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.
2009
Forfattere
Reidun Pommeresche Sissel Hansen Anne-Kristin LøesSammendrag
Det er ikke registrert sammendrag
Forfattere
Reidun Pommeresche Sissel Hansen Anne-Kristin LøesSammendrag
Earthworm casts were collected from two soil depths by litterbags in an organic arable crop rotation, and compared to bulk soil. The aim was to study if casts from geophagous (soil eating) earthworm species (Aporrectodea caliginosa and A. rosea) contained more plant available nutrients than bulk soil, as is well known for detritivorous species that eats plant residues. The average earthworm abundance for three seasons was 229 earthworms m-2 and the average biomass (fresh weight) was 73 g m-2. Significantly higher concentrations were found of all nutrients in casts as compared to bulk soil. On average for the two sites, these differences corresponded to amounts of kg ha-1 y-1, 5.6 for P, 8.9 for K, 5.3 for Mg, 144 for N and 2542 for C. The study indicates that earthworm casts are valuable nutrient sources for plants even in soils where the earthworm fauna is dominated by geophagous species.
Forfattere
Håkon BorchSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
The aim of organic farming husbandry is to be entirely based on an organically produced diet. Pea is the most commonly cultivated protein rich crop in organic agriculture in Norway. However other high protein crops with complementary properties are needed to meet the nutritional demands in feeds for ruminants, pigs and poultry. An ongoing study in Bioforsk aims to develop cultivation practices on nutrient supply for organic oilseed crops and to establish knowledge on the feed quality of organically grown oilseed crops used as protein feed. It appears that spring turnip rape (Brassica rapa L. var. oleifera) and Camelina (Camelina sativa L.) can both be successfully cultivated with different levels of supplied nitrogen and sulphur. The nutrient value of organic spring turnip rape seems to be equivalent to conventional protein crops. Camelina can be an alternative in organic production, due to fewer problems with harmful pests compared with the traditional oilseed crops rape and turnip rape. Oilseed cake of turnip rape has higher protein and mineral content than the seed, and can be an interesting addition in feed ration for both ruminants and poultry, especially in combination with field pea.
Sammendrag
Organic husbandry aims to be based on 100 % organic feed. Currently there is a lack of protein feed for production of concentrates. Protein from oilseed crops is thought to complement the protein quality of peas (Pisum sativum L.). The experiences with oilseed crops in organic production are limited. With the ongoing project "Organic protein feed and edible oil from oilseed crops" the main aim is to obtain more knowledge of cultivation practices and the quality of the feed obtained from the crops. Spring turnip rape (Brassica rapa L. var. oleifera) and Camelina (Camelina sativa L.) are both successfully cultivated with different levels of supplied nitrogen and sulphur. Camelina seems to be an interesting new crop for organic production. It seems difficult to obtain good establishment and overwintering of winter rape (Brassica napus L. var. oleifera) and winter turnip rape. The nutrient value of organic spring turnip rape and winter turnip rape seems to be equivalent to conventional protein crops.
Forfattere
Arne Stensvand Maria-Luz Herrero Håvard Eikemo Andrew Dobson Belachew Asalf Tadesse Anne Marte Tronsmo David Gadoury Robert C. Seem Mary Catherine Matteson Heidenreich Mary Jean WelserSammendrag
Mjøldogg (Podosphaera macularis) er ein viktig sjukdom i jordbær og ser ut til å verta eit aukande problem med meir dyrking i plasttunnelar. Denne artikkelen omhandlar nokre resultat frå eit 4-årig prosjekt om jordbærmjøldogg finansiert av Forskingsrådet.
Forfattere
Lars Tørres HavstadSammendrag
I prosjektet SAFE-SEED er det på Bioforsk Landvik utviklet tester for å vurdere spirekraften hos frø av timotei og rødkløver. Kimen Såvarelaboratoriet AS er nå i ferd med å ta i bruk disse testene i sine analyserutiner. For frøfirmaene vil slike spirekrafttester være et viktig hjelpemiddel til å forutsi de ulike frøpartienes levetid på lager.
Forfattere
Nina TrandemSammendrag
Omtale av epleviklermodellen som Marc Trapman har lagd i RIMpro. Denne er nå lagt ut på VIPS for å få erfaringer, men den er ikke validert for norske forhold.
Forfattere
Ricardo Holgado John Ingar Øverland Bonsak HammeraasSammendrag
To arter av rotgallnematoder, Meloidogyne hapla og M. ardenensis, er vanlige å finne på friland i Norge. Sommeren 2008 ble det funnet en tredje art, M. naasi, på skadet hvete i Vestfold. Funnene er de første av denne rotgallnematoden i Norge og Skandinavia. Den er også funnet på flere ugras. M. naasi er en viktig skadegjører på bygg i tempererte områder.