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In this paper, two rural catchment- the Zagożdżonka catchment in Poland and the Skuterud catchment in Aas, Akershus county in Norway are compared. In addition to the general description, more in particular information, runoff, NO3 load, P-PO4 load, total phosphorus and total nitrogen concentrations in streams are compared. The data compared are from 1993 to 1995 in Zagożdżonka catchment and from 1994-...
In Scandinavia high losses of soil and particulate‐bound phosphorus (PP) have been shown to occur from tine‐cultivated and mouldboard‐ploughed soils in clay soil areas, especially in relatively warm, wet winters. The omission in the autumn of primary tillage (not ploughing) and the maintenance of a continuous crop cover are generally used to control soil erosion. In Norway, ploughing and shallow cultivation...
Agricultural management and losses of nitrogen (N), phosphorus (P) and suspended sediments (SS) from eight small (85–2830ha) catchments in Norway were analysed. The catchments represent areas with different agricultural production systems, soils and climate. Results from the long-term (9–16 years) in-stream monitoring show (i) large differences in levels of losses between the catchments, (ii) large...
Runoff measurements from artificially levelled land showed that rates of particle erosion to the drainage system was even higher than that from surface runoff. This effect was increased by tillage whilst no tillage reduced the losses significantly. The field site soil type was a silty clay loam. Artificial levelling at the site had exposed an unstable subsoil, susceptible to cracking. Soil structures...
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