Researchers at the University of Queensland have worked on research projects in the PNG Highlands since 2005. These projects were, and are, applied research to manage soil fertility in sweetpotato-based cropping systems in the Highlands. They were funded by the Australian Centre for International Agricultural Research. Our key collaborator was PNG’s National Agricultural Research Institute. Although the projects were in the field of Soil Science, specifically soil fertility management, our approach has always been multidisciplinary.