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
Kirsty McKinnonSammendrag
Det er ikke registrert sammendrag
Forfattere
Kirsty McKinnonSammendrag
Det er ujevn kvalitet på oppalsjordprodukter. Produsenter av oppalplanter til økologisk produksjon gir positive tilbakemeldinger på produkter. Det krever imidlertid prøving og feiling for å finne frem til tilfredsstillende driftsopplegg.
Forfattere
Kirsty McKinnonSammendrag
Det er ikke registrert sammendrag
Forfattere
Ellen Merethe MagnusSammendrag
Det er ikke registrert sammendrag
Forfattere
May-Guri Saethre Trond Hofsvang Ignace Godonou Tepa Yotto Ghislain T.Sammendrag
Aphids are recognised worldwide as economically important pests in vegetable production systems. In Benin, aphids are key biotic constraint to vegetable production. Research and information on aphid species and their natural enemies associated with vegetable agro-ecosystems is limited and poorly documented in Benin. Therefore, a study was undertaken at 31 vegetable production sites across Benin to identify the aphid species, their host plants, and their natural enemies.
Forfattere
Trond HofsvangSammendrag
Vi har litt over 200 arter av stankelbein i Norge. Mest iøynefallende er stankelbeina når de voksne insektene på ettersommeren svermer rundt utelampa eller trekker inn i hus. Larvene av noen ganske få arter kan gjøre stor skade på planter. De voksne er helt ufarlige.
Forfattere
Lars Nesheim Oddbjørn Kval-Engstad Kjell VastveitSammendrag
Føremålet med denne utgreiinga var å lage ei samanstilling av forsøksresultat, erfaringar og klimaeffektar for tiltak innanfor bruk av husdyrgjødsel og jordarbeiding til eng og åker. Det er lagt vekt på tiltak som er lite granska i Norge, og som påverkar klimagassane lystgass og metan. Utgreiinga omtalar tiltak som kan redusere klimagassutsleppa frå landbruket i vesentleg grad. Innanfor kvart av emna husdyrgjødsel og jordarbeiding til eng og åker er det sett opp kva behov det er for ny kunnskap. I utgreiinga har vi også foreslått konkrete opplegg for demonstrasjons- og pilotprosjekt.
Forfattere
Lars NesheimSammendrag
A method of mixing seeds of different crops and liquid animal manure is called slurry seeding or wet seeding. The method is so far more used for seeding forage crops than for grasses and clover. A Norwegian company has developed a system for adding and mixing seeds into animal slurry at the liquid manure spreader. The seed-enriched slurry is either applied on the surface by a trailing hose (band spreading) or injected in the soil. Thus, the process combines manure application, seeding of forage or cover crops, and aeration tillage if the slurry is injected. The method may also contribute to an increased sward age. The last three years the system of slurry seeding has been investigated at different sites in Norway, from dry inland areas to coastal areas with a high annual precipitation. Slurry seeding by use of the injector or the band spreader was compared to direct drilling of seeds only, and full renovation of the swards including ploughing. Where the sward was killed by herbicides, slurry seeding resulted in about the same DM yields and botanical composition as traditional renovation. At swards not destructed by chemical treatment the results were more variable, particularly at the first cut.
Forfattere
Atle Wibe Anna-Karin Borg-Karlson Jerry Cross Lene SigsgaardSammendrag
One of the major pests on cultivated strawberry in northern part of Europe is the strawberry blossom weevil, Anthonomus rubi. The weevils deposit eggs in the flower buds before it sever the buds from their stalks. This may lead to a direct loss of crop of more than 50%. To develop effective plant protection method against A. rubi funnel traps baited with the sex aggregation pheromone and plant volatiles were used for trapping weevils in the fields. The sex pheromone blend used in the study was a mixture of Grandlure I, Grandlure II and Lavendulol (ratio 1:4:1). Plant volatiles emitted by the strawberry plants were collected using SPME and identified by GC/MS. These chemical analyses identified several compounds present in different quantities. The sex pheromone blend and selected plant volatiles were tested in fields either separately or in different mixtures. The field trials were carried out during a three year period where the last year aimed to optimise the mixture used in the previous years by adding more test compounds and testing the most potent compound at different concentrations. To improve insect catch rates modified traps were also tested. The study sites were in Norway, Denmark and in the UK. General high catch rates were achieved at three different study sites in Norway due to high weevil density. The results from these fields, supported by the results from the fields with lower catch rates, were in accordance with each other. The main finding was that traps baited with some identified plant volatile compounds and the sex pheromone blend increased the catch rates compared to traps bated with single a plant compound or the sex pheromone blend alone. The results show also that the concentration of the plant volatiles relative to the pheromone concentration is important for attracting weevils to the traps. This study has shown that it is important to bait insect traps with both sex aggregation pheromones and plant volatiles at the correct level to achieve significant catch rates of A. rubi. Hopefully, the results will generate knowledge important for developing new plant protection method for strawberry without using insecticides.
Sammendrag
Det er ikke registrert sammendrag