Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions
There is scarce knowledge on what are the actual water requirements of persimmon trees (Diospyros kaki). Research on this topic is required to better adjust irrigation water supplies to the actual crop water needs. This study aimed to determine the transpiration coefficients (Kp) of persimmon ‘Rojo...
| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2022
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.11939/8302 https://www.sciencedirect.com/science/article/abs/pii/S0378377422003511?via%3Dihub |
| _version_ | 1855032766228332544 |
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| author | Ballester, Carlos Badal, Eduardo Bonet, Luis Testi, Luca Intrigliolo, Diego S. |
| author_browse | Badal, Eduardo Ballester, Carlos Bonet, Luis Intrigliolo, Diego S. Testi, Luca |
| author_facet | Ballester, Carlos Badal, Eduardo Bonet, Luis Testi, Luca Intrigliolo, Diego S. |
| author_sort | Ballester, Carlos |
| collection | ReDivia |
| description | There is scarce knowledge on what are the actual water requirements of persimmon trees (Diospyros kaki). Research on this topic is required to better adjust irrigation water supplies to the actual crop water needs. This study aimed to determine the transpiration coefficients (Kp) of persimmon ‘Rojo Brillante’ trees and assess how transpiration and Kp are influenced by environmental factors and the atmospheric demand under Mediterranean climatic conditions. This was done over the course of three growing seasons by means of sap flow measurements calibrated with whole canopy gas exchange chambers. Irrigation was applied aiming to avoid water limiting conditions for trees. This was verified by monitoring the trees’ water status across the growing seasons. Sap flow measurements were linearly and highly correlated (p < 0.001) with canopy transpiration (Ep) obtained with the whole canopy chambers, but either overestimated or underestimated it. Ep increased from April until June-July in response to canopy development and increased midday canopy light interception. There was a positive linear relationship between daily Ep, reference evapotranspiration (ETo) and solar radiation. However, a non-linear relationship was obtained between Ep and vapor pressure deficit (VPD). A positive non-linear relationship (p < 0.01) was observed between Kp (Ep / ETo in non-limited water conditions) and VPD, illustrating the low stomatal regulation that persimmon trees exhibit in response to air dryness. Kp varied over the growing seasons following the ETo pattern although showing comparatively a slighter decrease during the last part of the growing season. From June to September, Kp of persimmon ‘Rojo Brillante’ trees with a midday photosynthetically active radiation (PAR) intercepted of ~30 % ranged from 0.45 to 0.56. A strong relationship was obtained between Kp and percentage of midday intercepted PAR that can be used to estimate Kp of persimmon ‘Rojo Brillante’ trees with a range of ground canopy covers. This information is useful for deriving specific water use models for persimmon trees to be implemented in decision support systems. The monthly transpiration coefficients here provided will be useful for optimizing irrigation scheduling decisions in persimmon orchards and therefore irrigation water management. |
| format | article |
| id | ReDivia8302 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | ReDivia83022025-04-25T14:48:53Z Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions Ballester, Carlos Badal, Eduardo Bonet, Luis Testi, Luca Intrigliolo, Diego S. Transpiration coefficients Mediterranean conditions Rojo brillante Photosynthetically active radiation Canopy transpiration F60 Plant physiology and biochemistry F06 Irrigation F40 Plant ecology F61 Plant physiology - Nutrition P10 Water resources and management Diospyros kaki Water requirements Water supply Transpiration Photosynthesis Sap flow Canopy Irrigation scheduling There is scarce knowledge on what are the actual water requirements of persimmon trees (Diospyros kaki). Research on this topic is required to better adjust irrigation water supplies to the actual crop water needs. This study aimed to determine the transpiration coefficients (Kp) of persimmon ‘Rojo Brillante’ trees and assess how transpiration and Kp are influenced by environmental factors and the atmospheric demand under Mediterranean climatic conditions. This was done over the course of three growing seasons by