Effect of Bud Pruning on Stem Crookedness and Stem Growth in Young Sendan (<i>Melia azedarach </i>L.) Stands

Yokoo Kenichiro, Matsumura Junji

doi:10.4005/jjfs.105.54

<p>To examine the impact of bud pruning in the correction of stem crookedness of Melia azedarach, three clones (types 1, 18, and M) were planted at a rate of 1,100 trees/ha in young M. azedarach stand and bud pruning was performed up to a height of 4.5 m above ground. Subsequently, in two years, the number of treatments, aboveground height, stem crookedness per 4 m length (maximum camber), and diameter growth were compared to those of a control non-pruned plot. A reduction of diameter growth was observed in the test plot as compared to the control plot, but there was no difference between clones within the same treated plot. Compared to other clones, the M type not only had a small total number of sprouts but also had less growth on its elongated stems (2.5 to 4.5 m above the ground) in the 2nd year. Hence, it was considered to be a clone that could reduce the cost of bud pruning. The maximum camber in the test plot ranged between 2.22-2.56 cm, which was significantly less than that of the control plot (11.20-15.33 cm). The maximum camber between clones was significant in the control plot but not in the test plot. Thus, bud pruning could correct stem curvature regardless of clones. The findings from this study suggest that bud pruning of M. azedarach may contribute to the consistent production of straight stem.</p>

Effect of Bud Pruning on Stem Crookedness and Stem Growth in Young Sendan (<i>Melia azedarach </i>L.) Stands

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