Defoliation of Giant dogwood (Swida controversa) caused by zonate leaf blight

• Osono Takashi

  Lab. Forest Ecology, Grad. Sch. Agric., Kyoto Univ.

• Mori Akira

  Lab. Forest Ecology, Grad. Sch. Agric., Kyoto Univ.

• Koide Kanade

  Lab. Forest Ecology, Grad. Sch. Agric., Kyoto Univ.

Bibliographic Information

Other Title

• 輪紋葉枯病によるミズキの早期落葉

Abstract

In order to investigate the damage due to outbreak of zonate leaf blight of Swida controversa, seasonal and within-crown distribution patterns of defoliation caused by this disease were studied in a cool temperate deciduous forest in the northeast part of Kyoto Prefecture, Japan. Proportion of shoots with blighted leaves increased from July to October in the first-order shoots elongating in May and in the second-order shoots elongating from June to July, and from August to October in the third-order shoots elongating from June to July. Defoliation was evident from July to August on the first-order shoots, and from August to September on the second and third-order shoots. From September to December, the number of leaves decreased due to the disease infection and naturally-occurring death. Defoliation was severer at the lower leaf layers than at the upper leaf layers of canopy trees, whereas defoliation was slight in suppressed trees irrespective of leaf layers.

Journal

• Applied Forest Science

  Applied Forest Science 13 (2), 161-164, 2004

  The Society of Applied Forest Science

Keywords

• defoliation
• season
• Swida controversa
• within-crown distribution
• zonate leaf blight

Details

• CRID: 1390282679435185664
• NII Article ID: 110009497768
• DOI: 10.20660/applfor.13.2_161
• ISSN: 21898294
• ISSN: 13429493
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed