%0 Article
%T An example on the economic loss caused by decay in growing Norway spruce timber in Southern Finland
%A Kallio, Tauno
%D 1972
%J Silva Fennica
%V 6
%N 2
%R doi:10.14214/sf.a14668
%U https://silvafennica.fi/article/4865
%X <p>A growing stand of Norway spruce (<em>Picea abies</em> (L.) H. Karst.) marked for cutting was investigated in the winter of 1971–72 in Helsinki in Southern Finland in order to determine the economic loss caused by decay. Taking a sample from growing spruce trees with increment borer is not a reliable method of determining the frequency of decay. The decayed stems were twice measured for assortment cutting into lengths; the first time disregarding the decay and the second time doing the actual assortment cutting according to the grade of timber. The direct economic loss caused by decay was 13% of the price for standing timber. The indirect loss may be as great as the direct loss.</p>
<p>The PDF includes a summary in English.</p>