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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.

2005

Sammendrag

This paper focuses on the cropping systems in northern European countries such as Norway and Finland. Challenges with growing, an strategies for development for "out-of-season" production are discussed.

Sammendrag

I et forsøk i Buskerud i 2002-2004 var første års frøavling av Knut engrapp 70-95% lavere ved etablering med høsthvete, erter eller bygg som dekkvekst enn ved etablering om forsommeren uten dekkvekst.

Sammendrag

Det er observert oppsvulmete skudd og kvister, som innholder larver, på rødpil. Skaden er forårsaket av en gallmygg i slekten pilegallmygg (Dasineura, syn. Rabdophaga). Larvene er lys rødgule (1,5 x 1,0 mm) og gallene dannes på 1-årige skudd. De bekjempes ved å fjerne og brenne (evt. grave ned) skudd og kvister med galler på våren og forsommeren.

Sammendrag

Søtkirsebærproduksjonen i Sør-Afrika er prega av pioner-ånd. Dyrkarane satsar stort, men har mange utfordingar slik som klimatiske avgrensingar, redusert tilgang på rett plantemateriale og plantevern-rådgjerder, og dei manglar både offentleg støtta forskings- og utviklingsprogram og rådgjeving. Økonomisk er dette likevel interessant, sidan det vert betalt gode prisar for søtkirsebær i ein periode med lite utbod av denne vara.

Sammendrag

In spring 2004 it was started a pilot project for determining the lengths of the periods of leaf wetness duration in apple orchards in a small region of commercial fruit growing in the county of Telemark in Southern Norway. In this area it is placed four automated meteorological stations (hourly values). The measurement of precipitation is made by two weather radars in pixel areas of 1x1km. In this pilot project the periods of leaf wetness duration is calculated at the 15 sites ( 15 orchards) using hourly measurements from the automated stations and the two weather radars. The quality of the measurements of precipitation from the weather radars is compared to rain gauge measurements of precipitation at the four automated stations. The concept of quality of meteorological measurements is shortly defined and discussed. Also the possibilities making the quality of the radar measurements better in the future is discussed.

Sammendrag

Adaptive traits in Picea abies (Norway spruce) progenies are influenced by the maternal temperatures during seed production. Here, we have extended these studies by testing the effects of maternal photoperiod and temperature on phenology and frost hardiness on progenies. Using eight phytotron rooms, seeds from three unrelated crosses were made in an environmental 2 x 2 factorial combination of long and short days and high and low temperatures. The progenies were then forced to cease growth rapidly at the end of the first growing season. An interactive memory effect was expressed the second growth season. Progenies from high temperature and short days, and from low temperatures and long days, started growth later in spring, ceased shoot growth later in summer, grew taller and were less frost hardy in the autumn than their full siblings from low temperatures and short days, and from high temperatures and long days. Norway spruce has developed a memory mechanism, regulating adaptive plasticity by photoperiod and temperature, which could counteract harmful effects of a rapidly changing climate.