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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effects of Seeding and Organic Fertilizer Rates and Harvest time on Kenaf Yield and Feed Value

파종량, 유기질 비료 시용량 및 수확시기에 따른 케나프의 수량 및 사료가치

  • Nam, Cheol Hwan (Livestock Institute, Jeollanamdo Agricultural Research and Extension Services) ;
  • Kim, Ki Soo (Livestock Institute, Jeollanamdo Agricultural Research and Extension Services) ;
  • Park, Man Ho (Livestock Institute, Jeollanamdo Agricultural Research and Extension Services) ;
  • Kim, Won Ho (National Institute of Animal Science, RDA) ;
  • Ji, Hee Jung (National Institute of Animal Science, RDA) ;
  • Choi, Ki Chun (National Institute of Animal Science, RDA) ;
  • Sun, Sang Soo (Chonnam National Unversity, Department of Animal Science)
  • 남철환 (전라남도 농업기술원 축산연구소) ;
  • 김기수 (전라남도 농업기술원 축산연구소) ;
  • 박만호 (전라남도 농업기술원 축산연구소) ;
  • 김원호 (국립축산과학원) ;
  • 지희정 (국립축산과학원) ;
  • 최기춘 (국립축산과학원) ;
  • 선상수 (전남대학교 동물자원학과)
  • Received : 2018.01.25
  • Accepted : 2018.06.21
  • Published : 2018.06.30
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Abstract

This study was conducted in 2014 in the Gangjin area of Jeonnam province for the purpose of confirming the potential of Kenaf as an alternative feed crop of rice. The weather and soil conditions were favorable and there was no adverse effect on the growth of Kenaf. The amount of seeding was given at 10 kg, 15 kg and 20 kg. As the seeding volume increased, plant height and dry matter yield increased, and stem diameter and number of nodes decreased. The highest growth rate was observed between 75 and 90 days from the date of planting(p<0.05). As the growth progressed, stem rate increased and leaf rate decreased(p<0.05). Increased amount of seeding and growth resulted in decreased CP and TDN and increased ADF and NDF, which resulted in the decreased economic value of Kenaf as a feed crop. The result of increasing the use of organic fertilizer to 20 kg and 30 kg was similar to increasing the amount of seeding. As organic fertilizer usage increased, dry matter yield and growth rate improved(p<0.05).

본 시험은 여름철 논에서 사료용 케나프의 파종량, 유기질 비료 시용량 및 수확시기 등 적정 재배 방법을 확립하기 위해 2014년에 전남 강진 지역 논에서 실시하였다. 시험구는 파종량이 ha당 10, 15, 20 kg 등 3수준 및 수확 시기가 파종 후 60일, 75일, 90일 등 3수준과 동일한 파종량에 유기질 비료 시용량이 20톤, 30톤 등 2수준으로 하였고, 시험구는 분할구 배치법 3반복으로 하였다. 케나프의 파종량을 ha당 10 kg에서 20 kg까지 늘림에 따라 초장이 커지고, 수량이 증가되었다. 파종량과 관계없이 수확 시기가 60일에서 90일까지 늦춰질수록 계속 성장하여 초장은 10.1~26.0% 수량은 18.8~30.0% 증가되었고, 파종 후 75일에서 90일 사이 증가 폭이 62.3~68.9%로 가장 컸다. 그러나 수량이 증가함에 따라 조단백질과 TDN 값은 감소되고, ADF와 NDF는 증가되어 사료가 치가 감소되었다. 유기질 비료를 ha당 20톤에서 30톤으로 증가하여 시비함에 따라 평균 15.3% 수량이 증가되었다. 결과적으로 케나프 재배시 ha당 가축분퇴비 30톤을 시비하고, 종자 20 kg를 파종하며, 생육 90일에 수확하는 것이 가장 높은 수량을 얻을 수 있었다.

Keywords

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