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

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

Description

Title: DMPSA appliCation reduces N2O emissions from exogenous NH4 + and NO3 - sources in irrigated maize
Author/s:
  • Garcia Marco, Sonia
  • Guardia Vázquez, Guillermo
  • Sanz Cobeña, Alberto
  • Cárdenas, Laura
  • Dixon, Elizabeth R.
  • Repullo, Miguel Ángel
  • Vallejo Garcia, Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: The 7th International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world",
Event Dates: 4-8 Diciembre 2016
Event Location: Melbourne, Australia
Title of Book: Proceedings of the 2016 International Nitrogen Initiative Conference, "Solutions to improve nitrogen use efficiency for the world",
Date: 2016
Subjects:
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Química y Tecnología de Alimentos
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 48252
DC Identifier: http://oa.upm.es/48252/
OAI Identifier: oai:oa.upm.es:48252
Official URL: http://www.ini2016.com/
Deposited by: Memoria Investigacion
Deposited on: 13 Nov 2017 09:35
Last Modified: 16 Nov 2017 14:05
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