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| Uusi-Kämppä, Jaana; Närvänen, Aaro; Jansson, Håkan. |
| The losses of P and faecal microbes from outdoor paddocks are possible to decrease by removing dung, choosing the right floor materials and adding of the P-binding material into the surface layer of the floor. In the present study, sand retained more P and faecal coliforms than woodchips. The concentrations were lower in percolation water compared to surface runoff water, since the floor materials retained P and sieved coliforms. Addition of Fe-containing amendment into the sand floor decreased P concentrations and possibly also numbers of faecal coliforms in percolation water. More research is, however, needed to obtain the right amendments and suitable amounts. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2011 |
URL: http://orgprints.org/19447/1/Uusi%2DK%C3%A4mpp%C3%A4.doc |
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| Närvänen, Aaro; Jansson, Håkan; Uusi-Kämppä, Jaana; Jansson, Helena; Perälä, Paula. |
| The increasing number of horses, especially in urban areas has made the phosphorus (P) load of exercise areas (paddocks) more and more obvious but there has been a lack of information regarding how to assess this load and what can be done to lower it. In the surface soil (1-2 cm) of areas that are affected by horse manure, like paddocks, we measured very high extractable P contents. When testing soils from these areas using a rainfall simulator we found a close correlation between the extractable soil P in the surface soil and the dissolved reactive P in runoff water. In a runoff treatment test trial we used ferric sulphate to treat paddock runoff water. The chemical dosage was carried out using a tube doser placed in a well. After ferric sulphate... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2008 |
URL: http://orgprints.org/16436/1/ber.pdf |
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