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Windthrow resistance of apple trees grafted in an orchard

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Title: Windthrow resistance of apple trees grafted in an orchard
Authors: Koizumi, Akio Browse this author →KAKEN DB
Araki, Hajime Browse this author →KAKEN DB
Hori, Hirotaka Browse this author
Inagawa, Yutaka Browse this author
Keywords: windthrow resistance
critical wind velocity
uprooting strength
apple trees
pull-down test
Issue Date: Jan-2008
Publisher: Springer
Journal Title: Journal of Wood Science
Volume: 54
Issue: 1
Start Page: 10
End Page: 15
Publisher DOI: 10.1007/s10086-007-0907-7
Abstract: Pull-down tests were conducted for apple trees grafted in an orchard and for support posts in order to discuss the failure mode in windthrow damage, the effect of rootstock types on the uprooting strength, and the reinforcing effect of support posts on young trees. The test samples were 10 mature trees (20–23 years old) of 3 varieties grafted on two types of rootstocks, 3 young trees (7 years old) grafted on dwarf rootstocks, and 9 support posts of larch logs and steel pipes. The failure modes were found to be uprooting for mature trees and rootstock breakage for young trees. The uprooting strength of apple trees was considerably smaller than the uprooting strength of forest trees reported in previous studies. However, the windthrow resistance of the apple trees with respect to the critical wind velocity was estimated to be sufficient despite their low uprooting strength because of their small height. Young trees should be supported with wooden posts for a few years after grafting so that they acquire sufficient windthrow resistance.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小泉 章夫

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