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Production, profit and nitrogen flows in irrigated dairy systems representing different industry development pathways: The Pastoral 21 experience in Canterbury

Chapman, D. F.; Dalley, D. E.; Edwards, Grant; Cameron, Keith C.; Malcolm, B. J.; Clement, A.; Romera, A. J.; Pinxterhuis, I. B.; Beukes, P. C.; Di, Hong J.; Bryant, Racheal H.; Curtis, J. (Taylor & Francis on behalf of the Royal Society of New Zealand, 2020-08-26)

Future development pathways for irrigated dairy farms in Canterbury operating under stricter nitrogen (N) loss limits were compared in two farmlets over four years. One represented the traditional pathway of intensification ...

The effect of four different pasture species compositions on nitrate leaching losses under high N loading

Malcolm, B. J.; Cameron, Keith C.; Di, Hong J.; Edwards, Grant; Moir, James L. (Wiley on behalf of the British Society of Soil Science, 2014-03)

Nitrate (NO₃⁻) leaching can cause elevated concentrations of NO₃⁻-N in water, which can have adverse impacts on water quality and human health. In grazed pasture systems, most of the NO₃⁻-N leaching occurs beneath animal ...