In 1982, Oregon State University Extension Service was again asked to make a winegrape acreage survey in Oregon. Winegrape acreage is currently increasing dramatically and the Table Wine Research Advisory Board (TWRAB) is interested in keeping track of these changes.
In 1981 Extension made a survey of acreages by county...
The objectives of this study are to determine:
· How vine vigor and fruit composition vary in different alleyway management regimes: solid vegetative cover vs. every other alleyway of vegetative cover removed
· What differences are observed in different alleyway management regimes within a vineyard
· What differences are observed...
Published September 1989. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Two experiments were conducted on wine grapes 'Chardonnay' and
'Gewurtztraminer' (Vitis vinifera L.) in 1986 and 1987 to
investigate the performance of grapes in competition with perennial
ryegrass (Lolium perenne L.) 'Manhattan 11' sod, the competition
between sod and grapes for nutrients and moisture and the effects
of nitrogen fertilization...
It’s that time of year when many of you are out and about scouting for the earliest signs of powdery mildew and implementing your vineyard spray programs throughout the state. Here’s a quick status update for powdery mildew forecasting and management.
Welcome to the September 2010 edition of OSU Vineyard Notes. We take this opportunity to make you aware of pest-related problems in the vineyard. This 2010 season has been a challenge for many, and the challenges do not stop here. Jay Pscheidt, OSU Extension Plant Pathology Specialist, reports on new...
This issue of Vineyard Notes covers four timely topics to be considered in your véraison vineyard management plans:
+ Bird control
+ Powdery mildew management
+ Late season Botrytis prevention
+ Tissue nutrient sampling
Oregon State University researchers are expanding their study of mineral nutrition in winegrapes as part of a project sponsored by the Wine Advisory Board. Further research is justified because of increasing grower interest in nutritional factors that affect production and quality. Winegrape growers utilize Oregon State University's Plant Analysis Laboratory...
During the last two years thrips have been suspected of causing shoot damage in the form of reduced leaf size and stunted vine growth in one vineyard in the Cave Junction area of Southern Oregon. While there can be several problems that can cause this symptom in grapes, it was...
Black raspberry (Rubus occidentalis L.) is a high-value crop in the Pacific Northwest of North America with an international marketplace. Few genetic resources are readily available and little improvement has been achieved through breeding efforts to address production challenges involved in growing this crop. Contributing to its lack of improvement...