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
Charlotte Rehm Christian Guido BrucknerSammendrag
Det er ikke registrert sammendrag
Forfattere
Christian Guido Bruckner Rahul Bahulikar Peter, G. KrothSammendrag
Det er ikke registrert sammendrag
Forfattere
Sonja KlemsdalSammendrag
Interactions between species of Fusarium in mixed infections of oat and wheat kernels as measured by real-time PCR
Sammendrag
Floral induction and development requirements of a range of latitudinal and altitudinal Norwegian populations of the wild strawberry Fragaria vesca L. have been studied in controlled environments. Rooted runner plants were exposed to a range of photoperiods and temperatures for 5 weeks for floral induction and then transferred to long day (LD) at 20 degrees C for flower development. A pronounced interaction of temperature and photoperiod was shown in the control of flowering. At 9 degrees C, flowers were initiated in both short day (SD) and LD conditions, at 15 and 18 degrees C in SD only, whereas no initiation took place at 21 degrees C regardless of daylength conditions. The critical photoperiod for SD floral induction was about 16 h and 14 h at 15 and 18 degrees C, respectively, the induction being incomplete at 18 degrees C. The optimal condition for floral induction was SD at 15 degrees C. A minimum of 4 weeks of exposure to such optimal conditions was required. Although the populations varied significantly in their flowering performance, no clinal relationship was present between latitude of origin and critical photoperiod. Flower development of SD-induced plants was only marginally advanced by LD conditions, while inflorescence elongation and runnering were strongly enhanced by LD at this stage. The main shift in these responses took place at photoperiods between 16 and 17 h. Unlike all other populations studied, a high-latitude population from 70 degrees N ('Alta') had an obligatory vernalization requirement. Although flowering and fruiting in its native Subarctic environment and after overwintering in the field in south Norway, this population did not flower in the laboratory in the absence of vernalization, even with 10 or 15 weeks of exposure to SD at 9 degrees C. Flowering performance in the field likewise indicated a vernalization requirement of this high-latitude population.
Forfattere
Trond HofsvangSammendrag
Her gis en oversikt over en del sommerfuglarter som formerer seg lenger sørover i Europa, men som enkelte år migrerer nordover til Norge i store mengder.
Forfattere
Richard MeadowSammendrag
The practice of IPM in horticultural crops in Europe in the last half of the 20th century has primarily consisted of fine-tuning the use of pesticides to avoid unnecessary applications. This has led to benefits for growers, consumers and the environment. Many of the fundamental tools for this practice, the synthetic pesticides, are rapidly disappearing from the European market. At the same time, consumers are making clear choices for produce that is not treated with these pesticides. Most of the new pesticides that have appeared in the last decade, and pesticides currently under development, are less effective and/or less long-lasting in the field. These factors have been a driving force in the development of new methods of approaching pest problems in horticultural crops. There is little indication that any method alone will solve pest problems in a cropping situation.
Forfattere
Nina JohansenSammendrag
IPM of European Cornborer in Europe, use of Trichogramma
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Johannes DeelstraSammendrag
Forksjellige vanningsmetoder kan anvendes for å produsere jordbruksprodukter i tørre områder. Valg av metoden betydningen fro det totale vannforbruket og kan derfor ha betydning for jord og vannkvalitet. Overforbruk avb vann kan føre til både slatproblemer i jordsmonnet og avrenning av næringsstoffer til både hgrunnvannet og åpne vannsystemer. Effektiv bruk av vann er en nødvendighet, særlig i de områder som har knapper vannressurser og derfor er nedbørsfelt forvaltning, hvor alle partnere blir tatt med i beslutningprosessen, meget viktig. Et eksempel av problemer relatert til vannforvaltning er gitt for nilebassenget.
Forfattere
Lillian ØygardenSammendrag
Det er ikke registrert sammendrag