Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2010
Authors
Adam ParuchAbstract
No abstract has been registered
Authors
Adam ParuchAbstract
No abstract has been registered
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Authors
Amy Marie Patrin Oen Magnus Sparrevik David Nicholas Barton Sekhar Udaya Nagothu Gerald Jan Ellen Gijs D. Breedveld Jens Skei Adriaan SlobAbstract
No abstract has been registered
Abstract
A research has been undertaken studying pesticide residues in water from greenhouses and the use of soils and filter materials to reduce such losses. The pesticides detected in water samples collected downstream greenhouses include 9 fungicides, 5 herbicides and 4 insecticides. 10 compounds from flower and vegetable productions were frequently found to exceed environmental risk levels, and with a few exceptions the compounds were found in higher concentrations than those typically found in agricultural runoff. Some compounds were found in high concentrations (.1mg/l) in undiluted runoff from greenhouses producing vegetables. Nutrient concentrations in the runoff were also sporadically very high, with phosphorous values varying between 0.85 and 7.4mgP/l, and nitrogen values between 7.5 and 41.4mgN/l. Undiluted runoff from the productions showed values of 60mgP/l and 300mgN/l. High values of pesticides correlated with high values of nutrients, especially P. Column experiments using a sandy agricultural soil and stock solutions of non-polar and slightly polar pesticides mixed with a complex binder and nutrients showed a significant reduction for nearly all of the compounds used, indicating that transport through soil will reduce the concentrations of the studied pesticides. The pesticide adsorption capacity of the filter materials pine bark, peat, Sphagnum moss, compost, oat straw, ferrous sand and clay soil were tested in batch and column experiments. Adsorption were studied contacting the filter materials with aqueous solutions containing greenhouse production pesticides. The batch experiments showed that pine bark and peat, both combining a high content of organic matter with a low ph, provided the highest adsorption for most of the tested pesticides. Sphagnum moss, compost and oat straw also showed high adsorption for most of the pesticides, while the mineral filters provided the lowest adsorption (30-55%). Further column experiments confirmed these results, displaying the best removal efficiency in the organic materials, varying from 200mg/g in compost, to 500mg/g in moss, straw and pine bark.
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No abstract has been registered
Abstract
No abstract has been registered
Report – Some Characteristics of the Vansjø-Hobøl (Morsa) Catchment
Eva Skarbøvik, Marianne Bechmann
Abstract
This report gives an overview of some characteristics of the Vansjø-Hobøl (Morsa) catchment in Southern Norway. The catchment is one of the most studied catchments in Norway in terms of water quality, partly because it has been a pilot project for the implementation of the EU Water Framework Directive (WFD), partly because eutrophication and harmful algal blooms have been a problem in the latter years. Information from the catchment has until now been scattered in several different papers and reports, and most of these have been written in Norwegian.
Abstract
No abstract has been registered
Abstract
No abstract has been registered