| Field |
Field Value |
| Title |
Field Assessment of Sludge Metal Bioavailability to Crops: Sludge Rate Response |
| Type |
Journal Article |
| Abstract |
We conducted a field study (1991-1995) of trace metal (Cd, Cu, Ni, Pb, and Zn) concentrations in two crops, corn (Zea mays L.) and lettuced (Lactuca sativa L.) as affected by affected by a one-time application of an anaerobically digested sewage sludge to Miamian silt loam (fine, mixed, mesic Typic Hapludalf) in Columbus, OH to determine the nature of the uptake response over a wide range of sludge application rates (0, 7.5, 15, 30, 60, 90, 120, 150, 188, 225, and 300 Mg/ha dry solids). Cadmium, Cu, Ni, Pb, and Zn sludge concentrations were 46, 433, 67, 185, and 2334 mg/kg, respectively. Soil pH did not vary significantly with sludge application (6.1-7.5), while electrical conductivity, total C and total organic N increased linearly with sludge application and declined over time. Soil metals extracted with 0.005 MEDTA in 0.01 MCa(N03)2 increased linearly with total soil concentration and generally declined over time. Cadmium, Cu and Zn concentrations in corn exhibited a plateau-type response that could be modeled with the Mitscherlich hequation. Lettuce concentration increased linearly with sludge application for Cd, Cu, and Zn in all years, and linear regression slopes generally declined and stabilized after the first 2 yr. |
| Document Number |
BIN.TR.AV.5.6 |
| Book Title |
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| Pages |
534-550 |
| Conference Name |
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| Editor |
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| Conference Location |
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| Keywords |
Metal bioavailability, land application, sewage sludge, crops |
| Date |
1997 |
| Publisher |
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| Volume |
26 |
| Journal |
J. Environ. Qual. |
| Author |
Logan, T.J., B.J. Lindsay and L.E. Goins |
| Institution |
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| Type of Work |
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| Place Published |
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| Report Number |
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| University |
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| Thesis Type |
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| Magazine |
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| Newspaper |
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| Issue |
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