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Article

Differences in Mineral Phase Associated Soil Organic Matter Composition due to Varying Tillage Intensity

1
Geographical Institute, Research Centre for Astronomy and Earth Sciences, 1112 Budapest, Hungary
2
Institute of Geography and Geoinformatics, University of Miskolc, 3515 Miskolc, Hungary
3
Department of Environmental and Landscape Geography, ELTE University, 1117 Budapest, Hungary
4
Department of Soil Science and Water Management, Faculty of Horticultural Science, Szent István University, 1118 Budapest, Hungary
*
Author to whom correspondence should be addressed.
Agronomy 2019, 9(11), 700; https://doi.org/10.3390/agronomy9110700
Received: 27 September 2019 / Revised: 16 October 2019 / Accepted: 28 October 2019 / Published: 30 October 2019
(This article belongs to the Section Soil and Plant Nutrition)
The volume of soil organic matter (SOM) changes, owing to variations in tillage systems. Conservation tillage (CT) is a useful method for recovering the SOM content of crop fields. However, little is known about the SOM composition of silt- and clay-associated and aggregate-occluded organic matter (OM). The present study aimed at determining the SOM compositions of various SOM fractions in the same Luvisol in a native forest and under ploughing and CT. SOM fractions (silt and clay associated; sand and aggregates associated; restricted OM) were characterized using diffuse reflectance Fourier transform infrared (FTIR) spectroscopy. The size of both the aggregate-occluded and resistant SOM pools increased, owing to the shift in the tillage system to CT for 15 years. As a general trend, the soil organic carbon content was inversely proportional to aromaticity under both crop fields, which supported the preferential mineralization of aliphatic components in each fraction. The shift in the tillage system could trigger rapid qualitative changes even in the stable restricted carbon pools; nevertheless, it was difficult to distinguish between the role of OM and the mineral composition in the FTIR spectra. In particular, the clay-related organic-mineral complexes could trigger difficulties in the traditional interpretation methods. View Full-Text
Keywords: conservation tillage; ploughing tillage; aromaticity; carbon pools; Fourier transform infrared spectroscopy conservation tillage; ploughing tillage; aromaticity; carbon pools; Fourier transform infrared spectroscopy
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MDPI and ACS Style

Jakab, G.; Filep, T.; Király, C.; Madarász, B.; Zacháry, D.; Ringer, M.; Vancsik, A.; Gáspár, L.; Szalai, Z. Differences in Mineral Phase Associated Soil Organic Matter Composition due to Varying Tillage Intensity. Agronomy 2019, 9, 700. https://doi.org/10.3390/agronomy9110700

AMA Style

Jakab G, Filep T, Király C, Madarász B, Zacháry D, Ringer M, Vancsik A, Gáspár L, Szalai Z. Differences in Mineral Phase Associated Soil Organic Matter Composition due to Varying Tillage Intensity. Agronomy. 2019; 9(11):700. https://doi.org/10.3390/agronomy9110700

Chicago/Turabian Style

Jakab, Gergely, Tibor Filep, Csilla Király, Balázs Madarász, Dóra Zacháry, Marianna Ringer, Anna Vancsik, Lilla Gáspár, and Zoltán Szalai. 2019. "Differences in Mineral Phase Associated Soil Organic Matter Composition due to Varying Tillage Intensity" Agronomy 9, no. 11: 700. https://doi.org/10.3390/agronomy9110700

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