Effects of Supplementary Stroboscope and UV Lighting and Addition of Coral Sand to Nutrient Solution on Lettuce Yield and Quality.

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  • NAKABAYASHI Kazushige
    Department of Agricultural Chemistry, Faculty of Agriculture, Meiji University
  • ASAI Tsukasa
    Department of Agricultural Chemistry, Faculty of Agriculture, Meiji University

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Other Title
  • ストロボ光やＵＶ光による補光および培養液へのサンゴ砂の添加がレタスの収量や品質に及ぼす影響
  • ストロボコウ ヤ UVコウ ニ ヨル ホコウ オヨビ バイヨウエキ エ ノ サンゴ スナ ノ テンカ ガ レタス ノ シュウリョウ ヤ ヒンシツ ニ オヨボス エイキョウ

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Abstract

We investigated the effects of the changes to growing conditions on the growth and quality of lettuce in hydroponic cultures.<BR>A reduction in the normal nutrient concentrations from 0.5 units 0.3 units decreased both the level of nutrient uptake and plant growth and the addition of coral sand to the nutrient solution decreased the yield and increased the glutamic acid content.<BR>Irradiation of the crop using UV lighting increased the ascorbic acid content despite a slight decrease in yield and irradiation using 20 Hz stroboscopic lighting increased both the crop yield and glutamic acid content.

Journal

  • Shokubutsu Kojo Gakkaishi

    Shokubutsu Kojo Gakkaishi 13 (3), 183-191, 2001

    JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS

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