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Creator:: Pinkerton, Jack, Candolfi-Vasconcelos, M. Carmo, and Ingham, Russell E.
Abstract:: Plant-pathogenic nematodes that cause yield loss in California and European vineyards are found in over 85 % of Oregon vineyards. Population densities of Xiphinema americanun (dagger nematode) and Criconemella xenoplax (ring nematode) were found in 37% of vineyards at levels reported to cause > 10-25% loss in California vineyards. However,...
Resource Type:: Technical Report
Full Text:: Botany and Plant Pathology Oregon State University BACKGROUND AND PROBLEM Plant-pathogenic

Creator:: Miller, Marilyn L., Moore, Larry W., Mentzer, Jessica, Dierenfield, Lora, Ferguson, Kathleen, Candolfi-Vasconcelos, M. Carmo, and Castagnoli, Steve
Abstract:: Agrobacterium vitis is a bacterium that causes crown gall in grapevines. Plant injury from freezing temperatures or mechanical damage during cultivation often provide wounds required for infection to occur. Crown gall may kill grapevines and a new shoot is often brought up from the root to replace dead vines. Discovery...
Resource Type:: Technical Report
Full Text:: Candolfi-Vascancelos, Steve Castagnoli, Horticulture Department Oregon State University, Corvallis, Oregon

Creator:: Strik, Bernadine C., Connelly, Anne, Fisher, Glenn, and Granett, Jeffrey
Abstract:: Since phylloxera's discovery in a commercial vineyard in August of 1990, nine infestations have been verified in Oregon. With over 95% of Oregon's vineyards planted with ownrooted, Vitis vinifera, non-resistant vines, understanding the insect's biology under our conditions has become important for determining management strategies that minimize rate of spread....
Resource Type:: Technical Report
Full Text:: . Strik, Anne Connelly, and Paula Stonerod Department of Horticulture Oregon State University

Creator:: DeFrancesco, Joseph T., Pscheidt, Jay W., Yang, Wei Qiang, and Oregon State University. Extension Service
Abstract:: Recommends pest management practices for blueberry. Published 2018. 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
Resource Type:: Technical Report
Full Text:: . Oregon State University Extension Service · 2018 Blueberry Pest Management Guide for the Willamette

Creator:: Sugar, David and Hilton, Richard
Abstract:: The immediate objective of this project is to establish a vineyard at the Southern Oregon Experiment Station in which previously untested wine grape cultivars will be evaluated. The ultimate goal is to characterize the production and wine qualitypotential of these cultivars in southern Oregon.
Resource Type:: Technical Report
Full Text:: Professor Richard Hilton, Research Assistant Oregon State University Southern Oregon Experiment

Creator:: Sugar, David and Hilton, Richard
Abstract:: Climatic conditions in southern Oregon are unique among the wine-growing regions of the Pacific Northwest. Previous experience has shown that one strength of this region lies in the production of warm-climate cultivars which may not mature properly in other regions of Oregon. The current selection of such cultivars with known...
Resource Type:: Technical Report
Full Text:: ; Richard Hilton, Research Assistant, Oregon State University, Southern Oregon Experiment Station, Medford

Creator:: Pinkerton, Jack, Candolfi-Vasconcelos, M. Carmo, and Ingham, Russell
Abstract:: Survey data compiled in 1995 showed that plant-pathogenic nematodes that cause yield loss in California and European vineyards are found in over 85% of Oregon vineyards. In over 37% of the samples collected, population densities of Xiphinema wnericanwn (dagger nematode) and Criconenw1la xenoplax (ring nematode) were greater than levels known...
Resource Type:: Technical Report
Full Text:: Botany and Plant Pathology Oregon State University Background and Problem Survey data compiled in

Creator:: Viguers, Leslie and Fisher, J. R.
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: Leslie Viguers and J. R. Fisher Department of Entomology, Oregon State University USDA/ARS

Creator:: Pscheidt, Jay W., Wittig, H. P. P., and Candolfi-Vasconcelos, M. Carmo
Abstract:: Three forecasting programs for scheduling fungicide applications were selected for comparison with the standard Oregon phenology based program. The UCDavis (California) program used leaf wetness and temperature early in the year and only temperature during the summer. The New York program was based on rainfall and temperature. The German Oi...
Resource Type:: Technical Report
Full Text:: and Plant Pathology Oregon State University Three forecasting programs for scheduling fungicide

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