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.
2022
Forfattere
Anne-Grete Roer Hjelkrem Heidi Udnes Aamot Morten Lillemo Espen Sannes Sørensen Guro Brodal Aina Lundon Russenes Simon G. Edwards Ingerd Skow HofgaardSammendrag
Fusarium graminearum is regarded as the main deoxynivalenol (DON) producer in Norwegian oats, and high levels of DON are occasionally recorded in oat grains. Weather conditions in the period around flowering are reported to have a high impact on the development of Fusarium head blight (FHB) and DON in cereal grains. Thus, it would be advantageous if the risk of DON contamination of oat grains could be predicted based on weather data. We conducted a functional data analysis of weather-based time series data linked to DON content in order to identify weather patterns associated with increased DON levels. Since flowering date was not recorded in our dataset, a mathematical model was developed to predict phenological growth stages in Norwegian spring oats. Through functional data analysis, weather patterns associated with DON content in the harvested grain were revealed mainly from about three weeks pre-flowering onwards. Oat fields with elevated DON levels generally had warmer weather around sowing, and lower temperatures and higher relative humidity or rain prior to flowering onwards, compared to fields with low DON levels. Our results are in line with results from similar studies presented for FHB epidemics in wheat. Functional data analysis was found to be a useful tool to reveal weather patterns of importance for DON development in oats.
Sammendrag
Klimaendringer kan endre vekstsesongens lengde, nedbørforhold med både våte og tørre perioder og overvintringsforholdene. Dette vil kunne påvirke potensialet i planteproduksjonen. Dette faktaarket omhandler strategier for klimatilpasning av grovfôrdyrking i Nord-Norge der grovfôrbasert husdyrhold er den viktigste driftsformen i landbruket.
Forfattere
Synnøve Rivedal Samson Øpstad Åsmund Mikalsen Kvifte Berit Nordskog Brita Linnestad Liv ØstremSammendrag
Klimaendringar gir lenger vekstsesong, meir nedbør i store deler av året, fleire tørkeepisodar, meir intense nedbørsperiodar og flaum og endra vinterforhold. Dette påverkar planteproduksjonen og behov for tilpassing i ulike produksjonar og klimasoner. Dette faktaarket handlar om strategiar for klimatilpassing for grovfôrdyrking på Vestlandet.
Forfattere
Katherine Ann Gredvig Nielsen Magne Nordang Skårn Venche Talgø Martin Pettersson Inger Sundheim Fløistad Gunn Strømeng May Bente Brurberg Arne StensvandSammendrag
Det er ikke registrert sammendrag
Sammendrag
In this study, we investigated if a steam treatment program used to produce disease-free strawberry transplants has the potential to also eliminate strawberry mite (Phytonemus pallidus) and two-spotted spider mite (Tetranychus urticae). Crowns of strawberry plants collected in a commercial field, containing young, folded leaves with all life stages of P. pallidus, and strawberry leaf discs on water agar with T. urticae with non-diapausing adult females and eggs from a laboratory rearing, were exposed to warm aerated steam in a steam cabinet in a series of four experimental runs over 2 years. The steam treatments constituted of a 1-h pre-treatment with 37 °C steam followed by a 1-h recovery period at 21–25 °C, and then a main steam treatment at 44 °C for either 2, 4 (both P. pallidus and T. urticae) or 6 h (the more heat tolerant T. urticae only). After steaming, the plant material with P. pallidus or T. urticae were incubated at 21–25 °C until survival was assessed after 1–6 days, depending on the mite species and life-stage. Non-steamed plant material with mites was used as controls. The 4-h treatment killed all P. pallidus eggs, larvae and adults, and the 2-h treatment killed all individuals in all three stages except for one egg in one of the runs. There were no or minor effects of the steam treatments on T. urticae adult and egg survival. Based on these results, the tested steam treatments may be used to eliminate the strawberry mite but not the two-spotted spider mite from strawberry planting material.
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Forfattere
Trygve S. Aamlid Birgitte Henriksen John Ingar Øverland Jon Sæland Trond Gunnarstorp Erik Aaberg Harald Solberg Geir Kjølberg Knudsen Olav Langmyr Anne Friederike Borchert Victoria Stornes Moen Ove HetlandSammendrag
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Sammendrag
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Sammendrag
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