This study estimated the effect of sowing and harvesting dates on dry matter (DM) yield and feed value of forage oats at Sancheong, Korea. The forage oats (Darkhorse vs. Highspeed) were used in this experiment. The experimental main plots consisted of the different sowing and harvesting dates at 2 seasons as follows: spring oats of sowing (February 25, March 3 and March 13) and harvesting (May 27, June 6 and June 16); and fall oats of sowing (August 15, August 25 and September 4) and harvesting (October 15, October 25 and November 4). On spring oats, Highspeed sown on March 3 and then harvesting on June 6 had the highest (p<0.05) plant length and DM yield. Crude protein content decreased (p<0.05) in seed of the delayed-harvesting Highspeed. On fall oats, plant length and DM yield with the delayed-harvesting date increased (p<0.05), while crude protein content of the delayed-harvesting Highspeed decreased (p<0.05). This study concluded that the spring oat sown in early March and then harvesting in early June was recommended to increase dry matter and feed value although the fall oat sown in end August and then harvesting in early November was recommended for fall period.

ABSTRACT
 Ⅰ. 서 론
 Ⅱ. 재료 및 방법
  1. 재배방법
  2. 조사방법
  3. 통계처리
 Ⅲ. 결과 및 고찰
  1. 춘파시험
  2. 추파시험
 Ⅳ. 요 약
 Ⅵ. REFERENCES

• 한옥규(국립식량과학원 중부작물부) | Ouk-Kyu Han (Central Area Crop Breeding Division, National Institute of Crop Science, RDA)
• 구자환(국립식량과학원 중부작물부) | Ja-Hwan Ku (Central Area Crop Breeding Division, National Institute of Crop Science, RDA)
• 민형규(산청군 농업기술센터) | Hyeong-Gyu Min (Sancheong Agricultural Technology Center)
• 이혁준(경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원)) | Hyuk-Jun Lee (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University)
• 주영호(경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원)) | Young-Ho Joo (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University)
• 이성신(경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원)) | Seong-Shin Lee (Division of Applied Life Science (BK21Plus, Institute of Agricultural and Life Science), Gyeongsang National University)
• 오정식(산청군 농업기술센터) | Jung-Sik Oh (Sancheong Agricultural Technology Center)
• 정기한(경상남도청 축산과) | Ki-Han Jung (Livestock Division, Gyeongnam Provincial Government)
• 김삼철(경상대학교 응용생명과학부(BK21Plus, 농업생명과학연구원)) | Sam-Churl Kim (Livestock Division, Gyeongnam Provincial Government) Corresponding author