水耕キュウリの培養液非交換による収量の減少と活性炭添加による回復

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タイトル別名
  • Decrease of Yield of Cucumber by Non-renewal of the Nutrient Hydroponic Solution and its Reversal by Supplementation of Activated Charcoal.
  • スイコウ キュウリ ノ バイヨウエキ ヒ コウカン ニヨル シュウリョウ ノ

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抄録

Experiments were conducted to clarify why fruit yield decrease during the late growing-period of cucumber cultured in hydroponic nutrient solution which was not completely renewed but only restored (a non-renewal culture). Furthermore, means to recover the decrease in fruit yield in the non-renewal culture system were investigated. 1. Vegetative growth was unaffected by biweekly total renewal or non-renewal of the culture solution. 2. When the culture solution was supplemented, the yield of 'Shogoin-aonaga-fushinari' and 'PI 169391' decreased, whereas that of 'Hokushin' and 'Chojitu-ochiai 2 gou' did not. 3. No decrease in fruit yield was observed when the solution was supplemented with nutrients and activated charcoal. This result suggests that root exudates had induced the decrease in fruit yield, especially by affecting young fruits, because the decrease was reversible through removal of the root exudates by the activated charcoal.

収録刊行物

  • 園芸学会雑誌

    園芸学会雑誌 67 (1), 99-105, 1998

    一般社団法人　園芸学会

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