Abstract
The grape varieties `Chardonnay', `White Riesling', `Chenin blanc', `Semillon', `Seibel 10868', `Cabernet Sauvignon', `Pinot noir', `Gamay Beaujolais', `Meunier', and `Foch' were planted in 1965 at Prosser for production and winemaking studies. The climate, defined in terms of heat units for the growing season (April-October) 1967 through 1970, averaged 2437 degree-days. The average frost-free period was 170 days, and the lowest temperature in these years was -ll°F. All varieties had good to very good yields, with favorable levels of sugar and acid. Four varieties averaged high in total acidity. Most unprotected varieties sustained some bud injury from low 1968-69 winter temperatures, but yields in 1969 were normal.
- Accepted January 1972.
- Published online January 1972
- Copyright 1972 by the American Society for Enology and Viticulture
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