Soil moisture content determines the effect of the urease inhibitor NBPT on N2O emissions

Sanz Cobeña, Alberto; Ábalos Rodríguez, Diego; Meijide, Ana; Sánchez Martín, Laura y Vallejo Garcia, Antonio (2014). Soil moisture content determines the effect of the urease inhibitor NBPT on N2O emissions. "Mitigation And Adaptation Strategies For Global Change" ; pp. 1-14. ISSN 1381-2386. https://doi.org/10.1007/S11027-014-9569-0.

Descripción

Título: Soil moisture content determines the effect of the urease inhibitor NBPT on N2O emissions
Autor/es:
  • Sanz Cobeña, Alberto
  • Ábalos Rodríguez, Diego
  • Meijide, Ana
  • Sánchez Martín, Laura
  • Vallejo Garcia, Antonio
Tipo de Documento: Artículo
Título de Revista/Publicación: Mitigation And Adaptation Strategies For Global Change
Fecha: Marzo 2014
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Química y Tecnología de Alimentos
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (419kB) | Vista Previa

Resumen

Among the mitigation strategies to prevent nitrogen (N) losses from ureic fertilizers, urease inhibitors (UIs) have been demonstrated to promote high N use efficiency by reducing ammonia (NH3) volatilization. In the last few years, some field experiments have also shown its effectiveness in reducing nitrous oxide (N2O) losses from fertilized soils under conditions of low soil moisture. An incubation experiment was carried out with the aim of assessing the main biotic mechanisms behind N2O emissions once that the UIs N-(n-butyl) thiophosphoric triamid (NBPT) and phenil phosphorodiamidate (PPDA) were applied with Urea (U) under different soil moisture conditions (40, 60 and 80 % water-filled pore space, WFPS). In the same study we tried to analyze to what extent soil WFPS regulates the effect of these inhibitors on N2O emissions. The use of PPDA in our study allowed us to compare the effect of NBPT with that of another commercially available urease inhibitor, aiming to see if the results were inhibitor-specific or not. Based on the results from this experiment, a WFPS (i.e. 60 %) was chosen for a second study (i.e. mesocosm experiment) aiming to assess the efficiency of the UIs to indirectly affect N2O emissions through influencing the pool of soil mineral N. The N2O emissions at 40 % WFPS were almost negligible, being significantly lower from all fertilized treatments than that produced at 60 and 80 % WFPS. When compared to U alone, NBPT+U reduced the N2O emissions at 60 % WFPS but had no effect at 80 % WFPS. The application of PPDA significantly increased the emissions with respect to U at 80 % WFPS whereas no significant effect was found at 60 %. At 80 % WFPS, denitrification was the main source of N2O emissions for all treatments. In the mesocosm study, the application of NBPT+U was an effective strategy to reduce N2O emissions (75 % reduction compared to U alone), due to a lower soil ammonium (NH4 +) content induced by the inhibitor. These results suggest that adequate management of the UI NBPT could provide, under certain soil conditions, an opportunity for mitigation of N2O emissions from fertilized soils.

Más información

ID de Registro: 35240
Identificador DC: http://oa.upm.es/35240/
Identificador OAI: oai:oa.upm.es:35240
Identificador DOI: 10.1007/S11027-014-9569-0
URL Oficial: http://link.springer.com/article/10.1007/s11027-014-9548-5
Depositado por: Memoria Investigacion
Depositado el: 08 Jul 2015 14:00
Ultima Modificación: 08 Jul 2015 14:00
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM