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[an error occurred while processing this directive]Regulation of the growth of sprouting roots of black locust seedlings using root barrier panels
Received date: 2022-03-03
Accepted date: 2022-06-15
Online published: 2024-10-16
Copyright
Satoshi Kitaoka , Shiro Matsunami , Yannan Wang , Saki Fujita , Kobayashi Makoto , Toshiyuki Hirata , Takayoshi Koike . [J]. 林业研究(英文版), 2023 , 34(3) : 655 -664 . DOI: 10.1007/s11676-022-01527-9
How can we regulate an invasive alien species of high commercial value? Black locust (Robinia pseudoacacia L.) has a unique capacity for seed dispersal and high germination. Field surveys indicate that black locust increases its growing area with sprouting roots and the elongation of horizontal roots at a soil depth of 10 cm. Therefore, a method to regulate the development of horizontal roots could be effective in slowing the invasiveness of black locust. In this study, root barrier panels were tested to inhibit the growth of horizontal roots. Since it is labor intensive to observe the growth of roots in the field, it was investigated in a nursery setting. The decrease in secondary flush, an increase in yellowed leaflets, and the height in the seedlings were measured. Installing root barrier panels to a depth of 30 cm effectively inhibit the growth of horizontal roots of young black locust.
Key words: Black locust; Horizontal roots; Nutrients; Root barrier panel; Sprouting roots
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