We are currently in the middle of the data acquisition season at Domaine du Chapitre. Different indicators are measured on the plots by Yulin Zhang, Cécile Peruzzaro and Pauline Faure within the framework of the DATI research project which aims to find irrigation management solutions accessible to most farmers.
During the vegetative phase of the vine, it is mainly a question of measuring the predawn leaf water potential using a pressure chamber and the growth index of the apexes using the mobile application ApeX Vigne. These two indicators are related to the hydric stress of the vine. The objective of these measurements is to find links between the apex growth index (an empiric indicator) and the predawn potential (a proven indicator). This approach is interesting because the acquisition from a smartphone increases the access to water stress indicators compared to pressure chamber monitoring.