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
Hugh RileySammendrag
Mange grønnsaker har et stort N-behov for å sikre høy avling med god kvalitet. Dette kan føre til høy risiko for utvasking. Gjennom et 4-årig EU-prosjekt er det utviklet en fleksibel modell for beregning av N-gjødsling, utvasking og økonomisk utbytte i ulike vekstomløp. Modellen er ment som et planleggingsverktøy for optimalisering av vekstomløp og gjødslingsstrategier.
Forfattere
Eva SkarbøvikSammendrag
Det er ikke registrert sammendrag
Sammendrag
The prediction of infection periods for lettuce downy mildew (Bremia lactucae) is based on the assumption that spores are produced at night and released in the early morning. The divergent light conditions at Nordic latitudes might affect both sporulation and spore release. Therefore, we monitored release of B. lactucae spores in relation to the climatic conditions in lettuce fields to evaluate the performance of existing forecasting models in timing of fungicide applications for management of lettuce downy mildew in Norway. In 2005, epidemics were created at two field locations that had no previous lettuce production, and a total of 59 days of spore trapping permitted the study of spore release under natural conditions. Sporulation events were compared to predicted spore production events in Modell-Analys (MA). At the two locations, 76 % and 74 % of the spores were trapped between 08.00 and 16.00, respectively. Spore concentration icreased with decreasing relative humidity (RH), ofting coinciding with increasing solar radiation and temperature. Spore production events predicted by MA were correct at 66 % of the days. However, when the criteria for spore production were adjusted, 78 % of the days were correctly predicted.
Sammendrag
Avlingsdata for to år er presentert frå to sortsforsøk med solbærsortarmed i alt 18 sortar og eit sortsforsøk med rips med åtte sortar. Analysar av viktige kvalitetseigenskapar som fargekvalitet, C vitamin og innhald av antioksidantar er presentert for eitt år.
Sammendrag
Several models for prediction of infection periods for lettuce downy mildew (Bremia lactucae) are based on the assumption that spores are produced at night and released in the early morning. The divergent light conditions at Nordic latitudes might affect both sporulation and spore release. Therefore, during the period 2001 to 2005 a total of 13 field trials were established in late season lettuce fields to evaluate efficacy of fungicide applications made according to the models PlantPlus (PP) and Modell-Analys (MA) in Norway. Disease severity varied from 0 to 89.4 % in unsprayed control plots at harvest. Fungicide treatments had a significant effect compared to untreated control in all but two of the field trials with disease incidence over 1 % at harvest. Fungicide applications at 10-day intervals and according to PP and MA resulted in an average of 3, 2.5 and 3.3 applications, respectively. There were no significant differences in disease severity at harvest between treatments according to 10-day interval, PP and MA for any of the field trials. Epidemics were created at two field locations that had no previous lettuce production, and a total of 59 days of spore trapping permitted the study of spore release under natural conditions. Spore production events predicted by MA were correct at 66 % of the days. However, when adjusting the criteria for spore production, 78 % of the days were correctly predicted.
Sammendrag
Forsøk med varsling av salatbladskimmel i perioden 2001-2005 ble presentert
Forfattere
Trygve S. Aamlid Hans Martin Hanslin Bjørn Molteberg Åge Susort Anne Steensohn Frank Enger Palle HaalandSammendrag
Twelve fertilizer/biostimulant products or product families were compared with mineral fertilizer in three two-year trials on USGA greens and sand-based football fields in southern Norway. Within each trial, all treatments were received the same amount of total nitrogen per year. Substitution of some of the mineral fertilizer with Gro-Power® improved turfgrass quality in one trial. Otherwise, the organic fertilizers and biostimulants producted results that were equal to or inferior to the control treatment. In conclusion, fertilization of sand-based golf greens and football fields ought to be based on light and frequent applications of mineral fertilizer throughout the growing season. Organic fertilizers and biostimulants can, at best, be supplements to such a fertilizer program.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Bjørn Molteberg Trygve S. Aamlid Gudni Thorvaldsson Anders Hammarlund Frank Enger Tatsiana Espevig Åge Susort Daniel NordSammendrag
This report gives the results of the sowing year 2007 from testing of turfgrass varieties for use on Scandinavian putting greens. The total project period is 2007-2010.
Forfattere
Laura Kirwan Andreas Lüscher Maria Teresa Sebastia J Finn Rosemary P Collins C Porqueddu Helga Helgadottir O. H. Baadshaug Caroline Brophy C Coran Sigridur Dalmannsdottir I Delgado A. Elgersma Mick Fothergill Bodil Frankow-Lindberg B Golinski P Grieu A.M. Gustavsson Mats Höglind O Huguenin-Elie C Iliadis Marit Jørgensen Z Karyotis Tor Lunnan M Malengier V Meyer D Nyfeler P Nykanen-Kurki J Parente H J Smit U Thumm John ConnollySammendrag
Det er ikke registrert sammendrag