Blar i Skogforsøksvesenet/Skogforsk, Meddelelser på forfatter "Christiansen, Erik"
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Artificial inoculation with Ips typographus-associated blue stain fungi can kill healthy Norway spruce trees
Horntvedt, Richard; Christiansen, Erik; Solheim, Halvor; Wang, Shasheng (Meddelelser fra Norsk institutt for skogforskning;38.4, Research report, 1983-01)An infection experimcnt was made to test the pathogenicity of two Ceratocystis species on Norway spruce trees. Water stress in inoculated and control trees was measured by means of xylem water potential, stomatal aperture ... -
Chemical repellent prevents moose browsing
Christiansen, Erik (Meddelelser fra Norsk institutt for skogforskning;34.10, Report, 1979) -
Pathogenicity of five species of Ophiostoma fungi to Douglas fir
Christiansen, Erik; Solheim, Halvor (Meddelelser fra Skogforsk;47.1, Research report, 1993-01)