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 351448
Title Phosphorus leaching from cow manure patches on soil columns
Author(s) Chardon, W.J.; Aalderink, G.H.; Salm, C. van der
Source Journal of Environmental Quality 36 (2007)1. - ISSN 0047-2425 - p. 17 - 22.
Department(s) Soil Science Centre
Alterra - Centre for Water and Climate
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) water-extractable phosphorus - cattle dung - surface runoff - dairy-cattle - grassland - nutrient - pasture - losses - netherlands - transport
Abstract The loss of P in overland flow or leachate from manure patches can impair surface water quality. We studied leaching of P from 10-cmhigh lysimeters filled with intact grassland soil or with acid-washed sand. A manure patch was created on two grassland and two sandfilled lysimeters, and an additional two grass lysimeters served as blanks. Lysimeters were leached in the laboratory during 234 d with a diluted salt solution, and column effluent was passed through a 0.45-mm filter, analyzed for pH, dissolved reactive P (DRP), and total dissolved P (TDP). At the end of the experiment lysimeter soil was sampled and analyzed for pH, available P, and oxalate-extractable P, Fe, and Al. The concentration of TDP in the effluent from the sand column increased to 25 mg L21 during the first weeks and remained above 10 mg L21 during the rest of the percolation. In effluent from grass1patch lysimeters TDP gradually increased to 4 mg L21. Both in the manure and in the effluent of the sand lysimeter P was found mainly in the form of DRP, but in the effluent from the grass lysimeters was found mainly as dissolved unreactive P (DUP 5 TDP 2 DRP). Earthworm activity was responsible for decomposition of the manure patch on the grass lysimeters. Manure patches and their remains were found to be a long-term source of high concentrations of P in leachates. Spreading of patches after a grazing period could reduce their possible negative impacts on the environment.
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