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Qualities of wine grapes can vary across a vineyard, creating opportunities either to exploit those variations to create different wine styles, or to apply precision viticultural techniques to optimise inputs. Visible/near infrared spectroscopy (VNIRS) has been shown to be useful in evaluation of grape quality parameters. Therefore, our aim is to use VNIRS to evaluate grape quality on the discharge conveyor of a grape harvester, in the short term providing information about spatial distribution of crop quality, and in the long term facilitating improved viticultural practices.