Phone: +49 (0) 5542 607 20
||1975-2003: Professor of Agricultural Economics, Faculty of Ecological Agricultural Sciences, University of Kassel, Witzenhausen.
1987-2005: Managing Director German Institute for Tropical and Subtropical Agriculture (DITSL) GmbH, Witzenhausen.
||1956 - 1960: Apprenticeship training (2 years) for qualified farm labourer in Germany; Practical farm work in francophone Switzerland (9 months), France (3 months) and England (3 months): Agricultural College Osnabrück (Staatlich Geprüfter Landwirt).
1961 - 1964: Graduate studies in agriculture and agricultural economics at University of Göttingen; Graduation (Diplom-Landwirt).
1964 – 1967: Research Fellow in the “East Africa Programme” of the Ifo-Institute for Economic Research, Munich; Farming systems research in Tanzania (15 months); Ph.D. studies and doctoral degree in agriculture (Dr. sc. agr.); Research Fellow at University of Göttingen.
||Agricultural Economist at the Agricultural Training and Research Institute, Ifakara/Tanzania: Planning an conduct of extension programmes and training courses; Acting Project Manager (1968 – 70).
Senior Lecturer for Rural Development and Extension Methodology at the Department of Agricultural Economics of the University of Nairobi/Kenya (1970 – 74).
Chief Agronomist at Agrar-und Hydrotechnik Consulting GmbH, Essen; Planning of World Bank Projects for integrated rural development in Liberia (1974/75) .
Dean of the Faculty of Ecological Agricultural Sciences, University of Kassel, Witzenhausen (1980/81, 1993, 1998/99).
Organisation and Conduct of international seminars in African and Asian countries (e.g. Ghana, Egypt, Indonesia) on different aspects of Rural Development.
Organisation an Conduct of training programmes for the implementation of a dual system of agricultural education (Morocco, Indonesia)
||Studies for different Organisations of development cooperation on planning and evaluation of agricultural and rural development projects in various countries of Africa, the Near East, and Southeast Asia, e.g.: Liberia, Benin, Burkina Faso, Ivory Coast, Togo, Cameroon, Sudan, Ethiopia, Burundi, Tanzania, Kenya, Madagascar, Morocco, Egypt, Zimbabwe, Swaziland, Syria, Jordan, Indonesia, Thailand, Laos, Vietnam.