Rapid and non-destructive water stress evaluation of grapevine leaves by vis/NIR and NIR spectroscopy: a preliminary study

The increasing water shortages and irrigation costs are leading to develop new tools to better manage irrigation monitoring and scheduling for an high water use efficiency. Therefore, the demand for rapid, cost-effective and non-invasive measurement of grapevine water status is a challenge for the winemaking sector. This preliminary work studied the applicability of vis/NIR (400-1000 nm) and NIR (1000-2000 nm) spectroscopy as rapid techniques for the leaf water status monitoring directly in field using two portable optical devices.