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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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1998

Academic – Rain cover protection against cracking of sweet cherries. The effects on marketable yield.

Jorunn Børve, Mekjell Meland

Acta Horticulturae, (468) 1998. p. 449-454

Authors

Jorunn Børve Mekjell Meland

Abstract

No abstract has been registered

Academic – Rain cover protection against cracking of sweet cherries. The effect on fruit ripening.

Jorunn Børve, Mekjell Meland

Acta Horticulturae, (468) 1998. p. 455-458

Authors

Jorunn Børve Mekjell Meland

Abstract

No abstract has been registered

Lecture – Coinoculation of callus of a resistent and a susceptible Norway spruce clone with Ceratocystis polonica and Heterobasidion annosum

Harald Kvaalen, Halvor Solheim

In: Delatour, C., J.J. Guillaumin, B. Lung-Escarmant & B. Marcais (eds.): Proceedings of the 9th International Conference on root and butt rot of forest trees, pp. 444-445. Carcans-Maubuisson, France, Sept. 1-7, 1997, 1998.

Authors

Harald Kvaalen Halvor Solheim

Abstract

No abstract has been registered

Lecture – Coinoculation of callus of Norway spruce clones

Halvor Solheim, Harald Kvaalen

Proceedings of the 7th International Congress of Plant Pathology, Edinburgh, 9-16 August, 1998, 1998.

Authors

Halvor Solheim Harald Kvaalen

Abstract

No abstract has been registered

Lecture – Genetic variation among clones and families of Norway spruce in resistance to Heterobasidion annosum and Ceratocystis polonica and its relations to other traits

Halvor Solheim, Tore Skrøppa

Proceedings of the 9th International Conference on root and butt rot of forest trees. Carcans-Maubuisson, France, Sept. 1-7, 1997, 1998. 445

Authors

Halvor Solheim Tore Skrøppa

Abstract

No abstract has been registered

Poster – Genetic variation among families and clones of Norway spruce in resistance to Heterobasidion annosum and Ceratosystis polonica

Halvor Solheim, Tore Skrøppa

Joint meeting of Nordic Group for the Management of Genetic Resources of Trees and Nordic Arboretum Council, Honne, biri. 25.06.1998 - 27.06.1998

Authors

Halvor Solheim Tore Skrøppa

Abstract

No abstract has been registered

Academic – Growth and virulence of Ceratocystis rufipenni and three blue-stain fungi isolated from the Douglas-fir beetle

Halvor Solheim, Paal Krokene

Canadian Journal of Botany, 76 1998. p. 1763-1769

To document

Authors

Halvor Solheim Paal Krokene

Abstract

No abstract has been registered

Academic – Growth and virulence of mountain pine beetle associated blue-stain fungi, Ophiostoma clavigerum and Ophiostoma montium

Halvor Solheim, Paal Krokene

Canadian Journal of Botany, 76 1998. p. 561-566

To document

Authors

Halvor Solheim Paal Krokene

Abstract

No abstract has been registered

Academic – Vegetation and soil biota response to experimentally-changed nitrogen inputs in coniferous forest ecosystems of the NITREX project

Andries W. Boxman, Kai Blanck, Tor Erik Brandrud, ...

Forest Ecology and Management, 101(1-3) 1998. p. 65-79

To document

Authors

Andries W. Boxman Kai Blanck Tor Erik Brandrud B. A. Emmett Per Gundersen Rene F. Hogervorst O. Janne Kjønaas Hans Persson Volkmar Timmermann

Abstract

Enhancement of the atmospheric N deposition is a serious threat for the structure and function of ecosystems. Here we evaluate the ecological effects of excess N with respect to changes in vegetation and soil biota in a series of experiments along a N gradient across Europe. The aim of this project (NITREX: N saturation EXperiments) is to assess the risk of N saturation and the reversibility of N saturation. At the experimental sites with a low-to-moderate input, N was added (n = 3), while at sites with a high input, N was removed by means of a transparent roof (n = 4). The experiments started between 1989 and 1991. Across the N gradient a positive correlation was found between the N concentration in deposition or soil solution with the N concentration in the needles and in general a negative correlation with the base cations K and Mg. In the N-addition plots there was a tendency towards a decreasing nutrient status of the needles, whereas at one site N-removal led to an improvement. Addition of N hardly affected fine-root biomass production, whereas signs of growth increase were recorded when the input was reduced. Tree growth was accelerated upon input reduction at two of three sites. Manipulation of N input did not alter the decomposition rate, although significant differences between sites were noted. Manipulation of the N input hardly affected the biomass of fungi and bacteria, but a negative relation between the N-addition and part of the soil fauna may be present among sites.

Lecture – Acquired resistance to a pathogenic blue-stain fungus in Norway spruce

Paal Krokene, Erik Christiansen, Halvor Solheim, ...

In: Proceedings of the 7th International Congress of Plant Pathology, Edinburgh. 9-16 August, 1998, 1998.

Authors

Paal Krokene Erik Christiansen Halvor Solheim Alan A. Berryman Vincent R. Franceschi

Abstract

No abstract has been registered

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