- 1987/04 - - 高知大学農学部助教授
- 1987/04 - - Associate Professor, Faculty of Agriculture,
- 1984/04 - 1987/03 Kochi University
- 1984/04 - 1987/03 Research Associate, Faculty of Agriculture,
- 1978/10 - 1984/03 Ministry of Agriculture, Forestry and Fisheries
- 1978/10 - 1984/03 Researcher, Principal Research officer,
- Kochi University
- Forestry and Fisheries
- ministry of Agriculture,
- Agricultural Engineering station,
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