of two white clover (Trifolium repens L.) cultivars was hand sown on 28 March in all plots 2012. Ryegrass and white clover herbage production, botanical composition, seedling development, shoot: root ratios, plant numbers and clover morphology of autumn sown pastures were assessed with particular reference to maturity and phenotype appearances. There was no advantage in terms of dry matter production from sowing different cultivar treatments. In September the dry matter production of the treatments ranged from 1529.77 kg DM/ha (One 50) to 1882.76 kg DM/ha (Commando). However, these results were not significantly different. In September, Abermagic treatment contained the highest amount of weeds, however it is unknown why. Kamo and Commando treatments contained a much higher percentage of dead matter in the sward compared to One 50 which contained the least. Perennial ryegrass content and white clover content in the swards did not differ significantly in any of the treatments. Significant differences were also found between development and cultivar however, it was unclear why this result occurred as it contradicted what was expected. Overall, cultivar effects on white clover do not occur in the first year of establishment due to ryegrass cultivars not mature enough to express characteristics that may influence the growth of white clover in the sward. Sowing rate, nitrogen application and severity of grazing should be incorporated into future studies to understand more about clover content in different ryegrass cultivar swards. Future studies after establishment should give more significant differences between ryegrass cultivars due to differences in characteristics such as leaf size, heading date and ploidy.en
dc.format.extentix, 69 pages
dc.identifier.urihttps://hdl.handle.net/10182/15958
dc.language.isoen
dc.publisherLincoln Universityen
dc.rights.accessRightsDigital thesis can be viewed by current staff and students of Lincoln University only. If you are the author of this item, please contact us if you wish to discuss making the full text publicly available.en
dc.rights.urihttps://researcharchive.lincoln.ac.nz/pages/rights
dc.subjectperennial ryegrassen
dc.subjectLolium perenne L.en
dc.subjectwhite cloveren
dc.subjectTrifolium repens L.en
dc.subjectestablishmenten
dc.subjectcultivaren
dc.subjectmorphologyen
dc.subjectyielden
dc.subjectDM productionen
dc.subjectcharacteristicsen
dc.subjectstolonsen
dc.subjecttiller densityen
dc.subject.anzsrc2020ANZSRC::300406 Crop and pasture improvement (incl. selection and breeding)en
dc.titleThe influence of perennial ryegrass (Lolium perenne L.) cultivars on white clover (Trifolium repens L.) establishment and morphology: A dissertation submitted in partial fulfilment of the requirements for the Degree of Bachelor of Agricultural Science with Honours at Lincoln Universityen
dc.typeDissertationen
lu.contributor.unitDepartment of Agricultural Sciencesen
lu.thesis.supervisorEdwards, G.
thesis.degree.grantorLincoln Universityen
thesis.degree.levelOtheren
thesis.degree.nameBachelor of Agricultural Science with Honoursen
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