WATER RELATIONS IN HAZELNUT: SAP FLOW, PREDAWN WATER POTENTIAL AND MICROMORPHOMETRIC VARIATIONS OF STEM DIAMETER
In this paper, we describe a method recently developed for measuring sap flow in the stem of tree which evaluates water consumption in fruit trees more acurately than with climatic approaches. It can be used under unlimited or limited water supply conditions. Two other plant water stress indicators (diurnal stem contractions and predawn water potential) are also tested for irrigation scheduling.
We present here the first results obtained in hazelnut experiments.