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
Ingerd Skow HofgaardSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingerd Skow HofgaardSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingerd Skow HofgaardSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingerd Skow HofgaardSammendrag
The increased occurrence of Fusarium toxins during recent years in Norwegian cereals, especially deoxynivalenol (DON) in spring wheat and DON and T-2/HT-2 toxins in oats (see abstract by Hofgaard et al), is a serious challenge for the cereal industry and farmers. Contamination levels above regulatory or advisory maximum limits have frequently been detected. In Norway, many farmers bring their grain directly to the buyer at harvest, and, in a time and cost perspective, it is not realistic to test all grain lots for mycotoxin content by chemical analysis. In order to reduce the risk of cereal grain lots with unacceptable Fusarium toxin content entering the feed and food chain, a three-step screening strategy has been developed in close cooperation with the cereal industry. 1 Toxin risk (DON, T-2/HT-2) in cereal fields will be predicted by models based on information on climatic conditions and agronomic/cultivation practice. 2 Grain from "high-risk" fields will be analysed for mycotoxins by a rapid "on-site" test method (lateral flow tests) before the grain enters the silo/storage/mill. 3 Samples from lots with toxin levels close to the defined maximum limits (based on analyses in step 2) can be forwarded to chemical analyses for precise decision of the mycotoxin concentrations.
Forfattere
Anne-Marte Tronsmo Ingerd Skow HofgaardSammendrag
The aim of the present project was to obtain better understanding of what is the source of primary inoculum for snow mould caused by M. nivale; to understand how inoculum of M. nivale survives from spring to fall, and from year to year, to understand how climatic conditions affects the potential inoculum by monitoring symptoms on plants, occurrence of the fungus and growth characteristics in vitro of strains sampled from snow melt and through summer and autumn. Snow mould symptoms and the occurrence of M. nivale in leaves and stems of grasses sampled from golf greens and foregreens was reduced during the growth season. M. nivale could also be isolated from locations without visible symptoms. Despite a lower isolation rate in autumn, M. nivale was again isolated in some of the originally locations the following spring. The M. nivale isolation rate was similar from sites located on greens compared to foregreens, and from greens located at more sunny sites compared to more shadowy located greens. We conclude that the fungus seem to survive from year to year within the same locations on greens and foregreens.
Sammendrag
I "Fusariumprosjektet" ved Bioforsk Plantehelse har vi i løpet av en 4 års periode (2006-2009) samlet inn kornprøver fra partier med norskprodusert havre og vårhvete med tilhørende opplysninger om klima og dyrkningsmessige forhold. Kornprøvene er videre analysert for innhold av 17 ulike mykotoksiner. Ved å sammenstille og analysere data og informasjon om de ulike kornprøvene, har vi kartlagt ulike faktorer som kan ha betydning for utvikling av mykotoksiner i kornet. Dataene er videre brukt for å utvikle varslingsmodeller for Fusarium-mykotoksiner i korn, og for utprøving av ulike hurtigmetoder som er utviklet for å måle innhold av mykotoksiner i korn.
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.
Sammendrag
The increased occurrence of Fusarium toxins during recent years in Norwegian cereals, especially deoxynivalenol (DON) in spring wheat and DON and T-2/HT-2 toxins in oats (see abstract by Hofgaard et al), is a serious challenge for the cereal industry and farmers. Contamination levels above regulatory or advisory maximum limits have frequently been detected. In Norway, many farmers bring their grain directly to the buyer at harvest, and, in a time and cost perspective, it is not realistic to test all grain lots for mycotoxin content by chemical analysis. In order to reduce the risk of cereal grain lots with unacceptable Fusarium toxin content entering the feed and food chain, a three-step screening strategy has been developed in close cooperation with the cereal industry. 1 Toxin risk (DON, T-2/HT-2) in cereal fields will be predicted by models based on information on climatic conditions and agronomic/cultivation practice (see abstract by Elen et al). 2 Grain from "high-risk" fields will be analysed for mycotoxins by a rapid "on-site" test method (lateral flow tests) before the grain enters the silo/storage/mill. 3 Samples from lots with toxin levels close to the defined maximum limits (based on analyses in step 2) can be forwarded to chemical analyses for precise decision of the mycotoxin concentrations.
Sammendrag
I "Fusariumprosjektet" ved Bioforsk Plantehelse har vi i løpet av en 4 års periode (2006-2009) samlet inn kornprøver fra partier med norskprodusert havre og vårhvete med tilhørende opplysninger om klima og dyrkningsmessige forhold. Kornprøvene er videre analysert for innhold av 17 ulike mykotoksiner. Ved å sammenstille og analysere data og informasjon om de ulike kornprøvene, har vi kartlagt ulike faktorer som kan ha betydning for utvikling av mykotoksiner i kornet. Dataene er videre brukt for å utvikle varslingsmodeller for Fusarium-mykotoksiner i korn, og for utprøving av ulike hurtigmetoder som er utviklet for å måle innhold av mykotoksiner i korn.
Forfattere
Anne-Marte Tronsmo Ingerd Skow HofgaardSammendrag
Rosa snømugg, som forårsakes av Microdochium nivale er den viktigste grassjukdommen på golfbaner i nordiske land. Hos oss er soppen mest kjent som årsak til vinterskade, men i andre land kan den være et stort problem i vekstsesongen. Den kalles da Fusarium patch eller Microdochium patch. I dette prosjektet har vi studert hvordan soppen overlever fra vår til høst.