Abstract
Use of ethephon was investigated as a means of improving color of Pinot noir grapes grown in central Washington. In the 1977 and 1978 growing seasons 500 ppm ethephon applied at véraison produced fruit 5 and 18% greater in color than controls. In 1978 ethephon increased must color by 14%. Wine (1977) from 500 ppm ethephon fruit was 60% greater in color after 15 months' bottle aging. Total color of 1978 wines six months old was increased 29 and 47%, respectively, with 250 and 500 ppm treatments. The latter was judged significantly better than other treatments by a taste panel.
- Received October 1979.
- Revision received March 1980.
- Accepted March 1980.
- Published online January 1980
- Copyright 1980 by the American Society for Enology and Viticulture
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