Project Leader - The Long Term Experiments

Sustainable Agriculture Sciences


Andy joined Rothamsted Research in 1986. His work has focused on the effects of agricultural management practices on the efficiency of N fertiliser, N losses to the environment and soil N dynamics. Much work has used stable isotopes to follow the fate of N derived from fertiliser and crop residues in the crop/soil system. In 2000, the University of Reading awarded him a PhD for his work on the effects of cover crops on soil N transformations and losses from arable land. In 2002, he spent several months at the University of Western Australia working on the effects of herbaceous perennials and short-term rotational tree cropping on labile organic matter fractions in the soils of Western Australia. More recently, his work has focused on the impact of land use and management on soluble organic matter in British soils and N losses from arable land. He is currently PI of the Rothamsted Long-Term Experiments, including Broadbalk and Park Grass. These experiments focus on the long-term effects of fertilisers, manures, lime and crop rotations on crop production, nutrient losses and soil fertility. He has also led Rothamsted's contribution to other projects, including the EU project on experimentation and ecosystem research (EXPEER;




    +44 (0) 1582 938 479


      Rothamsted Research, Harpenden, AL5 2JQ




        PhD project

        • Understanding the relative impacts of climate change on the Rothamsted Long-term Experiments


        • 1986 - BSc (Hons) Agricultural Botany, Aberystwyth University, Wales
        • 2000 - PhD in Soil Science, The University of Reading, UK


        • Invited speaker at a review of factors affecting N losses to water from UK arable agriculture at the International hearing of the technical basis for the coming Danish river basin management plans and targeted regulation in Aarhus, Denmark, November 18th, 2014
        • Invited to participate as an international (guest) reviewer in the BonaRes proposal evaluation meeting Soil as a Natural Resource for the Bioeconomy BonaRes held in Berlin on 8-9 July 2014
        • Speaker at the SRUC conference on Sustainable Intensification: The Pathway to Low Carbon Farming, Edinburgh, Sept 25-27, 2013. Macdonald A, Powlson D, Whitmore A and Goulding K (2013) Managing soil C to mitigate climate change and enhance soil quality