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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/31/1/319
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https://dl.sciencesocieties.org/publications/jeq/pdfs/31/1/319
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| Publication Type:
| Refereed |
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| Author(s): | Sinaj, S.;
Stamm, C.;
Toor, G. S.;
Condron, L. M.;
Hendry, T.;
Di, H. J.;
Cameron, K. C.;
Frossard, E. |
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| Author Affiliation: | Sinaj and Frossard: Institute of Plant Sciences, Swiss Federal Insitute of Technology Zürich (ETHZ), Eschikon-Lindau, Switzerland; Stamm: Institute of Terrestrial Ecology, ETHZ, Schlieren, Switzerland; Toor, Condron, Hendry, Di, and Cameron: Centre for Soil and Environmental Quality, Lincoln University, Canterbury, New Zealand |
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| Title: | Phosphorus exchangeability and leaching losses from two grassland soils |
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| Section: | Vadose zone processes and chemical transport
Other records with the "Vadose zone processes and chemical transport" Section
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| Source: | Journal of Environmental Quality. Vol. 31, No. 1, January/February 2002, p. 319-330. |
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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: | 12 |
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| Keywords: | TIC Keywords: Phosphorus; Leaching; Grasslands; Preferential flow; Flooding; Lysimeters; Chemical soil analysis; Mobility; Dyes
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| Abstract/Contents: | "Although phosphate phosphorus (P) is strongly sorbed in many soils, it may be quickly transported through the soil by preferential flow. Under flood irrigation, preferential flow is especially pronounced and associated solute losses may be important. Phosphorus losses induced by flood irrigation were investigated in a lysimeter study. Detailed soil chemical analyses revealed that P was very mobile in the topsoil, but the higher P-fixing capacity of the subsoil appeared to restrict P mobility. Application of a dye tracer enabled preferential flow pathways to be identified. Soil sampling according to dye staining patterns revealed that exchangeable P was significantly greater in preferential flow areas as compared with the unstained soil matrix. This could be partly attributed to the accumulation of organic carbon and P, together with enhanced leaching of Al- and Fe-oxides in the preferential flow areas, which resulted in reduced P sorption. The irrigation water caused a rapid hydrologic response by displacement of resident water from the subsoil. Despite the occurrence of preferential flow, most of the outflowing water was resident soil water and very low in P. In these soils the occurrence of preferential flow per se is not sufficient to cause large P losses even if the topsoil is rich in P. It appears that the P was retained in lower parts of the soil profile characterized by a very high P-fixing capacity. This study demonstrates the risks associated with assessing potential P losses on the basis of P mobility in the topsoil alone." |
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| Language: | English |
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| References: | 60 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sinaj, S., C. Stamm, G. S. Toor, L. M. Condron, T. Hendry, H. J. Di, et al. 2002. Phosphorus exchangeability and leaching losses from two grassland soils. J. Environ. Qual. 31(1):p. 319-330. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/articles/31/1/319
Last checked: 11/07/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/31/1/319
Last checked: 11/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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