High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O Fluxes
Biochar has been proposed as an amendment that can improve soil conditions, increase harvest yield, and reduce N losses through NO<sub>3</sub><sup>−</sup> leaching and N<sub>2</sub>O emissions. We conducted an experiment to test the hay biochar mitigatio...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/1/109 |
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| author | Jordi Escuer-Gatius Merrit Shanskiy Kaido Soosaar Alar Astover Henn Raave |
| author_facet | Jordi Escuer-Gatius Merrit Shanskiy Kaido Soosaar Alar Astover Henn Raave |
| author_sort | Jordi Escuer-Gatius |
| collection | DOAJ |
| description | Biochar has been proposed as an amendment that can improve soil conditions, increase harvest yield, and reduce N losses through NO<sub>3</sub><sup>−</sup> leaching and N<sub>2</sub>O emissions. We conducted an experiment to test the hay biochar mitigation effect on N<sub>2</sub>O emissions depending on its production temperature. The pot experiment consisted of the soil amendment with three different production temperature biochars (300 °C, 550 °C, 850 °C) alone and in combination with three different organic fertilizers (cattle slurry, slurry digestate, vinasse), in growth chamber conditions. The effects of biochar and fertilizer were both significant, but the interaction biochar:fertilizer was not. The amendment with the three fertilizer types and with the highest production temperature biochar resulted in significantly higher cumulative N<sub>2</sub>O fluxes. Biochar did not show a mitigation effect on N<sub>2</sub>O emissions when applied with organic fertilizer. Cumulative emissions were higher with biochar addition, with increasing emissions for increasing biochar production temperature. Our results support the idea that biochar cannot be considered as a universal tool for the reduction of N<sub>2</sub>O emissions. |
| first_indexed | 2024-12-20T13:14:26Z |
| format | Article |
| id | doaj.art-040f16a6e7e045fcb068edb033bff5dc |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-12-20T13:14:26Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-040f16a6e7e045fcb068edb033bff5dc2022-12-21T19:39:34ZengMDPI AGAgronomy2073-43952020-01-0110110910.3390/agronomy10010109agronomy10010109High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O FluxesJordi Escuer-Gatius0Merrit Shanskiy1Kaido Soosaar2Alar Astover3Henn Raave4Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, 51006 Tartu, EstoniaInstitute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, 51006 Tartu, EstoniaDepartment of Geography, Institute of Ecology and Earth Sciences, University of Tartu, 50090 Tartu, EstoniaInstitute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, 51006 Tartu, EstoniaInstitute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, 51006 Tartu, EstoniaBiochar has been proposed as an amendment that can improve soil conditions, increase harvest yield, and reduce N losses through NO<sub>3</sub><sup>−</sup> leaching and N<sub>2</sub>O emissions. We conducted an experiment to test the hay biochar mitigation effect on N<sub>2</sub>O emissions depending on its production temperature. The pot experiment consisted of the soil amendment with three different production temperature biochars (300 °C, 550 °C, 850 °C) alone and in combination with three different organic fertilizers (cattle slurry, slurry digestate, vinasse), in growth chamber conditions. The effects of biochar and fertilizer were both significant, but the interaction biochar:fertilizer was not. The amendment with the three fertilizer types and with the highest production temperature biochar resulted in significantly higher cumulative N<sub>2</sub>O fluxes. Biochar did not show a mitigation effect on N<sub>2</sub>O emissions when applied with organic fertilizer. Cumulative emissions were higher with biochar addition, with increasing emissions for increasing biochar production temperature. Our results support the idea that biochar cannot be considered as a universal tool for the reduction of N<sub>2</sub>O emissions.https://www.mdpi.com/2073-4395/10/1/109carbondenitrificationnitrificationnitrous oxidefertilizationpyrolysis |
| spellingShingle | Jordi Escuer-Gatius Merrit Shanskiy Kaido Soosaar Alar Astover Henn Raave High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O Fluxes Agronomy carbon denitrification nitrification nitrous oxide fertilization pyrolysis |
| title | High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O Fluxes |
| title_full | High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O Fluxes |
| title_fullStr | High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O Fluxes |
| title_full_unstemmed | High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O Fluxes |
| title_short | High-Temperature Hay Biochar Application into Soil Increases N<sub>2</sub>O Fluxes |
| title_sort | high temperature hay biochar application into soil increases n sub 2 sub o fluxes |
| topic | carbon denitrification nitrification nitrous oxide fertilization pyrolysis |
| url | https://www.mdpi.com/2073-4395/10/1/109 |
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