This experiment aimed to evaluate the growth characteristics and forage productivity of novel forage resources in order to cope with abnormal climatic conditions in Pungse-myeon, Cheonan City, Chungcheongnam-do, South Korea from 2024 to 2025. Italian ryegrass (IRG), Perennial ryegrass (PRG)+IRG mixtures and Meadow foxtail (MF)+IRG mixtures sown on 26 September 2024 grew vigorously before and after winter, and exhibited strong cold resistance, achieving a 100% overwintering rate. At harvest, plant length of IRG, PRG+IRG mixtures and MF+IRG mixtures reached approximately 118 cm. The heading dates of IRG and MF+IRG (2 May) were 8 days earlier than that of tall fescue. The dry matter yield (11.5 ton/ha) of IRG single pasture did not differ significantly from that of MF+IRG and PRG+IRG mixture, but was 29~30% higher than that of MF and PRG single pasture (p<0.001). The crude protein content of IRG and MF+IRG mixture was 7.0%, which was lower than that of MF (9.6%) and tall fescue (9.0%). The total digestible nutrient content of MF+IRG mixture was 63.2%, slightly lower than that of IRG but higher than that of tall fescue. In conclusion, these findings demonstrate that PRG+IRG and MF+IRG mixtures have strong potential as novel forage resources to mitigate cold damage of IRG under abnormal climatic conditions.

ABSTRACT
Ⅰ. 서론
Ⅱ. 재료 및 방법
    1. 토양 및 기상 환경
    2. 시험 초종 및 처리 내용
    3. 재배 방법
    4. 생육 및 수량 특성 조사
    5. 사료가치 분석
    6. 통계분석
Ⅲ. 결과 및 고찰
    1. 월동 전ㆍ후의 생육 특성
    2. 봄철 수확 전ㆍ후의 생육 특성
    3. 조사료 생산성 및 사료가치
Ⅳ. 요약
Ⅴ. 사사
Ⅵ. REFERENCES

• 최기준(서울대학교 그린바이오과학기술연구원) | Gi Jun Choi (Research Institute of Eco-friendly Livestock Science, GBST, SNU, Pyeongchang 25354, Republic of Korea)
• 김학진(서울대학교 그린바이오과학기술연구원) | Hak Jin Kim (Research Institute of Eco-friendly Livestock Science, GBST, SNU, Pyeongchang 25354, Republic of Korea)
• 이원진(서울대학교 그린바이오과학기술연구원) | Won Jin Lee (Research Institute of Eco-friendly Livestock Science, GBST, SNU, Pyeongchang 25354, Republic of Korea)
• 김종근(서울대학교 그린바이오과학기술연구원, 서울대학교 국제농업기술대학원) | Jong Geun Kim (Research Institute of Eco-friendly Livestock Science, GBST, SNU, Pyeongchang 25354, Republic of Korea, Graduate School of International Agricultural Technology, SNU, Pyeongchang 25354, Republic of Korea) Corresponding author
• Yan Fen Li(서울대학교 국제농업기술대학원)
• Xaysana Panyavong(서울대학교 국제농업기술대학원)
• Li Zhuang Wu(서울대학교 국제농업기술대학원)
• 양승학(국립축산과학원 조사료생산시스템과) | Seoung Hak Yang (Forage Production System Division, NIAS, RDA, Cheonan 31000, Republic of Korea)
• 정순우(천안시농업기술센터) | Soon Woo Joung (Cheonan Agricultural Technology Center, Cheonan 31233, Republic of Korea)