1. Planning and Development Department, Nissan Chemical Corporation, 2-5-1 Nihonbashi, Chuo-ku, Tokyo 103-6119, Japan
2. Planning and Development, Agricultural Chemical Division, Nissan Chemical Corporation, 2-5-1 Nihonbashi, Chuo-ku, Tokyo 103-6119, Japan
3. Biological Research Laboratories, Nissan Chemical Corporation, 1470 Shiraoka, Shiraoka-shi, Saitama 349-0294, Japan