| Autor: |
M M, Jordán, M B, Almendro-Candel, J, Navarro-Pedreño, F, Pardo, E, García-Sánchez, J, Bech |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Environmental geochemistry and health. 44(1) |
| ISSN: |
1573-2983 |
| Popis: |
The precipitation of sparingly soluble calcium phosphate in calcareous soils decreases the bioavailability of macronutrients, which makes their addition by way of fertilisers necessary. Sludge resulting from treating urban wastewater does not only provide significant amounts of phosphorus, but also helps lower the pH, thus increasing its bioavailability. The loss of part of soil nutrients due to irrigation or rain can contaminate groundwater. In order to assess the movement of phosphorus, a experiment was conducted on percolation columns, to which different doses of wastes were applied. The pH decreased by as much as 0.89 units, as well as the assimilable and soluble P, in intervals of 20 cm of depth, obtaining maximum values of 254 mg P kg |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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