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.
2006
Forfattere
Richard Meadow Annette Folkedal Schjøll Randi Seljåsen Asbjørn Torp Maxime Ferrero Stein WinæsSammendrag
Bekjempelsesmidler som har vært brukt mot kålfluene i mange tiår vil nå forsvinne fra markedet. Dette har ført med seg en kjempeutfordring i å finne nye metoder og midler for denne bekjempelsen. Et prosjekt ble startet opp i 2004 ved Planteforsk (nå Bioforsk) og Landbrukets forsøksringer (LFR) for å utforske flere metoder, inkludert nye skadedyrmidler. I tillegg er det i 2005 startet et prosjekt som er eid av Norges Gartnerforbund som tar opp samme problematikk, men med fokus mot kålrotproduksjon.
Sammendrag
Nå er furubukkarten Monochamus alternatus funnet innført til Norge i emballasjematerialet. Arten er den viktigste overføreren for den svært farlige furuvednematoden som drreper furutrær i Sørøst-Asia og Portugal.
Forfattere
Ian K. Toth L Moleleki Leighton Pritchard H Liu Sonia Humphris L Hyman Gunnhild W. Axelsen May Bente Brurberg M Ravensdale E Gilroy Paul R.J. BirchSammendrag
Det er ikke registrert sammendrag
Sammendrag
Cavity spot (Pythium spp.), liquorice rot (Mycocentrospora acerina) and crater rot (Fibularhizoctonia carotae) are important carrot diseases. Cavity spot develops during the growing season, while the latter two are post harvest diseases. Five Pythium "species" were identified as agents of cavity spot in Norway; P. intermedium, P. sulcatum, P. sylvaticum, P. violae and P. "vipa" (probably a new species). Based on unique sequence regions in the ITS, PCR primers were designed to identify the five Pythium "species" and the two post harvest pathogens. PCR detection was species-specific with no cross-reaction to other Pythium species or to other fungal isolates from carrots. At different points in the growing season, soil and carrots were sampled from farm fields in Norway. PCR assays allowed detection of pathogens in both soil and carrot tissue. PCR results from samples of soil adhering to roots late in the growing season corresponded well with the incidence of cavity spot and liquorice rot on carrots after 6 months storage. PCR assay data from soil samples taken within 14 days after sowing carrots also predicted cavity spot incidence reasonably well. There was little incidence of crater rot during the experimental period, which did not allow proper evaluation of the test for F. carotae. Commercial testing of carrot soils is now available through the company "Carrotech" and work is in progress to implement quantitative PCR.
Forfattere
Venche TalgøSammendrag
On the southwest coast of Norway there are natural stands of holly (Ilex aquifolium), but a number of different varieties of I. aquifolium and I. meserveae are also grown in bough production fields, private gardens and public parks. Except for conifers, holly is the only tree we have with green foliage during the winter in Norway. The leathery, dark green leaves with prickly spines and the red berries have made holly a popular plant for Christmas decorations. Leaf-drop/defoliation has become an increasing problem during the last decades both before and after harvest, and thus destroys the marketability. We suspect that reduced grazing has resulted in more overgrown/dense stands and hence created ideal microclimate for fungal growth. Wet foliage due to shade and restricted air movement gives the spores good conditions for germination. On investigated diseased plant material collected from holly in the period 2001-2006, a number of possible pathogenic fungi were isolated; Fusarium avenaceum, Vialaea insculpta, Nectria sp., Colletotrichum acutatum, Trochila ilicina and Diaporthe ilicis (Talgø et al. 2006). The fungi were identified morphologically mainly based on information given by Ellis & Ellis (1997). Colletotrichum was identified to species level by PCR. In the literature we find very little about what kind of damage these organisms may cause on holly. Benson & Jones (2000) say that leaf-spotting fungi on holly can cause heavy defoliation before new growth starts in the spring, but they do not mention any specific pathogen. Therefore we will run pathogenesis tests with all the fungi mentioned above to fulfil Koch"s postulate.
Forfattere
Venche TalgøSammendrag
Det er ikke registrert sammendrag
Forfattere
Venche TalgøSammendrag
Det er ikke registrert sammendrag
Forfattere
Venche TalgøSammendrag
Det er ikke registrert sammendrag
Forfattere
Venche TalgøSammendrag
Det er ikke registrert sammendrag
Forfattere
Venche TalgøSammendrag
Det er ikke registrert sammendrag