Crop and fallow contribution to N2O emissions of contrasting crop sequences
Crop sequences (CS) in South America, characterized by a high proportion of soybean and a concerning soil nutrient mining, urgently require reconfiguration towards more sustainable cropping systems. New configurations of CS may impact nitrous oxide (N2O) emissions. Although reported reported at the...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Elsevier
2025
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/22033 https://www.sciencedirect.com/science/article/abs/pii/S1161030125000784 https://doi.org/10.1016/j.eja.2025.127582 |
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| author | Gregorutti, Viviana Carolina Novelli, Leonardo Esteban Cuatrin, Alejandra Benedit, Beltrán G. Caviglia, Octavio |
| author_browse | Benedit, Beltrán G. Caviglia, Octavio Cuatrin, Alejandra Gregorutti, Viviana Carolina Novelli, Leonardo Esteban |
| author_facet | Gregorutti, Viviana Carolina Novelli, Leonardo Esteban Cuatrin, Alejandra Benedit, Beltrán G. Caviglia, Octavio |
| author_sort | Gregorutti, Viviana Carolina |
| collection | INTA Digital |
| description | Crop sequences (CS) in South America, characterized by a high proportion of soybean and a concerning soil nutrient mining, urgently require reconfiguration towards more sustainable cropping systems. New configurations of CS may impact nitrous oxide (N2O) emissions. Although reported reported at the CS level in a few studies, the specific contributions of each sequence component, such as fallow periods or crops, have rarely been thoroughly analyzed. The aims were: i) to quantify total N2O emission from different CS with contrasting cropping intensity in a long-term experiment that included all phases, ii) evaluate the drivers of N2O emission fluxes and iii) estimate the contribution of each component of the CS to total N2O emissions. The study was conducted combining crops of soybean (S), maize (M), wheat (W) and field pea (P), from S and M in monoculture to intensified CS with four crops in two years, which included W/S and P/M double crops. We simultaneously measured N-N2O emission, soil nitrate content (N-NO3) and water-filled pore space (WFPS) approximately twice a month during two seasons (2019/20–2020/2021). Low frequencies of elevated values were observed in both N-N2O emissions and N-NO3 levels across all CS. Cumulative N-N2O emissions of CS during two seasons averaged 881 g ha−1, being higher in M-W/S and P/M-W/S, than other CS, not attributable to their configuration nor N inputs. We detected more differences between phases of the same CS than among CS. The contribution of each component of CS was different depending on the CS and their respective phase. We did not find close associations between WFPS or N-NO3 vs N-N2O fluxes. The annualized emission factor obtained at CS level were in the lower bound of the values range usually cited, even slightly lower. The study highlights the importance of including the phase of rotation in studies dealing with N-N2O measurements was reemphasized. Strategies that focus on increasing grain yields and reducing fallow periods remain effective in minimizing emissions per unit of production. These approaches also promote income stability and soil health by facilitating the return of crop residues, contributing to both environmental and economic sustainability. |
| format | info:ar-repo/semantics/artículo |
| id | INTA22033 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA220332025-04-24T12:08:35Z Crop and fallow contribution to N2O emissions of contrasting crop sequences Gregorutti, Viviana Carolina Novelli, Leonardo Esteban Cuatrin, Alejandra Benedit, Beltrán G. Caviglia, Octavio Cultivos Cultivo Secuencial Barbecho Sostenibilidad Óxido Nitroso Crops Sequential Cropping Fallow Sustainability Nitrous Oxide N2O Crop sequences (CS) in South America, characterized by a high proportion of soybean and a concerning soil nutrient mining, urgently require reconfiguration towards more sustainable cropping systems. New configurations of CS may impact nitrous oxide (N2O) emissions. Although reported reported at the CS level in a few studies, the specific contributions of each sequence component, such as fallow periods or crops, have rarely been thoroughly analyzed. The aims were: i) to quantify total N2O emission from different CS with contrasting cropping intensity in a long-term experiment that included all