Index Catalog // ScholarsArchive@OSU

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

2018 pest management guide for wine grapes in Oregon

Creator:: Skinkis, Patricia A., Pscheidt, Jay W., Moretti, Marcelo L., Peachey, Ed, 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 7 CONTINUED—Dormant (before bud break, stage 00) Pest and

Oregon pesticide use estimates for small fruits, 1990

Creator:: Rinehold, John W. and Jenkins, Jeffrey J.
Abstract:: This report, Oregon pesticide use estimates for small fruits, 1990, is the first of five statewide pesticide use surveys covering: small fruits, tree fruits, seed crops and special crops, vegetable crops, as well as small grains, forage crops, and livestock. Oregon Pesticide Impact Assessment Program’s objective is to complete one...
Resource Type:: Technical Report

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Creator:: Schaerer, Brett L.
Abstract:: The structuring of canopy arthropod communities was reviewed and investigated in relation to tree species diversity and its component factors, interspersion of different species and density of each tree species. Fifteen treatments of Douglas-fir (Pseudotsuga menziesii) and red alder (Alnus rubra) (various densities and proportions of each) were randomly assigned...
Resource Type:: Masters Thesis
Full Text:: Western Oregon: the Cascade Head Experimental Forest and the H. J. Andrews Experimental Forest. The six

Forest disease ecology and management in Oregon [1995]

Creator:: Filip, Gregory M., Kanaskie, Alan, Campbell, Allan, 1936-, and Oregon State University. Extension Service
Abstract:: A thorough introduction to disease pathogens, signs and symptoms, and management. Nine chapters cover root diseases (Armillaria, annosus, etc.); stem decays (Indian paint fungus, red ring rot, etc.); rust diseases (stem rusts, broom rusts, etc.); other fungal diseases; mistletoes; abiotic diseases; and effects of forest practices such as thinning on...
Resource Type:: Technical Report
Full Text:: the pest and the natural enemy. 17 The important shoot- and twig-feeding insects of Oregon

ScholarsArchive@OSU

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

2018 pest management guide for wine grapes in Oregon

Oregon pesticide use estimates for small fruits, 1990

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Forest disease ecology and management in Oregon [1995]

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