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dc.contributor.authorMoir, James L.en
dc.contributor.authorCameron, Keith C.en
dc.contributor.authorDi, Hong J.en
dc.identifier.citationMoir, J., Cameron, K., & Di, H. (2016). Potential pasture nitrogen concentrations and uptake from autumn or spring applied cow urine and DCD under field conditions. Plants, 5(2), 26. doi:10.3390/plants5020026en
dc.description.abstractNitrogen (N) cycling and losses in grazed grassland are strongly driven by urine N deposition by grazing ruminants. The objective of this study was to quantify pasture N concentrations, yield and N uptake following autumn and spring deposition of cow urine and the effects of fine particle suspension (FPS) dicyandiamide (DCD). A field plot study was conducted on the Lincoln University dairy farm, Canterbury, New Zealand from May 2003 to May 2005. FPS DCD was applied to grazed pasture plots at 10 kg· ha⁻¹ in autumn and spring in addition to applied cow urine at a N loading rate of 1000 kg· N· ha⁻¹, with non-urine control plots. Pasture N ranged between 1.9 and 4.8[%] with higher concentrations from urine. Results indicated that urine consistently increased N concentrations for around 220 days post deposition (mid December/early summer) at which point concentrations dropped to background levels. In urine patches, pasture yield and annual N uptake were dramatically increased on average by 51[%] for autumn and 28[%] for spring applied urine, in both years, when DCD was applied. This field experiment provides strong evidence that annual pasture N uptake is more strongly influenced by high urine N deposition than pasture N concentrations. FPS DCD has the potential to result in very high N uptake in urine patches, even when they are autumn deposited.en
dc.description.sponsorshipThe authors wish to thank Ravensdown Fertiliser Co-operative Ltd., the Pastoral Greenhouse Gas Research Consortium (PGGRC) for funding this research.en
dc.relationThe original publication is available from - MDPI -
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International*
dc.subjectplant nitrogenen
dc.subjectsoil nitrogenen
dc.subjectnitrification inhibitoren
dc.subjectdicyandiamide (DCD)en
dc.subjectgrazed pastureen
dc.titlePotential pasture nitrogen concentrations and uptake from autumn or spring applied cow urine and DCD under field conditionsen
dc.typeJournal Article
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
dc.subject.anzsrc0701 Agriculture, Land and Farm Managementen
dc.subject.anzsrc079902 Fertilisers and Agrochemicals (incl. Application)en
dc.subject.anzsrc0703 Crop and Pasture Productionen
pubs.notesDate of acceptance: 6 June 2016 Article number: 26en
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

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