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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/28/4/JEQ0280041105
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Speir, T. W.;
van Schaik, A. P.;
Kettles, H. A.;
Vincent, K. W.;
Campbell, D. J. |
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| Author Affiliation: | Speir & van Schaik: ESR Ltd, P.O. Box 50348, Porirua, New Zealand; Kettles: Landcare Research NZ Ltd, Hamilton, New Zealand; Vincent: Landcare Research NZ Ltd, Havelock North, New Zealand; and Campbell: ERANZ, Upper Hutt, New Zealand |
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| Title: | Soil and stream-water impacts of sewage effluent irrigation onto steeply sloping land |
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| Section: | Waste management
Other records with the "Waste management" Section
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| Source: | Journal of Environmental Quality. Vol. 28, No. 4, July/August 1999, p. 1105-1114. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Effluent water; Slope; Phosphorus; Nitrogen; Respiration; Soil microorganisms; Physical properties of soil; Hydraulic conductivity; Ammonia; Phosphates; Plant succession; Soil water content
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| Abstract/Contents: | "In a pilot study, we investigated how irrigation of secondary sewage effluent onto steeply sloping land affected soil physical, chemical, and biochemical properties, the composition of soil- and surface-waters and the vegetation on the site. The 3.35-ha site received up to 44 mm effluent/wk (over a 7-11 h period), for 65 wk. Irrigation significantly improved total- and Olsen-P status of the soils and greatly enhanced nitrification potential. Respiration increased with increasing soil water content, but microbial biomass was not greatly affected by irrigation. Soil phosphatase activity decreased with increasing P fertility. Soil physical properties were not affected by effluent and hydraulic conductivities were sufficient to conduct water into and through the soil profiles. Soil- and surface-water NO₃⁻-N concentrations increased markedly, especially in the second half of the trail when soil nitrification rates were also high. However, the streamwater NO₃⁻-N concentrations remained well below the drinking water limit concentration of 11.3 g m⁻³. In contrast, streamwater NH₄⁺-N and PO₄³⁻-P concentrations remained low and results indicated that concentrations of PO₄³⁻-P in river water, resulting from a full-scale irrigation scheme, would not exceed the target limit level of 0.0056 g m⁻³. Irrigation accelerated natural successional changes in the vegetation, with a decline in undesirable fire-prone and shrubby species and an increase in native trees and tree ferns. These results demonstrated that, in the short term at least, a carefully designed and implemented irrigation scheme on steepland could renovate secondary sewage effluent, without adversely affecting soil properties and surface water quality." |
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| Language: | English |
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| References: | 40 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Speir, T. W., A. P. van Schaik, H. A. Kettles, K. W. Vincent, and D. J. Campbell. 1999. Soil and stream-water impacts of sewage effluent irrigation onto steeply sloping land. J. Environ. Qual. 28(4):p. 1105-1114. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/28/4/JEQ0280041105
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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