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.
2007
Authors
Kinga Adam Anne Kristine Søvik Tore Krogstad Arve HeistadAbstract
No abstract has been registered
Abstract
In spring 2002, extensive damage was recorded in southeast Norway on nursery-grown Norway spruce seedlings that had either wintered in nursery cold storage or had been planted out in autumn 2001. The damage was characterised by a top shoot dieback. Two visually distinct types of necroses were located either on the upper or lower part of the 2001-year-shoot. Isolations from the upper stem necroses rendered Gremmeniella abietina, while Phomopsis sp. was isolated mostly from the from the lower stem necroses. RAMS (random amplified microsatellites) profiling indicated that the G. abietina strains associated with diseased nursery seedlings belonged to LTT (large-tree type) ecotype, and inoculation tests confirmed their pathogenicity on Norway spruce seedlings. Phomopsis sp. was not pathogenic in inoculation tests, this implying it may be a secondary colonizer. We describe here the Gremmeniella - associated shoot dieback symptoms on Norway spruce seedlings and conclude that the unusual disease outburst was related to the Gremmeniella epidemic caused by the LTT type on large pines in 2001. The role of Phomopsis sp. in the tissue of diseased Norway spruce seedlings is yet unclear.
Authors
Svein Solberg Erik NæssetAbstract
No abstract has been registered
Authors
Liv S. Nilsen Asbjørn MoenAbstract
No abstract has been registered
Abstract
Empirical evidence that the N dissipation from dairy production depends tightly on the segregation of animals from plant production is provided
Abstract
No abstract has been registered
Authors
Sissel Hansen Marina Azzaroli Bleken Anne-Kristin Løes Espen Govasmark Anne Falk Øgaard Tor Arvid BrelandAbstract
No abstract has been registered
Authors
Bo Stenberg Trond Maukon Henriksen Sander Bruun Audun Korsæth Lars Stoumann Jensen Tor Arvid Breland Erik Nordkvist Fridrik Palmason Tapio Salo Jon Gudmundsson Martti EsalaAbstract
No abstract has been registered
Abstract
No abstract has been registered
Abstract
No abstract has been registered