Ground and airborne level optical sensors: is it possible to estimate maize crop N status?

Gabriel Pérez, José Luis; Zarco Tejada, Pablo y Quemada Saenz-Badillos, Miguel (2014). Ground and airborne level optical sensors: is it possible to estimate maize crop N status?. En: "Proceedings of the 18th Nitrogen Workshop", 30/06/2014-03/07/2014, Lisboa, Portugal. ISBN 978-972-8669-56-0. p. 2.

Descripción

Título: Ground and airborne level optical sensors: is it possible to estimate maize crop N status?
Autor/es:
  • Gabriel Pérez, José Luis
  • Zarco Tejada, Pablo
  • Quemada Saenz-Badillos, Miguel
Tipo de Documento: Ponencia en Congreso o Jornada (Otro)
Título del Evento: Proceedings of the 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: Producción Agraria
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Adjusting N fertilizer application to crop requirements is a key issue to improve fertilizer efficiency, reducing unnecessary input costs to farmers and N environmental impact. Among the multiple soil and crop tests developed, optical sensors that detect crop N nutritional status may have a large potential to adjust N fertilizer recommendation (Samborski et al. 2009). Optical readings are rapid to take and non-destructive, they can be efficiently processed and combined to obtain indexes or indicators of crop status. However, other physiological stress conditions may interfere with the readings and detection of the best crop nutritional status indicators is not always and easy task. Comparison of different equipments and technologies might help to identify strengths and weakness of the application of optical sensors for N fertilizer recommendation. The aim of this study was to evaluate the potential of various ground-level optical sensors and narrow-band indices obtained from airborne hyperspectral images as tools for maize N fertilizer recommendations. Specific objectives were i) to determine which indices could detect differences in maize plants treated with different N fertilizer rates, and ii) to evaluate its ability to identify N-responsive from non-responsive sites.

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Identificador DC: http://oa.upm.es/36920/
Identificador OAI: oai:oa.upm.es:36920
Depositado por: Memoria Investigacion
Depositado el: 23 Jul 2015 14:49
Ultima Modificación: 06 Jun 2016 14:49
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