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
Three Norwegian prototypes of the Danish weed module were evaluated at three efficacy target levels: medium, low and high. Seven fields trials were carried out in spring barley in 2003. In 2004 one oat, five spring wheat and three spring barley trials were conducted. The dose rates recommended by the medium efficacy prototype varied from 30 to 100% of the standard dose. On average doses were reduced by 38%, though there was no significant difference in weed control compared to high efficacy prototype. One of the 100% dose incidents was due to drought stress and the other to the occurrence of Galium aparine and large plants of volunteer oil seed rape. Use of the high efficacy prototype resulted in no reduction compared to the standard herbicide dose. The treatment options from the low efficacy prototype showed an average herbicide reduction of 75% compared to the standard doses. This resulted in a significantly poorer weed control compared to the other prototypes. Weed covarage at harvest did not vary significantly between prototypes and did not exceed 6% compared to 20% in the untreated plots. There were no significant yield differences between prototypes in spring wheat and barley. The results from the validation trials demontrated that there was no risk associated with the use of the medium efficacy prototype in spring cereals. The low efficacy prototype seemed to be safe regarding the yield, but weed control was probably not satisfying and some seed dispersal could be expected. In cereal mono cropping, however, limited seed dispersal could be acceptable.
Forfattere
Dordi Kjersti MogstadSammendrag
Evaluering av forvaltningsplan for gjess i Vega kommune, Nordland
Forfattere
Paul ShimmingsSammendrag
Evaluering av forvaltningsplan for hvitkinngås i Herøy kommune
Forfattere
Lars Henrik Kristiansen Dordi Kjersti Mogstad Paul Shimmings Arne FollestadSammendrag
Evaluering av forvaltningsplaner for gås i Norge basert på en større spørreundersøkelse av berørte gårdbrukere. Videre en gjennomgang av ulike tiltak som er gjennomført for å redusere konflikten mellom gås og landbruk, herunder både forebyggende tiltak og jakt. Beskrivelse av status mht lokale forvaltningsplaner for de ulike gåseartene i forskjellige fylker og kommuner i hele landet.
Forfattere
Tore SkrøppaSammendrag
Det er ikke registrert sammendrag
Sammendrag
Economic externalities of mitigating measures to reduce sheep losses to carnivores are not sufficiently addressed in Norwegian nature management. Evaluating such measures involves a "scale” problem: outfield (i.e. open range) grazing sheep have quite small home ranges, large carnivores from hundred to several thousand km2. Because these ranges are a different order of magnitude, exposure to mitigating measures taken in any sheep home range area might influence predatory behaviour outside that area. These external effects impact on society, the environment and other farmers and could outweigh any advantages. Scale consideration is of crucial importance in designing field research projects to explore such issues.
Forfattere
Espen Govasmark Arvid Steen Anne Kjersti Bakken Turid Strøm Sissel Hansen Espen GovasmarkSammendrag
Innhaldet av sink, jern og mangan i hausta grovfôravling på norske økologiske husdyrbruk vart halde saman med normene for forsyning av desse minerala til drøvtyggarar. Ut frå normene var kan hende forsyninga av sink for dårleg.
Forfattere
Govasmark, Espen Steen, Arvid Bakken, Anne Kjersti Strøm, Turid Hansen, SisselSammendrag
To obtain a general picture of the herbage zinc, iron and manganese concentrations and their relation to dietary requirements of ruminants on organic farms, we analysed soil and herbage samples from four regions in Norway. The soil median Zn, Fe and Mn concentrations were 0.18, 13 and 0.84 mg/L, respectively. The herbage median (10th-90th percentile) Zn, Fe and Mn concentrations (mg/kg) in herbage in the first cut were 19 (14-34), 50 (36-88), 34 (22-86) and in the second cut 21 (16-37), 84 (52-171) and 66 (
Forfattere
Astrid Johansen Mats HøglindSammendrag
Delrapport til UMB, med fokus på ressursgrunnlaget for mjølkeproduksjon på beite og faktorar ved beitet og bruken av beitet som verkar inn på mjølkeyting, mjølkekvalitet og økonomi. Det er peika på framtidig forskingsbehov.
Sammendrag
Det er ikke registrert sammendrag