Newcastle University

I have been involved in a wide range of research projects connected with the study of nutrient cycling in soils and with the environmental impact of farming systems. At the smallest scale I have used isotope dilution techniques to investigate mineralisation, immobilisation and nitrification processes. The understanding gained has been used to develop modelling approaches to predict soil nutrient cycling at soil, field and farm scale and to guide fertiliser recommendation systems. I have also maintained a strong link to organic farming and carried out some research into nutrient cycling (N, P, K) in organic farming systems