The Swedish Forest Agency and the forestry have been monitoring the swarms of spruce bark beetles, and their observations show signs that a new generation of spruce bark beetles has begun to swarm. They attack wind traps, felled trees and standing forest.
”We had a favorable weather for the spruces in July with a lot of rain and relatively low temperature, but during August it has been hot and dry in many places, which instead benefits the spruce bark beetles,” says Lennart Svensson, national damage coordinator at the Swedish Forest Agency.
The Stop the Drills project, which is run by actors in the forest industry together with the Swedish Forest Agency, now wants to encourage forest owners to be aware of new swarms of spruce bark beetles on their stands.
”It is of the utmost importance that we are helped to find new infestations as early as possible, so that the infested spruces can be felled while the spruce bark borers are still under the bark. Then most of the timber value can also be saved,” says Matts Söderström, forest manager at Mellanskog.
The Swedish Forest Agency writes that the increased swarming activity, which is probably a mixture of both first and second generation spruce bark beetles, is now noticeable mainly in eastern Svealand and eastern Götaland.
The Swedish Forest Agency will make an initial assessment of this year’s damage in early September, but a final estimate based on an inventory will be made later this autumn in collaboration with the Swedish University of Agricultural Sciences.
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