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Filtering by: Creator Yulin, Sun Remove constraint Creator: Yulin, Sun Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.) Subject Invasive plants -- Effect of soil moisture on -- Oregon -- Willamette River Valley Remove constraint Subject: Invasive plants -- Effect of soil moisture on -- Oregon -- Willamette River Valley

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  • 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:
    . I would also like to thank to my wife Yulin Sun, my daughter Lisa Liu, and my son George Liu, who