sdu faculty of forestry journal special edition 2009 - Orman Fakültesi

SDÜ Faculty of Forestry Journal
has been found that the disease incidence decreased after some years after the
severe outbreaks in 1999 and 2001. In spite of this it means that several years after
a severe infection there is still a lot of viable spores left, particularly in the forest.
More then two years after felling it seems to be a trend that seedlings planted in the
middle of the clear-cut areas were less infected then seedling planted close to the
forest. The variation between infections in the forest on the different sites was low
compared to infections on the clear cut areas. The general conclusion is that it is
advisable to wait with replanting with pine seedlings at least two years after felling
severely Gremmeniella infected stands. Then the risk of infection form twigs and
branches left on the clear cut area also is smaller.
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