Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
1995
Forfattere
Chr. J. KøhlerSammendrag
Lukket
Forfattere
Petter SnilsbergSammendrag
Lukket
Forfattere
Halvor SolheimSammendrag
Invasion of lodgepole pine sapwood by blue-stain fungi was followed for 7 weeks afterinfestation by the mountain pine beetle, Dendroctonus ponderosae. During this period all sapwood was heavily stained blue and blue-stain fungi were always isolated close to the front of visible occlusion. Ophiostoma clavigerum and Ophiostoma montium were commonly isolated, both of which are known to be carried in the mycangia of the mountain pine beetle. Ophiostoma montium was most frequently isolated, but when both fungi were present O. clavigerum was always at the lending edge of fungal penetration. On average O. momium trailed 7.3 mm behind O. clavigerum. Other microorganisms were seldom isolated.
Forfattere
Guro BrodalSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
L. Croise François Lieutier E. DreyerSammendrag
Det er ikke registrert sammendrag
Forfattere
Anne Falk ØgaardSammendrag
Det er ikke registrert sammendrag
Forfattere
E.M. Løbersli Kåre Olav VennSammendrag
Det er ikke registrert sammendrag
Forfattere
Anders Göransson Toril Drabløs EldhusetSammendrag
Det er ikke registrert sammendrag
Forfattere
Anders Göransson Toril Drabløs EldhusetSammendrag
The effects of aluminium on plant nutrition in small birch plants (Betula pendula Roth) were investigated. By using relative addition rate (r A, g g-1 d-1) of nutrients as the growth-controlling variable, it was possible to grow the plants at very low external nutrient concentrations and to simulate plant requirements at two different fertility levels.Before aluminium addition the plants were at steady-state relative growth rate, (R G, g g-1 d-1). The two addition rates were free access of nutrients with RG 0.215 d-1, or nutrient-limited, RA and R G= 0.10 d-1.Internal concentrations of calcium and magnesium decreased with increasing Al3 conncentration in the nutrient solution while nitrogen concentrations in the plants remained unchanged or increased. It was demonstrated in both nutrition treatments that calcium and magnesium decrease per se does not reduce plant growth and that uptake has to be considered in relation to plant requirement at different growth rates. The interpretation of the effects of aluminium on Ca and Mg uptake and plant biomass development suggested that processes other than disturbances in Ca and Mg uptake are the cause of the decrease in growth.