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.
2022
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Priyanka Trivedi Linards Klavins Anne Linn Hykkerud Jorens Kviesis Didzis Elferts Inger Martinussen Maris Klavins Katja Karppinen Hely Häggman Laura JaakolaSammendrag
Det er ikke registrert sammendrag
Forfattere
Priyanka Trivedi Linards Klavins Anne Linn Hykkerud Jorens Kviesis Didzis Elferts Inger Martinussen Maris Klavins Katja Karppinen Hely Häggman Laura JaakolaSammendrag
Cuticle is the first layer protecting plants against external biotic and abiotic factors and is responsive to climatic factors as well as determined by genetic adaptations. In this study, the chemical composition of bilberry fruit cuticular wax was investigated through a latitudinal gradient from Latvia (56°N 24°E) through Finland (65°N 25°E) to northern Norway (69°N 18°E) in two seasons 2018 and 2019. Changes in the major cuticular wax compounds, including triterpenoids, fatty acids, alkanes, aldehydes, ketones, and primary alcohols, were detected by GC-MS analysis. Generally, a decreasing trend in the proportion of triterpenoids from southern to northern latitudes, accompanied with an increase in proportion of fatty acids, aldehydes, and alkanes, in bilberry fruit cuticular wax was observed. A correlation analysis between climatic factors with proportion of wax compounds indicated that temperature was the main factor affecting the cuticular wax composition in bilberries. A controlled phytotron experiment with southern and northern bilberry ecotypes confirmed the major effect of temperature on bilberry fruit cuticular wax load and composition. Elevated temperature increased wax load most in berries of northern ecotypes. The level of triterpenoids was higher, while levels of fatty acids and alkanes were lower, in wax of bilberry fruits ripened at 18°C compared to 12°C in both northern and southern ecotypes. Based on our results, it can be postulated that the predicted increase in temperature due to climate change leads to alterations in fruit cuticular wax load and composition. In northern ecotypes, the alterations were especially evident.
Sammendrag
I rapporten blir det gjort ei vurdering av om det er mogleg med årleg oppdatering av aktivitetsdata for spreiing og lagring av husdyrgjødsel. Det faglege grunnlaget for den nasjonale faktoren for FracLEACH og utsleppsfaktorane for ammoniakktap ved spreiing av husdyrgjødsel er også vurdert. Utvida samandrag på side 6-7.
Sammendrag
In Norway, the effect of drainage on grassland yields has received little attention for decades. Low level of drainage may be a reason for low grassland production. Therefore, a drainage experiment was established in a western Norwegian ley, on a sandy silt soil with a high capacity for water storage. The plots had six and twelve meters drain spacing, as well as undrained. There were two or three cuts, and fertilization of 190 or 290 kg N yr-1 ha-1. Drainage intensity gave a small significant increase in yield. N loss in drainage water increased with drainage intensity. The yield increase is likely too small to justify drainage, but the intervention might still be worthwhile due to increased N efficiency and a more manageable risk of compaction. A precise quantification of the hydrological effects is hard due to inherent soil variability.
Sammendrag
In Norway, the effect of drainage on grassland yields has received little attention for decades. Low levels of drainage may be a reason for low grassland production. Therefore, a drainage experiment was established in a western Norwegian ley, on a sandy silt soil with a high capacity for water storage. The plots had six- and twelve-metres drain spacing, as well as an undrained treatment. For each drainage treatment there were two or three cuts per year, and fertilization of 190 or 290 kg N yr-1 ha-1. Drainage intensity gave a small significant increase in yield. N loss in drainage water increased with drainage intensity. The small herbage yield increase is unlikely by itself to justify drainage, but the drainage installation might still be worthwhile due to increased N efficiency and a more manageable risk of compaction. Precise quantification of the hydrological effects is hard to make due to the inherent soil variability.
Forfattere
Synnøve Rivedal Samson Øpstad Åsmund Mikalsen Kvifte Berit Nordskog Brita Linnestad Liv ØstremSammendrag
Klimaendringar gir lenger vekstsesong, meir nedbør i store deler av året, fleire tørkeepisodar, meir intense nedbørsperiodar og flaum og endra vinterforhold. Dette påverkar planteproduksjonen og behov for tilpassing i ulike produksjonar og klimasoner. Dette faktaarket handlar om strategiar for klimatilpassing for grovfôrdyrking på Vestlandet.