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.
2007
Sammendrag
I et infiltrasjonsanlegg renses vannet via mekaniske, kjemiske og biologiske prosesser ved at avløpsvannet filtreres gjennom naturlig lagrede jordmasser. Etablering av infiltrasjonsanlegg forutsetter sandholdige jordmasser med evne til å holde tilbake aktuelle forurensningsstoffer. Infiltrasjonsanlegg anbefales i områder definert som følsomme og normale i forurensningsforskriften fordi dette er en driftssikker løsning med svært god renseevne. I mange tilfeller vil infiltrasjon også være den økonomisk rimeligste løsningen for å tilfredsstille kommunenes krav til rensing av avløpsvann. Infiltrasjonsanlegg har stor utbredelse både i Norge og andre land.
Forfattere
Martin Gierus Hendrika Anette van Dorland Anjo Elgersma Michael Kreuzer Ralf Loges Erich M. Poetsch Harm J. Smit Håvard Steinshamn Fridhelm Taube Michael WachendorfSammendrag
Forage legumes are valuable alternatives for mineral N fertilizers in grassland, due to their N fixing capacity and the assumed increase in forage quality of the sward. However, forage quality of binary swards may differ in response to site and legume species. The objective of the present study, carried out within the frame of the COST Action 852, was to identify the influence of legume species growing in contrasting environments on legume proportion, crude protein (CP) and metabolisable energy (ME) contents. At each of the five participating sites the experiment was carried out as a completely randomized block design with three replications. Four legume species were tested: white clover, red clover, alfalfa and birdsfoot trefoil. The first cut was performed in spring after first node detection in grass and repeated 30±3 days afterwards (5-cut system). Legume proportion varied largely from 5% to 79%, with birdsfoot trefoil showing the lowest legume proportion in the swards across sites. Alfalfa had the highest N contents at all sites. Results show that, especially in ME content, legumes are less responsive to variation due to contrasting environments than the companion grass.
Sammendrag
Norwegian agriculture is totally dependent on a safe supply of seed of winter-hardy timothy varieties. The annual seed consumption varies depending on the extent of winter damages, particularly in northern Norway, and the average seed yield varies with weather and harvest conditions in the seed-producing districts in the southeastern and central part of the country. To buffer these variations, seed companies always keep stocks corresponding to 50-100 % of the average annual seed consumption. Such large stocks are risky to maintain as seed lots will loose germination over time. Our objective was to elucidate the effect of seed harvest time and seed storage location on the longevity of timothy seed. In 2003, timothy ‘Grindstad’ was combined directly on 2, 5 or 8 August corresponding to a seed moisture content (SMC) of 34, 27 and 20 %, respectively. After harvest the seed was dried to 10-11 % SMC. Germination analyses were accomplished 3, 15, 26 and 38 months after seed harvest; the three latter after splitting each seed lot into four sub-lots that were stored either in a conditioned seed store (4ºC, 30% RH), or in unconditioned warehouses at there climatically different locations. While seed harvest time had no effect on germination three months after harvest, differences became increasingly evident as time went by. After 38 months’ storage, seed stored in the conditioned store or in the warehouse at the continental location Tynset germinated, on average for harvest times, 15-16 units better than seed stored in the warehouse at the coastal location Vaksdal; and seed lots harvested at 20 % SMC germinated, on average for storage locations, 24 units better than seed harvested at 37 % SMC. While it has long been documented that direct combining at high SMC may damage seed germination, there has been less awareness that this damage may not manifest itself until after a certain storage period.
Forfattere
Jon Atle Repstad Trygve S. Aamlid Lars Tørres HavstadSammendrag
Norwegian agriculture is totally dependent on a safe supply of seed of winter-hardy timothy varieties. The annual seed consumption varies depending on the extent of winter damages, particularly in northern Norway, and the average seed yield varies with weather and harvest conditions in the seed-producing districts in the southeastern and central part of the country. To buffer these variations, seed companies always keep stocks corresponding to 50-100 % of the average annual seed consumption. Such large stocks are risky to maintain as seed lots will loose germination over time. Our objective was to elucidate the effect of seed harvest time and seed storage location on the longevity of timothy seed. In 2003, timothy `Grindstad" was combined directly on 2, 5 or 8 August corresponding to a seed moisture content (SMC) of 34, 27 and 20 %, respectively. After harvest the seed was dried to 10-11 % SMC. Germination analyses were accomplished 3, 15, 26 and 38 months after seed harvest; the three latter after splitting each seed lot into four sub-lots that were stored either in a conditioned seed store (4ºC, 30% RH), or in unconditioned warehouses at there climatically different locations. While seed harvest time had no effect on germination three months after harvest, differences became increasingly evident as time went by. After 38 months" storage, seed stored in the conditioned store or in the warehouse at the continental location Tynset germinated, on average for harvest times, 15-16 units better than seed stored in the warehouse at the coastal location Vaksdal; and seed lots harvested at 20 % SMC germinated, on average for storage locations, 24 units better than seed harvested at 37 % SMC. While it has long been documented that direct combining at high SMC may damage seed germination, there has been less awareness that this damage may not manifest itself until after a certain storage period.
