Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Growth Characteristics and Yields of Native Summer Forage Crops as Affected by Seeding Rate in No-Tillage Paddy Fields

무경운 논에서 하계 자생사료작물의 파종량이 생육특성 및 수량에 미치는 영향

  • Jeong Sung Jung (Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration) ;
  • Bo Ram Choi (Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration) ;
  • Se Young Lee (Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration) ;
  • Mirae Oh (Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration) ;
  • Hyung Soo Park (Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration) ;
  • Ki Choon Choi (Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration)
  • Received : 2023.03.18
  • Accepted : 2023.03.27
  • Published : 2023.03.31
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Abstract

This experiment was carried out to determine effects of seed rate of native grasses, called native summer forage crops (NSFC), on their growth characteristics and yields in no-tillage paddy fields in central provinces. NSFC cultivation was performed according to the agricultural guidelines of the Rural Development Administration (RDA) during 2020 to 2022. Echinochloa crusgalli 'Jeju native', Setaria viridis 'Korean native type', Digitaria sanguinalis 'Korean native type') were sown by various seed rate in the experimental field (3m × 4m plot) of Department of Animal Resources Development, Seonghwan-eup, Cheonan, Korea in late-May or early-June for 3 years and harvested in middle-September. Dry matter yields (DMY) in Echinochloa crusgalli and Setaria viridis increased as increasing seed rate. DMY in 40 kg ha-1 of Echinochloa crusgalli was the highest and DMY in 60 kg ha-1 of Setaria viridis was the highest. However, All treatments of Digitaria sanguinalis showed similar DMY. Yields of NSFC were the order of Echinochloa crusgalli (9,681~11,092 kg ha-1) > Digitaria sanguinalis (8,311~9,023 kg ha-1) >etaria viridis (3,145~4,749 kg ha-1). The contents of crude protein in NSFC were the order of Digitaria sanguinalis > Echinochloa crusgalli > Setaria viridis. The contents of ADF and NDF in NSFC were the order of Echinochloa crusgalli > Digitaria sanguinalis > Setaria viridis. As shown in above results, we suggest that introduction of NSFC is one of the most important skills in order to stably increase yields of forage crops for utilization of the double cropping system in no-tillage paddy fields.

본 시험은 하계자생작물인 사료 피 '제주피', 강아지풀(국내 생태형), 바랭이(국내 생태형)의 파종량에 따른 생육특성 및 생산성을 조사하기 위해 충청남도 천안시 소재 국립축산과학원 축산자원개발부 초지사료포장 무경운 논에서 2020년 부터 2022년 까지 3년 동안 수행하였다. 사료 피와 강아지풀은 파종량이 증가함에 따라 증가하는 경향을 보였으며 사료 피는 40 kg ha-1 처리에서, 강아지풀은 60 kg ha-1 처리에서 최대 수량을 보였다. 그러나 바랭이는 4-16 kg ha-1 처리에서는 비슷한 수량을 보였으며 60 kg ha-1 처리에서 최대 수량을 보였다. 그리고 건물수량은 사료 피(9,681~11,092 kg ha-1) > 바랭이(8,311~9,023 kg ha-1) > 강아지풀(3,145~4,749 kg ha-1) 순으로 나타났다. 하계자생작물인 사료 피, 강아지풀, 바랭이의 파종량에 따른 단백질함량은 바랭이 > 사료 피 > 강아지풀 순으로 ADF와 NDF 함량은 사료 피 > 바랭이 > 강아지풀 나타났으며 통계적인 차이는 보이지 않았다. 이상의 결과에서 제시한 바와 같이 논을 이용한 이모작 작부체계에서 안정적으로 조사료를 생산하기 위해서는 자생하계사료작물 도입은 매우 중요할 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 연구사업(연구과제명 : 논에서 사료작물 및 자생 사료자원을 이용한 작부체계 기술 개발, 과제번호 : PJ01350601) 지원에 의해 연구되었다.

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