Determining Evapotranspiration in an Olive Orchard in Southwest Spain

Ruiz, Jose Manuel Torres; Luque, José Enrique Fernández; Moreno, Ignacio F. Girón; Vicente, Rafael Romero; Bocanegra, Juan Antonio Jiménez; García-Tejero, Iván Francisco; Palomo, María José Martín

doi:10.17660/actahortic.2012.949.36

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…To take advantage of intrinsic farm conditions and reduce the uncertainty incurred by extrinsic conditions, a farmer can follow various strategies. Here, we consider crop management that can lead to small but significant changes of the crop coefficient K c such as heavy pruning S PH which can effectively reduce the evapotranspiration of tree crops [50,51] versus light pruning S PL . Furthermore, we consider that irrigation scheduling strategies S I can vary.…”

Section: Strategiesmentioning

confidence: 99%

Comparison of Three Computational Approaches for Tree Crop Irrigation Decision Support

et al. 2020

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This paper explores methodologies for developing intelligent automated decision systems for complex processes that contain uncertainties, thus requiring computational intelligence. Irrigation decision support systems (IDSS) promise to increase water efficiency while sustaining crop yields. Here, we explored methodologies for developing intelligent IDSS that exploit statistical, measured, and simulated data. A simple and a fuzzy multicriteria approach as well as a Decision Tree based system were analyzed. The methodologies were applied in a sample of olive tree farms of Heraklion in the island of Crete, Greece, where water resources are scarce and crop management is generally empirical. The objective is to support decision for optimal financial profit through high yield while conserving water resources through optimal irrigation schemes under various (or uncertain) intrinsic and extrinsic conditions. Crop irrigation requirements are modelled using the FAO-56 equation. The results demonstrate that the decision support based on probabilistic and fuzzy approaches point to strategies with low amounts and careful distributed water irrigation strategies. The decision tree shows that decision can be optimized by examining coexisting factors. We conclude that irrigation-based decisions can be highly assisted by methods such as decision trees given the right choice of attributes while keeping focus on the financial balance between cost and revenue.

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Section: Strategiesmentioning

confidence: 99%

Comparison of Three Computational Approaches for Tree Crop Irrigation Decision Support

et al. 2020

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“…There are few studies that quantify the seasonal variability of E leaf and WUE leaf by direct measurement with a portable gas analyser in an olive grove. Water vapor fluxes were measured normally in olive groves with other techniques such as: sap flow sensors (López-Bernal et al, 2015;Ayyoub et al, 2017), chambers (Villalobos et al, 2012) or semi-empirical models (Yunusa et al, 2008;Torres-Ruiz et al, 2012). In our study we can see that the irrigated period [DOY ~ 116, DOY ~ 298], coincides with higher rates of E leaf , with maxima in October (Fig.…”

Section: Water Vapor Fluxes and Water Use Efficiencymentioning

confidence: 53%

The temporary effect of weed-cover maintenance on transpiration and carbon assimilation of olive trees

Aranda-Barranco

Serrano-Ortíz

Kowalski

et al. 2023

Agricultural and Forest Meteorology

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Single and basal crop coefficients for estimation of water use of tree and vine woody crops with consideration of fraction of ground cover, height, and training system for Mediterranean and warm temperate fruit and leaf crops

Pereira,

Paredes,

Oliveira

et al. 2023

Irrig Sci

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This paper reviews the research on the FAO56 single and basal crop coefficients of fruit trees and vines performed over the past twenty-five years and focus on Mediterranean and warm temperate trees and vines. Two companion papers (López-Urrea et al., (2023) Single and basal crop coefficients for estimation of water use of tree and vine woody crops with consideration of fraction of ground cover, height, and training system for temperate climate fruit crops. Irrig Sci (submitted); Paredes et al. (2023) Single and basal crop coefficients for estimation of water use of tree and vine woody crops with consideration of fraction of ground cover, height, and training system for tropical and subtropical fruit crops. Irrig Sci (submitted)) are dedicated, respectively, to Temperate and to Tropical and Subtropical trees and vines. The main objective of the paper is to update available information on single (Kc) and basal (Kcb) standard crop coefficients, and to provide for updating and completing the FAO56 tabulated Kc and Kcb. The Kc is the ratio between non-stressed crop evapotranspiration (ETc) and the grass reference evapotranspiration (ETo), while Kcb is the ratio between crop transpiration (Tc) and ETo. The selection and analysis of the literature were performed considering only studies that adhere to the FAO56 method, thus computing ETo with the FAO Penman–Monteith ETo equation, the ASCE grass ETo, or another equation that could be properly related with the former, and ETc, or Tc, was obtained using properly accurate field measurements on crops under pristine or eustress conditions. The crops considered refer to Mediterranean (grapes and olive) and warm temperate areas (avocado, citrus, persimmon, loquat, and tea) fruit and leaf crops. Papers satisfying the above conditions were selected to provide for standard Kc and Kcb data. Preferably, studies should report on the crop cultivar and rootstock, planting density or plant spacing, fraction of ground cover (fc), crop height (h), crop age and training systems. Additional information was collected on pruning and irrigation method and strategy. The ranges of reported Kc and Kcb values were grouped according to crop density in relation with fc, h, and the training system, namely vase, hedgerow, or trellis systems. Literature collected Kc or Kcb values were compared with previously tabulated Kc and Kcb values, namely in FAO56, to define the standard Kc and Kcb values for the referred selected crops. The tabulated values are, therefore, transferable to other locations and aimed for use in crop water requirement computations and modeling, mainly for irrigation planning and scheduling, and for supporting improved water use and saving in orchards and vineyards.

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Determining Evapotranspiration in an Olive Orchard in Southwest Spain

Abstract: The aim of this work was to evaluate, for an olive orchard in the Aljarafe county, the method developed by Orgaz et al.

Cited by 3 publications

References 8 publications

Comparison of Three Computational Approaches for Tree Crop Irrigation Decision Support

Comparison of Three Computational Approaches for Tree Crop Irrigation Decision Support

The temporary effect of weed-cover maintenance on transpiration and carbon assimilation of olive trees

Single and basal crop coefficients for estimation of water use of tree and vine woody crops with consideration of fraction of ground cover, height, and training system for Mediterranean and warm temperate fruit and leaf crops

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