Effects of Pruning on the Developing Process of Tree Form of Acer buergerianum Miq

Abstract

Shoot elongation of Acer buergerianum Miq. was investigated after the winter pruning. The shoot length elonged after the pruning depends on the shoot length before the pruning and its height. The trunk enlarging rate is decreased by the pruning, but not so remarkable as a tulip tree (Liriodendron tulipzfera L.)(FUJII et al., 1987) These differences would be resulted from the difference in the amount of leaf, i. e. the amount of leaf of pruned individual is mostly same as the non-pruned one owing to the existence of a short shoot besides a long shoot in case of A. buergerianum, but not in case of a tulip tree.