(TheAustralian) - AUSTRALIAN winemakers can trick their grapes into maturing later in a bid to counteract the effects of climate change, research shows. Over the past 25 years, the harvest date for Australian wines has come forward almost one day a year, agricultural scientist Professor Snow Barlow says. Pruning grapevines a month later is one of the tactics being employed by a major Australian winemaker to delay the growth of grapes, so they mature when they did before the seasons started to change.