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
Forfattere
Svein EilertsenSammendrag
Konsekvensutredningen utreder direkte og indirekte virkninger og konsekvenser for reindrifta i utredningsområdet for vern. I tillegg inneholder rapporten en fylkesdelplan for reindrift innenfor et utvidet utredningsområde. Vurderingene er gjort for både landskapsvernområde og nasjonalpark samt 0-alternativet (ikke vern). Deler av utredningsområdet har svært stor verdi for reindrift. Oppsummert gir både mildt vern (landskapsvernområde) og strengt vern (nasjonalpark) middels negative konsekvenser. De negative konsekvensene for reindrifta kan avbøtes dersom foreslåtte endringer i verneforskrift gjennomføres.
Forfattere
Annbjørg Øverli Kristoffersen Mikkel Bakkegard Bernt Olav HoelSammendrag
Field experiments were carried out on three representative soils, to evaluate the effect of various starter fertilizers, together with different rates of band placed phosphorus (P), on nutrient uptake and yield of spring barley (Hordeum vulgare L.) and spring wheat (Triticum aestivum L.). The starter fertilizers were placed in the immediate vicinity of the seed, while the band placed P was placed at about 5 cm below the seeds and spaced at 25 cm between alternate seed rows. As starter fertilizer, monoammonium phosphate (MAP), calcium nitrate (CAN), ammonium nitrate (AN) and triple superphosphate (P20) were compared. In both species, effects of starter fertilizer on P uptake were most marked early in the growing season. At GS 13 application of 20 kg P ha-1 as MAP increased the P uptake by 50 % in barley and by 35 % in wheat, compared to no seed-placed nutrients. In grain, the increase in P content was 8 % for both species. The higher P uptake at GS 13 was supported by observations of higher plant vigour in the treatments with either P20 or MAP as starter fertilizer. The use of N only as starter fertilizer did not increase the vigour of the plants. Band placement of P also gave more vigorous plants in spring barley. The grain yield increased on the silty clay loam and on the silt soil when starter fertilizer was applied, especially with the use of MAP. Smaller and non-significant yield differences were found when starter fertilizer was used on the loam soil. No delay or reduction of emergence was observed with starter fertilizer. Therefore, on soils where root growth or nutrient uptake becomes limited during the first weeks after sowing, application of starter fertilizer is recommended in Norway to both spring barley and spring wheat. Crops grown on silty soils seem to have an especially high demand for easily available P given as starter fertilizer.
Sammendrag
Fondazione Minoprio
Forfattere
Arne SæbøSammendrag
Rogaland i utvikling
Sammendrag
Utvalg av trær i grøntanlegg
Sammendrag
Utvalg av trær i grøntanlegg
Sammendrag
Utvalg av trær i grøntanlegg I. Stressfaktorer.
Sammendrag
Asiatiske trebukker- på vei til Norge?
Forfattere
Liv Synnøve Sognnes Gustav Fystro Samson ØpstadSammendrag
Cultivation and utilisation of peat soil are connected with several problems related to its high water content, weak soil skeleton, low bearing capacity, poor thermal properties and insufficient soil aeration. The problems have become even more pronounced with the increasing weight of agricultural machinery and more frequent harvesting. Also, peat soil is prone to sinking and disruption by frost. Reduced infiltration makes the most productive grass loose in the competition with other inferior types of grass and weeds. During the period 1978"1995, a long-term field trial was conducted on highly decomposed peat soil in order to investigate the impact of adding mineral materials to improve soil characteristics and increase grass yield. Generally, addition of both shell sand and moraine soil improved the physical properties of the soil and grass production. The first nine years, shell sand (400 m3 ha-1) was most efficient. Thereafter, moraine soil (400 and 800 m3 ha-1) seemed most beneficial. This study indicates that additions of shell sand or moraine soil to peat are appropriate methods to improve and conserve the physical properties and cropping potential of these vulnerable soils.
Forfattere
Arne SæbøSammendrag
Kompost og slam til juletre