Recent studies have shown that dipping table grapes in ethanol solutions at harvest improved storage of the fruit. We report here the first results obtained by treating 'Chasselas' table grapes (Vitis vinifera) with ethanol vapours over the storage period. We tested the effect of ethanol at 0, 4 and 8 g/kg fruit during cold storage for 2, 4 and 6 weeks. We measured berry shatter, stem browning, Botrytis rot incidence and sensory appreciation by tasting panels. Ethanol vapours reduced Botrytis rot incidence and berry shatter, but hastened stem browning. Sensory analyses did not detect any differences between treatments.
Phytophthora multivora was detected from several soil samples collected from the rhizospheres of diebackaffected plants between 2009 and 2014 in the Melbourne Gardens, Royal Botanic Gardens Victoria and the Melbourne Museum, both located in inner city Melbourne, Victoria.
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