Effects of Germanium Treatments on Nutrient Concentrations in Soil and Leaves and Leaf Characteristics in a 'Niitaka' Pear (Pyrus pyrifolia) Orchard

게르마늄 처리 방법이 '신고'배 과원의 토양과 엽의 무기성분 및 엽 특성에 미치는 영향

  • Received : 2010.10.07
  • Accepted : 2011.06.24
  • Published : 2011.06.30

Abstract

This study was conducted to investigate the effects of germanium (Ge) application types on the nutrient concentrations in soil and leaves and leaf characteristics in a 'Niitaka' pear orchard in 2004. Ge application included foliar application, fertigation in soils, trunk injection, and the three-combined application. All Ge treatedplots had lower soil $NO_3$-N, K, and Ca concentrations than those of control plot. Ge concentrations in Ge treated-soils were approximately 50 times higher than those of the control. Ge applications significantly increased area, dry weight, and specific weight in leaves compared to the control. Control treated-trees had greater K concentrations in leaves than the Ge treated-trees, which was oppositively observed for the leaf Ca; leaf Ca was higher on the Ge treated-trees than control. Leaf Ge concentrations were significantly higher on the Ge treated-trees compared to the control, except for the Ge fertigation. Ge concentrations in fruits were greater on the Ge-treated trees than the control trees.

본 연구는 기능성 성분으로 알려져 있는 게르마늄을 '신고' 배 과원에 처리 방법을 달리 했을 때 토양과 엽내 무기성분과 엽 특성에 어떠한 영향을 미치는지에 대해서 2004년에 조사하였다. 게르마늄 처리는 엽면살포, 토양 내 관주, 수간주입, 그리고 앞의 세 가지 처리를 혼용한 복합처리를 포함하였다. 게르마늄 처리는 대조구에 비해 토양 중 질산태질소와 칼륨과 칼슘 농도를 오히려 감소시켰다. 게르마늄 처리는 대조구에 비해 토양 중 게르마늄을 약 50배 이상 증가시켰으며, 엽면적, 엽건물중, 그리고 엽비중을 통계적으로 유의성 있게 증가시켰다. 대조구는 게르마늄 처리구에 비해서 엽내 칼륨농도를 유의성 있게 증가시켰고, 반대로 칼슘은 게르마늄 처리구에서 높은 경향이 나타났다. 엽내 게르마늄은 게르마늄 관주처리를 제외하고 대조구보다 현저히 높게 나타났고, 과실 내 게르마늄은 모든 처리구에서 대조구 보다 높게 나타났다.

Keywords

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