AgResearch Ltd (AgResearch), is New Zealand's leading pastoral agriculture research and development organization. Better managing nitrogen to meet production and environmental goals is a high priority for AgResearch. AgResearch highly values international collaboration and recognizes the benefits of international harmonization of methods, practices and tools targeting N use efficiency. AgResarch will contribute to the development of on-farm and catchment indicators and methods to quantify N utilization, identify sources of N losses, quantify losses and develop strategies to minimize the resulting environmental impacts.