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Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Creator:: Murray, Marion S.
Abstract:: In 1991 Pacific yew (Taxus brevifolia Nutt.) was reported as a new host for Phytophthora lateralis Tucker and Milbrath which is an aggressive root rot pathogen thought previously to be specific to Port-Orford-cedar. This study was designed to compare the pathogenicity of P. lateralis on the two hosts, and to...
Resource Type:: Masters Thesis
Full Text:: Phytophthora lateralis-killed Port-Orford-cedar and Pacific yew trees and seedlings. 4. Means of disease

Distribution and Ecological roles of arthropods in dead woody materials of ponderosa pine forests, northern California

Creator:: Lemieux, Jeffrey P.
Abstract:: This dissertation describes arthropod responses to and effects on decay processes in ponderosa pine, a dominant forest canopy tree in northern California. We used both descriptive and experimental field techniques to establish how arthropod assemblages depend on and are important to the disintegration of woody structures in forests of this...
Resource Type:: Dissertation
Full Text:: northern California, USA, 1999-2000 inside and on the cortex of dead trees, on the forest floor in canopy

The raspberry fruit worm

Creator:: Oregon State College. Agricultural Experiment Station and Mote, Don C. (Don Carlos), 1887-
Abstract:: Published March 1928. 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:: worm, prevalent for some time but relstive1y inactive in the Pacific Northwest, last year did more

Spatial and ecological analysis of red fir decline in California using FIA data

Creator:: Mortenson, Leif A.
Abstract:: Red fir (Abies magnifica) is a high elevation conifer generally growing between an altitude of 1,400 and 2,700 meters. In California, red fir grows in the Sierra Nevada, the Klamath Mountains, the eastern edges of the northern Californian Coast Ranges, and in the southern Cascades. Red fir commonly grows in...
Resource Type:: Masters Thesis
Full Text:: California (Christensen et al. 2008). The inventory records the incidence of insects and disease, forest

Insects on mint

Creator:: Oregon State University. Cooperative Extension Service, Washington State University. Cooperative Extension Service, University of Idaho. Agricultural Extension Service, Pacific Northwest Cooperative Extension, Berry, Ralph E. (Ralph Eugene), 1940-, and Fisher, Glenn C.
Abstract:: Published November 1977. 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:: Pacific Northwest with more than 55,000 acres of peppermint and 16,000 acres of spearmint valued in

Effect of site and silvicultural treatment on insect pests and diseases of young ponderosa pine

Creator:: Norlander, Daniel W. D.
Abstract:: Ponderosa pine is an important species both commercially and ecologically in western North America. This study considers the incidence of insect and disease pests on a series of replicated ponderosa pine research plantations in northern California. The studies, on an environmental gradient, contain a series of silvicultural treatments including vegetation...
Resource Type:: Masters Thesis
Full Text:: western North America. This study considers the incidence of insect and disease pests on a series of

Population dynamics, distribution, and control of nematodes in highbush blueberries

Creator:: Schroeder, Jan-Marie
Abstract:: Fluctuations in population density of Pratylenchus sp., Trichodorus sp., and Xiphinema americanum s. 1. in three blueberry fields were determined monthly for one year. Pratylenchus densities were greatest in August and least in October. Three distinct periods of population growth occurred; during January, April, and between June and August. Trichodorus...
Resource Type:: Masters Thesis
Full Text:: .) The Pacific Northwest climate and soils west of the Cascades are very favorable for nematode growth

Plant-parasitic nematodes affecting wheat yield in the Pacific Northwest

Creator:: Oregon State University. Extension Service and Smiley, Richard W.
Abstract:: Nematodes are roundworms with complex organ systems. They occur worldwide in all environments. Most species benefit agriculture by contributing to decomposition of organic matter and are important members of the food chain. Some species are parasitic to plants or animals. More than 2,000 of the 20,000 identified nematode species are...
Resource Type:: Technical Report
Full Text:: disease, or barley yellow dwarf. Yield constraints by cyst and lesion nematodes All plant-parasitic

The raspberry fruit worm

Creator:: Oregon State College. Agricultural Experiment Station and Mote, Don C. (Don Carlos), 1887-
Abstract:: Published October 1927. 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:: opportunity has been afforded to study this pest in the Wes-t. In England, the logan and raspberry fruit worm

Diseases and insect pests of Pacific madrone

Creator:: Bennett, Max, 1963-, Shaw, David Carl, 1955-, and Oregon State University. Extension Service
Abstract:: Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: progression of Phytophthora ramorum and Botryosphaeria dothidea on Pacific madrone. Plant Disease 88: 852

ScholarsArchive@OSU

Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Distribution and Ecological roles of arthropods in dead woody materials of ponderosa pine forests, northern California

The raspberry fruit worm

Spatial and ecological analysis of red fir decline in California using FIA data

Insects on mint

Effect of site and silvicultural treatment on insect pests and diseases of young ponderosa pine

Population dynamics, distribution, and control of nematodes in highbush blueberries

Plant-parasitic nematodes affecting wheat yield in the Pacific Northwest

The raspberry fruit worm

Diseases and insect pests of Pacific madrone

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