Abstract
In a study conducted for two seasons in a vineyard of the University of California at Davis, ethephon (2-chloroethylphosphonic acid) was applied at véraison to Zinfandel vines maintained under three regimes of water supply, viz., maximally stressed, moderately stressed and minimally stressed. There were significant interactions between the responses to ethephon and vine water regime on fruit development and composition.
In general, the data demonstrate that water stress retarded the accumulation of soluble solids and berry size while ethephon caused enhancement. Differences in fruit composition and size at harvest are considered the product of these opposing influences.
- Received October 1980.
- Revision received January 1981.
- Accepted January 1981.
- Published online January 1981
- Copyright 1981 by the American Society for Enology and Viticulture
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Vol 32 Issue 2
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