Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Effects of the Aqueous Extract from Persicaria longiseta on Growth and Yield of Potato

개여뀌의 추출물이 감자생장과 수량에 미치는 효과

  • Received : 2015.03.30
  • Accepted : 2015.06.12
  • Published : 2015.06.30
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Abstract

The study was conducted on growth and yield of potatoes in a wick hydroponic culture as affected by concentration of aqueous extracts in order to develop natural agricultural resources using Persicaria longiseta. Each 500 ml of distilled water (control) and P. blumei extracts (25%, 50%, 75%, and 100%) was applied to potato plants at 5 d intervals from 1 d after potato transplanting. The potatoes with P. blumei extract emerged 1 d earlier and had 0.3 to 0.4 more stem numbers per plant compared with those of control plot. The plant height was higher in plots with P. blumei extract than in control in early stage of potatoes (50 d), but there was no significant difference observed after mid-stage of potatoes (70 and 90 d). The stem diameter and fresh weight of potatoes estimated a higher values in plots with P. blumei extract than in control plots, although there was no statistical difference. The 100% P. blumei extract increased by up to $13.8kg/m^2$ of potato yield. The numbers of tubers in classes of < 5 g and 5 to 30 g per plant did not show a specific trend among experimental treatments while it in class of > 30 g was much higher in plots with P. blumei extract than in control plot. Accordingly, the P. blumei extract had a positive effect on the growth and yield of potatoes, could be applied as of eco-friendly fertilizers

본 연구는 개여뀌를 이용하여 친환경 농자재로 개발하기 위한 기초자료를 제공하기 위해 수용성 추출액의 농도에 따른 재배작물인 감자생육에 미치는 알레로패시 효과를 조사하였다. 감자 시험구 처리는 개여뀌추출물 무처리, 25%, 50%, 75%, 100%로 하였으며, 개여뀌추출물의 처리는 정식 1일 후부터 5일 간격으로 처리구에 따라 관주하였다. 개여뀌의 수용성 추출액농도가 증가함에 따라 대조구에 비하여 맹아가 완료되는 시기가 1일이 빨랐고, 경수는 0.3-0.4/1주 개가 많았다. 경장은 생육초기에는 개여뀌추출물 처리구가 무처리구에 비해 컸으나, 생육 중반 이후에는 차이를 보이지 않았으며, 경직경 및 지상부 생체중은 개여뀌 처리구가 무처리구에 비해 양호한 경향을 보였으나 통계적 유의성은 없었다. 감자의 총수량/$m^2$은 개여뀌를 처리한 100%구에서 $13.8kg/m^2$로 가장 많았으며 처리간에 유의차가 인정되었다. 감자의 크기별 개수는 4 g 이하, 5-30 g 미만의 괴경 수량은 각 처리간에 일정한 경향을 보이지 않았으나 31 g 이상의 괴경 수량은 무처리구에 비해 개여뀌 수용성 추출물 처리구가 현저히 높았다. 이들 결과를 종합하면 개여뀌의 allelopathy 효과는 감자의 생육과 수량형질이 촉진되어 친환경 비료로써 활용 가능성을 가지고 있는 것으로 판단된다.

Keywords

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