Drinking‐Water Treatment Residual Effects on the Phosphorus Status of Field Soils Amended with Biosolids, Manure, and Fertilizer
| Autor: | Sampson Agyin-Birikorang, Thomas A. Obreza, Olawale O. Oladeji, John Capece, George A. O'Connor |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Communications in Soil Science and Plant Analysis. 39:1700-1719 |
| ISSN: | 1532-2416 0010-3624 |
| Popis: | Concerns about surface water pollution with phosphorus (P) from biosolids and manures are prompting land application guidelines that limit residual application rates to those based on crop‐P removals (typically, no more than 2 Mg ha−1). Such rates are so low that the beneficial recycling of residuals is seriously threatened. Greater application rates [i.e., nitrogen (N) based] require judicious selection of residuals (low soluble P contents) and/or soil amendments, such as drinking‐water treatment residuals (WTRs) to control soluble P concentration. Although in the short term, WTR is effective in reducing soluble P levels, field studies to evaluate the stability of WTR‐immobilized P are scarce. The initial objective of this study was to determine the effects of WTR on P losses to surface and groundwater from Florida sand amended with different P sources (biosolids, manure, and inorganic fertilizer) applied at P‐ and N‐based rates. However, this objective could not be pursued to its logical conclu... |
| Databáze: | OpenAIRE |
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