Blar i Skogforsk, Aktuelt på forfatter "Kvaalen, Harald"
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Defence reactions in Norway spruce toward the pathogenic root-rot causing fungus Heterobasidion annosum
Fossdal, Carl Gunnar; Hietala, Ari Mikko; Kvaalen, Harald; Solheim, Halvor (Others, 2006)The root-rot causing fungus Heterobasidion annosum can attack both spruce and pine trees and is the economically most damaging pathogen in northern European forestry. We have monitored the H. annosum S-type (fairly recently ...