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.
1998
Forfattere
Helge Sjursen Arild AndersenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Innføring om plantenes vekst og utvikling og oversikt over de viktigste skadene og skadegjørerne i jord- og hagebruksnæringen i Norge
Forfattere
Lita Greve Sverre KobroSammendrag
Det er ikke registrert sammendrag
Forfattere
T Edland Trond Hofsvang Arild Sletten Arne Stensvand T Amundsen R Langnes Dag-Ragnar Blystad Jan Netland J Ystaas Solveig HaukelandSammendrag
Skade- og nyttedyr i frukthagar, deira kroppsbygnad, struktur og funksjon, utvikling og skade. Bestemmingsnøklar. Plantesjukdommar. Skade- og mangelsymptom. Norsk tekst til 72 fargeplansjar
Forfattere
Lars Olav Brandsæter Jan Netland Richard MeadowSammendrag
Det er ikke registrert sammendrag
1997
Forfattere
Karl ThunesSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Nina JohansenSammendrag
Developmental time and survival of eggs, larvae, pupae and adult females of the cabbage moth, Mamestra brassicae (L.) (Lepidoptera: Noctuidae) were investigated at different temperatures within the range of 5 to 23oC. In addition, the influence of temperature during the larval period on the weight of the succeeding pupae was studied, as well as the effect of temperature on fecundity of adult females. The lower developmental thresholds (Tb) and thermal requirement (DD) were established for all developmental stages and the larval instars using linear regression analysis. Tb and DD were 8.6°C and 75 degree-days for eggs, 5.4°C and 496 degree-days for the total larval period, 7.2°C and 304 degree-days for pupae, and 5.0°C and 56 degree-days for adult females, respectively. Pupal mortality was low at all temperatures. The survival of eggs and larvae was highest at 18oC, whereas mortality was 100% at 8.5oC. Larval mortality was highest in the first instar and decreased with increasing age. Pupae gained the highest weight when the larvae were reared at 18oC, and decreased with declining temperature. Temperature had no significant effect on total fecundity or fertility. Fecundity was basically unimodal distributed at all temperatures. At low temperatures the egg deposition period was markedly prolonged.
Forfattere
Nina JohansenSammendrag
Det er ikke registrert sammendrag
Sammendrag
The subfamily ground midges (Lestremiinae) has been poorly studied in Fennoscandia. Until quite recently (1986) only eight species of this group was known from this area. However, the number of species recorded has increased considerably the few last years. This article surveys new and old records of ground midge from Fennoscandia. The survey is based on a new material collected in 49 localities in various parts of Fennoscandia, and on records in previous publications. A list of altogether 73 species of ground midge is presented, including 25 species which are new to Finland, Norway or Sweden.