Five replicated rootstock trials established in Oregon's three main viticultural. regions were evaluated for the effect of rootstock on Pinot noir performance. All the trials except Alpine included the following seven rootstocks: ungrafted Pinot noir, 3309 Couderc, 101-14 Millardet et De Grasset, 44-53 Mal6gue, 420 A Millardet et De Grasset,...
Five replicated rootstock trials established in Oregon's three main viticultural regions were evaluated for the effect of rootstock on Pinot noir performance. All the trials except Alpine included the following seven rootstocks: ungrafted Pinot noir, 3309 Couderc, 101-14 Millardet et De Grasset, 44-53 Malegue, 420 A Millardet et De Grasset,...
The advent of phylloxera in Oregon led to an urgent need for the evaluation of the viticultural characteristics of rootstocks with the potential for adaptation to Oregon, a cool climate grape production zone with low pH soils. The research reported here is a long-term study on the effect of rootstock...
Extensive information on rootstock resistance to lime is available since it has been one of the major selection criteria in Europe an rootstock breeding programs. Information regarding the performance of rootstocks in acidic soils however, is not so prevalent. Differences in genotype tolerance to high acidity maybe related to different...
The wine grape industry is rapidly growing in Oregon. By the year 2005, we could predict that Oregon will have over 10,000 acres in wine grape production. At a meeting last year, the Grapevine Improvement Committee acknowledged that little was known about the presence of potential pest and beneficial insects...
In 1994-95, the Oregon Wine Advisory Board supported a cooperative study entitled "Crown gall and phylloxera in Oregon grape vines: Biology and treatment of planting stock with hot water dips" with Bernadine Strik and Marilyn Canfield (Larry Moore) as co-principal investigators. We will report our findings on hot water dips...
Inflorescence Necrosis (IN) has been an unpredictable problem for grape growers in Oregon. The
industry has seen significant losses due to this fruit set disorder in several out of the eight years since its
first description in 1988, particularly in Pinot noir. Little is known of how to prevent the...
Poor set and low yields in 1988 and 1990 were, in part, attributed to Inflorescence Necrosis (IN), a disorder that results in death of flowers and rachis tissue near bloom-time. In isolated areas, IN has caused significant loss of crop in each year since then. Past research at OSU has...
The easiest way to introduce phylloxera to a site is by infested plant material. If a grower can effectively remove any existing phylloxera on new plants, the rate of spread of phylloxera. in Oregon vineyards will be significantly decreased.
The objectives of this study are to determine methods for dipping...
The introduction and evaluation of new planting material for the Oregon wine industry has been one of the top priorities of OSU and Oregon Wine Advisory Board (OWAB) for many years. The emphasis at OSU has been on two main objectives: to facilitate the introduction of new material into commercial...