Sammendrag
The effects of photoperiod (12, 13, 14, 15 or 16 h), day-temperature (12, 15, 18, 24 or 27"C) and night-temperature (6, 9 or 12 oC) and their interactions on flower and inflorescence emergence were investigated by exposing 4 week old runner planst of strawberry cvs. Korona and Elsanta during a period of 3 weeks. A daily photoperiod of 12 or 13 h resulted in the highest numbers of plants with emerged flowers. A photoperiod of 14 h or more strongly reduced this number, while no flowers emerged at a photoperiod of 16 h. Plants exposed to photoperiods of 12 or 13 h flowered earlier and had longer flower trusses. A day-temperature of 18 oC and a night temperature of 12 oC were optimal for plants to emerge flowers and resulted in shortest time to flowering. A night temperature of 6 oC strongly reduced the number of plants that emerged flowers, especially when combined with lower day-temperatures. Photoperiod and temperature had no effect on the number of inflorescences, all flowering plants produced on average one inflorescence. The number of flowers on the inflorescence increased with decreasing day temperature and when photoperiod was raised fra 12 to 15 h. In general, `Korona" was more sensitive to photoperiod and temperature than `Elsanta", and had a lower optimal day-temperature for flower emergence. Results of this experiment may be used to produce high quality plant material or to define optimal conditions when combining flower induction and fruit production.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Liv Guri VelleSammendrag
Informasjonsfaldar om utegangarsau. Faldaren tek føre seg delar av undersøkingane Bioforsk Vest Fureneset har gjort på utegangarsau på Lyngheisenteret på Lygra.
Forfattere
Ronald BjøruSammendrag
Det er ikke registrert sammendrag
Forfattere
Nina JohansenSammendrag
En oversikt over hvilken informasjon om plantevernmiddelresistens som kan finnes hos EPPO ble presentert.
Sammendrag
Inn på tunet er tilrettelagte tilbud på gårdsbruk, rettet mot enkeltmennesker og/eller grupper. Målsettingen med Inn på tunet er primært å bidra positivt til helse, utvikling og trivsel for den enkelte bruker. Tilbudene bygger på samarbeid med oppvekst-, utdannings-, helse- eller sosialsektoren, og omfatter aktiviteter som bygger på både gårdens og bondens ressurser. Gårdbrukeren er direkte involvert i tilbudet, enten som leder eller i en assisterende rolle. Gårdsmiljøet åpner for mange muligheter for aktiviteter, der stell av dyr og planter, drift av skogen og pleie av kulturlandskapet, vedlikehold av maskiner og bygningsmasse utgjør aktivitetsgrunnlaget. Men det er også en rekke muligheter som ikke nødvendigvis har noe direkte med gårdsdriften å gjøre. Det kan være aktiviteter som snekring, husflid, baking og produksjon av ulike produkter - for eksempel ved. Norsk institutt for landbruksøkonomisk forskning (NILF) har undersøkt Inn på tunet (IPT) gjennom en telefonundersøkelse og økonomiundersøkelse blant tjenesteytere. Telefonundersøkelsen hentet erfaringer fra alle fylker, hvor vi tok for oss omfang og daglig drift av IPT fra Fylkesmannens Landbruksavdeling (FMLA) sin side. Økonomiundersøkelsen av IPT-aktiviteten omfattet åtte gårdsbruk for regnskapsåret 2005. Her kartla vi inntekter, kostnader, investeringer og arbeidsforbruk i forbindelse med IPT. Gårdene ble plukket ut i Møre og Romsdal, Sør- og Nord-Trøndelag Seks av gårdsbrukene ble i tillegg intervjuet om IPT-aktiviteten. Intervjuene omfattet motiver for oppstart, erfaringer fra etablering og drift, og gårdbrukerens egen vurdering av aktiviteten. Gårdene vi har undersøkt har tilbud rettet både mot skole/utdanning og mot psykisk helse. […]