論文

査読有り 最終著者
2021年8月20日

Enhanced Summer Planting Survival of Japanese Larch Container-Grown Seedlings

Forests
  • Hisanori Harayama
  • ,
  • Hiroyuki Tobita
  • ,
  • Mitsutoshi Kitao
  • ,
  • Hirokazu Kon
  • ,
  • Wataru Ishizuka
  • ,
  • Makoto Kuromaru
  • ,
  • Kazuhito Kita

12
8
開始ページ
1115
終了ページ
1115
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/f12081115
出版者・発行元
MDPI AG

A previous study revealed low survival rates for Japanese larch (Larix kaempferi) summer-planted seedlings grown in Hiko-V-120 containers. This study examines nursery practices that could potentially prevent deterioration of the seedling water balance after planting to improve the survival rate of this species, which has a low drought tolerance. During summer planting, we tested (1) drought hardening or high-potassium fertilization for two months before planting, (2) antitranspirant or topping treatment at planting, and (3) the use of the JFA-150 container with a larger capacity and lower growing density than the Hiko-V-120 container. Drought hardening increased seedling drought tolerance because of the low leaf:root ratio, due to lower leaf mass production, resulting in increased survival from 74% to 93% in Hiko-V-120 containers. When JFA-150 containers were used, the leaf:root ratio was lower because of higher root mass, resulting in an increase in survival to 87%, with the highest survival of 97% when combined with drought hardening. The application of antitranspirant increased survival to over 90%, whereas topping did not, probably because of severer competition from weeds. High-potassium fertilization did not affect seedling traits or survival. For better survival of summer-planted container-grown Japanese larch seedlings, it is recommended that they be grown in containers providing sufficient cell volume and density for root growth while the seedlings are in the nursery and that irrigation be withheld for two months before planting. In addition, to obtain higher survival, an antitranspirant can be applied at planting at a cost.

リンク情報
DOI
https://doi.org/10.3390/f12081115
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000690597200001&DestApp=WOS_CPL
URL
https://www.mdpi.com/1999-4907/12/8/1115/pdf
ID情報
  • DOI : 10.3390/f12081115
  • eISSN : 1999-4907
  • Web of Science ID : WOS:000690597200001

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