Behavior of heavy metals, nitrogen and phosphorus in soil,
Development of technologies for desalinization and
improvement of reclaimed tideland soil, Study on movement
of water and solute in soil and 15N/14N ratio in soil,
plant and water.

1965~ Instructor~Professor, Seoul National University
1985~1987 Dean, College of Agriculture, SNU
1986~1987 President, Asian Association of
Agricultural Colleges and Universities
1991~1993 Director, Institute of Agricultural
Science and Development
1996 Vice President, East and Southeast Asia
Federation of
Soil Science Societies
1996~ Member, Soil Contamination Research in Asia and
the Pacific
Network International Steering Committee
1996~ Member, Scientific Committee on Problems of the
Environment
1996 President, Korean Society of Soil Science and
Fertilizer
1997 President, Korean Society of Agricultural
Chemistry and
Biotechnology
1998~ President, Korean Association of Societies for
Agricultural Sciences

1985 Science Award, Korean Society of Soil Science and
Fertilizer
1998 Grand Science Award, College of Agriculture and
Life science, SNU