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Memorias de investigación
Artículos en revistas:
Role of maize stover incorporation on nitrogen oxide emissions in a non-irrigated Mediterranean barley field
Año:2012
Áreas de investigación
  • Ciencias naturales y ciencias de la salud,
  • Agricultura
Datos
Descripción
Agricultural soils in semiarid Mediterranean areas are characterized by low organic matter contents and low fertility levels. Application of crop residues and/or manures as amendments is a cost-effective and sustainable alternative to overcome this problem. However, these management practices may induce important changes in the nitrogen oxide emissions from these agroecosystems, with additional impacts on carbon dioxide emissions. In this context, a field experiment was carried out with a barley (Hordeum vulgare L.) crop under Mediterranean conditions to evaluate the effect of combining maize (Zea mays L.) residues and N fertilizer inputs (organic and/or mineral) on these emissions. Crop yield and N uptake, soil mineral N concentrations, dissolved organic carbon (DOC), denitrification capacity, N2O, NO and CO2 fluxes were measured during the growing season. The incorporation of maize stover increased N2O emissions during the experimental period by c. 15 %. Conversely, NO emissions were significantly reduced in the plots amended with crop residues. The partial substitution of urea by pig slurry reduced net N2O emissions by 46 and 39 %, with and without the incorporation of crop residues respectively. Net emissions of NO were reduced 38 and 17 % for the same treatments. Molar DOC:NO3? ratio was found to be a robust predictor of N2O and NO fluxes. The main effect of the interaction between crop residue and N fertilizer application occurred in the medium term (4?6 month after application), enhancing N2O emissions and decreasing NO emissions as consequence of residue incorporation. The substitution of urea by pig slurry can be considered a good management strategy since N2O and NO emissions were reduced by the use of the organic residue.
Internacional
Si
JCR del ISI
Si
Título de la revista
Plant And Soil
ISSN
0032-079X
Factor de impacto JCR
2,733
Información de impacto
Datos JCR del año 2011
Volumen
364
DOI
Número de revista
Desde la página
357
Hasta la página
371
Mes
MARZO
Ranking
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Participantes
  • Autor: Diego Abalos Rodriguez (UPM)
  • Autor: Alberto Sanz Cobeña (UPM)
  • Autor: Lourdes Garcia Torres (UPM)
  • Autor: Jan Willem van Groeningen (Wageningen University)
  • Autor: Antonio Vallejo Garcia (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Contaminación de agroecosistemas por las prácticas agrícolas
  • Departamento: Química y Análisis Agrícola
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