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Managing Himalayan blackberry in western Oregon riparian areas

Creator:: Oregon State University. Extension Service and Bennett, Max, 1963-
Abstract:: Himalayan blackberry (Rubus armeniacus, formerly Rubus discolor and Rubus procerus) is a European shrub that was introduced in the United States as a crop in the late 19th century. It escaped cultivation and has since invaded a variety of sites, including low-elevation streamside areas throughout the Pacific Northwest. Listed as...
Resource Type:: Technical Report
Full Text:: the Pacific Northwest. Listed as a noxious weed in Oregon, Himalayan blackberry rap- idly occupies

Gorse, Ulex europaeus

Creator:: Oregon State University. Extension Service
Abstract:: Gorse is a spiny, evergreen shrub native to the Mediterranean region. It was introduced on the West Coast of the United States as an ornamental in the late 1800s. Gorse was first found in Oregon in Benton County in 1916. Gorse infestations are concentrated along the Oregon coast, particularly south...
Resource Type:: Technical Report
Full Text:: prevent developing herbicide-resistant strains of the weed. For details on chemical control, refer to

Knotweeds, Polygonum spp.

Creator:: Oregon State University. Extension Service
Abstract:: Japanese and giant knotweeds were introduced to North America in the late 1800s as ornamentals but soon escaped into the wild. They are particularly invasive along streams, roadsides, and waste areas. Large, spreading patches of knotweed can completely dominate and displace native species in open sunlight. Erosion can increase on...
Resource Type:: Technical Report
Full Text:: Oregon Department of Agriculture, Plant Division, Noxious Weed Control. http://oregon.gov/ODA/PLANT

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:: control. Several herbicides are effective against knapweeds, but successful weed treatment depends on

Slender false-brome, Brachypodium sylvaticum

Creator:: Oregon State University. Extension Service
Abstract:: Slender false-brome is a perennial grass species native to Europe, Asia, and North Africa. The species has exceptionally wide distribution, occupying forested and open areas at a variety of aspects and elevations. Populations are known in riparian forests as well as in upland hardwood and conifer forests under patchy and...
Resource Type:: Technical Report
Full Text:: -resistant strains of the weed. For details on chemical control, refer to the current edition of the PNW

Himalayan blackberry, Rubus armeniacus (discolor), Evergreen blackberry, Rubus lacinatus

Creator:: Oregon State University. Extension Service
Abstract:: Himalayan blackberry, also known as Armenian blackberry, is a widespread invasive species in western Oregon and also grows in some eastern Oregon riparian zones. Commonly found in riparian areas, it also grows along roadsides and fence corridors and in open woodlands, logged areas, and other disturbed sites. It grows best...
Resource Type:: Technical Report
Full Text:: information Oregon Department of Agriculture, Plant Division, Noxious Weed Control. http://oregon.gov/ODA

Common weeds in Oregon container crops

Creator:: Altland, James Elmer, 1973- and Oregon State University. Extension Service
Abstract:: Effective weed management involves a combination of sanitary and cultural practices, along with proper use of preemergence herbicides.
Resource Type:: Technical Report
Full Text:: herbicides. For a thorough description of weed control practices, see OSU Extension publica- tion EM 8823

Weed management in mint

Creator:: Hulting, Andrew Gerald, Brewster, Bill D., Mallory-Smith, Carol, Affeldt, Richard P., Hinds-Cook, Barbara, Krenz, Jennifer E., and Oregon State University. Extension Service
Abstract:: Revised August 2008. 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:: Poster
Full Text:: western Oregon. Addition of Gramoxone to residual herbicides might be necessary for adequate control

The effects of defoliation on yellow starthistle (Centaurea solstitialis L.) reproductive capacity

Creator:: Schumacher, Stacy
Abstract:: Yellow starthistle (Centaurea solstitialis L.) is an introduced Asteraceae that has become established on 10 million acres in the Pacific Northwest and California. This weed functions as an annual or short-lived perennial and depends on seeds for reproduction. Strategies of control that reduce plant fitness or lower seed production or...
Resource Type:: Masters Thesis
Full Text:: northeastern Oregon 47 14. Percent infestation of yellow starthistle seedheads of biological control agents

Small broomrape (Orobanche minor) biology and management in red clover (Trifolium pratense) seed production

Creator:: Lins, Ryan D.
Abstract:: Small broomrape (Orobanche minor) is a parasitic weed that attaches to the roots of red clover (Trifolium pratense). Small broomrape invasion presents a significant threat to the future of red clover seed production in Oregon. This study was conducted to investigate and develop small broomrape management options for red clover...
Resource Type:: Dissertation
Full Text:: . Broomrape (Orobanche cumana) control in sunflower (Helianthus annuus) with imazapic. Weed Technol. 15:306

ScholarsArchive@OSU

Managing Himalayan blackberry in western Oregon riparian areas

Gorse, Ulex europaeus

Knotweeds, Polygonum spp.

Knapweeds, Centaurea spp., Acroptilon repens

Slender false-brome, Brachypodium sylvaticum

Himalayan blackberry, Rubus armeniacus (discolor), Evergreen blackberry, Rubus lacinatus

Common weeds in Oregon container crops

Weed management in mint

The effects of defoliation on yellow starthistle (Centaurea solstitialis L.) reproductive capacity

Small broomrape (Orobanche minor) biology and management in red clover (Trifolium pratense) seed production

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