Plant Soil Environ., 2003, 49(1):8-11 | DOI: 10.17221/4082-PSE

A method to determine mineralization kinetics of a decomposable part of soil organic matter in the soil

L. Kolář, F. Klimeš, R. Ledvina, S. Kužel
Faculty of Agriculture, University of South Bohemia in České Budějovice, Czech Republic

A new method was proposed that complements the value of active carbon in the soil expressed as hot-water soluble carbon Chws. The method is based on vacuum measurements of biochemical oxygen demand (BOD) of soil suspensions using an Oxi Top Control system manufactured by the WTW Merck Company that is destined for hydrochemical analyses of organically contaminated waters. Measurements will provide BOD values for particular days of incubation; total limit BODt can be determined from these values, and it is possible to calculate the rate constant k1 of mineralization of a decomposable part of soil organic matter. It is typical of soil organic matter (SOM) of a given soil sample and comparable with the BOD5:COD (chemical oxygen demand) ratio that is used to evaluate degradability of water organic contamination in hydrochemical analytics.

Keywords: soil organic matter (SOM); decomposable part of SOM; mineralization kinetics; analytical method

Published: January 31, 2003  Show citation

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Kolář L, Klimeš F, Ledvina R, Kužel S. A method to determine mineralization kinetics of a decomposable part of soil organic matter in the soil. Plant Soil Environ. 2003;49(1):8-11. doi: 10.17221/4082-PSE.
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