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| Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2004.0282
Last checked: 02/28/2024
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https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2004.0282
Last checked: 02/28/2024
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| Publication Type:
| Refereed |
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| Author(s): | Accoe, F.;
Boeckx, P.;
Videla, X.;
Pino, I.;
Hofman, G.;
Van Cleemput, O. |
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| Author Affiliation: | Accoe: European Commission, Joint Research Centre DG, Institution for Reference Materials, Geel and measurments, Belgium; Boeckx & Van Cleemput: Laboratory of Applied Physical Chemistry-ISOFYS, Faculty of Biosciences Engineering, Ghent University, Gent, Belgium; Videla & Pino: Chilean Nuclear Energy Commission, Santiago, Chile; and Hofman: Department of Soil Management and Soil Care, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium |
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| Title: | Estimation of gross nitrogen transformations and nitrogen retention in grassland soils using FLUAZ |
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| Section: | Soil biology and biochemistry
Other records with the "Soil biology and biochemistry" Section
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| Source: | Soil Science Society of America Journal. Vol. 69, No. 6, November/December 2005, p. 1967-1976. |
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| Publishing Information: | Madison, WI: Soil Science Society of America |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Nitrogen; Chemical transformation; Nitrogen retention; Grasslands; Nitrogen uptake; Mineral fertilizers; Nitrification; Soil analysis
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| Abstract/Contents: | "The flux of N through mineralization-immobilization turnover (MIT) in grassland soils is a major determinant for plant N uptake and for N loss processess. In this study we investigated the dynamics of gross N transformation rates and potential N retention on mineral fertilizer addition in three permanent grassland soils of varying texture (loamy sand, loam, and clay loam). Gross N transformation rates were calculated with the 15N-tracing model FLUAZ. Differentially 15N-labeled NH4NO3 (at a rate of 100 mg N kg-1 soil) was added to the soild in paired laboratory incubation experiments. Size and 15N enrichement of the NH4+,NO3-, and soil organic N pools were measured at 0, 1, 3, 7, 14, and 30 d after NH4NO3 addition. The accuaracy of the simulations of the data using FLAUZ were robust, but tended to decrease (i) with increasing incubation times, (ii) with increasing duration of the time intervals considered, and (iii) with increasing experimental variability. The proportion of the initial N content mineralized on incubation was largest in the loamy sand soil (2.5%), followed by the clay loam soil (1.2%) and the loam soil (0.8%). The actual gross nitrification and N immobilization activity followed the same trend. The loam soil showed the lowest relative N retention (ratio N immobilization over [gross N mineralization + gross nitrification]), which was attributed to its low C availability. In general, the 15N retention after addition of 15NH414NO3 was approximately five times larger than after addition of 14NH415NO3." |
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| Language: | English |
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| References: | 35 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Accoe, F., P. Boeckx, X. Videla, I. Pino, G. Hofman, and O. van Cleemput. 2005. Estimation of gross nitrogen transformations and nitrogen retention in grassland soils using FLUAZ. Soil Sci. Soc. Am. J. 69(6):p. 1967-1976. |
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| Web URL(s):
https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2004.0282
Last checked: 02/28/2024
Access conditions: Item is within a limited-access website
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2004.0282
Last checked: 02/28/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 590 .S65 |
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