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| Titre: | Calibration of Thermal Dissipation Probes for Date Palm (Phoenix dactylifera L.) |
| Auteur(s): | Fouzia Alla
Kawtar Jdaini
Hanane M’hamdi
Hamza Mechchate
Mashail N. AlZain
Nurah M. Alzamel
Omar Noman
Jamal Mimouni
Mohammed Aziz Elhoumaizi |
| Issue Date: | 2022 |
| Référence bibliographique: | Horticulture, p. 1-11 |
| Résumé: | The quantification of water flow through the stem is vital for date palm (Phoenix dactylifera
L.) to promote a good water stress management. The thermal dissipation probe (TDP)
method developed by Granier is widely used to evaluate transpiration of forest trees; however,
there are contradictory reports regarding its reliability. Considerable errors in estimated sap flux
density, which might be due to a lack ofspecies‐specific calibrations. The TDP method uses a
mathematical model that is based on an empirical equation to estimate sap flux density, which is
claimed to be applicable to all tree species, independently of wood structure and anatomy. At the
laboratory, we compared the rate of water uptake by cut stems with sap flux estimates derived
from the TDP method to assess the validity of the method.Our calibration results were considerably
different compared to the Granier’s original equation. Moreover, sap flux density was overestimated
by 18.2±0.5% when the original calibration parameters of Granierare employed. However,
using new calibration parameters improved the accuracy of sap flow measurements. Our results
indicated that it is not appropriate to use a general equation for different species. Therefore, previous
estimations of date palm’s water requirement through thermal dissipation probes should be
revised. |
| License: | http://andzoa.ma/fr |
| URI: | http://localhost:8080/dspace/handle/0/3774 |
| Appears in Collections: | Fonds Documentaire
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