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Creator:: Wada, Sugae
Abstract:: Experiments were conducted to determine the influence of cultural management practices on weed growth in nursery containers. Experiments 1 and 2 evaluated the effects of dolomitic lime rate and application method on substrate pH, creeping woodsorrel (Oxalis corniculata L.) establishment in containers, and growth of azalea (Rhododendron ‘Rosebud’) and pieris...
Resource Type:: Masters Thesis
Full Text:: in smaller size containers competition is more severe. Weed control in containers must be

Creator:: Attarian, Amir
Abstract:: Giant reed (Arundo donax L.) is a candidate to provide feedstock for the Portland General Electric power plant in Boardman, Oregon. Giant reed is a fast perennial grass, producing 23-27 metric tons ha⁻¹ of biomass and has the ability to adapt to diverse environments making it a good candidate for...
Resource Type:: Masters Thesis
Full Text:: yield loss. Therefore, predicting a critical period of weed control (CPWC) that includes the best time

Creator:: Hilgert, Christopher
Abstract:: A series of field experiments conducted at the Lewis-Brown horticulture farm at Oregon State University evaluated the performance of four preemergence herbicides in simulated ornamental shrub beds. Two natural products, corn gluten meal (CGM) and meadowfoam seedmeal (MFS), were used along with two synthetic products, prodiamine purchased under the trade...
Resource Type:: Masters Thesis
Full Text:: MFS provided poor weed control results, and performance of the synthetic herbicides was superior to

Creator:: Miskella, John
Abstract:: Centaurea solstitialis L. (yellow starthistle) and C. × moncktonii Britt. (meadow knapweed) are members of the genus Centaurea in the Asteraceae family. Both species have become serious management concerns as invasive species in North America, often displacing native vegetation and costing land managers millions of dollars to eradicate. Seven plants...
Resource Type:: Masters Thesis
Full Text:: . The Weed Science Society of America lists Centaurea 5 debeauxii Gren. & Godr. as the

Creator:: Haavisto, Jessica Lee
Abstract:: Hare barley (Hordeum murinum ssp. leporinum) is a cool season annual grass that invades pastures and range areas around the world. A documented weed management issue in several Oregon counties, hare barley may infest several thousand acres in western Oregon. This study was conducted to investigate the biology and develop...
Resource Type:: Masters Thesis
Full Text:: grass that invades pastures and range areas around the world. A documented weed management issue in

Creator:: Green, Jessica M.
Abstract:: Weed management in sustainable farming systems often requires the integration of several different pest management techniques. Cultural, biological, and chemical pest control efforts can be utilized to contribute to the common goal of reducing weeds in vegetable row crop systems. This research addresses how common disturbances such as tillage and...
Resource Type:: Masters Thesis
Full Text:: recruitment was highly variable between treatment, site, and year. Conserving biological weed control

Creator:: Dinger, Eric
Abstract:: Early in the establishment of Pacific Northwest conifer plantations, herbaceous weeds often decrease seedling growth through competition for soil moisture during the dry summer months. Critical period studies have reported that reductions in competitive weed cover are necessary during the initial years of establishment to avoid reductions in seedling growth....
Resource Type:: Masters Thesis
Full Text:: growth increased from 5 cm3 in the untreated control to greater than 20 cm3 when total weed cover was

Creator:: Dinger, Eric J.
Abstract:: Three studies were conducted to characterize and present early-seral competition between Douglas-fir seedlings and the surrounding vegetation communities during Pacific Northwest forest establishment. The first experiment served as the foundation for this dissertation and was designed to quantify tradeoffs associated with delaying forest establishment activities by introducing a fallow year...
Resource Type:: Dissertation
Full Text:: Forestry 2(4): 117-119. Chen, F-H. 2004. Effects of weed control on vegetation dynamics in Pacific

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