ISHS Acta Horticulturae 474: III International Symposium on Olive Growing
CALIBRATING THE COMPENSATION HEAT-PULSE TECHNIQUE FOR MEASURING SAP FLOW IN OLIVE |
| Authors: | J.E. Fernández, M.J. Palomo, A. Díaz-Espejo, I.F. Girón |
| Keywords: | Olea europaea, sap flow, transpiration, calibration, heat pulse |
| Abstract:
The compensation heat-pulse method, a technique for measuring sap flow in plants, was calibrated for the olive tree. Two calibration experiments were carried out, the excision and the perfusion experiments. A device was designed in our laboratory for the perfusion experiment, which allowed us to calibrate the technique for a range of 0.5 L h-1 to 14 L h-1. The correction factors given by Green and Clothier (1988) for a 2.0 mm wound diameter were found to be valid for the olive tree, except when the tree suffered from significant water stress. | |
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