Nitrogen use efficiency and residual effect of fertilizers withnitrification inhibitors

Alonso Ayuso, María and Gabriel Pérez, José Luis and Quemada Saenz-Badillos, Miguel (2016). Nitrogen use efficiency and residual effect of fertilizers withnitrification inhibitors. "European Journal of Agronomy", v. 80 ; pp. 1-8. ISSN 1161-0301. https://doi.org/10.1016/j.eja.2016.06.008.

Description

Title: Nitrogen use efficiency and residual effect of fertilizers withnitrification inhibitors
Author/s:
  • Alonso Ayuso, María
  • Gabriel Pérez, José Luis
  • Quemada Saenz-Badillos, Miguel
Item Type: Article
Título de Revista/Publicación: European Journal of Agronomy
Date: 5 July 2016
ISSN: 1161-0301
Volume: 80
Subjects:
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Producción Agraria
UPM's Research Group: Sistemas Agrarios (AgSystems) AgSystems
Creative Commons Licenses: Recognition - Non commercial - Share

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Abstract

Blending fertilizers with nitrification inhibitors (NI) is a technology to reduce nitrogen (N) losses. The application of NI could increase the soil N supply capacity over time and contribute to an enhancement of N-fertilizer recovery in some cropping systems. During two seasons, a field experiment with maize (Zea mays L.) was fertilized with ammonium sulfate nitrate (ASN) and DMPP (3,4 dimethylpyrazole phosphate) blended ASN (ENTEC) at two levels (130 and 170 kg N ha-1) under Mediterranean conditions. A control treatment with no added N fertilizer was also included. Maize yield, grain quality, nutritional state and fertilizer use efficiency were evaluated. Due to the observation of a soil residual effect, a non-fertilized sunflower (Helianthus annuus L.) was planted in the same plots to study the cumulative effect during a third experimental season. Laboratory determinations were performed in order to elucidate the possible sources of residual N. The second year, DMPP application allowed a 23% reduction of the fertilizer rate without decreasing crop yield or grain quality. In addition, the non-fertilized sunflower planted after the maize scavenge more N in treatments previously treated with ENTEC than with traditional fertilizers, increasing N use efficiency in the cropping systems. After DMPP application, N was conserved in non-ready soil available forms during at least one year and subsequently released to meet the sunflower crop demand. The potential N mineralization obtained from aerobic incubation under controlled conditions of soil samples collected before sunflower sowing was higher for ENTEC than ASN or control treatments. A higher δ15N in the soil indicated larger non-exchangeable NH4+ fixation in soils from the plots treated with ENTEC or ASN-170 than from the ASN-130 or the control. These results open the opportunity to increase N efficiency by designing crop rotations able to profit from the effect of NI on the soil residual N.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainAGL2014-52310RUnspecifiedUniversidad Politécnica de MadridR MEJORA DEL MANEJO DE LOS CULTIVOS CUBIERTA PARA AUMENTAR LA SOSTENIBILIDAD DE SISTEMAS DE CULTIVO EN REGADIO
Government of SpainIJCI201420175UnspecifiedUnspecifiedUnspecified
Madrid Regional GovernmentS2013/ABI-2717AGRISOSTUniversidad Politécnica de MadridSistemas agrarios sostenibles. Manejo de carbono, nitrógeno y agua para optimizar producción y calidad

More information

Item ID: 43138
DC Identifier: http://oa.upm.es/43138/
OAI Identifier: oai:oa.upm.es:43138
DOI: 10.1016/j.eja.2016.06.008
Official URL: https://doi.org/10.1016/j.eja.2016.06.008
Deposited by: Jose Luis Gabriel
Deposited on: 30 Aug 2016 06:03
Last Modified: 15 Mar 2019 16:03
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