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Filtering by: Subject Invasive plants -- Ecology -- Oregon Remove constraint Subject: Invasive plants -- Ecology -- Oregon Advisor Mallory Smith, Carol Remove constraint Advisor: Mallory Smith, Carol Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • The Biology and ecology of weeping alkaligrass (Puccinellia distans) and Nuttall’s alkaligrass (Puccinellia nuttalliana)

    Creator:
    Tarasoff, Catherine
    Abstract:
    Weeping alkaligrass (Puccinellia distans) and Nuttall’s alkaligrass (Puccinellia nuttalliana) infest Kentucky bluegrass seed fields of eastern Oregon. Weeping alkaligrass is an introduced species from Eurasia, whereas Nuttall’s alkaligrass is native to semi arid environments of western North America. These species are often referred to collectively as ‘alkaligrass’; however, for farmers...
    Resource Type:
    Dissertation
    Full Text:
    Oregon State University Extension Service in 20001. Preliminary field visits and plant identification

  • Response of Roughstalk Bluegrass (Poa trivialis L.) to Waterlogging Stress

    Creator:
    Liu, Mingyang
    Abstract:
    Roughstalk bluegrass (Poa trivialis L.) (RB) is a weed species that increased very quickly in grass seed production fields of the Willamette Valley. The invasion of RB in grass seed crops often occurs in waterlogged soils. In waterlogged areas, RB exhibited better competitiveness and had greater population densities than other...
    Resource Type:
    Dissertation
    Full Text:
    defense system in roots of wheat seedling. Plant Physiol., 116:651-658, 1998. Brewer DH, Oregon Seed