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Identification and control of knapweed species in central and eastern Oregon

Creator:: Detweiler, Amy Jo and Oregon State University. Extension Service
Abstract:: Four species of Centaurea are commonly found in central and eastern Oregon, including spotted knapweed (Centaurea maculosa), diffuse knapweed (Centaurea diffusa), Russian knapweed (Centaurea repens), and yellow starthistle (Centaurea solstitialis). These four species are a serious problem throughout Oregon and the Pacific Northwest. Stands of knapweed can choke out natural...
Resource Type:: Technical Report
Full Text:: Identification and Control of Knapweed Species in Central and

Knapweeds, Centaurea spp., Acroptilon repens

Creator:: Oregon State University. Extension Service
Abstract:: Knapweeds are a serious problem in Oregon because they vigorously invade disturbed or degraded sites and form dense populations that exclude native and desirable plant communities, causing economic and ecological losses. Their ability to spread rapidly by seeds and roots makes control very difficult. Seeds can remain viable for 5...
Resource Type:: Technical Report
Full Text:: key is a long-term, continuous effort. Figure 1.—Spotted knapweed. Photo: Eric Coombs, Oregon

Managing yellow starthistle in southwestern Oregon

Creator:: Oregon State University. Extension Service, Roche, Cindy Talbott, and White, G. R. (George Randolph), 1958-
Abstract:: In the heat of summer in the Rogue Valley, yellow starthistle (Centaurea solstitialis) raises heads of brilliant yellow flowers rigidly defended by sharp spines. Although bees reap double benefits of nectar and pollen during a season when most native plants no longer are flowering, this nonnative weed is a threat...
Resource Type:: Technical Report
Full Text:: Oregon In the heat of summer in the Rogue Valley, yellow starthistle (Centaurea solstitia- lis

Key to the deciduous woody plants of Northwestern Oregon in winter

Creator:: Packard, Patricia Lois
Resource Type:: Masters Thesis
Full Text:: Key to the deciduous woody plants of Northwestern Oregon in

Identifying insects and other arthropods in Oregon

Creator:: Hollis, Brad C., Rondon, Silvia I., Young, James Daniel, 1980-, and Oregon State University. Extension Service
Abstract:: Published June 2009. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Other
Full Text:: . Identification Services in Oregon The Oregon State University Extension Service provides identification services

Pocket Field Guide : Oregon jellies

Creator:: Zeman, Samantha, Brodeur, Richard, Hansen, Clare, and Sutherland, Kelly
Abstract:: Ever wonder what that jelly-like blob on the beach is? Want to know how to identify a bloom of jellyfish? This guide was created to help identify common gelatinous animals encountered at sea or beachcombing. With this guide you can appreciate the diversity of gelatinous animals on the Oregon coast...
Resource Type:: Book
Full Text:: Pocket Field Guide OREGON JELLIES Ever wonder what that

Trees to know in Oregon

Creator:: Ross, Charles R. (Charles Robert), 1908-, Oregon State College. Federal Cooperative Extension Service, and Oregon State Board of Forestry
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: •tive Extension Service, Oregon State College, Corvallis, •nd the Oregon State Board of Forestry

A collection of Oregon Woods : progress report 1

Creator:: West, W. I. (William Irvin), 1916-
Abstract:: The purpose of this report is to make the existence of the Oregon State College xylarium and this particular collection known to interested individuals and agencies in the United States and Canada. At the time of writing, the collection embraces 707 samples of 181 species representing 72 genera and 31...
Resource Type:: Technical Report
Full Text:: . .. . - . - A COLLECTION OF OREGON WOODS ' ' Organization Identification of specimens has been according to

Eastern Oregon shrub quiz - key [1956]

Creator:: Oregon State College. Federal Cooperative Extension Service, Randall, Warren R., Ross, Charles R. (Charles Robert), 1908-, Oregon State College. Herbarium, and United States. Forest Service
Abstract:: Blank quiz sheets published separately as EC 615.
Resource Type:: Learning Object
Full Text:: Extension Circular 616 Eastern Oregon Shrub Quiz Key Blank quiz

Eastern Oregon shrub quiz [1956]

Creator:: Randall, Warren R., Ross, Charles R. (Charles Robert), 1908-, Oregon State College. Herbarium, and United States. Forest Service
Abstract:: Answers published separately as EC 616.
Resource Type:: Learning Object
Full Text:: Extension Circular 615 September 1956 Eastern Oregon Shrub Quiz

ScholarsArchive@OSU

Identification and control of knapweed species in central and eastern Oregon

Knapweeds, Centaurea spp., Acroptilon repens

Managing yellow starthistle in southwestern Oregon

Key to the deciduous woody plants of Northwestern Oregon in winter

Identifying insects and other arthropods in Oregon

Pocket Field Guide : Oregon jellies

Trees to know in Oregon

A collection of Oregon Woods : progress report 1

Eastern Oregon shrub quiz - key [1956]

Eastern Oregon shrub quiz [1956]

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