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.
2010
Forfattere
Andrea FickeSammendrag
Severity of leaf blotch epidemics varies annually and locally. Disease assessments between Z70 and Z85 are highly variable due to exponential increase of severity and do not consistently predict impact on yield quality and quantity
Forfattere
Ingerd Skow Hofgaard Heidi Udnes Aamot Sonja Klemsdal Marikka Jestoi Oleif Elen Guro BrodalSammendrag
During the 1980-1990"s Fusarium avenaceum, Fusarium poae, Fusarium tricinctum and Fusarium culmorum were reported as the most frequently isolated Fusarium species in Norwegian cereals. Recent years studies indicate a shift in the relative prevalence of Fusarium species. In a 6-year period from 2004-2009, researchers at Bioforsk collected about 500 grain samples of spring wheat and oats from farmers" fields in South East Norway to study the effect of environmental factors on development of Fusarium spp. and mycotoxins. Climate data was collected from the nearest weather station, and information on cultivation practice in the respective fields was registered for each grain sample. All grain samples were analyzed for Fusarium-mycotoxin content by LC-MS/MS at the Finnish Food Safety Authority. The DNA content of selected Fusarium species (F. graminearum, F. culmorum, F. avenaceum, F. poae, F. langsethiae/F. sporotrichioides) was determined by quantitative PCR (qPCR). Concentrations of deoxynivalenol (DON) above limit of detection (LOD, 50 µg/kg in oats and 45 µg/kg in spring wheat) were registered in more than 90% of the grain samples. Our data shows a trend towards an increased yearly median value of DON and 3-AcDON together with an increased occurrence of F. graminearum (DNA). In general, F. graminearum was detected at much higher levels than F. culmorum (qPCR). Concentrations of HT-2 and T-2 toxin above LOD were mainly registered in oats where more than 70% of the grain samples had a HT-2 concentration exceeding 80µg/kg. Similarly, the DNA content of F. langsethiae/F. sporotrichioides exceeded 0,1 pg per ng plant DNA in more than 70% of the oat samples, whereas this was only true in less than 5% of the spring wheat samples. As F. sporotrichioides is only sporadically found in Norwegian cereals, these results indicate F. langsethiae as the main HT-2/T-2 producer in Norwegian oats. F. avenaceum (DNA) and enniatins were detected in most grain samples indicating F. avenaceum as still being one of the most prevailing Fusarium species in Norwegian cereals. Moniliformin was detected in several of the grain samples, whereas hardly any samples contained nivalenol or diacetoxyscirpenol. Fusarenon-X, neosolaniol, fumonisin B1 and fumonisin B2 were not detected. Bioforsk has during the last 20-30 years been involved in several projects concerning Fusarium spp. and mycotoxins in Norwegian cereals. Prediction models for plant diseases (including Fusarium spp.) in cereals are today operative within the growing season in the Norwegian web-based disease decision support system, VIPS, administrated by Bioforsk http://www.vips-landbruk.no/. In an ongoing project (2010-2014) we focus on the effect of selected cultivation regimes on survival of Fusarium spp. in plant debris and development of mycotoxins in harvested grains of oats and spring wheat. Results will be used as a basis for further development of disease forecasting models, and for the development of guidelines for cultivation practice in Norway.
Forfattere
Ingerd Skow Hofgaard Guro Brodal Heidi Udnes Aamot Oleif Elen Marika Jestoi Sonja KlemsdalSammendrag
In a 6-year period from 2004-2009, about 500 grain samples of spring wheat and oats were collected from farmers" fields in South East Norway. In order to study the effect of environmental factors on development of Fusarium spp. and mycotoxins in cereal grains, climate data was collected from the nearest weather station and information on cultivation practice in the respective fields was registered for each grain sample. All samples were analyzed for 18 different Fusarium-mycotoxins by LC-MS/MS at the Finnish Food Safety Authority, and the DNA content of selected Fusarium species (Fusarium graminearum, F. culmorum, F. avenaceum, F. poae, F. langsethiae/F. sporotrichoides) was determined by quantitative PCR.
Forfattere
Ingerd Skow HofgaardSammendrag
During the 1980-1990"s Fusarium avenaceum, Fusarium poae, Fusarium tricinctum and Fusarium culmorum were reported as the most frequently isolated Fusarium species in Norwegian cereals. Recent years studies indicate a shift in the relative prevalence of Fusarium species.
Forfattere
Christer MagnussonSammendrag
Det er ikke registrert sammendrag
Forfattere
Jon Anders Stavang Eivind VangdalSammendrag
Olje og såpe er i ferd med å verte eit obligatorisk hjelpemiddel både i konvensjonell og økologisk frukt- og bærdyrking i kampen mot mange skadedyr, t.d. bladmidd i bringebær eller bladlus i søtkirsebær. Lite er kjent om kva effekt bruken av olje og såpe har på plantevekst, men ein har rekna med at det ikkje har hatt for store negative verknader på planteveksten. Det er ikkje nødvendigvis rett.
Forfattere
Audun KorsæthSammendrag
Det er ikke registrert sammendrag
Forfattere
Inger Sundheim Fløistad Lars Olav BrandsæterSammendrag
Det er ikke registrert sammendrag
Populærvitenskapelig – Om spydspissfunksjon, økologisk praksis og bærekraftig landbruk
Audun Korsæth
Forfattere
Audun KorsæthSammendrag
Bioforsk har i forbindelse med LMDs arbeid med den nye Stortingsmeldingen om norsk landbruk, laget et notat om hvilke kriterier som bør stilles til de driftsformene og den praksis som skal lede fram mot en mer bærekraftig matproduksjon.
Forfattere
Helge SjursenSammendrag
Blomsterdagen ved Norsk Landbruksmuseum ble arrangert søndag 6. juni 2010. Bioforsk Plantehelse hadde egen stand utenfor museet. I programmet inngikk bl.a. en orientering om informasjonsprosjektet "Korsmos ugrashage" i museets auditorium. Deretter ble interesserte vist rundt i Besøkshagen, som ligger ved alleen mot Ås kirke, på området til Universitetet for miljø- og biovitenskap (UMB). Det ble lagt vekt på blomstrende planter på denne tiden av året, samt morfologiske forskjeller på de store skjermplantene sløke, sibirbjørnekjeks og kjempebjørnekjeks.