- Pinot noir and Chardonnay are the two main winegrape varieties in Oregon. In 1997, they comprised approximately 58% of the Oregon winegrape acreage, and 60% of the total production for a value of $14,171,000 (66% of total) (1). Internationally, clonal selection of Pinot noir and Chardonnay have made available, for each variety, an array of clones with wide ranging levels of productivity and fruit quality. In the Champagne region, clones were selected for increased yields; in Burgundy, the main criterion was high fruit quality; and in Switzerland, the Pinot noir clone Mariafeld was selected for disease resistance. In the U.S., clones selected here and elsewhere continue to be evaluated for their suitability to local growing conditions. The Pinot noir clones included in the trial at Woodhall III Vineyard (Table 1) include representatives of diverse types loosely classified into four groups: 1) Pinot fm, typically characterized by having small clusters and prostrate growth habit; 2) Mariafeld, most noted for having loose clusters; 3) Upright, known for their erect growth habit; and 4) Fertile, typically having large clusters and prostrate growth habit (2). The Chardonnay clones at Woodhall III Vineyard (Table 2), although not as numerous as clones in the Pinot noir trial, also represent a range of types with different levels of productivity and fruit quality.