Effects of Pruning Methods on the Yield and Flower Bud Development in Apple Trees of 'FUJI'/M.26/MAC 9 Rootstocks = 剪定方法이 MAC 9 臺木에 접목된 '후지' 사과나무의 生長과 花芽形成에 미치는 影響

국문 초록 (Abstract)

矮性臺木 Mac9에 접목된 '후지' 사과나무의 生長과 花芽生長에 미치는 影響을 埴壤土에 列間距離 3.5m×柱間距離 2.5m로 栽植한 나무를 이용하여 栽植후 1年次인 1991년부터 3年次인 1993년까지 主幹에서 돋아난 主枝에 對하여 솎음전정(間枝剪定)만 實施한 것, 절단전정(切斷剪定)만 實施한 것, 栽植後 一年間만 切斷剪定을 實施한 후에 2年次와 3年次에는 솎음剪定만 實施한 것으로 나누어 試驗하였다. 樹幅에 있어서 솎음전정(間枝剪定)만 實施한 나무가 다른 處理보다 큰 結果를 보인 것 이외에는 樹高를 包含하여 樹體의 生長量과 剪定方法間에는 差異가 없었다. 花芽形成에 있어서는 솎음剪定만을 實施한 나무와 1年間 切斷剪定후에 2年間 솎음剪定만을 實施한 나무가 切斷剪定만을 實施한 나무에 비하여 栽植後 3年次 의 總花芽數, 花芽着生密度에 있어서 크게 많은 結果를 보여주었다.

다국어 초록 (Multilingual Abstract)

Three different pruning methods for one-year-old apple trees of Fuji/M.26/Mac 9 were applied in March 1992 and in 1993. respectively. The pruning methods practised on scaffold branches were thinning-out pruning only for two years, heading-back pruning only for two years and one-year heading-back pruning only followed by one-year thinning-out pruning only, respectively. In tree width, the thinning-out pruning only for scaffold branches gave wider tree canopy than the heading-back only for two years or one-year heading-back pruning plus one-year thinning-out pruning upto 3-year-old trees. In the number of flower bud per tree, the flower bud density within tree canopy and flower bud number per trunk cross-sectional area(TCA), the thinning-out pruning only or the heading-back pruning only for one-year followed by the thinning-out pruning only for scaffold branches proved to be clearly superior over the heading-back only pruning for scaffold branches in 3-year-old dwarf apple trees. However, in the tree height growth, in branch development, in tree volume and in trunk cross-sectional area(TCA), the three pruning methods showed non-significant differences among the pruning methods.