Part 1 Introduction: aims of the report; scope of the topic; multi-disciplinary dimension of sustainable soil management; development policy status of sustainable soil management; relevance to Agenda 21. Part 2 Sustainable soil management: what is agricultural soil?; soil - a renewable resource within limits; impact of soil degradation on the global climate; specifics of tropical soils; ecological problems zones; the role of land in the national economy; land as a production factor in farming enterprises; raising output with sustainable methods. Part 3 Biological, physical and socio-economic causes of soil degradation: biophysical forms and causes of soil degradation; socio-economic factors in sustainable soil management; causes of failed projects in sustainable soil management. Part 4 Sustainable soil management - development approaches: creating conductive policies and structures in agriculture; approaches at household and farm level; research and extension; developing technologies for various ecological conditions; promotion of national executing agencies; evaluation of available technologies and potential development approaches.