Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
1991
Abstract
No abstract has been registered
Authors
Tore SkrøppaAbstract
No abstract has been registered
Authors
Anders Göransson Toril Drabløs EldhusetAbstract
No abstract has been registered
Authors
Ivar GjerdeAbstract
No abstract has been registered
Authors
Ivar GjerdeAbstract
No abstract has been registered
Authors
Alhaji S. JengAbstract
No abstract has been registered
Authors
Geir-Harald StrandAbstract
No abstract has been registered
Authors
Ivar GjerdeAbstract
No abstract has been registered
Authors
Anders Göransson Toril Drabløs EldhusetAbstract
No abstract has been registered
1990
Authors
Erik Christiansen Halvor SolheimAbstract
In a field experiment in southernmost Norway four young trees of each of eight coniferous species were subjected to artificial inoculation with the pathogenic blue-stain fungus Ophiostoma polonicum, associated with the spruce bark beetle Ips typographus. A dose previously known to be lethal to most Norway spruce trees also killed individuals of Sitka, white, and black spruce, and Douglas fir. All Scots and lodgepole pines, and subalpine firs survived the given load of infection. Douglas fir did not exhibit the induced resinous defence reaction seen in spruce and pine. The fungus did not proliferate in the phloem of Douglas fir, but spread more easily in a tangential direction in the sapwood of this species than in spruce.