SILVER-FOIL PSYCHROMETER FOR MEASURING LEAF WATER POTENTIAL

摘要

An miniature apparatus for measuring the water potential of leaves in situ without temperature control. The apparatus includes a metal disk with a central cavity, a pair of thermally conductive washers mounted on the bottom of the disk, a reference thermocouple connected to each washer, and a measuring thermocouple located in the cavity. The thermocouples are connected in series.