This study was carried out to classify Korean soybean varieties based maturity group. One hundred (100) domestic soybean varieties ( 56 for fermentation, 26 for sprouting, 17 for mixed with rice) were used and seeding date was scheduled at April 30. This experiment carried out at Yeongnam Agricultural Research Institute, NICE situated at Miryang from 2005 to 2006. Classification of maturity group in 100 soybeans was followed by Kweon et al's method (1974) The main difference between this experiment and that of Kweon et al's method (1974) were the planting region and planting date. This experiment was conducted on April 30 at Miryang while Kweon et al. was conducted on May 23 in Seoul. Results of maturity grouping of Korean soybean varieties showed that Keunol, which was represented among 3 varieties, belonged to Group 0, Seonnok and Danmi in GroupⅡ, Shinrok in GroupⅢ, Seonyu, represented by 17 cultivars, in GroupⅣ, Taekwang, having 44 cultivars in GroupⅤ, Daewon, represented by 25 cultivars in GroupⅥ, and Kwangdu and Keumdu in GroupⅦ.

• Sang-Ouk Shin(Yeongnam Agricultural Research Institute(YARI), Nat'l Institute of Crop Science, RDA) Corresponding Author
• Tae-Joung Ha(Yeongnam Agricultural Research Institute(YARI), Nat'l Institute of Crop Science, RDA)
• Seong-Hyu Shin(Yeongnam Agricultural Research Institute(YARI), Nat'l Institute of Crop Science, RDA)
• Sea-Gyu Lim(Yeongnam Agricultural Research Institute(YARI), Nat'l Institute of Crop Science, RDA)
• Kyung-Jin Choi(Yeongnam Agricultural Research Institute(YARI), Nat'l Institute of Crop Science, RDA)
• In-Yeul Baek(Yeongnam Agricultural Research Institute(YARI), Nat'l Institute of Crop Science, RDA)
• Keum-Yong Park(Yeongnam Agricultural Research Institute(YARI), Nat'l Institute of Crop Science, RDA)
• Sang-Chul Lee(College of Agriculture & Life Science, Kyungpook National University)