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.
1999
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Two inbred rapeseed lines differing in aliphatic glucosinolate content and the reciprocal hybrids between them were grown under greenhouse conditions until seed maturity at three levels of sulphur supply. Heterosis was confirmed for seed yield and yield related traits irrespective of sulphur supply. Seeds harvested from the F1-hybrid plants were all high in aliphatic glucosinolates. The line low in aliphatic glucosinolates yielded seeds that were lower in methionine and cysteine than the other genotypes did at all levels of sulphur supply. It was, however, not more severely affected by suboptimal supply than the line high in glucosinolates
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Potential response of forest soils to sulphur deposition in the Norwegian-Russian border area in the surroundings of the Pechenganikel smelters, the major sulphur emitters in the northern Europe, has been assessed with the PROFILE model. The release rate of base cations due to weathering range from 0.05 to 0.28 kmol(c)/ha/yr in the 0 - 50 cm soil layer, thus demonstrating the high sensitivity of the coarse and thin podzols studied. Calculated steady-state BC/Al values are significantly lower than the presumed critical value of 1, which indicate possible negative effect on vegetation through soil acidification. According to the model calculations future sulphur deposition have to be very low in order to stop the ongoing acidification and prevent vegetation damage. However, model assumptions, uncertainty in input data and critical chemical values applied implies that modelling results must be interpreted carefully
Forfattere
Dan AamlidSammendrag
Det er ikke registrert sammendrag
Sammendrag
The objective structure of parameters of soil acidity and cation exchange properties of podzols affected by the emission of the Pechenganikel factory (the Kola Peninsula) is revealed. The multiparametric analysis of soil properties and the traditional correlation analysis complement one another. They point to the complex character of interrelations between soil properties in conditions of progressing human-induced acisification.
Forfattere
Torstein KvammeSammendrag
Det er ikke registrert sammendrag
Sammendrag
A field experiment was carried out to test the hypothesis that treatment of Norway spruce trees with the Ips typographus-transmitted blue-stain fungus Ceratocystis polonica enhances tree resistance to later mass attack by this bark beetle. Twenty-five mature trees were pre-treated by inoculating a non-lethal dose of the fungus into the bark, while 18 trees served as untreated controls. Three and a half weeks after treatment a bark beetle attack was initiated by attaching dispensers with I. typographus pheromone to the tree trunks. A significantly larger proportion (67%) of the control trees than of the pre-treated trees (36%) were killed by the beetle attack. The result is discussed in relation to recent results regarding defence mechanisms in Norway spruce trees.
Forfattere
Paal KrokeneSammendrag
Det er ikke registrert sammendrag