Acknowledgements

This applied research on DBs was initiated, and is governed by, the Phosphorus Mitigation Project Inc. We acknowledge the following funding agencies: Ministry of Primary Industries Sustainable Farming Fund, National Institute of Water and Atmospheric Research’s Strategic Science Investment Fund, Dairy NZ, Bay of Plenty, Environment Canterbury, Waikato and Horizons Regional Councils, Balance AgriNutrients Ltd, Beef and Lamb NZ, and Deer Industry NZ. The funders had no involvement in study design; in the collection, analysis and interpretation of data; in the writing of the report; and in the decision to submit the article for publication. Thank you to Wayne McGarth and Andrew Starr at NIWA for their instrumentation assistance.