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.
2006
Forfattere
Gunnhild Jåstad Berit Hovland Olav Opedal Sigrid Mogan Olav Sørum Endre Bjotveit Dag RøenSammendrag
Teger er eit viktig skadedyr i både økologisk og konvensjonell eple- og pæreproduksjon. Det er få tilgjengeleg tiltak mot teger i økologisk fruktdyrking. Forsøk med ulike direkte tiltak viste at NeemAzal er eit effekt tiltak mot teger i eple. Resultat frå ulik handsaming av undervegetasjonen som eit førebyggjande tiltak gav svært ulike resultat; i nokre felt førde hyppig slått av undervegetasjonen til mindre skade, medan slått i andre felt førde til meir skade. Eit pilotforsøk med insektpathogene sopp mot teger viste lovande resultat.
Sammendrag
Denne artikkelen beskriver forsøk med ulike sopparter (isolert fra jordbærplanter) som kunne ha et potensiale som nyttesopper (biologisk kontroll) mot gråskimmel i jordbær. Epicoccum nigrum og Aureobasidium pullulans ga redusert råtning (gråskimmel) et år, mens ingen av de potensielle nyttesoppene reduserte råtningen året etter.
Forfattere
Solveig HaukelandSammendrag
The black vine weevil (Otiorhynchus sulcatus) is an important pest in many crops in several countries worldwide. The adults feed on the leaves of strawberries, rhododendrons, azaleas and many other ornamental plants. Indoors, O. sulcatus can infest begonias, ferns, cyclamins, and other common container plants. Adult feeding does not seriously affect the plants, it is the larval feeding on roots of host plants that causes the most serious plant injury. Larvae may also girdle the main stem below the soil line. Leaves will yellow and plants may be stunted or die. O. sulcatus weevils are difficult to control once established because of their nocturnal behaviour and the subterranean habits of the larvae. In strawberries chemical control using a pesticide against the adult weevils after harvest is the most common control method today, however the most effective pesticides will shortly no longer be available and there are few alternative pesticides on the market. Fortunately there are Entomopathogenic nematodes (EPN) that can be used to control the soil dwelling larvae and in Europe there are several products on the market comprising three species (Heterorhabditis bacteriophora, H. megidis, and Steinernema kraussei). The use of these nematodes has shown to be quite successful in potted plants (in nurseries), whereas in field grown crops such as strawberry they are still not consistently effective. In this presentation results from a number of field trials using H. megidis and S. kraussei against O. sulcatus larvae infesting field grown strawberry will be presented and discussed.
Forfattere
Solveig HaukelandSammendrag
Det er ikke registrert sammendrag
Forfattere
Anne-Kristin LøesSammendrag
Det er ikke registrert sammendrag
Forfattere
Mikael Frisk Maud Göthe-Lundgren Kurt Jörnsten Mikael Rönnqvist Mikael RönnqvistSammendrag
Transportation planning is an important part of the wood flow chain in forestry. There are often several forest companies operating in the same region and co-ordination between two or more companies is rare. However, there is an increasing interest in collaborative planning as the potential savings are large, often in the range 5-15%. A key question is how savings should be distributed among the participants. In this paper we investigate a number of possibilities based on economic models including Shapley value, the nucleolus, separable and non-separable costs, shadow prices and volume weights. We also propose a new allocation method based on finding as equal relative profits as possible among the participants. A case study including eight forest companies is described and analyzed.
Forfattere
Mikael Frisk Kurt Jörnsten Maud Göthe-Lundgren Mikael Rönnqvist Mikael RönnqvistSammendrag
Transportation planning is an important part of the wood flow chain in forestry. There are often several forest companies operating in the same region and co-ordination between two or more companies is rare. However, there is an increasing interest in collaborative planning as the potential savings are large, often in the range 5-15%. A key question is how savings should be distributed among the participants. In this paper we investigate a number of possibilities based on economic models including Shapley value, the nucleolus, separable and non-separable costs, shadow prices and volume weights. We also propose a new allocation method based on finding as equal relative profits as possible among the participants. A case study including eight forest companies is described and analyzed.
Forfattere
Mikael Rönnqvist Mikael Frisk Kurt Jörnsten Maud Göthe-Lundgren Mikael RönnqvistSammendrag
Transportation planning is an important part of the wood flow chain in forestry. There are often several forest companies operating in the same region and co-ordination between two or more companies is rare. However, there is an increasing interest in collaborative planning as the potential savings are large, often in the range 5-15%. A key question is how savings should be distributed among the participants. In this paper we investigate a number of possibilities based on economic models including Shapley value, the nucleolus, separable and non-separable costs, shadow prices and volume weights. We also propose a new allocation method based on finding as equal relative profits as possible among the participants. A case study including eight forest companies is described and analyzed.
Forfattere
Anne-Kristin Løes Johanne SchjøthSammendrag
Det er ikke registrert sammendrag
Forfattere
Anne-Kristin Løes Johanne E. SchjøthSammendrag
The manuscript is a part of a report on Eruopean research in organic food and farming, published by the ERA net CORE Organic in 2006. 11 European countries which have had significant research programmes in organic food and farming have contributed to the report. For each country, the history and organisiation of this type of research is described, as well as details about completed and on-going research programmes and their funding, research facilities, research strategies and scientific education within organic food and farming.