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dc.contributor.authorGillespie, Benjamin J.
dc.contributor.authorLucas, Richard J.
dc.contributor.authorMoot, Derrick J.
dc.contributor.authorEdwards, Grant
dc.date.accessioned2012-05-31T03:28:40Z
dc.date.issued2006
dc.identifier.citationGillespie, B. J., Lucas, R. J., Moot, D. J. & Edwards, G. R. (2006). Can topdressing with salt increase oversowing success and pasture quality on steep, south facing slopes in hill country pastures? Proceedings of the New Zealand Grassland Association, 68, 349–353.
dc.identifier.urihttps://hdl.handle.net/10182/4513
dc.description.abstractTwo experiments were conducted in sodium deficient (<0.03% Na in DM) pastures on steep, south facing slopes at Mt Grand, Hawea, Central Otago (600 m.a.s.l), to determine the effect of the application of coarse salt (NaCl) fertiliser on pasture composition and establishment of oversown seeds. In Experiment 1, factorial combinations of salt (0, 150 kg NaCl/ha), N (0,100 kg N/ha as urea) and sulphur superphosphate (0, 500 kg/ ha) fertilisers were applied to 30 x 8 m plots in early December 2003. Balansa clover (10 kg seed/ha) and subterranean clover (10 kg/ha) seeds were oversown into each plot in March 2004. Plots where salt was applied were grazed intensively by Merino ewes immediately after salt application creating up to 50% bare ground. In December 2004, pastures where salt had been applied one year earlier were shorter, had a lower percentage of white clover and a higher percentage of bare ground and balansa clover. In Experiment 2, factorial combinations of salt fertiliser (0, 100 kg NaCl/ha) and seed (no seed, mixture of Caucasian clover (10 kg/ha), Lotus pendunculatus (2 kg/ha) and plantain (2 kg/ha)) were applied together to 5 x 10 m plots in September 2004. In April 2005, pastures where salt was applied were shorter, had fewer grass seedheads, a lower percentage of resident grasses and litter but a higher percentage of bare ground and plantain. There were more seedlings of plantain where salt was (6.5 seedlings/m²) than where it was not applied (1.1 seedlings/m²). This small plot work indicates that salt fertiliser application to Na-deficient herbage can enhance grazing intensity. By creating soil disturbance and reducing competition from resident grasses, salt application increased the establishment of oversown seeds of plantain and balansa clover. Establishment of the slow growing species (Caucasian clover, lotus) and the large seeded subterranean clover appeared to be unsuccessful under the conditions of the experiments. Salt application is a tool for pasture management and improvement in the hill/high country that could be used together with other methods such as herbicides, seeding, sub-division, grazing management and fertiliser.en
dc.description.sponsorshipDominion Salt Ltd and the Miss E A, Hellaby Indigenous Grassland Trust for financial support for the project.
dc.format.extent349-353en
dc.language.isoen
dc.publisherNew Zealand Grassland Association
dc.relationThe original publication is available from - New Zealand Grassland Associationen
dc.rightsCopyright © The Authors and New Zealand Grassland Association.
dc.source68th New Zealand Grassland Association Conferenceen
dc.subjectgrazingen
dc.subjectsodiumen
dc.subjectoversowingen
dc.subjecthill countryen
dc.titleCan topdressing with salt increase oversowing success and pasture quality on steep, south facing slopes in hill country pastures?en
dc.typeConference Contribution - published
lu.contributor.unitLincoln University
lu.contributor.unitFaculty of Agriculture and Life Sciences
lu.contributor.unitDepartment of Agricultural Sciences
lu.contributor.unitSoil, Plants and Ecological Sciences
lu.contributor.unit/LU/SPES/PLANT
lu.contributor.unitVice Chancellor's Office
pubs.finish-date2006-11-16en
pubs.notesPaper presented at the 68th New Zealand Grassland Association Conference, 14-16 November 2006, Dunedin.en
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/Research Management Office
pubs.organisational-group/LU/Research Management Office/PE20
pubs.organisational-group/LU/Research Management Office/QE18
pubs.organisational-group/LU/SPES
pubs.organisational-group/LU/SPES/PLANT
pubs.organisational-group/LU/Vice Chancellor's Office
pubs.publication-statusPublisheden
pubs.start-date2006-11-14en
lu.identifier.orcid0000-0003-4165-007X
lu.identifier.orcid0000-0002-5691-4915
lu.subtypeConference Paperen


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