| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Outline of Final Research Achievements |
In this study, the hypothesis that spot weeding is more effective than whole weeding for the survival and height growth of Zelkova serrata saplings, was tested. Four years of survival rate of Zelkova serrata saplings did not differ among whole weeding, spot weeding and non-weeding sites under the within-stand light intensity of 30%. The height increment of Zelkova serrata saplings did not differ between spot weeding and non-weeding sites. The height increment of Zelkova serrata saplings was positively correlated with initial tree height, and there was no difference in the distribution range of scatter plots in relation to weeding types. From these results, it appears that the difference in survival and height growth of Zelkova serrata saplings between whole weeding and spot weeding sites is not observed.
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