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dc.contributor.authorMoir, James L.en
dc.contributor.authorCameron, Keith C.en
dc.contributor.authorDi, Hong J.en
dc.contributor.authorRoberts, A. H. C.en
dc.contributor.authorKuperus, W.en
dc.date.accessioned2010-09-03T02:13:00Z
dc.date.issued2003-12en
dc.identifier.citationMoir, J., Cameron, K., Di, H. J., Roberts, A., & Kuperus, W. (2003). The effects of urea and ammonium sulphate nitrate (ASN) on the production and quality of irrigated dairy pastures in Canterbury, New Zealand. In L. D. Currie & J. A. Hanly (Eds.), Tools for nutrient and pollutant management: Applications to agriculture and environmental quality: Proceedings of the 17th Annual Workshop held by the Fertilizer and Lime Research Centre, Massey University, in conjunction with the Biennial Conference of the Australasian Soil and Plant Analysis Council at Massey University, Palmerston North, New Zealand, 2-3 December 2003 (pp. 139-145). Palmerston North, New Zealand: Fertiliser and Lime Research Centre, Massey University.en
dc.identifier.issn0112-9902en
dc.identifier.urihttps://hdl.handle.net/10182/2497
dc.description.abstractThis paper examines the effects of two different forms of nitrogen (N) fertiliser, urea and ammonium sulphate nitrate (ASN) on the production and quality of spray irrigated dairy pastures in Canterbury. Pasture production and a wide range of pasture quality parameters were measured in a mowing trial of randomised design on the Lincoln University dairy farm. Treatments consisted of three fertiliser forms (urea, urea plus sulphur (S) and ASN) applied at two annual rates ofN (150 and 250 kg N ha⁻¹). Measurements included pasture dry matter (DM) yield, botanical composition, pasture N and S uptakes, 'standard' pasture quality measurements, such as carbohydrate and protein levels, and a detailed assessment of levels of individual proteins in the pasture. Under the conditions of this trial representing typical centre-pivot irrigation and high soil fertility, the total annual dry matter yield ranged from 15.9 (Control) to 19.4 (ASN 250) t DM ha⁻¹ and was strongly influenced by rate of N fertiliser application but not fertiliser type. ASN showed a small significant yield advantage (P < 0.05) over urea at the 150 N rate but not at the 250 N rate. Clover levels did not vary significantly with type or rate of fertiliser applied. Pasture quality, as measured by 'key' quality indicators was generally unaffected by fertiliser treatments throughout the season, although some differences in specific amino acid levels were detected. The implications of the impacts of N fertiliser use on pasture quality are discussed.en
dc.format.extent139-145en
dc.language.isoenen
dc.publisherFertilizer and Lime Research Centre, Massey Universityen
dc.relationThe original publication is available from - Fertilizer and Lime Research Centre, Massey University - http://hdl.handle.net/10182/2497en
dc.sourceBiennial Conference of the Australasian Soil and Plant Analysis Council - 17th Annual Workshopen
dc.subjectureaen
dc.subjectammonium sulphate nitrateen
dc.subjectdairy pastureen
dc.subjectfertiliseren
dc.subjectspray irrigationen
dc.subjectpasture qualityen
dc.titleThe effects of urea and ammonium sulphate nitrate (ASN) on the production and quality of irrigated dairy pastures in Canterbury, New Zealanden
dc.typeConference Contribution - Published
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
pubs.finish-date2003-12-03en
pubs.notesAlso published as a report on http://www.siddc.org.nz/files/NitrogenFertiliserRpt.pdfen
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/SOILS
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/QE18
pubs.publication-statusPublisheden
pubs.publisher-urlhttp://hdl.handle.net/10182/2497en
pubs.start-date2003-12-02en
lu.identifier.orcid0000-0002-7631-1636
lu.identifier.orcid0000-0002-6966-0299
lu.identifier.orcid0000-0001-6677-3901
lu.subtypeConference Paperen


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