The WAB granted me a travel grant of $500 to spend two weeks visiting Helmut Becker at Geisenheim, Germany; Norbert Becker in Freiburg, Germany; Pierre Huglin and Christophe Schneider at Colmar, France; Raymond Bernard and Pierre Dupuy in Dijon, France; and Alain Carbonneau at Bordeaux, France. A full and quite...
This summer Dr. Nelson Shaulis, from Cornell University, was invited to visit Oregon as a consultant and lecturer. His visit was sponsored by the Sokol Foundation, Oregon State University, and the Oregon Wine Advisory Board. Dr. Shaulis visited 21 vineyards with Steve Price and myself in 8 viticulture areas during...
The late winter cold front in early February 1989 brought significant snowfall and low temperatures to all of Oregon viticulture and caused considerable vine damage in the northeastern and in some western valleys of Oregon. The lateness of this winter freeze was unusual since most winter damage in the Pacific...
Introduction of new winegrape varieties and clones of important commercial varieties in Oregon. zEvaluation of vine and grape characteristics of selected varieties. zEvaluation of phylloxera resistant rootstocks.
The 18 winegrape varieties in this trial were in fifth leaf in 1994. Vines were pruned in February to either a Scott Henry (4 arms on a vertical trellis using two fruiting wires 12 inches apart at 30 and 42 inch height) or a guyot (a double arm on a...
Four year old vines of 18 varieties were cane pruned, trained to a Scott Henry, thinned before veraison, and harvested in October and November 1993. Two of the varieties, Chardonnay and Cabernet Sauvignon, were used as standards. Only four varieties were spur pruned to reduce cropping or cluster size: Dolcetto,...
In 1983, Muscat Ottonell and other early muscats had a complete crop loss in Willamette Valley vineyards. At that time, we assumed the loss was from a botrytis blossom rot. Since 1983, much has changed: we've seen the disorder every year (it resulted in major crop losses in 1988 and...
Objectives:
1. Evaluate canopy management options available to Oregon growers including trellising and pruning for their effects on yield and grape composition.
2. Investigate the relationships between vine growth, cluster environment cluster morphology, and grape composition.
3. Develop techniques that improve the capabilities of Oregon winegrape growers to maximize wine...
This year's late spring frost prompted a number of growers to call OSU with questions about the fruitfulness of secondary buds and about management alternatives for frost damaged vines. In response to this concern three experiments were established in Willamette Valley vineyards. At Chateau Benoit Vineyard ten vines of MollerThurgau...