Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops
Nitrous oxide (N2O) is emitted to the atmosphere as a by‐product of nitrification and denitrification by soil microbial processes. Differences in climate, soil and management regulate these processes, causing N2O emissions to vary in space and time. This study aimed to identify and rank the soil pro...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Wiley
2019
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| Online Access: | https://onlinelibrary.wiley.com/doi/abs/10.1111/ejss.12080 http://hdl.handle.net/20.500.12123/5503 https://doi.org/10.1111/ejss.12080 |
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| author | Cosentino, Vanina Rosa Noemi Figueiro Aureggi, Santiago Andres Taboada, Miguel Angel |
| author_browse | Cosentino, Vanina Rosa Noemi Figueiro Aureggi, Santiago Andres Taboada, Miguel Angel |
| author_facet | Cosentino, Vanina Rosa Noemi Figueiro Aureggi, Santiago Andres Taboada, Miguel Angel |
| author_sort | Cosentino, Vanina Rosa Noemi |
| collection | INTA Digital |
| description | Nitrous oxide (N2O) is emitted to the atmosphere as a by‐product of nitrification and denitrification by soil microbial processes. Differences in climate, soil and management regulate these processes, causing N2O emissions to vary in space and time. This study aimed to identify and rank the soil properties that control N2O emissions in non‐tilled soils under different crops. Over a period of 2 years, gas samples were taken from closed chambers and soil properties were determined once per season. N2O emission rates were highly variable (from −15 to 314 µg N2O‐N m−2 hour−1). A regression tree analysis allowed us to classify soil N2O emissions into three groups, separated by topsoil temperature (primary factor) and water‐filled pore space (WFPS, secondary factor). N2O emissions were small (mean 4.22 µg N2O‐N m−2 hour−1) with topsoil temperature less than 14°C (Group 1), large (mean 61.87 µg N2O‐N m−2 hour−1) with topsoil temperature between 14 and 23°C and WFPS more than 58.5% (Group 2) and moderate (mean 21.4 µg N2O‐N m−2 hour−1) with topsoil temperature more than 23°C and WFPS less than 58.5% (Group 3). These emission groups allow for more efficient sampling of N2O emissions in the field: in winter, when topsoil temperatures are less than 14°C and N2O emissions are expected to be small or even negligible, sampling frequency can be reduced; in autumn and spring, when topsoil temperatures are more than 14°C and WFPS is more than 60–70%, sampling frequency should be increased. |
| format | info:ar-repo/semantics/artículo |
| id | INTA5503 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA55032019-07-15T15:53:41Z Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops Cosentino, Vanina Rosa Noemi Figueiro Aureggi, Santiago Andres Taboada, Miguel Angel Óxido Nitroso Suelo Cultivos Emisiones de Gas Cero-labranza Temperatura Nitrous Oxide Soil Crops Gas Emissions Zero Tillage Temperature Nitrous oxide (N2O) is emitted to the atmosphere as a by‐product of nitrification and denitrification by soil microbial processes. Differences in climate, soil and management regulate these processes, causing N2O emissions to vary in space and time. This study aimed to identify and rank the soil properties that control N2O emissions in non‐tilled soils under different crops. Over a period of 2 years, gas samples were taken from closed chambers and soil properties were determined once per season. N2O emission rates were highly variable (from −15 to 314 µg N2O‐N m−2 hour−1). A regression tree analysis allowed us to classify soil N2O emissions into three groups, separated by topsoil temperature (primary factor) and water‐filled pore space (WFPS, secondary factor). N2O emissions were small (mean 4.22 µg N2O‐N m−2 hour−1) with topsoil temperature less than 14°C (Group 1), large (mean 61.87 µg N2O‐N m−2 hour−1) with topsoil temperature between 14 and 23°C and WFPS more than 58.5% (Group 2) and moderate (mean 21.4 µg N2O‐N m−2 hour−1) with topsoil temperature more than 23°C and WFPS less than 58.5% (Group 3). These emission groups allow for more efficient sampling of N2O emissions in the field: in winter, when topsoil temperatures are less than 14°C and N2O emissions are expected to be small or even negligible, sampling frequency can be reduced; in autumn and spring, when topsoil temperatures are more than 14°C and WFPS is more than 60–70%, sampling frequency should be increased. Instituto de Suelos Fil: Cosentino, Vanina Rosa Noemi. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fertilidad y Fertilizantes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Figueiro Aureggi, Santiago Andres. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fertilidad y Fertilizantes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Taboada, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fertilidad y Fertilizantes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2019-07-15T15:51:46Z 2019-07-15T15:51:46Z 2013-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://onlinelibrary.wiley.com/doi/abs/10.1111/ejss.12080 http://hdl.handle.net/20.500.12123/5503 1351-0754 1365-2389 https://doi.org/10.1111/ejss.12080 eng info:eu-repo/semantics/restrictedAccess application/pdf Wiley European Journal Of Soil Science 64 (5) : 550-557 (October 2013) |
| spellingShingle | Óxido Nitroso Suelo Cultivos Emisiones de Gas Cero-labranza Temperatura Nitrous Oxide Soil Crops Gas Emissions Zero Tillage Temperature Cosentino, Vanina Rosa Noemi Figueiro Aureggi, Santiago Andres Taboada, Miguel Angel Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops |
| title | Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops |
| title_full | Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops |
| title_fullStr | Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops |
| title_full_unstemmed | Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops |
| title_short | Hierarchy of factors driving N2O emissions in non‐tilled soils under different crops |
| title_sort | hierarchy of factors driving n2o emissions in non tilled soils under different crops |
| topic | Óxido Nitroso Suelo Cultivos Emisiones de Gas Cero-labranza Temperatura Nitrous Oxide Soil Crops Gas Emissions Zero Tillage Temperature |
| url | https://onlinelibrary.wiley.com/doi/abs/10.1111/ejss.12080 http://hdl.handle.net/20.500.12123/5503 https://doi.org/10.1111/ejss.12080 |
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