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DOI: | 10.2134/jeq2007.0338 |
Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/37/4/1567 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/37/4/1567 Last checked: 11/08/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Wagner, D. J.;
Elliott, H. A.;
Brandt, R. C.;
Jaiswal, D. |
Author Affiliation: | Agricultural and Biological Engineering Department, Pennsylvania State University, University Park, Pennsylvania |
Title: | Managing bisolids runoff phosphorus using buffer strips enhanced with drinking water treatments residuals |
Section: | Surface water quality Other records with the "Surface water quality" Section
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Source: | Journal of Environmental Quality. Vol. 37, No. 4, July/August 2008, p. 1567-1574. |
Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
# of Pages: | 8 |
Keywords: | TIC Keywords: Sewage sludge; Phosphorus; Filter strips; Best management practices; Tillage; Kinetics; Sorption; Leaching; Surface water; Buffer zones
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Abstract/Contents: | "Vegetated buffers strips typically have limited ability to reduce delivery of dissolved phosphorus (DP) from agricultural fields to surface waters. A field study was conducted to evaluate the ability of buffer strips enhanced with drinking water treatment residuals (WTRs) to control runoff P losses from surface-applied biosolids characterized by high water-extractable P (4 g kg-1). Simulated rainfall (62.4 mm h-1) was applied to grassed plots (3 m × 10.7 m including a 2.67 m downslope buffer) surface-amended with biosolids at 102 kg P ha-1 until 30 min of runoff was collected. With buffer strips top-dressed with WTR (20 Mg ha-1), runoff total P (TP = 2.5 mg L-1) and total DP (TDP = 1.9 mg L-1) were not statistically lower ( = 0.05) compared to plots with unamended grass buffers (TP = 2.7 mg L-1; TDP = 2.6 mg L-1). Although the applied WTR had excess capacity (Langmuir P maxima of 25 g P kg-1) to sorb all runoff P, kinetic experiments suggest that sheet flow travel time across the buffers ( 30 s) was insufficient for significant P reduction. Effective interception of dissolved P in runoff water by WTR-enhanced buffer strips requires rapid P sorption kinetics and hydrologic flow behavior ensuring sufficient runoff residence time and WTR contact in the buffer. Substantial phosphate-adsorbent contact opportunity may be more easily achieved by incorporating WTRs into P-enriched soils or blending WTRs with applied P sources." |
Language: | English |
References: | 41 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Anonymous. 2008. Managing bisolids runoff phosphorus using buffer strips enhanced with drinking water treatments residuals. J. Environ. Qual. 37(4):p. 1567-1574. |
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| DOI: 10.2134/jeq2007.0338 |
| Web URL(s): https://dl.sciencesocieties.org/publications/jeq/articles/37/4/1567 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/37/4/1567 Last checked: 11/08/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2225072a |
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