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.
2007
Forfattere
Patrik Flisberg Bertil Lidén Mikael RönnqvistSammendrag
Det er ikke registrert sammendrag
Forfattere
Michael G. Angstreich Moses M. ZinnahSammendrag
This paper constitutes a formative look at how local knowledge and western science, both social and natural, might be integrated for the benefit of smallholder agriculture in developing countries. The question addressed is: How can research and extension be more responsive to the needs of local farmers and what are some possible elements of a responsive approach? A comparison of local knowledge and western science is given. Constructivist, experiential learning approaches such as Participatory Technology Development (PTD), Participatory Rural Appraisal (PRA), Farmer Field School (FFS) and Promoting Farmer Innovation (PFI) that use the farm as a learning system and farmer-driven on-farm trials are among the qualitative and quantitative methodologies that can contribute to the knowledge and needs of researchers, extensionists and farmers. Using case studies from East and West Africa and a review of the literature, this paper addresses issues related to strengthening effective linkages between farmers, extension professionals and researchers.
Forfattere
Espen Govasmark Mark G. GrimmettSammendrag
An existing laboratory procedure for selenium analysis using open-vessel wet digestion and liquid chromatographic fluorescence determination was modified for use with microwave digestion. The proposed microwave digestion method eliminated the hazards associated with the use of HCIO4 while maintaining excellent recoveries of selenium. A 2-step HNO3/H2O2 digestion procedure was developed. Digested samples were derivatized with 2,3-diaminonaphthalene, and the resultant piazselenol complex was measured fluorometrically using a liquid chromatograph. Measured values were in agreement with 9 different certified reference materials. The detection limit for this method was 0.54 ng Se/g tissue (3 s), and the calibration curve remained linear (r2 = 0.9968) up to 2 mg Se/g.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
River floods may cause considerable damage. Water management strategies intend tomoderate or mitigate the severe effects of extreme discharge events. In this context,techniques for the detection and attribution of changes is of crucial importance. Extremeflood events seem to occur more frequently in recent decades in central Europe.It is anticipated that climate change and weather regime shifts may contribute to this...
Forskningsrapport – A Quick Scan of the Norwegian Control System for Animal Welfare
Svein Ole Borgen
Forfattere
Svein Ole BorgenSammendrag
Det er ikke registrert sammendrag
Forfattere
Arnstein Staverløkk May-Guri Saethre Eline Benestad HågvarSammendrag
The invasive ladybird, Harmonia axyridis Pallas 1773, is recorded for the first time in Norway. The specimen was found on horticultural plants imported from Aalsmeer in the Netherlands to Oslo, Norway. H. axyridis originates from East-Asia. The species is known to be a voracious predator on aphids and has been extensively used as a biological control agent in both North America and Europe. The later years, however, a number of negative impacts on the environment and biodiversity have been reported. The species was assessed as a potential bio-control agent for use in Norwegian greenhouses in 2001. The outcome of the assessment was negative with respect to import and commercial use in Norway. It was concluded that H. axyridis might survive and become established outdoors and thereby pose a risk to the environment. Recent experiences from the UK have shown that H. axyridis compasses several of the traits characterizing a successful invasive alien species. The record of this species in Norway may only be the first in a number of such, as it is likely that this species will survive outdoors, at least in the southern parts of Norway.
Forfattere
Arnstein Staverløkk May-Guri Sæthre Eline HågvarSammendrag
Det er ikke registrert sammendrag
Forfattere
Trygve S. Aamlid Stein Jørgensen Lars Olav Breivik Ove Hetland Åsmund Bjarte Erøy Åge Susort Anne A. SteensohnSammendrag
Gjenlegg til økologisk engsvingelfrøeng bør sås samtidig med dekkveksten. Ni dagers utsettelse av såinga (til etter ugrasharving) førte til mer ugras (bl.a. balderbrå) og 11% reduksjon i frøavlinga i første engår. Virkningen av ulike dekkvekster varierte fra felt til felt, men i middel ble det oppnådd større frøavling ved gjenlegg uten dekkvekst eller i grønnfôr av bygg/ert, sammenlikna med gjenlegg i bygg, vårhvete eller erter til modning.
Forfattere
Svein SolbergSammendrag
Det er ikke registrert sammendrag