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Article

Fractionation of Soil Organic Matter into Labile and Stable Fractions

1
Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, 370 05 Ceske Budejovice, Czech Republic
2
Division of Crop Management Systems, Crop Research Institute, 161 06 Prague, Czech Republic
3
Faculty of Civil Engineering, Brno University of Technology, 602 00 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editors: Andrea Baglieri and Zhongkui Luo
Agronomy 2022, 12(1), 73; https://doi.org/10.3390/agronomy12010073
Received: 7 December 2021 / Revised: 23 December 2021 / Accepted: 27 December 2021 / Published: 29 December 2021
(This article belongs to the Special Issue Land Management Impacts on Soil Properties and Soil Erosion Processes)
The present study aims to test and evaluate the efficiency of a new modified method of organic matter evaluation. It allows the assessment of the quality and quantity of the primary soil organic matter and the stable organic fractions separately. The new method was tested in six soil samples of different localities in the Czech Republic. This method is based on observing reaction kinetics during the oxidation of soil organic matter and measuring the cation-exchange capacity of stable organic fractions. The results were compared with classical methods, which rely on the isolation of humic substances, determination of the content of humic acids and fulvic acids and their ratio CHA:CFA, quotient E4/6, and fractionation of soil organic matter according to resistance to oxidation. It turned out that the results of the new modified method are more sensitive in comparison with the results obtained by classical procedures. The linear regression demonstrated the dependence between the amounts of soil organic matter determined by the classical method compared with the modified method. Moreover, the new modified method was found to be faster and not demanding on laboratory equipment. The new method has been improved to be easily repeatable, and some shortcomings of the previous method were eliminated. Based on our results and other recent studies, the modified method may be recommended for the practical evaluation of soil organic matter conditions. View Full-Text
Keywords: analytical methods; fractionation; lability; modified method; soil organic matter; stability analytical methods; fractionation; lability; modified method; soil organic matter; stability
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MDPI and ACS Style

Kopecký, M.; Kolář, L.; Perná, K.; Váchalová, R.; Mráz, P.; Konvalina, P.; Murindangabo, Y.T.; Ghorbani, M.; Menšík, L.; Dumbrovský, M. Fractionation of Soil Organic Matter into Labile and Stable Fractions. Agronomy 2022, 12, 73. https://doi.org/10.3390/agronomy12010073

AMA Style

Kopecký M, Kolář L, Perná K, Váchalová R, Mráz P, Konvalina P, Murindangabo YT, Ghorbani M, Menšík L, Dumbrovský M. Fractionation of Soil Organic Matter into Labile and Stable Fractions. Agronomy. 2022; 12(1):73. https://doi.org/10.3390/agronomy12010073

Chicago/Turabian Style

Kopecký, Marek, Ladislav Kolář, Kristýna Perná, Radka Váchalová, Petr Mráz, Petr Konvalina, Yves Theoneste Murindangabo, Mohammad Ghorbani, Ladislav Menšík, and Miroslav Dumbrovský. 2022. "Fractionation of Soil Organic Matter into Labile and Stable Fractions" Agronomy 12, no. 1: 73. https://doi.org/10.3390/agronomy12010073

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