"In 1984, Oregon State University's Department of Agricultural
and Resource Economics was again asked to make a winegrape acreage
survey in Oregon. Winegrape acreage is currently increasing
dramatically and the Wine Advisory Board (WAB) 1s Interested In
keeping track of these changes.
In 1981 and 1982 the Department made surveys...
Learn the most effective techniques for controlling insects, weeds and disease on wine grapes in Oregon. This comprehensive publication for growers covers strategies for controlling powdery mildew, botrytis bunch rot and spider mites, in addition to resources for organic growers. Easy-to-read tables list pesticide application rates and timing.
This guide is developed for use by managers of commercial vineyards in Oregon. It provides recommendations for chemicals, formulations and usage rates of products that are intended to prevent, manage and control vineyard diseases, insects, mites and weeds. When considering a pesticide, evaluate its efficacy and its impact on beneficial...
In western Oregon the titratable acidity of grapes at
harvest may in some seasons be higher than desirable for
making quality wine, due to the retention of malic acid.
The purposes of this study were 1) to investigate the
effects of a vineyard cultural practice, cluster exposure
at veraison by...
The specific geography of individual wine growing regions has long been understood to be a significant factor in predicting both a region’s success in producing high quality grapes, and the resulting demand for wines produced from that region's fruit. In the American wine industry, American Viticultural Areas (AVAs) are increasingly...
Vineyard design and management methods that create vine balance will help sustain productive yields, achieve desired fruit quality and maintain vine health. Different climates across Oregon will affect strategies for achieving vine balance, but the basic approach is the same everywhere.
Wine volatile composition is one of the most important constitutes of wine quality, and it is greatly influenced by number of factors. The studies herein were conducted to evaluate the grape and wine aroma affected by different vine nutrient status, vigor and crop levels of Oregon Pinot noir.
In the...
Grafting, which involves combining two different varieties or species to form a plant with new characteristics, is a technique known from ancient times in tree fruit and grape production. It was, however, used in viticulture only for certain special cases: to change variety, increase vigor, or increase limestone tolerance.
It is estimated that 50-75% of Oregon vineyards cultivate at least every other alley in order to 1) reduce water stress 2) increase vineyard canopy temperatures and 3) increase nutrient availability. Because many vineyards are situated on steep hillsides, frequent tillage could result in increased soil erosion, decreased soil quality...