Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 431520
Title Water and nutrient transport on a heavy clay soil in a fluvial plain in the Netherlands
Author(s) Salm, C. van der; Toorn, A. van den; Chardon, W.J.; Koopmans, G.F.
Source Journal of Environmental Quality 41 (2012)1. - ISSN 0047-2425 - p. 229 - 241.
Department(s) Alterra - Integrated water and catchment management
Alterra - Sustainable soil management
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) surface runoff - phosphorus losses - subsurface drainage - grassland soil - organic phosphorus - agricultural land - nitrogen - fertilizer - bioavailability - management
Abstract In flat areas, transport of dissolved nutrients by water through the soil matrix to groundwater and drains is assumed to be the dominant pathway for nutrient losses to ground- and surface waters. However, long-term data on the losses of nutrients to surface water and the contribution of various pathways is limited. We studied nutrient losses and pathways on a heavy clay soil in a fluvial plain in The Netherlands during a 5-yr period. Average annual nitrogen (N) and phosphorus (P) losses to surface water were 15.1 and 3.0 kg ha-1 yr-1, respectively. Losses were dominated by particulate N (50%) and P (70%) forms. Rapid discharge through trenches was the dominant pathway (60–90%) for water and nutrient transport. The contribution of pipe drains to the total discharge of water and nutrients was strongly related to the length of the dry period in the preceding summer. This relationship can be explained by the very low conductivity of the soil matrix and the formation of shrinkage cracks during summer. Losses of dissolved reactive P through pipe drains appear to be dominated by preferential flow based on the low dissolved reactive P concentration in the soil matrix at this depth. Rainfall occurring after manure application played an important role with respect to the annual losses of N and P in spring when heavy rainfall occurred within 2 wk after manure application.
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