Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effects of Seeding Time on Growth and Nutrient Contribution of Ryegrass and Hairy Vetch

호밀과 헤어리베치의 파종시기가 녹비작물의 생육과 양분 공급량에 미치는 영향

  • Lim, Kyeong-Ho (Jeollanam-do Agricultural Research & Extension Services) ;
  • Choi, Hyun-Sug (Organic Agriculture Division, National Academy of Agricultural Science) ;
  • Kim, Hyun-Ji (Jeollanam-do Agricultural Research & Extension Services) ;
  • Kim, Byeong-Sam (Jeollanam-do Agricultural Research & Extension Services) ;
  • Kim, Do-Ik (Jeollanam-do Agricultural Research & Extension Services) ;
  • Kim, Seon-Gon (Jeollanam-do Agricultural Research & Extension Services) ;
  • Kim, Jong-Sun (Jeollanam-do Agricultural Research & Extension Services) ;
  • Kim, Wol-Soo (Department of Horticulture, Chonnam National University) ;
  • Lee, Youn (Organic Agriculture Division, National Academy of Agricultural Science)
  • Received : 2011.04.07
  • Accepted : 2011.05.16
  • Published : 2011.06.30
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Abstract

This study was conducted to evaluate the effects of seeding time of ryegrass+hairy vetch on the nutrient contribution and growth of the crops. in order to develop utilization of cover crops as an organic nutrient source in a pear orchard. The study was conducted at a diligent farmer in Boseong in Chonnam, and the both ryegrass and hairy vetch applied on 1) 27 September, 2) 15 October, 3) 8 November, and 4) 10 December of 2008 as a cover crop treatment. Sod culture was refereed as a control. Growth of ryegrass was not affected by seeding time, but hairy vetch had fewer leaf and shoot number as seeding time advanced from September to December, and the similar trend was observed for the dry weight of the crops by seeding time. Seeding of cover crop on September was 2.6 times greater dry weight than those of the sod culture (362 kg/10a). Higher N concentration in cover crops occurred on early seeding time, and estimated N contribution from the cover crops was 16.9 kg/10a, which was 2.6 times greater than those of sod culture. $P_2O_5$ production from the cover crops was the greatest on seeding of October, and $K_2O$ production increased at earlier seeding time.

본 연구는 유기재배 배 과수원 시비에 있어서 화학 비료 대체를 위한 녹비작물 재배 이용기술 개발을 확립하고자 호밀과 헤어리베치의 파종시기에 따라 녹비작물의 생육과 양분 공급량에 미치는 영향을 구명하기 위해서 수행되었다. 녹비작물의 파종시기는 2008년 9월 27일, 10월 15일, 11월 8일, 12월 10일로 나누어서 전남 보성의 배 과수원 독농가에 처리하였다. 관행 방임 초생 재배구는 대조구로 선정하였다. 호밀의 생육은 파종시기에 따라 별다른 차이 없이 비슷한 경향이었으나 헤어리베치는 파종 시기가 늦을수록 초장이 짧아지고 엽수와 줄기수가 감소하였고 건물중에도 그러한 비슷한 경향이 관찰되었다. 9월 하순 녹비처리는 관행 방임 초생 재배구에서 생산한 362kg/10a의 건물 중 보다 2.6배 높았다. 파종시기별 전질소 농도는 파종 서기가 늦을수록 증가하는 경향이었으며, 전질소 환원량은 피종 시기가 빠른 9월 하순처리가 16.9k/l0a으로 관행대비 2.6배 높았다. 인산 환원량은 10월 중순 파종이 가장 높았으며, 칼륨 환원량은 파종 시기가 빠를수록 증가하는 경향을 나타내었다.

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References

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