ResumenEl manejo del agua en plantaciones frutícolas, o arbóreas, requiere un profundo1 conocimie... more ResumenEl manejo del agua en plantaciones frutícolas, o arbóreas, requiere un profundo1 conocimiento de la respuesta del árbol a diferentes situaciones de estrés hídrico, y de comor í '"', ;las posibles técnicas de aplicación de agua de riego y las condiciones del medio(principalmente suelo y agua) donde se encuentra ubicada la plantación, pueden condicionarla disponibilidad de agua para la planta..Con la finalidad de profundizar y ampliar este tipo de conocimientos se ha desarrollado el" *' presente trabajo. Para1 su realización se han elegido tres especies (melocotón, avellano ynogal), y tres temáticas relacionadas con el agua: sensibilidad estacional al déficit hídrico (yen consecuencia la aplicación de estrategias de riego deficitario controlado (RDC)),ecofisiología de las relaciones hídricas e intercambio de gases y calidad del agua de riego.Con ello se pretende abarcar varios aspectos de la respuesta de los árboles frente a posiblesestreses hídricos.Los r...
Journal of the American Oil Chemists' Society, 2001
Page 1. ABSTRACT: The effect of a linear (vs. effective crop coefficient, Kc ), irrigation strate... more Page 1. ABSTRACT: The effect of a linear (vs. effective crop coefficient, Kc ), irrigation strategy applied to young olive trees (Arbequina cv.) on the qualitative and quantitative parameters of virgin olive oil quality was studied. ... c ): ETc = ETo × Kc [1] ...
... de las plantas, Rendimiento de cultivos, Experimentación en campo, España. Language, Es. Note... more ... de las plantas, Rendimiento de cultivos, Experimentación en campo, España. Language, Es. Notes, Sumario (Es), Ilus., 1 tabla, 4 gráf. Spanish Abstract, Los resultados correspondientes a tres años de estudio de diversos factores relacionados con el balance de nitrógeno (N) en ...
Accounting for water use in agricultural fields is of vital importance for the future prospects f... more Accounting for water use in agricultural fields is of vital importance for the future prospects for enhancing water use efficiency. Remote sensing techniques, based on modelling surface energy fluxes, such as the two-source energy balance (TSEB), were used to estimate actual evapotranspiration (ETa) on the basis of shortwave and thermal data. The lack of high temporal and spatial resolution of satellite thermal infrared (TIR) missions has led to new approaches to obtain higher spatial resolution images with a high revisit time. These new approaches take advantage of the high spatial resolution of Sentinel-2 (10–20 m), and the high revisit time of Sentinel-3 (daily). The use of the TSEB model with sharpened temperature (TSEBS2+S3) has recently been applied and validated in several study sites. However, none of these studies has applied it in heterogeneous row crops under different water status conditions within the same orchard. This study assessed the TSEBS2+S3 modelling approach to...
Deficit irrigation (DI) applied during Stage II of fruit development has the potential of improvi... more Deficit irrigation (DI) applied during Stage II of fruit development has the potential of improving fruit quality in peach (Prunus persica). Existing information only covers instrumental assessment of quality. No report is available on how sensory attributes and consumer acceptance are affected. We applied DI at Stage II to ‘Tardibelle’ peach and evaluated fruit composition, sensory attributes, and consumer acceptance during the growing seasons of 2009 and 2010. Results were compared with those from trees that received conventional irrigation (CI). Stem water potential in DI trees was indicative of a moderate water stress during Stage II. In 2010, water stress persisted at the beginning of Stage III and average fruit weight was reduced in DI trees. A panel of trained judges decided that DI increased sweetness, juiciness, and the intensity of peach flavor but it reduced fruit firmness and crispness. A panel of consumers indicated increased preference for DI fruit. The higher appeal f...
The Journal of Horticultural Science and Biotechnology, 2009
... sweet cherry (cv. New Star) fruit firmness and quality. Authors Marsal, J.; Lopez, G.; Arbone... more ... sweet cherry (cv. New Star) fruit firmness and quality. Authors Marsal, J.; Lopez, G.; Arbones, A.; Mata, M.; Vallverdu, X.; Girona, J. Journal Journal of Horticultural Science and Biotechnology 2009 Vol. 84 No. 3 pp. 273-278 ISSN ...
ABSTRACT Accurate prediction of crop coefficient (K c) is necessary for proper irrigation managem... more ABSTRACT Accurate prediction of crop coefficient (K c) is necessary for proper irrigation management. We explored CropSyst for determining irrigation requirements of apple trees and for accuracy of K c prediction. Values of K c were compared to those obtained, over 2002–2010, from lysimeter-grown trees. Over these years, trees had different ratios of height (H) to width (W). CropSyst predicted irrigation requirements using tree light interception and water uptake sub-model components. Parameters of the model were adjusted using data obtained from the lysimeter in 2010. Tree light interception sub-model was verified by 2007 data. After parameterization, good agreement was found between simulated and measured K c over different seasons. The porosity coefficient of the canopy was related to changes in tree’s H/W ratio and leaf overlapping. Accordingly, different porosity values could be estimated for each year. When yearly changes in canopy porosity was considered, CropSyst improved K c prediction and generated relevant information for managing irrigation under changing canopy shape for apple trees.
