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.

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1988

Doctoral dissertation – Delia fabricii Holmgren (Diptera: Anthomyiidae) - a pest on smooth meadow-grass (Poa pratensis L.) grown for seed production in Northern Norway

Tor J. Johansen

Norges Landbrukshøgskole, 1988. 52 p.

Authors

Tor J. Johansen

Abstract

No abstract has been registered

Academic – Effects of fluctuating irrigation on Norway spruce seedlings and on nutrient concentration in the growth substrate

Bjørn Langerud, Martin Sandvik

Norwegian Journal of Agricultural Sciences, 2 1988. 109-117

Authors

Bjørn Langerud Martin Sandvik

Abstract

No abstract has been registered

Report – Frost resistance in forest trees. A literature survey

Oddvar Skre

Meddelelser fra Norsk institutt for skogforskning, 40(9) 1988. 35 s.

Authors

Oddvar Skre

Abstract

Frost damages may take place by rapid intracellular freezing or by extracellular ice formation and cell dehydration. The damages are measured visually or by electroconductivity measurements.The first hardeing stage is induced by short days and light, and is related to dormancy induction. The second stage is induced by low temperatures (-2-5 C). During this and the third stage, water binding forms of proteins and sugars are formed, and the membranes are re-structured in order to better withstand dehydration.Potassium prevents frost damages by increasing the resistance against dehydration while nitrogen and phosphorus in high concentrations are extending the growth period and exhaust carbohydrate reserves, making the plants more exposed to frost damages.

Academic – Fungi on spruce needles in Norway. I. Litterfall samples from the permanent plots of the Norwegian Monitoring Program for Forest Damage in 1986

Halvor Solheim

Agarica, 9(18) 1988. 55-60

Authors

Halvor Solheim

Abstract

No abstract has been registered

Academic – Glyphosate application in forest - ecological aspects. VI. Browsing by moose (Alces alces) in relation to chemical and mechanical brush control

Olav Hjeljord, Svein Grønvold

Scandinavian Journal of Forest Research, 3 1988. p. 115-121

To document

Authors

Olav Hjeljord Svein Grønvold

Abstract

No abstract has been registered

Academic – Glyphosate application in forest - ecological aspects. VII. The effect on mountain hare (Lepus timidus) use of a forest plantation

Olav Hjeljord, Viveke Sahlgaard, Edgar Enge, ...

Scandinavian Journal of Forest Research, 3 1988. p. 123-127

To document

Authors

Olav Hjeljord Viveke Sahlgaard Edgar Enge Magny Eggestad Svein Grønvold

Abstract

No abstract has been registered

Report – Gremmeniella abietina on pine. The fungus. Symptoms. Mixing up with other fungi

Finn Roll-Hansen

Mitteilungen der Forstlichen Bundesversuchsanstalt Wien, 162 1988. 37-39

Authors

Finn Roll-Hansen

Abstract

No abstract has been registered

Lecture – Handling and storing of chips at small and medium sized heating installations

Olav Gislerud, Simen Gjølsjø, Tor Thorkildsen

Swedish University of Agricultural Sciences, Department of Operational Efficiency. Research notes , 134 1988. 168-192

Authors

Olav Gislerud Simen Gjølsjø Tor Thorkildsen

Abstract

No abstract has been registered

Lecture – Outplanting of seedlings and mycorrhizae

Isabella Børja

2nd European Symposium on Mycorrhizae. Abstracts. August 14-20, 1988, Prague, Czechoslovakia. Czechoslovak Academy of Sciences, Prague, 1988. 15

Authors

Isabella Børja

Abstract

No abstract has been registered

Report – Pathogenicity of some Ips typographus-associated blue-stain fungi to Norway spruce

Halvor Solheim

Meddelelser fra Skogforsk, (40.14) 1988. 11 p.

To document

Authors

Halvor Solheim

Abstract

To test the pathogenicity of Ips typographus-associated fungi to Norway spruce, trees were inoculated with four species, Ophiostoma polonicum, O. bicolor, O. penicillltum and Graphium sp. Trees inoculated with the three Ophiostoma species produced strong hypersensitive responses in the phloem and exuded more resin than did the control trees. Only O. polonicum was able to invade the sapwood and consequently able to kill trees. Inoculation with Graphium sp. gave the same response as inoculation with the control.

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