Effects of Soil-less Culture System Combined with Sub-irrigation and Circulation of Nutrient Solution on Shoot Growth, Fruit Quality and Yield of ‘Muscat of Alexandria’ Grapes

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  • Tamura Fumito
    Agricultural Experiment Station, Okayama Agricultural General Center
  • Fujii Yuichiro
    Agricultural Experiment Station, Okayama Agricultural General Center

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Other Title
  • 底面給液および培養液循環を組み合わせた養液栽培法がブドウ‘マスカット・オブ・アレキサンドリア’の新梢生長，果実品質および収量に及ぼす影響
  • 土壌管理・施肥・灌水 底面給液および培養液循環を組み合わせた養液栽培法がブドウ'マスカット・オブ・アレキサンドリア'の新梢生長,果実品質および収量に及ぼす影響
  • ドジョウ カンリ セヒ カンスイ テイメンキュウエキ オヨビ バイヨウエキ ジュンカン オ クミアワセタ ヨウエキ サイバイホウ ガ ブドウ マスカット オブ アレキサンドリア ノ シン ショウ セイチョウ カジツ ヒンシツ オヨビ シュウリョウ ニ オヨボス エイキョウ

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The suitability of media and root-zone volume in a soil-less culture system using a combination of subirrigation and circulation of nutrient solution were investigated in the ‘Muscat of Alexandria’ grapevine. The grapevines were planted in three types of containers differing in volume, 70, 100, 200 liter, and filled with either perlite or porous charcoal. The planting containers were individually placed in larger trays, and the water level was maintained at a constant level and sub-irrigated. The canopy area of each grapevine was restricted within 5 m2.<br> The shoot growth, leaf area and LAI of grapevines in perlite were significantly larger than those of grapevines in charcoal medium. Grapevines grown in perlite showed a slightly lower berry set percentage but higher yield than grapevines grown in charcoal medium because of the high incidence of berry sunscald on fruit grown in charcoal.<br> The shoot length was measured periodically and the total leaf-area of each shoot and LAI measured at full bloom and veraison were the largest among grapevines grown in 200 liters of media and smallest in those grown in 70 liters of media. Grapevines grown in 200 liters of media showed a higher berry set percentage and yield but lower incidence of berry sunscald than did grapevines grown in 70 liters of media.<br> Although the shoot growth did not different between the two methods of nutrient solution supply, with or without periodic circulation, grapevines grown without circulation of nutrient solution developed leaf sunscald probably due to water stress in the summer and then growth declined during the next season.<br> The yield and fruit quality of the grapevines growth in 200 liters of perlite with sub-irrigation and circulation of nutrient solution satisfied the cultivation standards of ‘Muscat of Alexandria’ grape in Okayama Prefecture.<br>

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