Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
권호 표지

Growth and Nutrient Uptake of 'Seolhyang' Strawberry (Fragaria × ananassa Duch) Responded to Elevated Nitrogen Concentrations in Nutrient Solution

질소 시비농도가 '설향' 딸기(Fragaria × ananassa Duch)의 생장과 무기원소 흡수에 미치는 영향

  • Choi, Jong-Myung (Department of Horticulture, Chungnam National University) ;
  • Latigui, Ahmed (Faculty Agronomical and Veterinary Science, University of IBN Khaldoun) ;
  • Yoon, Moo-Kyung (Vegetable Research Divisions, National Institute of Horticultural & Herbal Science)
  • Received : 2010.01.13
  • Accepted : 2010.06.22
  • Published : 2010.10.31
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Abstract

This research tested five modified Hoagland solutions for proper fertility management of nitrogen in 'Seolhyang' strawberry cultivations. The changes of nutrient solutions were in total nitrogen concentrations ($meq{\cdot}L^{-1}$) such as 0 (${NO^-}_3$), 2.5 (${NO_3}^-$), 5 (${NO_3}^-$), 10 ($7.5{NO_3}^-$ + $2.5{NH_4}^+$) and 15 ($10{NO_3}^-$ + $5{NH_4}^+$). The fresh weight and $NO_3$-N concentrations in petiole sap responded to the elevated nitrogen concentrations in fertilizer solution in quadratic (y=7.10+2.668x-$0.115x^2$, $R^2=0.7983^{***}$) and linear (y=26.14+5.245x, $R^2=0.6083^{***}$), respectively. The dry weight and N content of the above ground plant tissue responded to the elevated nitrogen in quadratic (y=2.140+0.492x-$0.022x^2$, $R^2=0.6110^{***}$) and linear (y=0.569+0.033x, $R^2=0.6952^{***}$), respectively. In our experiment the solution with $5meq{\cdot}L^{-1}$ of ${NO_3}^-$ showed positive results in both dry and fresh weight productions. However, a future research about modification of this solution and growth and nutrient uptake response is necessary to achieve better growth of 'Seolhyang' strawberry.

'설향' 딸기의 영양생리를 구명하기 위한 연구의 일환으로 Hoagland 용액의 질소 수준을 변화시킨 용액으로 재배하면서 생장 및 무기원소 흡수에 미치는 영향을 구명하기 위해 본 연구를 수행하였다. 본 연구에서 적용한 관비용액의 질소 수준($meq{\cdot}L^{-1}$)은 0(${NO_3}^-$), 2.5(${NO_3}^-$), 5(${NO_3}^-$), 10($7.5{NO_3}^-$ + $2.5{NH_4}^+$), 그리고 15($10{NO_3}^-$ + $5{NH_4}^+$) 였다. 정식 120일 후의 지상부 생체중과 엽병추출액의 질산태질소 농도는 관비용액의 질소 시비수준이 높아짐에 따라 각각 2차곡선회귀적(y=7.10+2.668x-$0.115x^2$, $R^2=0.7983^{***}$) 또는 직선적(y=26.14+5.245x, $R^2=0.6083^{***}$)으로 증가하였다. 지상부 건물중과 건물내 질소 함량도 각각 2차곡선회귀적(y=2.140+0.492x-$0.022x^2$, $R^2=0.6110^{***}$) 또는 직선적(y=0.569+0.033x, $R^2=0.6952^{***}$)으로 증가하는 반응을 보였다. 식물체의 지상부 건물중과 생체중을 고려할 때 본 연구에서 적용한 관비용액의 질소농도 중 5meq.L-1 처리의 생장이 가장 우수하였지만 '설향' 딸기의 최적 생장을 위해 $5meq{\cdot}L^{-1}$ 처리 용액을 변화시켜야 하며 추후 관련 연구가 필요하다고 판단하였다.

Keywords

References

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