<abstract xmlns="http://www.w3.org/1999/xhtml">

Biochar application into soil has potential as a means for reducing soil greenhouse gas emissions and climate mitigation strategy. In this study, we evaluated the impact of two doses of biochar (10 and 20 t.ha−1) applied in 2014, combined with three fertilization levels (N0, N1, N2) on carbon dioxide (CO2) in field conditions during the growing season (April – October) in 2018. The field site is located in the Nitra region of Slovakia – Malanta. The soil in the field was classified as a silt loam Haplic Luvisol. There was not found any statistically significant (<italic>P</italic> &lt;0.05) decreasing effect of biochar with or without N-fertilizer after four years of its application on average daily and cumulative CO2 emissions, while the CO2 emissions increased with additional N-fertilizer. Biochar decreased (insignificantly) the daily and cumulative CO2 emissions only in the treatments without N-fertilization and in the treatment fertilized with higher level of biochar application (20 t.ha−1) and N-fertilizer (80 kg.N.ha−1). According to these results it can be concluded that the biochar applied to soil is not able to reduce CO2 emissions after four years of its application when it is combined with usual agriculture practices which include N-fertilization.
</abstract>

Biochar application into soil has potential as a means for reducing soil greenhouse gas emissions and climate mitigation strategy. In this study, we evaluated the impact of two doses of biochar (10 and 20 t.ha−1) applied in 2014, combined with three fertilization levels (N0, N1, N2) on carbon dioxide (CO2) in field conditions during the growing season (April – October) in 2018. The field site is located in the Nitra region of Slovakia – Malanta. The soil in the field was classified as a silt loam Haplic Luvisol. There was not found any statistically significant (P <0.05) decreasing effect of biochar with or without N-fertilizer after four years of its application on average daily and cumulative CO2 emissions, while the CO2 emissions increased with additional N-fertilizer. Biochar decreased (insignificantly) the daily and cumulative CO2 emissions only in the treatments without N-fertilization and in the treatment fertilized with higher level of biochar application (20 t.ha−1) and N-fertilizer (80 kg.N.ha−1). According to these results it can be concluded that the biochar applied to soil is not able to reduce CO2 emissions after four years of its application when it is combined with usual agriculture practices which include N-fertilization.

Does Biochar Influence Soil CO2 Emission Four Years After Its Application to Soil?

Slovak University of Agriculture in Nitra

Acta Horticulturae et Regiotecturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Does Biochar Influence Soil CO Emission Four Years After Its Application to Soil?

Biochar application into soil has potential as a means for reducing soil greenhouse gas emissions and climate mitigation strategy. In this study, we evaluated...

Does Biochar Influence Soil CO₂ Emission Four Years After Its Application to Soil?

Published Online: May 21, 2021

Page range: 109 - 116

DOI: https://doi.org/10.2478/ahr-2021-0016

Keywords
biochar, N-fertilization, soil CO emission, sustainable agriculture

© 2021 Tatijana Kotuš et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Does Biochar Influence Soil CO2 Emission Four Years After Its Application to Soil?

Published Online: May 21, 2021

Page range: 109 - 116

DOI: https://doi.org/10.2478/ahr-2021-0016

Keywordsbiochar, N-fertilization, soil CO emission, sustainable agriculture

© 2021 Tatijana Kotuš et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Does Biochar Influence Soil CO₂ Emission Four Years After Its Application to Soil?

Keywords
biochar, N-fertilization, soil CO emission, sustainable agriculture