Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Growth, Productivity and Forage Values of Winter Cereal Crops at Paddy Fields in the Southern Region of Korea

남부지역 논에서 동계 맥류의 생육특성, 생산성 및 사료가치

  • Seo Young Oh (Paddy Crop Research Division, Department of Southern Area Crop Science, National Institute of Crop Science) ;
  • Jong Ho Seo (Paddy Crop Research Division, Department of Southern Area Crop Science, National Institute of Crop Science) ;
  • Jisu Choi (Paddy Crop Research Division, Department of Southern Area Crop Science, National Institute of Crop Science) ;
  • Tae Hee Kim (Paddy Crop Research Division, Department of Southern Area Crop Science, National Institute of Crop Science) ;
  • Seong Hwan Oh (Paddy Crop Research Division, Department of Southern Area Crop Science, National Institute of Crop Science)
  • 오서영 (국립식량과학원 남부작물부 논이용작물과) ;
  • 서종호 (국립식량과학원 남부작물부 논이용작물과) ;
  • 최지수 (국립식량과학원 남부작물부 논이용작물과) ;
  • 김태희 (국립식량과학원 남부작물부 논이용작물과) ;
  • 오성환 (국립식량과학원 남부작물부 논이용작물과)
  • Received : 2023.04.11
  • Accepted : 2023.06.22
  • Published : 2023.06.30
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Abstract

In order to select high-quality winter cereal crops with high yield and to increase self-sufficiency rate of forage, their growth, yield, and feeding value of several cereal crops cultivated in winter were investigated in the paddy field of the southern region. Four wheat cultivars and green barley headed in early and mid-April, while oat and Italian ryegrass headed in early May. Fresh forage yields of wheats, green barley, and oat were significantly higher than that of Italian ryegrass, and dry forage yields of wheats and green barley were significantly higher than those of not only Italian ryegrass but also oat. In particular, the yield of a wheat cultivar 'Cheongwoo' was the highest. Mineral contents of wheat forages, even though low, were in the range 27.8~33.7mg·g-1 DW suitable for feeding cattle and young female cows. Crude protein content of a wheat cultivar 'Cheongwoo' was high up to 7.6%, similarly to 7.0% requiring for feeding cattle. Feeding values such as total digestible nutrients (TDN) and relative feed value (RFV) of wheats and green barley were superior to those of oat and Italian ryegrass. In addition, dry matter rates of 4 wheat cultivars and green barley were in the range 30~40%, indicating that wheat cultivars and green barley could be used for various feeding purposes such as green or dried forage, and silage. Based on these results, wheat cultivars including 'Cheongwoo' and green barley could be encouraged to be cultivated in paddy fields, as high-quality winter forage crops with high yield.

조사료 생산성이 높고 양질의 동계 사료작물을 선택하여 자급률을 높이기 위해 남부지역 논에서 겨울철에 수종의 맥류를 재배하여 생육, 생산성, 사료가치 등을 평가하였다. 출수는 밀과 청보리가 4월 초중순에, 귀리와 이탈리안 라이그라스는 5월 상순에 이루어졌다. 생초 수량은 밀, 청보리, 귀리가 이탈리안 라이그라스에 비해 유의하게 높았고, 건물수량은 밀과 청보리가 이탈리안 라이그라스는 물론이고 귀리보다도 유의하게 높았다. 특히, 청우밀의 건물수량이 가장 높았다. 그리고 밀의 무기질 함량은 귀리, 청보리, 이탈리안 라이그라스에 비해 낮았지만, 소와 어린 암소가 필요로 하는 적정 범위에 있었다. 밀의 조단백질 함량도 귀리에 비해서는 낮았지만 청우밀의 경우는 7.6%로 반추위 동물의 요구량인 7.0%를 충족하였다. 사료가치를 나타내는 측도인 가소화양분총량(TDN)과 상대적 사료가치(RFV)도 밀과 청보리가 귀리와 이탈리안 라이그라스에 비해 우수하였다. 또한, 밀 4품종과 청보리는 출수 후 30일에 건물률이 30~40% 범위여서 청예사료(풋베기), 건초, 사일리지(담근먹이) 등 여러 용도로 활용하는데 유리한 것으로 보인다. 이상의 결과를 토대로 밀과 청보리는 겨울철에 논에서 재배를 장려할 만한 사료작물이 될 것으로 사료되며, 특히 청우밀은 조단백질 함량도 높아서 양질의 조사료로 이용이 가능할 것으로 보인다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 어젠다사업(과제명: 논이용 사료작물 생산 최적 작부체계 개발, 과제번호: PJ014381032022)의 지원에 의해 이루어진 결과로 이에 감사드립니다.

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