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Crop Coefficients and Transpiration of a Super Intensive Arbequina Olive Orchard using the Dual Kc Approach and the Kcb Computation with the Fraction of Ground Cover and Height

Published on Feb 22, 2019in Water 2.52
· DOI :10.3390/w11020383
T.A. Paço11
Estimated H-index: 11
,
Paula Paredes18
Estimated H-index: 18
+ 2 AuthorsFrancisco L. Santos11
Estimated H-index: 11
Cite
Abstract
The SIMDualKc model was used to simulate crop water requirements for a super high density olive orchard in the region of Alentejo, Portugal. This model uses the dual crop coefficient approach to estimate and partitioning the actual crop evapotranspiration (ETc act) and therefore to perform the soil water balance. The model was calibrated with 2011 tree transpiration using trunk sap flow measurements and was validated using similar data from 2012 and tested with 2013 data. Low root mean square errors (RMSE 0.25) were obtained. Further validation was performed comparing modelled ETc act with eddy covariance measurements. These indicators support the appropriateness of using SIMDualKc to guide irrigation management. The basal crop coefficient (Kcb) curves obtained with SIMDualKc for those 3 years were compared with the Kcb values computed with the Allen and Pereira approach (A&P approach) where Kcb is estimated from the fraction of ground cover and plant height considering an adjustment factor for crop stomatal control (Fr). Fr values were obtained through a trial and error procedure through comparing the Kcb estimated with this approach and with SIMDualKc. The Kcb curves obtained by both methods resulted highly correlated, which indicates that the A&P approach may be used in the irrigation management practice to estimate crop water requirements. Results of performing the soil water balance with SIMDualKc have shown that soil evaporation is a large fraction of ETc act, varying between 41% and 45% for the 3 years under study. Irrigation, applied with a drip system, represented 39 to 56% of ETc act, which shows the great importance of irrigation to achieve the water requirements of super intensive olive orchards. Nevertheless, the analysis has shown that the irrigation management adopted at the orchard produces a water deficit larger than desirable, with a ratio of ETc act to non-stressed crop evapotranspiration (ETc) varying from 70% to 94% during the mid-season, when that ratio for a eustress irrigation management could be around 90%.
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  • Citations (1)
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References74
Newest
Published on Sep 20, 2018
Matthew Haworth17
Estimated H-index: 17
,
Giovanni Marino8
Estimated H-index: 8
+ 3 AuthorsMauro Centritto28
Estimated H-index: 28
Heat waves are predicted to increase in frequency and duration in many regions as global temperatures rise. These transient increases in temperature above normal average values will have pronounced impacts upon the photosynthetic and stomatal physiology of plants. During the summer of 2017, much of the Mediterranean experienced a severe heat wave. Here, we report photosynthetic leaf gas exchange and chlorophyll fluorescence parameters of olive (Olea europaea cv. Leccino) grown under water defici...
Published on Aug 16, 2018in Water 2.52
Huimeng Zhang2
Estimated H-index: 2
,
Guanhua Huang25
Estimated H-index: 25
+ 2 AuthorsQuanzhong Huang13
Estimated H-index: 13
Published on Apr 6, 2018in Agronomy
Francisco L. Santos11
Estimated H-index: 11
Evapotranspiration (ETc) partitioning and obtaining of FAO56 dual crop coefficient (Kc) for olive was carried out with the SIMDualKc software application for root zone and topsoil soil water balance based on the dual crop coefficients. A simplified two source-energy balance model (STSEB), based on daily remotely sensed soil and canopy thermal infrared data and retrieval of surface fluxes, also provided information on partitioning ETc for the olive orchard. Both models were calibrated and validat...
Published on Apr 1, 2018in Agricultural Water Management 3.54
C.M. Padilla-Díaz7
Estimated H-index: 7
(CSIC: Spanish National Research Council),
Celia M. Rodriguez-Dominguez12
Estimated H-index: 12
(UTAS: University of Tasmania)
+ 5 AuthorsJ.E. Fernández21
Estimated H-index: 21
(CSIC: Spanish National Research Council)
We evaluated the suitability of scheduling a regulated deficit irrigation strategy in a hedgerow olive orchard with high plant density from leaf turgor related measurements. Measurements were made for two consecutive years at an olive orchard with 1667 ‘Arbequina’ trees per hectare where we had two deficit irrigation treatments, 45RDICC and 45RDITP, plus a full irrigation as a control. The two 45RDI treatments consisted on applying the same regulated deficit irrigation strategy, aimed to supply ...
