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Published online 16 August 2005
Published in Vadose Zone J 4:828-837 (2005)
DOI: 10.2136/vzj2004.0097
© 2005 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Transport and Retention of Manure-Borne Coliforms in Soil

A. K. Guber*, D. R. Shelton and Ya. A. Pachepsky

USDA-ARS, Animal and Natural Resources Institute, Animal Waste Pathogens Lab., Bldg. 173, BARC-East, 10300 Baltimore Ave, Beltsville, MD 20705-2350


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  		Fig. 1. Effect of dissolved manure content on Escherichia coli attachment to soil; symbols, observed; lines, fitted with the Freundlich isotherm equation.

 


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  		Fig. 2. Chloride, Escherichia coli and manure breakthrough curves. Flow velocities: 2.26 cm d–1 (column 1), 8.35 cm d–1 (column 2) and 9.28 cm d–1 (column 3).

 


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  		Fig. 3. Relative cumulative mass of chloride, Escherichia coli and manure in effluent.

 


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  		Fig. 4. Effect of water flow velocity on leaching of chloride, Escherichia coli and manure after 0.5 (a), 1.0 (b), and 2.0 (c) pore volumes passed through columns.

 


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  		Fig. 5. Water content (a) and bulk density (b) distributions in soil columns after the experiment.

 


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  		Fig. 6. Escherichia coli distribution in columns after the experiment.

 


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  		Fig. 7. Escherichia coli distribution between liquid and solid phase; symbols: after transport experiments, lines: Freundlich isotherms from batch experiments.

 




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