Rot caused by Stereum sanguinolentum and its spread through the Norway spruce stem in the LHC Obrova noha management-plan area
Cermak, P.(Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Ochrany Lesu a Myslivosti)E-mail:[email protected] | Malik, J.
Peeling and browsing damage to Picea abies caused by red deer and further attacks of the trees by Stereum sanguinolentum were monitored in forest stands with trees aged between 26 and 65 years (Drahanska Highands, Czech Republic). On the whole, 56% out of 1,561 trees were damaged by peeling and browsing, 82% of them having been attacked by Stereum sanguinolentum. Ninety-two per cent of trees in the 3rd age class with symptoms of rot were also damaged by peeling. Ninety trees attacked by Stereum sanguinolentum with peeling wounds between 6 and 41 years old were cut down. The rot affected between 10 and 94% of the stem volume (39% on average). It spread vertically through the stem at an average speed of 10.5 cm per year (from 1.3 to 28.1 cm per year). The volume of damaged wood was in positive correlation (r=0.683) with the age of peeling wounds, whereas the speed of rot spreading was in negative one (r=-0.723) with the age of peeling wounds.
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