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Taper, crown, and volume responses of a coastal Oregon Douglas-fir stand to sulfur treatments for control of Swiss needle cast

Creator:: Younger, Nicole L.
Abstract:: For nearly two decades, foresters in the Oregon Coast Range have been witnessing a substantial decease in Douglas-fir (Pseudotsuga menziesii var. menziesii [Mirb.] Franco.) vigor and growth, caused by Swiss needle cast (Phaeocryptopus gaeumannii). Currently, no solutions are in sight but aerially-applied sulfur may alleviate Swiss needle cast and its...
Resource Type:: Masters Thesis
Full Text:: 14, 2007. Title: Taper, Crown, and Volume Responses of a Coastal Oregon Douglas-fir Stand to

Douglas-fir beetle population assessment : Idaho Panhandle National Forests, 2000

Creator:: Kegley, Sandy, McConnell, Timothy J., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: and Tim McConnell • Introduction • This report documents Douglas-fir beetle (DFB), Dendroctonus

Analysis of Douglas-fir beetle population dynamics from aerial survey data using group size analysis

Creator:: Randall, Carol, United States. Forest Health Protection, and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: Portion of the Forest: Coeur d'Alene River and Sandpoint Figure 3. Numbers of Douglas-fir-beetle-killed

Douglas-fir beetle population assessment : Idaho Panhandle National Forests

Creator:: Kegley, Sandy, United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: The unusually large amount of ice, snow, and wind-damaged trees that occurred during the winter of 1996-97 provided prime habitat for populations of the Douglas-fir beetle (DFB) (Dendroctonus pseudotsugae) to build to epidemic numbers. Beetles emerged during the spring and summer of 1998, attacking hundreds of thousands of standing Douglas-fir...
Resource Type:: Technical Report
Full Text:: parasites and predators was also recorded. Results Thirty-four Douglas-fir beetle infested tree groups

Effects of spring applications of dazomet on root diseases and performance of Douglas-fir and western white pine transplants, USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: Tests were conducted at the USDA Forest Service Nursery, Coeur d'Alene, Idaho to evaluate effectiveness of spring fumigation with dazomet to improve survival and performance of Douglas-fir and western white pine transplants. Spring fumigation greatly reduced populations of potentially pathogenic Fusarium and Pythium spp. Disease levels of container (plug+1) and...
Resource Type:: Technical Report
Full Text:: and Pythium spp. Disease levels of container (plug+1) and bare root (2+1) • Douglas-fir transplants

Effects of topical application of the biological control agent Biotrek on production of bareroot Douglas-fir and western white pine seedlings, USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: A preliminary evaluation of the biological control formulation of Trichoderma harzianum marketed as BioTrek® was conducted on bareroot Douglasfir and western white pine seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho. The biocontrol material was applied topically on seed shortly after sowing and comparisons made between treated and...
Resource Type:: Technical Report
Full Text:: treatments. Plant Disease 73:631-637. James, R.L. 1982. Pythium root disease of Douglas-fir and grand fir

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

Creator:: Sathuvalli, Vidyasagar R.
Abstract:: The hundred-year history of the hazelnut industry in the Pacific Northwest is threatened by eastern filbert blight (EFB) caused by the fungus Anisogramma anomala (Peck) E. Müller. Marker-assisted selection (MAS) has been extensively used for ‘Gasaway’ resistance in the hazelnut breeding program at Oregon State University. Concern over breakdown of...
Resource Type:: Masters Thesis
Full Text:: , ‘Ratoli’ and OSU 759.010) have shown no signs or symptoms of the disease following a series of

Biology of sweet cherry powdery mildew

Creator:: Calabro, Jill M.
Abstract:: The Pacific Northwest has become one of the nation’s premier sweet cherry, Prunus avium, production areas. As production of sweet cherries has flourished in Oregon and Washington, so has powdery mildew, caused by the fungus Podosphaera clandestina, which infects both foliage and fruit causing severe economic damage to growers. Sweet...
Resource Type:: Dissertation
Full Text:: , Prunus avium, production areas. As production of sweet cherries has flourished in Oregon and

Fecundity of the aphid Rhopalosiphum padi on selected Oregon grasses

Creator:: Adams, Vincent T.
Abstract:: Barley yellow dwarf virus (BYDV) is a globally distributed pathogen of grasses that is transmitted by aphids. Little research has been done examining the response of aphids to different host grasses in naturally mixed communities. We measured the short-term fecundity of the aphid Rhopalosiphum padi, a widely distributed vector of...
Resource Type:: Honors College Thesis
Full Text:: padi, a widely distributed vector of BYDV, on a broad array of Oregon Poaceae in field and laboratory

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

Creator:: Dreves, Amy J.
Abstract:: In Oregon’s northern Willamette Valley, cabbage maggot (CM), Delia radicum (L.) (Diptera: Anthomyiidae) often renders Brassica root crops unmarketable. Scheduled insecticides are the only current control. Studies were conducted to: 1) describe and characterize spring emergence of CM flies and their seasonal flight activity relative to degree-day (DD) accumulations; 2)...
Resource Type:: Dissertation
Full Text:: ............................................................................................... 103 SEASONAL OVIPOSITION BY DELIA RADICUML. IN RUTABAGA AND TURNIP CROPS IN OREGON

ScholarsArchive@OSU

Taper, crown, and volume responses of a coastal Oregon Douglas-fir stand to sulfur treatments for control of Swiss needle cast

Douglas-fir beetle population assessment : Idaho Panhandle National Forests, 2000

Analysis of Douglas-fir beetle population dynamics from aerial survey data using group size analysis

Douglas-fir beetle population assessment : Idaho Panhandle National Forests

Effects of spring applications of dazomet on root diseases and performance of Douglas-fir and western white pine transplants, USDA Forest Service Nursery, Coeur d'Alene, Idaho

Effects of topical application of the biological control agent Biotrek on production of bareroot Douglas-fir and western white pine seedlings, USDA Forest Service Nursery, Coeur d'Alene, Idaho

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

Biology of sweet cherry powdery mildew

Fecundity of the aphid Rhopalosiphum padi on selected Oregon grasses

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

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