Abstract
The objectives of this investigation were to employ predictive models of wine style based upon grape berry sugar accumulation profiles, or berry skin colour, to create a harvest decision framework. Specific wine styles (Fresh, Intermediate & Mature) were predicted for Shiraz and Cabernet Sauvignon cultivars based upon a specified number of days following cessation of sugar accumulation in the grape berry. Compositional measure of grapes, wine and wine sensory scores could be used to consistently predict the specified wine styles from the plateau of sugar accumulation irrespective of vineyard location, altitude or vine yield. Industry partners in the Barossa Valley undertook field based trials incorporating irrigation scheduling with the sugar accumulation models for harvest decision making. For the white cultivars Chardonnay and Sauvignon Blanc, grape berry skin colour measures of hue and tint angle determined using a Dyostem™ instrument was used to optimise harvest decisions for specific wine styles.
| Original language | English |
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| Place of Publication | Wagga Wagga, NSW |
| Publisher | Charles Sturt University |
| Commissioning body | Australian Grape and Wine Authority trading as Wine Australia |
| Number of pages | 212 |
| Publication status | Published - 2017 |