Calibrating the compensation heat-pulse technique for measuring sap flow in olive.

摘要

The compensation heat-pulse method, a technique for measuring sap flow in plants, was calibrated for olive trees. Two calibration experiments were carried out, the excision and the perfusion experiments. A device was designed for the perfusion experiment, which allowed the technique to be calibrated for a range of 0.5-14 litres h-1. The correction factors given by Green and Clothier for a 2.0-mm-diameter wound were valid for olive trees, except when the tree suffered from significant water stress.