カラムナータイプリンゴ'メイポール'の樹体生育・果実生産効率・乾物生産特性に及ぼす整枝法の影響(栽培管理・作型)

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Growth habits, fruit production efficiency and dry matter production of columnar-type tree 'Maypole' on 'Marubakaido' (Malus. prunifolia Bork. var. ringo Asami) trained to a Y- trellis system were compared with those trained to a central leader, The spread of the tree width of the trees on a Y- trellis was faster than that of the trees on a central leader, and the number of flower buds, shoot numbers, total shoot length and total lateral branch numbers on a Y- trellis increased more than those of the trees on a central leader. The tree height on a central leader was greater. As regards the maximal distribution area of fruits, leaves, shoots and branches except shoot from the ground, the trees on a central leader gradually shifted to the upper area in proportion with increasing tree- age, but the area of the 5-year-old to 7-year-old trees on a Y- trellis were maintained at about 200 cm. The yield per trees on a Y- trellis from 6-year-old was greater than that of trees on a central leader. The cumulative yield of trees per area on a central leader was greater than that of trees on a Y-trellis, but the difference decreased gradually from 6-year-old trees. Fruit weight of the trees on a Y- trellis was heavier than that of trees on a central leader. The percent instantaneous incident photosynthetic photon flux density of trees grown by both systems decreased gradually in the lower and middle area in proportion to increasing tree age, but the degree of decreased was higher in trees on a central leader. Total leaf area and leaf area index perm^2 of 7-year-old trees on a central leader and Y- trellis were 10.3 cm^2, 11.8 and 14.5 cm^2, 7.6, respectively. Total dry matter production per year of 7-year-old treeson a central leader and Y-trellis was 3,282 g and 5,579 g, respectively. There was no difference in the percentage distribution of dry matter in each organ. It is considered that the columnar- type apple 'Maypole' trees on a Y- trellis facilitates labor reduction in the orchard and promote production of high quality fruit compared to trees on a central leader.
園芸学会の論文
2004-12-15

カラムナータイプリンゴ'メイポール'の樹体生育・果実生産効率・乾物生産特性に及ぼす整枝法の影響(栽培管理・作型)

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