This experiment was carried out to evaluate the characteristic and productivity of forage corn varieties sown at the last ten days of May at Cheonan of Korea on 2017 and 2018. Forage corn varieties sown on 24th May 2017 and 25th May 2018 were emerged in 5th and 1st June, respectively. Silking date of forage corns was different among varieties(p<0.05). Stem length of forage corns was not different among the varieties, except Kwangpyeongok(KPA) and Nero IT. Stem diameter of forage corns was not different amaong the varieties. Outbreak rate of black streaked dwarf virus was lower than 3% in all varieties. Total digestible nutrient(TDN) yield was different among corn varieties(p<0.05), which was higher in P32P75, followed by P2088, P31N27, and KPA. The TDN yield of varieties had direct correlation with stem length, stem diameter and ear yield, respectively(p<0.01). Average of TDN in all varieties was 69.8%. These results suggested that forage corn variety with late-seeding adaptability is more important for increasing the productivity of forage corn If harvesting of winter forage crops have to be finished in the middle ten days of May in middle region of Korea.

ABSTRACT
 Ⅰ. 서 론
 Ⅱ. 재료 및 방법
 Ⅲ. 결과 및 고찰
  1. 생육특성
  2. 수량성
  3. 생육특성과 수량성과의 상관
  4. 사료가치
 Ⅳ. 적요
 Ⅴ. 사사
 Ⅵ. REFERENCE

• 최기준(국립축산과학원) | Gi Jun Choi (National Institute of Animal Science, RDA)
• 정종성(국립축산과학원) | Jeong Sung Jung (National Institute of Animal Science, RDA)
• 최기춘(국립축산과학원) | Ki Choon Choi (National Institute of Animal Science, RDA)
• 황태영(농촌진흥청 기술협력국) | Tae Young Hwang (Rural Development Administration)
• 김지혜(국립축산과학원) | Ji Hye Kim (National Institute of Animal Science, RDA)
• 김원호(국립축산과학원) | Won Ho Kim (National Institute of Animal Science, RDA)
• 이은자(국립축산과학원) | Eun Ja Lee (National Institute of Animal Science, RDA)
• 성경일(강원대학교) | Kyung Il Sung (Dept. of Animal Life Science, Kangwon National University)
• 이기원(국립축산과학원) | Ki-Won Lee (National Institute of Animal Science, RDA) Corresponding author