Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina
The objectives of this study were i) to measure the soil N2O fluxes in a cropping system currently adopted by farmers of the region (FP), and in an ecologically intensified cropping system (EI) over two consecutive maize growing seasons (2011–12 and 2012–13), and ii) to relate N2O fluxes to soil fac...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Elsevier
2021
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/8816 https://www.sciencedirect.com/science/article/pii/S2352009421000079 https://doi.org/10.1016/j.geodrs.2021.e00362 |
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| author | Picone, Liliana Bayer, Cimélio Videla, Cecilia Rizzalli, Roberto Héctor Casanave Ponti, Sheila Mailén Andrade, Fernando Hector Garcia, Fernando |
| author_browse | Andrade, Fernando Hector Bayer, Cimélio Casanave Ponti, Sheila Mailén Garcia, Fernando Picone, Liliana Rizzalli, Roberto Héctor Videla, Cecilia |
| author_facet | Picone, Liliana Bayer, Cimélio Videla, Cecilia Rizzalli, Roberto Héctor Casanave Ponti, Sheila Mailén Andrade, Fernando Hector Garcia, Fernando |
| author_sort | Picone, Liliana |
| collection | INTA Digital |
| description | The objectives of this study were i) to measure the soil N2O fluxes in a cropping system currently adopted by farmers of the region (FP), and in an ecologically intensified cropping system (EI) over two consecutive maize growing seasons (2011–12 and 2012–13), and ii) to relate N2O fluxes to soil factors. Gas fluxes were measured using vented static chambers, from October through April in each season. Fluxes of N2O ranged from 3 to 88 μg N2O-N m−2 h−1 in 2011–12, and between 3 and 97 μg N2O-N m−2 h−1 in 2012–13. There was a significant (p < 0.05) interaction in N2O fluxes between management systems and sampling dates (p < 0.05) in both seasons. The highest N2O fluxes were observed often following a precipitation event and shortly after N fertilization. While management system impacted on maize grain yield, it had no significant (p > 0.05) effect on cumulative N2O emissions, which were, on average across two seasons, 558 g N2O-N ha−1 for the EI treatment and 578 g N2O-N ha−1 for the FP treatment. Cumulative N2O emissions tended to be 20% greater over 153 days in 2012–13 compared with over 156 days in 2011–12 mainly due to differences in total and timing precipitations. As there were no differences in cumulative N2O emissions between managements but grain yield was higher under EI, this treatment had lower yield-based N2O emissions (75 g N2O-N Mg−1 grain) compared with FP treatment (94 g N2O-N Mg−1 grain). The results showed that a moderate increase in N rate (10 kg N ha−1), combined with N split-application and UAN (urea-ammonium nitrate) as N source, as well as other crop management practices, can be a viable alternative to improve maize productivity without increasing the N2O environmental impact. |
| format | Artículo |
| id | INTA8816 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA88162023-01-05T13:54:12Z Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina Picone, Liliana Bayer, Cimélio Videla, Cecilia Rizzalli, Roberto Héctor Casanave Ponti, Sheila Mailén Andrade, Fernando Hector Garcia, Fernando Maíz Óxido Nitroso Emisiones de Gases de Efecto Invernadero Intensificación Molisoles Manejo del Suelo Argentina Maize Nitrous Oxide Greenhouse Gases Emissions Intensification Mollisols Soil Management The objectives of this study were i) to measure the soil N2O fluxes in a cropping system currently adopted by farmers of the region (FP), and in an ecologically intensified cropping system (EI) over two consecutive maize growing seasons (2011–12 and 2012–13), and ii) to relate N2O fluxes to soil factors. Gas fluxes were measured using vented static chambers, from October through April in each season. Fluxes of N2O ranged from 3 to 88 μg N2O-N m−2 h−1 in 2011–12, and between 3 and 97 μg N2O-N m−2 h−1 in 2012–13. There was a significant (p < 0.05) interaction in N2O fluxes between management systems and sampling dates (p < 0.05) in both seasons. The highest N2O fluxes were observed often following a precipitation event and shortly after N fertilization. While management system impacted on maize grain yield, it had no significant (p > 0.05) effect on cumulative N2O emissions, which were, on average across two seasons, 558 g N2O-N ha−1 for the EI treatment and 578 g N2O-N ha−1 for the FP treatment. Cumulative N2O emissions tended to be 20% greater over 153 days in 2012–13 compared with over 156 days in 2011–12 mainly due to differences in total and timing precipitations. As there were no differences in cumulative N2O emissions between managements but grain yield was higher under EI, this treatment had lower yield-based N2O emissions (75 g N2O-N Mg−1 grain) compared with FP treatment (94 g N2O-N Mg−1 grain). The results showed that a moderate increase in N rate (10 kg N ha−1), combined with N split-application and UAN (urea-ammonium nitrate) as N source, as well as other crop management practices, can be a viable alternative to improve maize productivity without increasing the N2O environmental impact. EEA Balcarce Fil: Picone, Liliana. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Bayer, Cimélio. Universidade Federal do Rio Grande do Sul. Faculdade de Agronomia. Departamento de Solos; Brasil Fil: Videla, Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil:. Rizzalli, Roberto Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Casanave Ponti, Sheila M. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Andrade, Fernando Héctor. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: García, Fernando O. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. 2021-03-04T14:53:32Z 2021-03-04T14:53:32Z 2021-01-14 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/8816 https://www.sciencedirect.com/science/article/pii/S2352009421000079 2352-0094 https://doi.org/10.1016/j.geodrs.2021.e00362 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Geoderma Regional 24 : e00362 (2021) |
| spellingShingle | Maíz Óxido Nitroso Emisiones de Gases de Efecto Invernadero Intensificación Molisoles Manejo del Suelo Argentina Maize Nitrous Oxide Greenhouse Gases Emissions Intensification Mollisols Soil Management Picone, Liliana Bayer, Cimélio Videla, Cecilia Rizzalli, Roberto Héctor Casanave Ponti, Sheila Mailén Andrade, Fernando Hector Garcia, Fernando Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina |
| title | Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina |
| title_full | Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina |
| title_fullStr | Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina |
| title_full_unstemmed | Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina |
| title_short | Nitrous oxide emissions in maize on mollisols in the Pampas of Argentina |
| title_sort | nitrous oxide emissions in maize on mollisols in the pampas of argentina |
| topic | Maíz Óxido Nitroso Emisiones de Gases de Efecto Invernadero Intensificación Molisoles Manejo del Suelo Argentina Maize Nitrous Oxide Greenhouse Gases Emissions Intensification Mollisols Soil Management |
| url | http://hdl.handle.net/20.500.12123/8816 https://www.sciencedirect.com/science/article/pii/S2352009421000079 https://doi.org/10.1016/j.geodrs.2021.e00362 |
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