means of sap flow measurements calibrated with whole canopy gas exchange chambers. Irrigation was applied aiming to avoid water limiting conditions for trees. This was verified by monitoring the trees’ water status across the growing seasons. Sap flow measurements were linearly and highly correlated (p < 0.001) with canopy transpiration (Ep) obtained with the whole canopy chambers, but either overestimated or underestimated it. Ep increased from April until June-July in response to canopy development and increased midday canopy light interception. There was a positive linear relationship between daily Ep, reference evapotranspiration (ETo) and solar radiation. However, a non-linear relationship was obtained between Ep and vapor pressure deficit (VPD). A positive non-linear relationship (p < 0.01) was observed between Kp (Ep / ETo in non-limited water conditions) and VPD, illustrating the low stomatal regulation that persimmon trees exhibit in response to air dryness. Kp varied over the growing seasons following the ETo pattern although showing comparatively a slighter decrease during the last part of the growing season. From June to September, Kp of persimmon ‘Rojo Brillante’ trees with a midday photosynthetically active radiation (PAR) intercepted of ~30 % ranged from 0.45 to 0.56. A strong relationship was obtained between Kp and percentage of midday intercepted PAR that can be used to estimate Kp of persimmon ‘Rojo Brillante’ trees with a range of ground canopy covers. This information is useful for deriving specific water use models for persimmon trees to be implemented in decision support systems. The monthly transpiration coefficients here provided will be useful for optimizing irrigation scheduling decisions in persimmon orchards and therefore irrigation water management. 2022-08-17T16:02:12Z 2022-08-17T16:02:12Z 2022 article acceptedVersion Ballester, C., Badal, E., Bonet, L., Testi, L. & Intrigliolo, D. S. (2022). Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions. Agricultural Water Management, 271, 107804. 0378-3774 http://hdl.handle.net/20.500.11939/8302 10.1016/j.agwat.2022.107804 https://www.sciencedirect.com/science/article/abs/pii/S0378377422003511?via%3Dihub en info:eu-repo/grantAgreement/AEI/Programa Estatal de I+D+i Orientada a los Retos de la Sociedad/RTC-2017- 6365-2//Sistema experto para el diseño y control de un sistema de riego a presión, personalizado y de precisión/PRECIRIEGO This research was funded by the Valencian Institute of Agricultural Research (IVIA), Spain, and “Denominación de origen Kaki Ribera del Xuquer”, Spain, via “Proyecto Integral Caqui”. Complementary funds from the project Preciriego grant number RTC-2017-6365-2 funded by AEI-Feder, Spain, are also acknowledged. Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess Elsevier electronico |
| spellingShingle | Transpiration coefficients Mediterranean conditions Rojo brillante Photosynthetically active radiation Canopy transpiration F60 Plant physiology and biochemistry F06 Irrigation F40 Plant ecology F61 Plant physiology - Nutrition P10 Water resources and management Diospyros kaki Water requirements Water supply Transpiration Photosynthesis Sap flow Canopy Irrigation scheduling Ballester, Carlos Badal, Eduardo Bonet, Luis Testi, Luca Intrigliolo, Diego S. Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions |
| title | Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions |
| title_full | Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions |
| title_fullStr | Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions |
| title_full_unstemmed | Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions |
| title_short | Determining transpiration coefficients of ‘Rojo Brillante’ persimmon trees under Mediterranean climatic conditions |
| title_sort | determining transpiration coefficients of rojo brillante persimmon trees under mediterranean climatic conditions |
| topic | Transpiration coefficients Mediterranean conditions Rojo brillante Photosynthetically active radiation Canopy transpiration F60 Plant physiology and biochemistry F06 Irrigation F40 Plant ecology F61 Plant physiology - Nutrition P10 Water resources and management Diospyros kaki Water requirements Water supply Transpiration Photosynthesis Sap flow Canopy Irrigation scheduling |
| url | http://hdl.handle.net/20.500.11939/8302 https://www.sciencedirect.com/science/article/abs/pii/S0378377422003511?via%3Dihub |
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