Published on Apr 1, 2018in Agricultural Water Management 3.54
Luis E. Ahumada-Orellana2
Estimated H-index: 2
(University of Talca),
Samuel Ortega-Farías19
Estimated H-index: 19
(University of Talca),
Peter S. Searles24
Estimated H-index: 24
(CONICET: National Scientific and Technical Research Council)
An increase in olive oil consumption has occurred worldwide in the last decades and has resulted in more land area being dedicated to olive orchards in several southern hemisphere countries. In order to achieve sustainable productivity under the increasing water scarcity, optimal water use is essential. Thus, a field experiment was conducted during four consecutive growing seasons (2010–2011 to 2013–2014) to evaluate olive oil quality in response to irrigation cut-off strategies applied after fr...
Published on Apr 1, 2018in Agricultural Water Management 3.54
Dario Autovino4
Estimated H-index: 4
(University of Palermo),
Giovanni Rallo12
Estimated H-index: 12
(UniPi: University of Pisa),
Giuseppe Provenzano22
Estimated H-index: 22
(University of Palermo)
The paper analyzes the performance of Hydrus-2D model to simulate the dynamic of soil water contents and transpiration fluxes in an olive orchard in which two different irrigation systems were used in 2011 and 2012. The relationship between measured midday stem water potential, MSWP, and simulated relative transpiration (ratio between simulated actual and maximum crop transpiration), Ks, was also identified with the aim to use the model for crop water status predictions. Finally, a scenario anal...
Published on Feb 8, 2018in Water 2.52
Giovanni Rallo12
Estimated H-index: 12
,
Giuseppe Provenzano22
Estimated H-index: 22
+ 1 AuthorsÀngela Sirera1
Estimated H-index: 1
(UniPi: University of Pisa)
Accurate soil water status measurements across spatial and temporal scales are still a challenging task, specifically at intermediate spatial (0.1–10 ha) and temporal (minutes to days) scales. Consequently, a gap in knowledge limits our understanding of the reliability of the spatial measurements and its practical applicability in agricultural water management. This paper compares the cumulative EM38 (Geonics Ltd., Mississauga, ON, Canada) response collected by placing the sensor above ground wi...
Published on Feb 1, 2018in Tree Physiology 3.48
Sara Marañón-Jiménez9
Estimated H-index: 9
(UGR: University of Granada),
J. Van den Bulcke7
Estimated H-index: 7
(UGent: Ghent University)
+ 4 AuthorsKathy Steppe38
Estimated H-index: 38
(UGent: Ghent University)
Insertion of thermal dissipation (TD) sap flow sensors in living tree stems causes damage of the wood tissue, as is the case with other invasive methods. The subsequent wound formation is one of the main causes of underestimation of tree water-use measured by TD sensors. However, the specific alterations in wood anatomy in response to inserted sensors have not yet been characterized, and the linked dysfunctions in xylem conductance and sensor accuracy are still unknown. In this study, we investi...
Published on Sep 1, 2017in Agricultural Water Management 3.54
N. Conceição7
Estimated H-index: 7
(Instituto Superior de Agronomia),
Luca Tezza2
Estimated H-index: 2
(UNIPD: University of Padua)
+ 3 AuthorsM. Isabel Ferreira2
Estimated H-index: 2
(Instituto Superior de Agronomia)
A long-term experiment was conducted to study water use of olive trees in a six-year-old, deficit irrigated, intensive olive orchard (‘Arbequina’) in one of the driest regions of Southern Portugal. Woody agricultural crops are regularly cultivated with some water stress to maintain an equilibrium between the vegetative and reproductive cycles, to improve production quality and, when irrigated, to save water. To achieve a precise irrigation scheduling it is necessary to quantify water use reducti...
Cited By1
Newest
Published on Jun 12, 2019in Water 2.52
M.R. Cameira11
Estimated H-index: 11
,
Luis S. Pereira51
Estimated H-index: 51
The main challenge faced by agriculture is to produce enough food for a continued increase in population, however in the context of ever-growing competition for water and land, climate change, droughts and anthropic water scarcity, and less-participatory water governance. Such a context implies innovative issues in agricultural water management and practices, at both the field and the system or the basin scales, mainly in irrigation to cope with water scarcity, environmental friendliness, and ru...