Nitrogen transformations in soils previously amended with sewage sludge
| dc.contributor.author | Boyle, Michael, author | |
| dc.contributor.author | Paul, Eldor A., author | |
| dc.contributor.author | Soil Science Society of America, publisher | |
| dc.date.accessioned | 2007-01-03T07:05:37Z | |
| dc.date.available | 2007-01-03T07:05:37Z | |
| dc.date.issued | 1988-05 | |
| dc.description.abstract | This short-term (10-d) incubation experiment established the rates of nitrogen (N) transformations occurring in sludge-amended and nonamended soil. Utilizing a nitrification block (C2H2) with (15NH4)2SO4, first-order rate constants were calculated for N immobilization, ammonification, nitrification, and denitrification. These rate constants were compared to values obtained after a long-term (87-wk) incubation performed on soils sampled from the same field plots. The short-term rates of ammonification were still higher than the controls 4 year after the last sludge addition. Sludge applications over an 8-yr period (180 Mg ha−1 yr−1) reduced soil nitrification potential compared to the controls when spiked with 15N. Denitrification did not cause a significant loss of N during either a short- or long-term incubation period. The microbial biomass in the sludge-amended soil contained more N, which resulted in a microbial C/N ratio of approximately 4:1 vs. 5:1 for the controls. Initial (short-term) N immobilization rate constants were 0.43 for the sludge-amended and 0.35 for the nonamended soil. | |
| dc.format.medium | born digital | |
| dc.format.medium | articles | |
| dc.identifier.bibliographicCitation | Boyle, Michael and E. A. Paul, Nitrogen Transformations in Soils Previously Amended with Sewage Sludge. Soil Science Society of America Journal 53, no. 3 (May-June 1988): 740-744. https://dx.doi.org/10.2136/sssaj1989.03615995005300030017x. | |
| dc.identifier.doi | https://dx.doi.org/10.2136/sssaj1989.03615995005300030017x | |
| dc.identifier.uri | http://hdl.handle.net/10217/85509 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation.ispartof | Faculty Publications | |
| dc.rights | ©1988 Soil Science Society of America. | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.subject | soil N processes | |
| dc.subject | n transformation | |
| dc.subject | microprocessors | |
| dc.subject | terrestrial ecosystem | |
| dc.title | Nitrogen transformations in soils previously amended with sewage sludge | |
| dc.type | Text |
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