He joined NSW Agriculture* in 1994 as a project officer to investigate the effects of zero-tillage and pulse legume rotations on soil organic matter dynamics in northern NSW cropping systems, and in northern Pakistan.

Subsequent research areas have included: measuring nitrogen fixation in pulse crops; emerging issues for crop nutrition for high-yielding cropping systems; management of subsoil constraints to crop production; effects of agricultural inputs on soil biology; understanding risk factors affecting nitrogen volatilisation from local soils; and soil health training for farmers; managing nitrous oxide emissions from dryland and irrigated cropping; and improving fertiliser nitrogen use efficiency in irrigated cotton.

Graeme has over 20 years scientific research experience in Australia, plus significant overseas project experience in Pakistan and Nepal. Graeme has written or contributed to many scientific journal papers, conference papers, magazine articles, workshop training materials and project results books.

*NSW Department of Primary Industries was formed on July 1, 2004 through an amalgamation of NSW Agriculture, NSW Fisheries, State Forests of NSW, and the NSW Department of Mineral Resources.