Soil nitrous oxide emissions under different management practices in the semiarid region of the Argentinian Pampas
The aim of this study was to analyze the influence of different crop sequences [soybean-corn and soybean-soybean] and tillage systems [no tillage and reduced tillage] on nitrous oxide [N2O] soil emissions under field conditions. The experiment was carried out in Manfredi, Córdoba province, Argentina...
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| Otros Autores: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Materias: | |
| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2012Alvarez.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | The aim of this study was to analyze the influence of different crop sequences [soybean-corn and soybean-soybean] and tillage systems [no tillage and reduced tillage] on nitrous oxide [N2O] soil emissions under field conditions. The experiment was carried out in Manfredi, Córdoba province, Argentina on an Entic Haplustoll and N2O emissions were measured in the field during a year. N2O fluxes were low during winter, but in late spring it peaked. For fallow, N-NO3-content was the most important variable to explain N2O emissions. For growing period water-filled pores was the main variable explaining N2O emissions. Nitrogen fertilization of corn crop increased N2O-N emissions, whereas no significant differences were found due to the tillage system. Measured annual N2O-N emissions were generally lower than those calculated using the methodology proposed by the Intergovernmental Panel on Climate Change. |
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| ISSN: | 1385-1314 |