This experiment was carried out to evaluate the effect of natural drying methods on the moisture content and germination of Italian ryegrass seed in Jicheon reclaimed land, Jangheung, Korea, from 2023 to 2024. The natural drying methods tested included seed spread thicknesses of 2.5, 5.0 and 7.5 cm; seed reversal frequencies of 1, 2 and 3 times per day; and two reversal methods: seed-only reversal and complete mixing of seed with a dry mat. The thinner seed spread thickness significantly accelerated moisture content reduction(p<0.001). However, the reduction in moisture contents due to the number and method of seed reversal was minimal, approximately 1%. Seeds initially having around 48.9% moisture content required 2, 4 and 5 days to reach a moisture content of 14% when dried at spread thickness of 2.5, 5.0 and 7.5 cm, respectively. Seeds with an initial moisture content of 23-26% required 1 to 2 days to reach 14% moisture content while maintaining approximately 80% germination rate under the tested natural drying methods. When seeds with an initial moisture content of 48.9% were dried at a spread thickness of 2.5 cm, the germination rate was 74.6%, which was significantly lower than the 83.8 and 81.6% germination rates observed for seeds dried at 5.0 and 7.5 cm thickness, respectively(p<0.002). These results suggest that for faster drying and higher-quality Italian ryegrass seed, harvesting at 30% seed moisture content, utilizing the cultivation field as a seed drying place, and applying a seed spread thickness of 2.5 to 5.0 cm are optimal practices.

ABSTRACT
Ⅰ. 서론
Ⅱ. 재료 및 방법
    1. 재배지역
    2. 시험 조건 및 처리내용
    3. 수분함량 및 발아율
    4. 통계처리
Ⅲ. 결과 및 고찰
    1. 종자의 수분함량
    2. 종자의 발아율
Ⅳ. 요약
Ⅴ. 사사
Ⅵ. REFERENCES

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