Non-destructive measurement of grapevine water potential using near infrared spectroscopy
R De Bei, D Cozzolino, W Sullivan, W Cynkar, S Fuentes, R Dambergs, J Pech, S Tyerman
AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH | WILEY | Published : 2011
Background and Aims: Near infrared (NIR) spectroscopy techniques are not only used for a variety of physical and chemical analyses in the food industry, but also in remote sensing studies as tools to predict plant water status. In this study, NIR spectroscopy was evaluated as a method to estimate water potential of grapevines. Methods and Results: Cabernet Sauvignon, Chardonnay and Shiraz leaves were scanned using an Integrated Spectronic (300-1100nm) or an ASD FieldSpec® 3 (Analytical Spectral Devices, Boulder, Colorado, USA) (350-1850nm) spectrophotometer and then measured to obtain midday leaf water potential using a pressure chamber. On the same shoot, the leaf adjacent the one used for ..View full abstract
This project is supported by Australia's grape growers and wine-makers through their investment body the Grape and Wine Research and Development Corporation, with matching funds from the Australian government.The work of Roberta De Bei during the season 2006-07 was part of the research activities of the 'Dottorato in Viticoltura, Enologia and Marketing delle Imprese Vitivinicole' supported by the Provincia di Treviso and partially supported by the Fondazione 'Ing. Aldo Gini', Italy.