phases, ii) evaluate the drivers of N2O emission fluxes and iii) estimate the contribution of each component of the CS to total N2O emissions. The study was conducted combining crops of soybean (S), maize (M), wheat (W) and field pea (P), from S and M in monoculture to intensified CS with four crops in two years, which included W/S and P/M double crops. We simultaneously measured N-N2O emission, soil nitrate content (N-NO3) and water-filled pore space (WFPS) approximately twice a month during two seasons (2019/20–2020/2021). Low frequencies of elevated values were observed in both N-N2O emissions and N-NO3 levels across all CS. Cumulative N-N2O emissions of CS during two seasons averaged 881 g ha−1, being higher in M-W/S and P/M-W/S, than other CS, not attributable to their configuration nor N inputs. We detected more differences between phases of the same CS than among CS. The contribution of each component of CS was different depending on the CS and their respective phase. We did not find close associations between WFPS or N-NO3 vs N-N2O fluxes. The annualized emission factor obtained at CS level were in the lower bound of the values range usually cited, even slightly lower. The study highlights the importance of including the phase of rotation in studies dealing with N-N2O measurements was reemphasized. Strategies that focus on increasing grain yields and reducing fallow periods remain effective in minimizing emissions per unit of production. These approaches also promote income stability and soil health by facilitating the return of crop residues, contributing to both environmental and economic sustainability. EEA Paraná Fil: Gregorutti, Viviana Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Fil: Gregorutti, Viviana Carolina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina Fil: Novelli, Leonardo Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina Fil: Novelli, Leonardo Esteban. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina Fil: Novelli, Leonardo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Cuatrin, Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Fil: Cuatrin, Alejandra. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina Fil: Benedit, Beltrán G. Bayer Crop Science, Pergamino; Argentina Fil: Caviglia, Octavio. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina Fil: Caviglia, Octavio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2025-04-24T12:05:37Z 2025-04-24T12:05:37Z 2025-06 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/22033 https://www.sciencedirect.com/science/article/abs/pii/S1161030125000784 1161-0301 1873-7331 https://doi.org/10.1016/j.eja.2025.127582 eng info:eu-repograntAgreement/INTA/2019-RIST-E1-I503-001, Red de ensayos de larga duración info:eu-repograntAgreement/INTA/2019-PE-E1-I011-001, Intensificacion Sustentable de la Agricultura en la Region Pampeana info:eu-repograntAgreement/INTA/2023-PE-L03-I058, Intensificación sostenible de los agro ecosistemas de la región chaqueña en el contexto climático actual info:eu-repo/semantics/restrictedAccess 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 European Journal of Agronomy 167 : 127582. (June 2025) |
| spellingShingle | Cultivos Cultivo Secuencial Barbecho Sostenibilidad Óxido Nitroso Crops Sequential Cropping Fallow Sustainability Nitrous Oxide N2O Gregorutti, Viviana Carolina Novelli, Leonardo Esteban Cuatrin, Alejandra Benedit, Beltrán G. Caviglia, Octavio Crop and fallow contribution to N2O emissions of contrasting crop sequences |
| title | Crop and fallow contribution to N2O emissions of contrasting crop sequences |
| title_full | Crop and fallow contribution to N2O emissions of contrasting crop sequences |
| title_fullStr | Crop and fallow contribution to N2O emissions of contrasting crop sequences |
| title_full_unstemmed | Crop and fallow contribution to N2O emissions of contrasting crop sequences |
| title_short | Crop and fallow contribution to N2O emissions of contrasting crop sequences |
| title_sort | crop and fallow contribution to n2o emissions of contrasting crop sequences |
| topic | Cultivos Cultivo Secuencial Barbecho Sostenibilidad Óxido Nitroso Crops Sequential Cropping Fallow Sustainability Nitrous Oxide N2O |
| url | http://hdl.handle.net/20.500.12123/22033 https://www.sciencedirect.com/science/article/abs/pii/S1161030125000784 https://doi.org/10.1016/j.eja.2025.127582 |
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