Stem-rot damage and the progress of causal fungi in old-aged Japanese larch trees at the foot of Mt. Fuji |
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| Authors: | Masashi Ohsawa Yoshio Kuroda Mitsutoshi Tsunoda Keizo Katsuya |
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| Affiliation: | (1) Yamanashi Forestry and Forest Products Research Institute, Masuho, 400-05 Yamanashi, Japan;(2) Institute of Agriculture and Forestry, University of Tsukuba, 305 Ibaraki, Japan;(3) Forestry and Forest Products Research Institute, 305 Ibaraki, Japan |
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| Abstract: | Damage caused by stem-rot and the progress of the causal fungi in old-aged Japanese larch (Larix kaempferi (Lamb.) Carr.) was investigated at the foot of Mt. Fuji. Stem-rot was found in 75% of 108 trees investigated, and volume of rot was 6% of the total wood volume in the forest investigated. Stem-rot damage was much greater than the damage by butt-rot.Stereum sanguinolentum (Alb. and Schw. ex Fr.) Fr. infected larch trees at the greatest incidence (49.4%). However,Porodaedalea chrysoloma (Fr.) Imaz. caused the most volume loss to the trees.S. sanguinolentum infected larch stems mainly through stem wounds, and decay caused by the fungus progressed 9.75×102 cm3/year on average.P. chrysoloma infected larch stems mainly through dead branches and wounds, and the average rate of decay progress for the fungus was 2.74×103 cm3/year. |
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| Keywords: | larch disease Porodaedarea chrysoloma (Fr.) Imaz. rate of decay progress stem-rot Stereum sanguinolentum (Alb. and Schw. ex Fr.) Fr. |
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