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Managing insects and diseases of Oregon conifers

Creator:: Shaw, David Carl, 1955-, Oester, Paul T., Filip, Gregory M., and Oregon State University. Extension Service
Abstract:: Discusses options for managing major insect pests and diseases of conifers in Oregon forests: bark beetles, wood borers, and ambrosia beetles; defoliators; aphids, adelgids, and scale insects; terminal and branch insects and pitch moths; root diseases; stem decays; foliage diseases; canker diseases and canker-causing rust diseases; and mistletoes. Extensive references...
Resource Type:: Technical Report
Full Text:: Diseases of Oregon Conifers D.C. Shaw, P.T. Oester, and G.M. Filip EM 8980 • June 2009 Archival copy

Needle diseases in Oregon coast range conifers

Creator:: Oregon State University. Extension Service, Kavanagh, Kathleen L., 1955-, Filip, Gregory M., and Rogers, William Reinhold
Abstract:: This publication discusses the environmental requirements of needle diseases, their potential impact on tree vigor, when disease levels signal a problem, and what you can do to minimize damage.
Resource Type:: Technical Report
Full Text:: ., A. Kanaskie, and A. Campbell 3rd. 1995. Forest Disease Ecology and Management in Oregon, Manual 9

Fungal diversity within decomposing woody conifer roots in Oregon

Creator:: Vandegrift, V. Eleanor
Abstract:: Previous studies have indicated that roots from five tree species (Picea sitchensis, Tsuga heterophylla, Pseudotsuga menziesii, Pinus ponderosa, and Pinus contorta) decompose at different rates across an environmental gradient in Oregon. Measurements of wood chemistry from each tree species as well as moisture and temperature from each location do not...
Resource Type:: Masters Thesis
Full Text:: within Decomposing Woody Conifer Roots in Oregon. I Abstract approved: _t.._S_,,i9'-n.L.,,a

Impact of Armillaria and annosus root diseases on stand and canopy structure, species diversity, and down woody material in a central Oregon mixed-conifer forest

Creator:: Fields, Kristen L. N.
Abstract:: White and grand fir are both valuable components of the mixed-conifer stand structure managed for late-successional reserves in central Oregon. However, they are often short-lived species because of high susceptibility to root diseases, defoliating insects, bark beetles, and wildfire. This study focuses on the effects of root diseases caused by...
Resource Type:: Masters Thesis
Full Text:: a Central Oregon Mixed-Conifer Forest Abstract approved: Gregory M. Filip White and grand fir are

Leaf-feeding sawflies in wheat

Creator:: Oregon State University. Extension Service, Corp, Mary K., and Fisher, Glenn C.
Abstract:: The larvae, or “worms,” of sawflies resemble small, green caterpillars that feed on the leaves of various plants. Although sawflies are rarely an economically important problem in Oregon cereal crops, unusually large populations (300 larvae/10 sweeps) of one species, probably Pachynematus sp., were found in Umatilla County in 2003. The...
Resource Type:: Technical Report
Full Text:: sweeps) was in fine fescue grown for seed in the Willam- ette Valley in 1971 and 1972. This pest was

A new pest attacking healthy ripening fruit in Oregon : spotted wing Drosophila : Drosophila suzukii (Matsumura)

Creator:: Dreves, Amy J., Walton, Vaughn M., Fisher, Glenn C., and Oregon State University. Extension Service
Abstract:: "Infestations of the spotted wing Drosophila fly (Diptera: Drosophilidae), an exotic pest, have been found in Oregon fruits in 13 counties. Of the 3,000 species of Drosophila, commonly known as vinegar flies, approximately 175 are known in North America. Two of these known species have been found to be harmful...
Resource Type:: Technical Report
Full Text:: Pest Attacking Healthy Ripening Fruit in Oregon 1 E M 8 9 9 1 • O c t o b e r 2 0 0 9

Epidemiology of grape powdery mildew, Uncinula necator, in the Willamette Valley

Creator:: Hall, Tyrone W.
Abstract:: An important disease of Vitis vinifera production in Oregon and all other commercial growing regions is powdery mildew of grape, caused by the obligate fungal pathogen Uncinula necator (Schwein.) Burril. Grape production can be characterized as a long-term investment in the establishment and maintenance of the vineyard. Establishment times have...
Resource Type:: Masters Thesis
Full Text:: . Mahaffee An important disease of Vitis vinifera production in Oregon and all other commercial growing

Hop cone tip blight : a new disease in the Pacific Northwest

Creator:: Bienapfl, John C.
Abstract:: A necrosis at the tip of cones was observed on hop (Humulus lupulus), cultivar "Nugget", grown in Oregon in the early 1990's. Fusarium sambucinum and F. avenaceum were recovered from symptomatic cones in 1998 and preliminary inoculation experiments suggested both Fusarium species could cause hop cone necrosis. Studies were carried...
Resource Type:: Masters Thesis
Full Text:: assistance with setting up, maintaining, and taking down the hop fields. I am grateful to the Oregon Hop

Winter grain mite: a fall and winter pest of cereals and grasses in Oregon

Creator:: Oregon State University. Extension Service, Tuck, Brian V., Bohle, Mylen G., Dreves, A., and Fisher, G.
Abstract:: Winter grain mite, Penthaleus major (Duges), is a small, colorful, cool season mite that damages grass and cereal crops throughout the Pacific Northwest as well as in most other temperate regions of the world. Hosts include most cereals and grasses of economic importance. Winter grain mite has been a frequent...
Resource Type:: Technical Report
Full Text:: A Fall and Winter Pest of Cereals and Grasses in Oregon Figure 1.—Gray-silvery cast to wheat

2019 pest management guide for wine grapes in Oregon

Creator:: Skinkis, Patricia A., Pscheidt, Jay W., Moretti, Marcelo L., Walton, Vaughn M., KC, Achala, Kaiser, Clive, and Oregon State University. Extension Service
Abstract:: This publication reviews the growth stages of grapes. For each growth stage (or group of growth stages), the document lists the more effective pesticides used to control insects, weeds, and disease; their rates; and application timing for Oregon grape growers. It also covers the effectiveness of various fungicides for control...
Resource Type:: Technical Report
Full Text:: Wine Grapes in Oregon · EM 8413 · page 8 CONTINUED—Dormant (before bud break, stage 00) Pest and

ScholarsArchive@OSU

Managing insects and diseases of Oregon conifers

Needle diseases in Oregon coast range conifers

Fungal diversity within decomposing woody conifer roots in Oregon

Impact of Armillaria and annosus root diseases on stand and canopy structure, species diversity, and down woody material in a central Oregon mixed-conifer forest

Leaf-feeding sawflies in wheat

A new pest attacking healthy ripening fruit in Oregon : spotted wing Drosophila : Drosophila suzukii (Matsumura)

Epidemiology of grape powdery mildew, Uncinula necator, in the Willamette Valley

Hop cone tip blight : a new disease in the Pacific Northwest

Winter grain mite: a fall and winter pest of cereals and grasses in Oregon

2019 pest management guide for wine grapes in Oregon

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