Ekanayake, D., J. Owens, S. Hodge, J. Trethewey, R. Roten, M. Westerschulte, S. Belin, A. Werner, and K. Cameron. “Soil Inorganic Nitrogen in Spatially Distinct Areas Within a Commercial Dairy Farm in Canterbury, New Zealand”. Journal of New Zealand Grasslands, vol. 79, Jan. 2017, pp. 83-88, doi:10.33584/jnzg.2017.79.545.