ResumenEl manejo del agua en plantaciones frutícolas, o arbóreas, requiere un profundo1 conocimie... more ResumenEl manejo del agua en plantaciones frutícolas, o arbóreas, requiere un profundo1 conocimiento de la respuesta del árbol a diferentes situaciones de estrés hídrico, y de comor í '"', ;las posibles técnicas de aplicación de agua de riego y las condiciones del medio(principalmente suelo y agua) donde se encuentra ubicada la plantación, pueden condicionarla disponibilidad de agua para la planta..Con la finalidad de profundizar y ampliar este tipo de conocimientos se ha desarrollado el" *' presente trabajo. Para1 su realización se han elegido tres especies (melocotón, avellano ynogal), y tres temáticas relacionadas con el agua: sensibilidad estacional al déficit hídrico (yen consecuencia la aplicación de estrategias de riego deficitario controlado (RDC)),ecofisiología de las relaciones hídricas e intercambio de gases y calidad del agua de riego.Con ello se pretende abarcar varios aspectos de la respuesta de los árboles frente a posiblesestreses hídricos.Los r...
Journal of the American Oil Chemists' Society, 2001
Page 1. ABSTRACT: The effect of a linear (vs. effective crop coefficient, Kc ), irrigation strate... more Page 1. ABSTRACT: The effect of a linear (vs. effective crop coefficient, Kc ), irrigation strategy applied to young olive trees (Arbequina cv.) on the qualitative and quantitative parameters of virgin olive oil quality was studied. ... c ): ETc = ETo × Kc [1] ...
... de las plantas, Rendimiento de cultivos, Experimentación en campo, España. Language, Es. Note... more ... de las plantas, Rendimiento de cultivos, Experimentación en campo, España. Language, Es. Notes, Sumario (Es), Ilus., 1 tabla, 4 gráf. Spanish Abstract, Los resultados correspondientes a tres años de estudio de diversos factores relacionados con el balance de nitrógeno (N) en ...
Accounting for water use in agricultural fields is of vital importance for the future prospects f... more Accounting for water use in agricultural fields is of vital importance for the future prospects for enhancing water use efficiency. Remote sensing techniques, based on modelling surface energy fluxes, such as the two-source energy balance (TSEB), were used to estimate actual evapotranspiration (ETa) on the basis of shortwave and thermal data. The lack of high temporal and spatial resolution of satellite thermal infrared (TIR) missions has led to new approaches to obtain higher spatial resolution images with a high revisit time. These new approaches take advantage of the high spatial resolution of Sentinel-2 (10–20 m), and the high revisit time of Sentinel-3 (daily). The use of the TSEB model with sharpened temperature (TSEBS2+S3) has recently been applied and validated in several study sites. However, none of these studies has applied it in heterogeneous row crops under different water status conditions within the same orchard. This study assessed the TSEBS2+S3 modelling approach to...
Deficit irrigation (DI) applied during Stage II of fruit development has the potential of improvi... more Deficit irrigation (DI) applied during Stage II of fruit development has the potential of improving fruit quality in peach (Prunus persica). Existing information only covers instrumental assessment of quality. No report is available on how sensory attributes and consumer acceptance are affected. We applied DI at Stage II to ‘Tardibelle’ peach and evaluated fruit composition, sensory attributes, and consumer acceptance during the growing seasons of 2009 and 2010. Results were compared with those from trees that received conventional irrigation (CI). Stem water potential in DI trees was indicative of a moderate water stress during Stage II. In 2010, water stress persisted at the beginning of Stage III and average fruit weight was reduced in DI trees. A panel of trained judges decided that DI increased sweetness, juiciness, and the intensity of peach flavor but it reduced fruit firmness and crispness. A panel of consumers indicated increased preference for DI fruit. The higher appeal f...
The Journal of Horticultural Science and Biotechnology, 2009
... sweet cherry (cv. New Star) fruit firmness and quality. Authors Marsal, J.; Lopez, G.; Arbone... more ... sweet cherry (cv. New Star) fruit firmness and quality. Authors Marsal, J.; Lopez, G.; Arbones, A.; Mata, M.; Vallverdu, X.; Girona, J. Journal Journal of Horticultural Science and Biotechnology 2009 Vol. 84 No. 3 pp. 273-278 ISSN ...
ABSTRACT Accurate prediction of crop coefficient (K c) is necessary for proper irrigation managem... more ABSTRACT Accurate prediction of crop coefficient (K c) is necessary for proper irrigation management. We explored CropSyst for determining irrigation requirements of apple trees and for accuracy of K c prediction. Values of K c were compared to those obtained, over 2002–2010, from lysimeter-grown trees. Over these years, trees had different ratios of height (H) to width (W). CropSyst predicted irrigation requirements using tree light interception and water uptake sub-model components. Parameters of the model were adjusted using data obtained from the lysimeter in 2010. Tree light interception sub-model was verified by 2007 data. After parameterization, good agreement was found between simulated and measured K c over different seasons. The porosity coefficient of the canopy was related to changes in tree’s H/W ratio and leaf overlapping. Accordingly, different porosity values could be estimated for each year. When yearly changes in canopy porosity was considered, CropSyst improved K c prediction and generated relevant information for managing irrigation under changing canopy shape for apple trees.
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Papers by Joan Girona