Reporting and nitrogen fertilizer application: dairy sector data

According to the current regulations of the National Policy Statement for Freshwater, the cap on synthetic nitrogen fertilizer is 190 kg per hectare of pasture per year. This restriction was introduced to protect water quality. To submit reports, a special N-cap tool is used, developed by Te Uru Kahika, the organisation representing the country's regional councils. Clients of Ravensdown and Ballance Agri-Nutrients, as well as Fonterra suppliers, can transmit data through their respective structures. At the same time, the N-cap rule may be repealed during the planned government reforms of the Resource Management Act.

Waikato Federated Farmers representative Matthew Zonderop noted that farmers are exercising financial prudence when determining application rates. According to him, it is economically unviable to use more than 100–110 kg of nitrogen per hectare annually due to pasture requirements and the rise in fertilizer prices against the backdrop of the conflict in the Middle East. Bay of Plenty Federated Farmers representative Margaret Wright pointed out the issue of duplicated reporting to dairy processing companies, regional councils, and Statistics NZ, which require different data formats.

According to the Bay of Plenty Regional Council, compliance monitoring has been limited due to the reallocation of resources to other environmental tasks. Nevertheless, among the region's farmers who submitted reports, nearly 100% compliance with the 190 kg per hectare limit was recorded. The Waikato Regional Council reported that for the 2024/25 reporting period, 60% of dairy farmers required to report have already fulfilled this requirement.

DairyNZ advocates for a transition to farm-level freshwater management plans if they deliver better environmental outcomes. DairyNZ representative Roger Lincoln emphasized that over the past decade, farmers have reduced fertilizer application by 30%, improved irrigation systems, and implemented other environmental practices.