ApeX-Vigne: experiences in monitoring vine water status from within-field to regional scales using crowdsourcing data from a free mobile phone application

Monitoring vine water status is a major issue for vineyard management because constraints impact both the quality and quantity of harvest. Existing methods are often costly complex to implement. ApeX-Vigne free mobile application developed facilitate collection geolocation 50 apex observations characterise shoot growth classify it into 3 categories. The also provides user with simple estimate based on growth. This paper presents results obtained over two seasons (2019 2020) after launch Apex-Vigne its use large wine producing region in south France. An existing method was adapted evaluating interest number installations uninstallations. showed that had more than 1200 downloads 6000 made 2020 season. Examples from commercially collected data can be used as tool characterizing stress at within-field inter-field scales. Finally, demonstrated by enabling massive centralized spatial field scale growth, able structure regional scale. Access this new source information offers opportunities resources well site- vineyard-specific management. These raised research questions joint other sources high resolution information.