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.
2008
Forfattere
Bernt Olav HoelSammendrag
Gjødslingsstrategier og tilpasning av gjødslingspraksis til økte gjødselpriser
Forfattere
Hugh RileySammendrag
Dyrkere stiller ofte spørsmål om betydningen av kraftige nedbørsepisoder for utvasking av Ngjødsel, ettersom graden av utvasking avgjør behovet for supplering ved delgjødsling. En interaktiv beregningsrutine på Bioforsk.no gjør det mulig å få svar på dette spørsmålet.
Forfattere
Erik JonerSammendrag
Litt om nanoteknologi Nanomaterialer generelt Nanopartikler spesielt: Hva er det? / Naturlige kontra produserte nanopartikler / Hvordan oppfører de seg? Hvorfor bekymre seg? Hva er allerede på markedet? Hva vet man om toksisitet? Hva skjer mht vurderinger og lovgivning i andre land?
Forfattere
Grete Lene SerikstadSammendrag
Bruk av nanoteknologi og kunstig framstilte nanopartikler øker. Det kan være aktuelt å benytte produkter med nanopartikler i økologisk landbruk, men kunnskapen om eventuelle negative bieffekter er foreløpig svært begrenset. Mange mener derfor at med bakgrunn i "føre var"-prinsippet bør en utsette bruken av slike produkter i økologisk landbruk og produksjon.
Sammendrag
In Norway, exterior wood structures have traditionally, nearly exclusively been made of untreated Norway spruce (Picea abies (L.) Karst) and pressure treated Scots pine (Pinus sylvestris L.). In recent years there has been a tendency that other wood species, like various Norwegian hardwoods or imported species, have been used in exterior above ground applications, often not surface treated. For several wood species, especially hardwoods, information regarding the durability in use class 3 is limited. Most information given in EN 350 part 2 is based on testing of the heartwood in ground contact. The test procedures for above ground test prescribed in European standards, both laboratory and field tests, have some weaknesses regarding natural durability testing. Hence, some new methods for accelerated above ground testing have been put forward. The main objectives of this project are to evaluate natural durability of Norwegian and some imported wood species for above ground applications, and to study various methods for assessing decay in wood. The project material and methods used in the project, and the results from double layer tests after one year of exposure has earlier been described, Flæte et al. (2006). This paper presents the results of the weight and MOE loss in small samples after about 3 years exposure above ground.
Sammendrag
Three unsprayed coffee farms (farm 1, 2 and 3) were studied for the natural occurrence of the insect pathogenic fungus Beauveria bassiana in Hypothenemus hampei populations throughout the rainy season of 2004 (July-November) and 2005 (July-December). B. bassiana infections were found during most sampling dates in both years, on all three farms. The B. bassiana infection levels were higher in 2005 than in 2004 with mean prevalence of 12.1 % and 2.7%, respectively. No consistent significant differences in infection level between farms were found in any of the years. B. bassiana infection levels fluctuated widely throughout the season, and peaked at 13.5% on farm 3 in 2004 and at 44.0% on farm 1 in 2005. The H. hampei population was significantly higher in 2004 than in 2005, with 6.9% of the berries infested in 2004 and only 0.7% in 2005. In both years, the H. hampei infestation level was significantly higher on farm 2. No consistent significant differences in H. hampei infestation levels were found between sampling dates on any of the farms. H. hampei infestation levels fluctuated throughout both seasons, and peaked at 15.3% on farm 2 in 2004 and 2.2% on farm 2 in 2005. No consistent density dependent correlation between H. hampei infestation level and B. bassiana infection level was found. Correlations between climatic conditions and R bassiana or H. hampei were not found. (C) 2007 Elsevier Inc. All rights reserved.
Forfattere
Roger RosethSammendrag
Naturbaserte rensemetoder og grøntplanlegging
Forfattere
Trond MæhlumSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Wenche E. Dramstad Frauke HofmeisterSammendrag
Det er ikke registrert sammendrag