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DIGITAL.CSIC
Doctoral thesis . 2014 . Peer-reviewed
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New approaches to evapotranspiration and transpiration measurements of stone fruits and table grapes

Authors: Suvočarev, Kosana;

New approaches to evapotranspiration and transpiration measurements of stone fruits and table grapes

Abstract

[ES] La cuantificación de la evapotranspiración y la transpiración y los coeficientes de cultivo correspondientes es fundamental para una programación adecuada del riego de los cultivos regados por goteo. Para el manejo de esta programación a tiempo real, las soluciones prácticas son preferibles ya que el uso consuntivo del agua afecta a la calidad, cantidad y disponibilidad del agua. Resulta de la mayor importancia la estimación de las necesidades hídricas de los cultivos con la mayor precisión posible en las distintas zonas de riego ya en uso o en proyección. El método de surface renewal (SR) surge como una alternativa interesante frente al método de covarianza de torbellinos (EC) para medir flujos turbulentos, especialmente para medir la evapotranspiración (ET) en superficies agrícolas. Se han evaluado dos alternativas recientes, con distintas bases teóricas, que representan un avance del método clásico de SR, la de Castellví (2004), SRCas, y la de Shapland et al. (2012a; 2012b), SRShap, para medir los flujos de calor sensible (H) y latente (LE) de plantaciones frutales regadas por goteo. Las correspondientes medidas se han realizado de mayo a septiembre de 2009 con dos equipos de EC, que incluyen un anemómetro sónico CSAT3 y un higrómetro de kriptón KH2O, uno ubicado sobre melocotonero temprano y el otro sobre melocotonero tardío.

[EN] The quantification of evapotranspiration and transpiration and corresponding crop coefficients is crucial for appropriate irrigation scheduling of drip-irrigated crops. Practical approaches to manage the real-time irrigation scheduling are preferred as the consumptive water use affects quality, quantity, and availability of water and its rete of flow. It results to be of mejor importance to accurately estimate the crop water requirements under dfferent conditions in irrigation zones that are already in use or in planning phase. Surface renewal (SR) analysis is en interesting alternative to eddy covariance (EC) flux measurements, especially for evapotranspiration (ET) measurements over agricultural surfaces. Two recent SR approaches, with different theoretical background, that from Castellví (2004), SRCas, and that from Shapland et al. (2012a; 2012b), SRShap, have been evaluated for both sensible (H) and latent (LE) heat flux determination over sparse crop surfaces. Por Ihis, two EC equipments, including a sonic anemometer CSAT3 and a krypton hygrometer KH2O, were located in two zones of drip-irrigated orchards of late- and early-maturing peaches. The measurement period was June—September 2009.

Esta tesis doctoral se ha realizado en el Departamento de Suelo y Agua de la Estación Experimental de Aula Dei (EEAD) del Consejo Superior de Investigaciones Científicas (CSIC) y se ha desarrollado gracias a una beca del programa JAE Predoctoral y a los proyectos “Programa Integral de Ahorro y Mejora Productiva del Agua de Riego en la Horticultura Española” (CSD2006 — 00067) y “Riego por aspersión: aplicación del agua, agronomía y flujos de retorno” (AGL2O1O-21681-C03-01) del Ministerio de Economía y Competitividad español.

149 Pags.- 29 Figs.- 14 Tabls.- Bibliographic references.

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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