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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1997

Academic – Improved Farm Management Tools in Norway

K. Knapskog, H. Romarheim, Lars Johan Rustad

Journal of International Farm Management, 2(1) 1997

Authors

K. Knapskog H. Romarheim Lars Johan Rustad

Abstract

No abstract has been registered

Academic – Influence of temperature on development, fecundity and survival of the cabbage moth Mamestra brassicae (L.) (Lep., Noctuidae) in relation to the improvement of forecasting and control methods

Nina Johansen

Journal of Applied Entomology (JAE), 121 1997. p. 81-88

Authors

Nina Johansen

Abstract

Developmental time and survival of eggs, larvae, pupae and adult females of the cabbage moth, Mamestra brassicae (L.) (Lepidoptera: Noctuidae) were investigated at different temperatures within the range of 5 to 23oC. In addition, the influence of temperature during the larval period on the weight of the succeeding pupae was studied, as well as the effect of temperature on fecundity of adult females. The lower developmental thresholds (Tb) and thermal requirement (DD) were established for all developmental stages and the larval instars using linear regression analysis. Tb and DD were 8.6°C and 75 degree-days for eggs, 5.4°C and 496 degree-days for the total larval period, 7.2°C and 304 degree-days for pupae, and 5.0°C and 56 degree-days for adult females, respectively. Pupal mortality was low at all temperatures. The survival of eggs and larvae was highest at 18oC, whereas mortality was 100% at 8.5oC. Larval mortality was highest in the first instar and decreased with increasing age. Pupae gained the highest weight when the larvae were reared at 18oC, and decreased with declining temperature. Temperature had no significant effect on total fecundity or fertility. Fecundity was basically unimodal distributed at all temperatures. At low temperatures the egg deposition period was markedly prolonged.

Report – Inoculum thresholds for cereal seed borne pathogens

Guro Brodal

Norwegian Agricultural Inspection Service, 1997. 34 p.

Editors

Guro Brodal

Abstract

No abstract has been registered

Academic – Inoculum thresholds for cereal seed borne pathogens

Guro Brodal, H Røsok Bye, H. Skuterud

Inoculum thresholds for cereal seed borne pathogens. 1997.

Authors

Guro Brodal H Røsok Bye H. Skuterud

Abstract

No abstract has been registered

Lecture – Intercalibration course for northern Europe on crown condition assessment

Dan Aamlid, Richard Horntvedt

Aktuelt fra Skogforsk, 10/97 1997. 3-10

Authors

Dan Aamlid Richard Horntvedt

Abstract

No abstract has been registered

Lecture – International forest policy issues and their information needs

R. Paivinen, Birger Solberg

In: Proceedings of the 7th annual IBFRA conference, 1997.

Authors

R. Paivinen Birger Solberg

Abstract

No abstract has been registered

Lecture – Is 12°C the upper critical temperature for release of winter dormancy in birch buds?

Tor Myking

Symposium on climatic change effects on northern terrestrial and freshwater ecosystems, p. 35Arktikum, Rovaniemi, Finland. 18th - 20th September 1997, 1997.

Authors

Tor Myking

Abstract

No abstract has been registered

Lecture – Isolation, cloning and characterization of cDNA sequences encoding potential defence related proteins from pathogen infected Norway spruce roots

Carl Gunnar Fossdal, Praveen Sharma, Anders Lönneborg

In: 5th International Congress of Plant Molecular Biology, Singapore. Abstract, pp. 1325, 1997. 1325

Authors

Carl Gunnar Fossdal Praveen Sharma Anders Lönneborg

Abstract

No abstract has been registered

Lecture – Logging contractor viability in western Norway

Dag Fjeld

Aktuelt fra Skogforsk, 9/97 1997. 25-26

Authors

Dag Fjeld

Abstract

No abstract has been registered

Lecture – Lyse kloster hovedgård - management for the preservation of biodiversity

Bernt-Håvard Øyen

Aktuelt fra Skogforsk, 9/97 1997. 27

Authors

Bernt-Håvard Øyen

Abstract

No abstract has been registered

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