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
Sammendrag
To study physiological and biochemical effects of demethylation inhibitor (DMI) fungicides on non-target insects, larvae of the cabbage moth, Mamestra brassicae L., were exposed orally to propiconazole, (R,S)-1-[2-(2,4-diclophenyl)-4-propyl-1,3-dioolan-2-ylmetyl]-1H-1,2,4-triazole (100, 200 and 600 mg L−1) and fenpropimorph, (±)-cis-4-[3-(4-tert-butylphenyl)-2-methylpropyl] 2,6-dimethylmorpholinc (10, 100, 200 and 600 mg L−1) in a semi-synthetic diet. Ten mg L−1 of fenpropimorph reduced larval weight and induced in vitro glutathione S-transferase activity. Reduced larval and pupal growth rate, reduced survival, prolonged developmental time, and altered patterns of larval survival and adult emergence were found for one or both fungicides in at least one of the concentrations tested. The results suggest, that although the use of agricultural fungicides is generally regarded as of minor ecotoxicological consequence for insects, feeding on DMI-treated crops may influence insect fitness, and may also leave them susceptible to pesticide treatments or to residues of pesticides and other pollutants in their food. Standard methods to detect such effects should be developed for use in the environmental risk assessment of these products.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er gjennomført nedbrytningsstudier for å undersøke dehalogering av bromerte flammehemmere, polybromerte difenyleter (PBDE), tetrabrom bisfenol A (TBBPA) og heksabromsyklododekan (HBCDD) i forurensede sedimenter.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Hans Fr. Lauvstad Magnus Mo Samson ØpstadSammendrag
I Jølster er det gjort registreringar for å talfeste verditap etter borkgnag av hjort i ung skog. Hjort gjer skade på ung gran ved å gnage bork. Dei fleste skadar kjem i samband med sterke snøfall og langvarig snødekke, og/eller lengre periodar med låg temperatur som gjer at hjorten søkjer næring der han oppheld seg og med bruk av minst mogeleg energi. Registrerte skadde tre i dei undersøkte bestanda varierte frå 25% til 62%.
Sammendrag
I vekstsesongen 2007 har det vore kraftige soppangrep på blad og kvistar på hengebjørk og vanleg bjørk i sørlige delar av Austlandet.
Forfattere
Arnstein Staverløkk May SæthreSammendrag
Dispersal of alien species, plant pests and other organisms through trade with living plants and plant parts increases with globalisation. Every year a significant amount of horticultural plants for use in urban landscapes and private gardens are imported to Norway from several other European countries. The last decade the amount of such import to Norway has doubled, while the resources allocated for phytosanitary control of this goods on arrival has not had a similar development. Trees and bushes for outdoor use pose a special risk for carrying unwanted stowaways since they are mostly produced outdoors in the export country and are in addition frequently exported with a lump of soil from the production site. After arrival in Norway the plants are dispersed quickly to all parts of the country where they are sold to private and official buyers. The quick handling of this material makes it easy for an organism to stay alive and have the opportunity to establish in the new environment. A study was carried out in 2006 to aiming to find out more about this trade, particularly emphasizing on identifying species of insects and arachnids that were suspected to pass through the national control system. Mattilsynet, the Norwegian Food Safety Authority, is the National Plant Protection Organization of Norway, and perform random sampling of imported plant commodities of this type. Unfortunately, there is practically no surveillance on the introduction of species that are not on the quarantine pest list, and the standard control routines fail in detecting and rejecting plant commodities that contain non-quarantine species. In this study it was mainly searched for insects and arachnids, but snails and slugs, millipedes and other organisms were also found. The plant species sampled were mostly conifers, of which Thuja sp. and Taxus sp. were the majority. Conifers turned out to be excellent in providing shelter and hiding places for small organisms. Three sampling methods were used: 1. Shaking method, 2. Visual observation and 3. Sampling of the compost fallen off the consignments during the transport. The last method added most species to the list. In only six samples of compost investigated as much as 93 different species were identified. During a short period of sampling 1193 individuals were collected travelling as stowaways mainly from Germany, Denmark and the Netherlands. 156 species were identified and additional 26 organisms were identified to the genus level.
Sammendrag
Forebyggende tiltak mot salatbladskimmel bør følges hele sesongen, mens kjemiske tiltak er aktuelle når værforholdene er gunstige for infeksjon og det er fare for smitte. Det har vist seg å være svært varierende når og hvor første angrep av salatbladskimmel oppstår. Overvåk derfor feltene nøye og sett i gang tiltak allerede ved begynnende svake angrep.
Forfattere
Bernt Hoel Hans TandsætherSammendrag
Forsøkene viste at en gangs delgjødsling til høsthvete er et meget interessant alternativ til det tradisjonelle opplegget med to ganger delgjødsling. Med dagens prisbetingelser gjelder denne konklusjonen i alle fall sorter med svak proteinkvalitet.