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Short-Term Eucalyptus and Phragmites Biochar’s Efficiency in Mineralization of Soil Carbon

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Abstract

Investigations of carbon dynamics of Eucalyptus and Phragmites feedstock’s made biochar amendments require laboratory soil incubations that provide controlled conditions. The aim was to evaluate the effects of two different biochar amendments on carbon mineralization potential of two different soils. Biochars were produced at 550 °C from the Eucalyptus and Phragmites feedstock materials and at 0, 10, 20, and 40 t ha−1 of doses were mixed with silty loam texture Balcalı and clay texture, Kızıltapır soils. The soil + biochar amendments were incubated under constant temperature (28 °C) and moisture (80% of soil field capacity) conditions for 48 days. In both treatments, the biochar doses significantly increased CO2 emission After 48 days, both biochars increased cumulative carbon mineralization (Cmin) by more than 20% in Balcalı soil (P < 0.001). The two introduced biochar had a significant impact on Cmin at the end of the incubation period in Kızıltapır soil. Biochars, on the other hand, considerably reduced the rate of Cmin in both soils at a dose of 40 t ha−1. Eucalyptus and Phragmites biochars prepared with concentrations of 10, 20, and 40 t ha−1 have varied effects on soil organic carbon mineralization for both Balcalı and Kızıltapır soils. In general, with increasing biochar doses addition, Cmin significantly increased.

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Funding

This work was financially supported by The Scientific and Technological Research Council of Turkey (TUBITAK) under project number 112O785. We also thank to Dr. Saeed Ullah Jan for proofreading and suggestions.

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Correspondence to Burak Koçak.

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Koçak, B., Ortaş, İ. Short-Term Eucalyptus and Phragmites Biochar’s Efficiency in Mineralization of Soil Carbon. J Soil Sci Plant Nutr 21, 3346–3353 (2021). https://doi.org/10.1007/s42729-021-00610-0

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  • DOI: https://doi.org/10.1007/s42729-021-00610-0

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