Water and nitrogen footprint in an irrigated crop under mineral and organic fertilization

Requejo, Maria Isabel; Cartagena Causape, Maria Carmen; Villena Gordo, Raquel; Arce Martinez, Augusto; Ribas Elcorobarrutia, Francisco; Cabello Cabello, María Jesús; Tarquis Alfonso, Ana Maria y Castellanos Serrano, Maria Teresa (2014). Water and nitrogen footprint in an irrigated crop under mineral and organic fertilization. En: "18th Nitrogen Workshop", 30/06/2014-03/07/2014, Lisboa, Portugal. ISBN 978-972-8669-56-0. p. 3.

Descripción

Título: Water and nitrogen footprint in an irrigated crop under mineral and organic fertilization
Autor/es:
  • Requejo, Maria Isabel
  • Cartagena Causape, Maria Carmen
  • Villena Gordo, Raquel
  • Arce Martinez, Augusto
  • Ribas Elcorobarrutia, Francisco
  • Cabello Cabello, María Jesús
  • Tarquis Alfonso, Ana Maria
  • Castellanos Serrano, Maria Teresa
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 18th Nitrogen Workshop
Fechas del Evento: 30/06/2014-03/07/2014
Lugar del Evento: Lisboa, Portugal
Título del Libro: The nitrogen challenge: building a blueprint for nitrogen use efficiency and food security
Fecha: 2014
ISBN: 978-972-8669-56-0
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Matemática Aplicada a la Ingeniería Agronómica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

In order to establish rational nitrogen (N) application and reduce groundwater contamination, a clearer understanding of the N distribution through the growing season and its balance is crucial. Excessive doses of N and/or water applied to fertigated crops involve a substantial risk of aquifer contamination by nitrate; but knowledge of N cycling and availability within the soil could assist in avoiding this excess. In central Spain, the main horticultural fertigated crop is the melon type ?piel de sapo¿ and it is cultivated in vulnerable zones to nitrate pollution (Directive 91/676/CEE). However, until few years ago there were not antecedents related to the optimization of nitrogen fertilization together with irrigation. Water and N footprint are indicators that allow assessing the impact generated by different agricultural practices, so they can be used to improve the management strategies in fertigated crop systems. The water footprint distinguishes between blue water (sources of water applied to the crop, like irrigation and precipitation), green water (water used by the crop and stored in the soil), and it is furthermore possible to quantify the impact of pollution by calculating the grey water, which is defined as the volume of polluted water created from the growing and production of crops. On the other hand, the N footprint considers green N (nitrogen consumed by the crops and stored in the soil), blue N (N available for crop, like N applied with mineral and/or organic fertilizers, N applied with irrigation water and N mineralized during the crop period), whereas grey N is the amount of N-NO3- washed from the soil to the aquifer. All these components are expressed as the ratio between the components of water or N footprint and the yield (m3 t-1 or kg N t-1 respectively). The objetives of this work were to evaluate the impact derivated from the use of different fertilizer practices in a melon crop using water and N footprint.

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ID de Registro: 37578
Identificador DC: http://oa.upm.es/37578/
Identificador OAI: oai:oa.upm.es:37578
Depositado por: Memoria Investigacion
Depositado el: 05 Nov 2015 16:36
Ultima Modificación: 06 Jun 2016 16:36
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