Full TGIF Record # 84785
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1081/CSS-120015916
    Last checked: 10/15/2015
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Publication Type:
i
Report
Author(s):Ringuelet, Ariel; Bachmeier, Omar Antonio
Author Affiliation:Ringuelet and Bachmeier: Cátedra de Edafología, Facultad de Ciencias Agropecuarias, Argentina
Title:Kinetics of soil nitrogen mineralization from undisturbed and disturbed soil
Source:Communications in Soil Science and Plant Analysis. Vol. 33, No. 19/20, November 2002, p. 3703-3721.
# of Pages:19
Publishing Information:New York, NY: Marcel Dekker
Keywords:TIC Keywords: Nitrogen; Nitrogen mineralization; Kinetics; Models; Soil sampling
Abstract/Contents:"Knowledge of soil nitrogen (N) mineralization processes is essential for modeling soil processes in agriculture. Many authors have found discrepancies in N mineralization between disturbed and undisturbed samples. Nevertheless, most simulation models use a first-order kinetic model (exponential model) for all the layers under study, devised from studies using disturbed and superficial samples. The goal of the present study was to establish the best kinetic model to explain the predict N mineralization as affected by sample disturbance and soil depth in two soils of the semiarid region of Argentina. Disturbed (D: sieved <2 mm and quartz mixed) and undisturbed (UD) samples from two Haplustolls were subject to successive incubations and extractions to assess N mineralization rates. The amount of N mineralized in disturbed samples was up to 200% greater than undisturbed. Replicate D samples from the Torriorthentic had significantly higher variability (p < 0.05) that samples from the Torrifluventic. In the latter, UD samples had a kinetic heterogeneity that was not apparent in the D samples. These results suggest that the incubation-technique for D samples is ineffective for these soils."
Language:English
References:51
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ringuelet, A., and O. A. Bachmeier. 2002. Kinetics of soil nitrogen mineralization from undisturbed and disturbed soil. Commun. Soil. Sci. Plant Anal. 33(19/20):p. 3703-3721.
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http://www.tandfonline.com/doi/pdf/10.1081/CSS-120015916
    Last checked: 10/15/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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