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Browsing Extension Service -- Miscellaneous / Educational Materials by Author "Colquhoun, Jed"

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Browsing Extension Service -- Miscellaneous / Educational Materials by Author "Colquhoun, Jed"

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  • Oregon State University. Extension Service; Colquhoun, Jed (Corvallis, Or. : Extension Service, Oregon State University, 2001-03)
    Seed production varies greatly among and within weed species in part due to environmental variability between years, competition from neighboring plants, and genetic variability. For example, while Canada thistle has be ...
  • Oregon State University. Extension Service; Ball, Daniel A. (Daniel Allen), 1954-; Parker, R.; Colquhoun, Jed; Dami, I. (Corvallis, Or. : Extension Service, Oregon State University, 2004-03)
    During the past several years, grape acreages have increased significantly in Washington and Oregon (17 percent and 23 percent, respectively, from 1999 to 2002). Unfortunately, herbicide drift can pose a major threat to ...
  • Oregon State University. Extension Service; Ramsay, Carol A.; Parker, Robert, 1941-; Colquhoun, Jed; Gordon, Laurie; Maynard, Roland (Corvallis, Or. : Extension Service, Oregon State University, 2004-06)
    A manual intended for use by those studying for the Oregon rights-of-way vegetation control exam. Includes chapters on basic weed science, vegetation management strategies; herbicides; factors influencing herbicide perfo ...
  • Oregon State University. Extension Service; Lins, Ryan D.; Colquhoun, Jed (Corvallis, Or. : Extension Service, Oregon State University, 2005-01)
    Small broomrape (Orobanche minor Sm.) is a parasitic weed that recently has become troublesome in red clover seed production in Oregon. It was identified in a single red clover seed production field in 1998, and the num ...
  • Oregon State University. Extension Service; Colquhoun, Jed; Lins, Ryan D.; Cole, C. (Charles M.) (Corvallis, Or. : Extension Service, Oregon State University, 2004-09)
    Recent concerns about surface water quality near agricultural production areas have stimulated interest in “best management practices” to reduce the risk of off-site sediment, pesticide, and nutrient movement. Vegetative ...
  • Oregon State University. Extension Service; Colquhoun, Jed; Mallory-Smith, Carol; Ball, Daniel A. (Daniel Allen), 1954- (Corvallis, Or. : Extension Service, Oregon State University, 2003-05)
    Pacific Northwest wheat growers soon will have an additional option for weed control, but the new tool differs greatly from those traditionally used in cereal production. Clearfield wheat has been selected that is toler ...
  • Oregon State University. Extension Service; Colquhoun, Jed; Brewster, Bill; Mallory-Smith, Carol; Burr, Ronald J. (Corvallis, Or. : Extension Service, Oregon State University, 2001-10)
  • Oregon State University. Extension Service; Colquhoun, Jed; Affeldt, Richard P. (Corvallis, Or. : Extension Service, Oregon State University, 2002-09)

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