Concentrations of Aluminum Complexes in Tea Leaves and Soils from Tea Plantations

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  • Nishino Katsutoshi
    Graduate School of Biostudies, Kyoto University
  • Kubo Nakao
    Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
  • Fukunaga Koji
    Kyoto Prefectural Agriculture, Forestry and Fisheries Technology Center, Agriculture and Forestry Technology Department, Tea Industry Research Division
  • Hirai Nobuhiro
    Graduate School of Agriculture, Kyoto University

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  • 茶葉および茶畑土壌中のアルミニウム錯体濃度
  • チャバ オヨビ チャバタケ ドジョウ チュウ ノ アルミニウム サクタイ ノウド

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<p>Aluminum ions, which generally suppress root elongation of plants, are important for the growth of tea plants. We analyzed the concentrations of aluminum complexes in tea leaves and soils from the ‘Yabukita’, ‘Benifuki’ and ‘Benihomare’ tea plantations using 27Al NMR spectrometry. The monthly changes in concentrations of aluminum ions were also examined using local varieties of tea leaves from Kyoto and soils in which the tea plants grow. The complexes (oxalato) aluminate and (citrato) aluminate, Al (SO4)+, and aluminum ions were detected in most samples. Their concentrations in the leaves and soils varied among cultivars and sampling times.</p>

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