ABSTRACT
A) The cost effectiveness of reducing diffuse nitrogen discharges from dairy farming into the upper Waikato River in New Zealand along with the environmental benefi ts that accrued.
B) An economic analysis regarding reduction of diffuse discharges of nitrogen, phosphate, microbes, and sediment into the Aparima River Catchment in the Southland Region of New Zealand. This second study is included solely as a means of discussing the ability of farmers to pay for reducing discharges.
