This experiment was carried out to compare the growth characteristics and productivity between sudangrass and sorghum-sudangrass hybrid under the same cultivation condition in Cheonan and Kimje of Korea from 2010 to 2011. Sudangrass hybrids(Choice, Sunstar and Piper) and sorghum-sudangrass hybrids(SX-17, Jumbo and Revolution) were planted 5th May in Cheonan and 7th May in Kimje. Heading date of sudangrass hybrids was 12th July which was about 2 week fast more than that of sorghum-sudangrass hybrids. Stem diameter of sudangrass hybrids was about 6mm which was about 5 mm smaller than that of sorghum-sudangrass hybrids. Disease resistance of sudangrass hybrid, “Choice” was similar to that of sorghum-sudangrass hybrids. Dry matter yield of “Choice” was 15ton/ha which was 10% less than that for sorghum-sudangrass hybrids(SX-17). Feed value of “Choice” was similar or slightly lower than that of sorghum-sudangrass. For increasing the productivity in forage cropping systems all around year, sudangrass hybrid is recommended for prolong by the middle ten day of May in the harvesting time of italian ryegrass

• 최기준(농촌진흥청 국립축산과학원) | Gi Jun Choi
• 이상훈(농촌진흥청 국립축산과학원) | Sang-Hoon Lee
• 이기원(농촌진흥청 국립축산과학원) | Ki-won Lee
• 지희정(농촌진흥청 국립축산과학원) | Hee Chung Ji
• 황태영(농촌진흥청 국립축산과학원) | Tae-Young Hwang
• 김기용(농촌진흥청 국립축산과학원) | Ki-Yong Kim Corresponding author