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Regulating the growth black locust seedlings by inhibiting the sprouting roots; An examination of effectiveness of root-growth regulation plates

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Please use this identifier to cite or link to this item:https://doi.org/10.14943/EJFR.22.33

Title: Regulating the growth black locust seedlings by inhibiting the sprouting roots; An examination of effectiveness of root-growth regulation plates
Authors: MATSUNAMI, Shiro Browse this author
KITAOKA, Satoshi Browse this author
KOIKE, Takayoshi Browse this author →KAKEN DB
HIRATA, Toshiyuki Browse this author →KAKEN DB
MAROZAS, Vitas Browse this author
SATOH, Fuyuki Browse this author →KAKEN DB
Keywords: Black locust
root-barrier panel
root-shoot communication
soil nutrients
sprouting root
Issue Date: 2022
Publisher: Hokkaido University Forests, EFRC
Journal Title: Eurasian Journal of Forest Research
Volume: 22
Start Page: 33
End Page: 38
Abstract: Black locust (Robinia pseudoacacia L.) is an alien species that is commonly planted in devastated lands, parks, residential gardens and is used as a nectar source for bees. However, the Japanese government has designated this species as an “Industrial exotic species under watch" because its rapid growth and reproductive capacity allows it to outcompete indigenous vegetation. Field surveys revealed that the back locust spreads through its sprouting roots and the elongation of its horizontal roots at soil depths between 0 and 10 cm. A practical method to regulate the spread of black locust would be to suppress the development of horizontal roots. Based on a nursery experiment, we propose the use of root-barrier panels to block and suppress the growth of horizontal roots. Monitoring the growth of roots in the field is labor-intensive, so we investigated the impact of root-barrier panels on shoot development by measuring the length of sprouting roots, the decrease in secondary flush, the increase in yellowed leaflets, and impact on plant height in a nursery setting. We concluded that root-barrier panels set at a depth of 30 cm effectively inhibited the growth of the horizontal roots of young black locust less than 3years old.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/84966
Appears in Collections:Eurasian journal of forest research > Vol.22

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