DMPSA appliCation reduces N2O emissions from exogenous NH4 + and NO3 - sources in irrigated maize

Garcia Marco, Sonia; Guardia Vázquez, Guillermo; Sanz Cobeña, Alberto; Cárdenas, Laura; Dixon, Elizabeth R.; Repullo, Miguel Ángel y Vallejo Garcia, Antonio (2016). DMPSA appliCation reduces N2O emissions from exogenous NH4 + and NO3 - sources in irrigated maize. En: "The 7th International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world",", 4-8 Diciembre 2016, Melbourne, Australia. p. 4.

Descripción

Título: DMPSA appliCation reduces N2O emissions from exogenous NH4 + and NO3 - sources in irrigated maize
Autor/es:
  • Garcia Marco, Sonia
  • Guardia Vázquez, Guillermo
  • Sanz Cobeña, Alberto
  • Cárdenas, Laura
  • Dixon, Elizabeth R.
  • Repullo, Miguel Ángel
  • Vallejo Garcia, Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: The 7th International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world",
Fechas del Evento: 4-8 Diciembre 2016
Lugar del Evento: Melbourne, Australia
Título del Libro: Proceedings of the 2016 International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world",
Fecha: 2016
Materias:
Escuela: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Departamento: Química y Tecnología de Alimentos
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Agriculture is a major anthropogenic source of nitrous oxide (N2O). Application of nitrogenous (N) fertilizers enhances the emission of this greenhouse gas (GHG), mainly due to the biogenic processes of nitrification and denitrification. The use of nitrification inhibitors (NIs), that delay the microbial oxidation of NH4 + to NO3 -, has been reported as a successful tool for mitigating N2O losses. In this context, a field experiment using 15N labeled fertilizers was carried out in an irrigated Mediterranean maize field aiming to evaluate the effectiveness of the NI 2-(3,4-dimethyl-1H-pyrazol-1-yl) succinic acid isomeric mixture (DMPSA) on mitigating N2O emissions, and assess the processes involved in its production. The experiment, performed in 1 m2 microplots, involved the application of 15NH4NO3 or NH4 15NO3 - (with and without DMPSA) to quantify the amount of N2O coming from exogenous NH4 +, exogenous NO3 - and endogenous soil N. The resulting N2O fluxes confirmed that the addition of DMPSA led to a significant (54%) abatement of this GHG. In this experiment, both nitrification and denitrification were partially inhibited by DMPSA. When NI was not applied, the largest N2O emissions were expected from NH4 + than from NO3 --based fertilizers due to nitrification.

Más información

ID de Registro: 48252
Identificador DC: http://oa.upm.es/48252/
Identificador OAI: oai:oa.upm.es:48252
URL Oficial: http://www.ini2016.com/
Depositado por: Memoria Investigacion
Depositado el: 13 Nov 2017 09:35
Ultima Modificación: 16 Nov 2017 14:05
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