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.
2004
Forfattere
Eivind VangdalSammendrag
Under omsetninga av plommer er svinnet vurdert til kring 20%. Dette er frukt som ikkje vert seld fordi ho er overmogen, rotna eller fysiske skader. Men i tillegg letnar frukta frå ho vert hausta og fram til forbrukaren. Dette vekttapet skuldast m.a. forbrenning av sukker i andingsprosessane og direkte fordamping. Tapet kan reduserast med god kjøling, modifisert atmosfære pakningar og god luftråme. Plommesortane Souffriau og Reeves har lite vekttap etter hausting. Avalon er mellom sortane som letnar mykje. Vekttapet for Avalon er tre gonger så stort som for Reeves.
Sammendrag
This study presents empirical insight into organic and conventional cash crop farmers" perceptions of risk and risk management strategies, and identifies socio-economic variables linked to these perceptions. The data originate from a questionnaire survey of farmers in Norway. The results indicate that organic farmers perceived themselves to be less risk averse than conventional farmers. For both groups, crop prices and yield variability were the two top rated sources of risk, followed by institutional risks. The two groups evaluated risk management strategies quite similarly; favoured strategies were good liquidity and to prevent and reduce crop diseases and pests. The farmers" evaluation of sources of risk and choice of risk strategies depended on various socio-economic variables. The importance of institutional risks implies that policy makers should be cautious about changing policy capriciously and they should consider strategic policy initiatives that give farmers more long-term reliability.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Reidun PommerescheSammendrag
Surface-active spiders were sampled from a ley and two adjacent field margins on a dairy farm in western Norway, using pitfall traps from April to June 2001. Altogether, 1153 specimens, representing 33 species, were found. In total, 10 species were found in the ley, 16 species in the edge of the ley, 22 species in the field margin "ley/forest" and 16 species in the field margin "ley/stream". Erigone atra, Bathyphantes gracilis, Savignia frontata and Collinsia inerrans were the most abundant species in the ley. C. inerrans was not found in the field margins. This species is previously recorded only a few times in Norway. Diplocephalus latifrons, Tapinocyba insecta, Dicymbium tibiale, Bathyphantes nigrinus and Diplostyla concolor were most abundant in the field margin "ley/ forest". D. latifrons, D. tibiale and Pardosa amentata were most abundant in the field margin "ley/ stream", followed by E. atra and B. gracilis. The present results were compared to results from ley and pasture on another farm in the region, recorded in 2000. A Detrended Correspondence Analyses (DCA) of the data sets showed that the spider fauna from the leys were more similar, independent of location, than the fauna in ley and field margins on the same locality. The interactions between cultivated fields and field margins according to spider species composition, dominance pattern and habitat preferences are discussed.
Forfattere
Annette Folkedal Schjøll Christian BrevigSammendrag
In Norway, a web-based warning system called VIPS has been developed under a national government funded programme for reduced risk of pesticides used in agriculture. VIPS is a collaboration project between the Norwegian Crop Research Institute, Plant Protection Centre and the Norwegian Agricultural Extension Service. The aim of VIPS is to give open access to all the information needed for farmers to reduce their reliance on pesticides. VIPS calculates warnings for more than 70 weather stations for several pests and diseases in selected fruits, vegetables and cereals. Registered users may adjust the climatic data used in the models and register field observations to get private warnings and use the system to record farm-practices. VIPS is unique in several aspects: " A general user-interface for all crops and all pests and diseases; the user gets a quick overview of which pests to look out for. " Warnings are site specific and linked to an authorized weather station which supplies validated meteorological data. The extension service supplies the validated biological data necessary to run the models. " The presentation is layered under the weather stations of each county. First level gives information of danger (red), possible danger (yellow) and no danger (green) for each model (past five days/coming five days). The next 3 levels give information of the specific model, historical data and exact values of the input parameters used in the models for the calculations.
Forfattere
Ingerd Skow Hofgaard Birgitte Henriksen Åshild Ergon Hilde Kolstad Yalew Tarkegne Helge Skinnes Anne Marte TronsmoSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Maja Cuvardic Steinar Tveitnes Tore Krogstad Peder LombnæsSammendrag
Det er ikke registrert sammendrag
Forfattere
Dag RøenSammendrag
Rubinstep" og "Rubinola" har synt seg lovande i førstprøving ved Bioforsk Njøs. Vi har no fleire nye sortar frå dei tsjekkiske foredlingsprogramma under utprøving.