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
Bent Nielsen Jens G. Hansen Hans Pinnscmidt Ragnhild Nærstad Arne Hermansen Vinh Hong Le Asko Hannukkala Lars BødkerSammendrag
Release and infectivity of Phytophthota infestans sporangia under field conditions
Forfattere
Adam ParuchSammendrag
I samarbeid med tre polske universitet, jobber Bioforsk for å finne frem til nye og rimeligere løsninger for rensing av avløpsvann i avsidesliggende strøk i Polen. Hensikten er å redusere eutrofiering av overflatevann. I Bioforsk har vi lang erfaring med både anlegging og overvåking av små anlegg, men disse systemene må tilpasses polske forhold. Bioforsk samarbeider med Universitetet i Gdansk, Gdansk Teknologiske Universitet og Universitetet i Lodz. Løsningene må også tilpasses med hensyn til geologi og klima. En spesiell utfordring ligger i å utvikle forfilter løsninger da tradisjonell infiltrasjon ikke er akseptert som metode.
Forfattere
Trond MæhlumSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Clemens Reimann Belinda Flem Arnold Arnoldussen Peter Englmaier Tor Erik Finne Friedrich Koller Øystein NordgulenSammendrag
Le Roux et al. consider the approach that led to the above article as trend-setting. However, according to Le Roux et al. the data are unfortunately ‘‘inappropriately interpreted”. It is appreciated that le Roux et al. took the effort to study the original data and attempted a re-interpretation along the lines of an impressive list of publications which they claim have been ignored by Reimann et al. (2008). Here the achievements and shortcomings of their alternative interpretation will be discussed in view of the facts substantiating the conclusions of the original article......
Forfattere
Clemens Reimann Belinda Flem Arnold Arnoldussen Peter Englmaier Tor Erik Finne Øystein NordgulenSammendrag
The recent article entitled ‘‘The biosphere: A homogenizer of Pb-isotope signals` has attracted considerable interest from other researchers in this area. According to the critical comments by Bindler and Shotyk, the authors have supposedly neglected a substantial body of the literature and especially the reported temporal changes in Pb-isotope ratios in a variety of sample materials. They conclude that the urban transect is not appropriate for defining natural variation, and state that a substantial body of research indicates a limited uptake of Pb in plants.......
Sammendrag
Artikkelen beskriver resultatene fra en kartlegging av insektmiddelresistens hos bomullsmellus (Bemisia tabaci) i Nord-Vietam i 2005-2007 . Artikkelen er skrevet på Vietnamesisk, med engelsk sammendrag.
Forfattere
Hugh RileySammendrag
Use of mineral NPK fertilizer and animal manure has been compared since 1922 in two trials on morainic loam soil at a former research station, Møystad, near Hamar, southeast Norway. Yield results for the period 1983-2003 were reported recently (Riley 2007). During this time cattle manure at rates of 20, 40 and 60 Mg ha-1 yr-1 gave 81%, 87% and 90%, respectively, of the yields obtained using 100 kg N ha-1 yr-1 and adequate P and K supply, in mineral fertilizer. Approximate balance between the supply and takeoff of N, P and K was achieved at the lowest manure rate, but higher manure rates resulted in large surpluses of all three nutrients. In order to study possible residual effects, no manure has been applied from 2004 to 2007, and mineral fertilizer has been withheld from one of the NPK treatments in each trial. The residual effects are evaluated in relation to both control plots that have not been fertilized since before 1922 and plots that have received 100 kg N, 25 kg P and 120 kg K ha-1 yr-1. Cropping in these four years was 2nd-4th year timothy/meadow fescue ley followed by oats. No residual effects of the mineral fertilizer treatments were found. Previous use of manure, on the other hand, has given large residual effects, with only a slight decline over the four years. These responses in relation to the use of mineral fertilizer and the residual supply of N, P and K from manure, estimated from its uptake in crops, will be presented at the seminar.
Sammendrag
Four populations of pollen beetle (Meligethes aeneus) was tested for susceptibility to lambda-cyhalotrin and tiacloprid in 2008. Resistance to pyrethroids was found in 2 populations from locations near Hamar, both in field tries and bioassays. One population from Vestfold has low resistance. The results was concistent with what was found in 2007. One population from Østfold had to high control mortality to draw any conclusion. These beetles were collected very late in the season. Low resistance was found in the same district in 2007. One population from Hamar had lower susceptibility to tiacloprid than the other populations.
Forfattere
Johanne E. Schjøth Anne-Marte Tronsmo Leif SundheimSammendrag
Visual assessment of maize ears and Fusarium spp. isolation from kernels were compared to determine resistance in 20 Zambian maize hybrids. The mean percentage Fusarium spp. isolations in non-inoculated field experiments varied between years (12-62%). Symptomless infection by Fusarium spp. had domination over symptomatic. More than 95% of the Fusarium species isolated were F. vertcillioides. A disease severity index and the percentage of visibly diseased, discoloured and damaged kernels did not differentiate hybrids with respect to Fusarium spp. ear rot under natural conditions. Artificial inoculation provided a good estimate of Fusarium spp. resistance based on visual symptoms in a year of moderate disease pressure, but not in a year of high disease pressure. The percentage Fusarium spp. isolations showed significant differences between hybrids after inoculation, and it was significantly negatively correlated with the number of days from planting to midsilk. Parental line L5522 contributed to hybrid resistance to Fusarium. The hybrids MM 701-1 and MM 752 were the most resistant among the 20 hybrids.