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
Helen FrenchSammendrag
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Forfattere
Johannes Deelstra Hans Olav Eggestad Arvo Iital Viesturs JansonsSammendrag
This paper shows the results of an analysis on hydrology with the objective to obtain information about the dominating flow processes and the impact these have on nutrient and soil loss. The analysis has been carried out on a number of agricultural dominated catchments in Norway, Estonia and Latvia. Runoff and nutrient loss is measured using automated discharge measurement structures in combination with water sampling systems. In almost all cases the catchments are operated as part of national monitoring programmes. The analysis was carried out both on hourly - and average daily discharge values
Forfattere
Johannes DeelstraSammendrag
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Forfattere
Per Stålnacke Ståle Haaland Eva Skarbøvik Stein Turtumøygard Thor Endre Nytrø John-Rune Selvik Tore Høgåsen Torulv Tjomsland Øyvind Kaste Knut Erik EnerstvedtSammendrag
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Forfattere
Markus Hoffman Johannes Deelstra Niklas BergmanSammendrag
Finska viken är en av Östersjöns mest eutrofierade bassänger. Vid sidan om betydelsen av fem-miljoners staden St Petersburg har lantbrukets andel varit oklar. Ett nytt svenskt-ryskt flerårigt samarbete har inletts i Leningrads län för att bland annat bygga ett nätverk av monitoringstationer. Dessa stationer ska ge underlag för bättre källfördelning men även för råd om motåtgärder mot övergödningen av Finska viken och Östersjön.
Sammendrag
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Sammendrag
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Sammendrag
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Forfattere
Trygve S. Aamlid Tatsiana Espevig Trond Olav Pettersen Siv Lene Gangenes Skar Agnar KvalbeinSammendrag
Soil water repellency (SWR) is a common phenomenon on sand-based golf greens. Soils are considered severely water repellent if water droplets remain on the surface of undisturbed, air-dried soil samples for more than 600 seconds before penetrating. The objective of this research was to evaluate the potential of a surfactant to overcome SWR and restore turfgrass quality on a green with severe drought symptoms. The surfactant Aqueduct® was applied at a rate of 25 L ha-1 at weekly intervals from 4 June through 25 June 2008, either alone or after aeration with solid tines to 5 cm depth before each application. The experiment was irrigated uniformly corresponding to 1.65 times pan evaporation values from 4 June till 12 June, after which irrigation was not necessary due to natural rainfall. Conspicuous and statistically significant improvements in turfgrass quality occurred 10-12 days after the first application of surfactant, and the difference from untreated control plots continued to increase for about two and a half months after the completion of treatments. The improvement was accompanied by a significant increase in the SWC of the 0-20 cm soil layer and a deeper root system. The difference in WDPT between treated and untreated plots was significant at 1 cm, but not at 2, 3, 5 or 10 cm soil depths which were always far more water repellent than the thatch layer. Repeated aeration had no significant effect on turfgrass quality, and there was no significant interaction between surfactant and aeration treatments.
Forfattere
Håkon BorchSammendrag
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