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Nitrogen and phosphorus concentrations and fluxes in drainage from pasture, winter forage crop and native bush sites in the West Matukituki Valley

Publication date:  June 2017
Publication reference number:  CR 278

Otago Regional Council (ORC) requested a programme of experimentation that would deliver quantitative measurements of nitrogen (N) and phosphorus (P) concentrations and fluxes in leachate reported for pasture, forage crop and native bush sites in the West Matukituki Valley, located west of Lake Wanaka.

These measurements were made from December 2014 until June 2016 and have been acquired to improve our knowledge of nutrient cycling and losses from sheep-beef farms within high rainfall environments.

This report describes the experimental approach and documents the results obtained until 2016.