Theses and Dissertations at Montana State University (MSU)
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Item The selection of native plants for use in the Montana landscape: selection criteria, aesthetic, cultural and environmental evaluation(Montana State University - Bozeman, College of Agriculture, 1985) Bruce, Shelly Marie Engler; Chairperson, Graduate Committee: Richard K. PohlDuring the past 15 years the landscape industry has experienced increased pressure to use native plants as ornamentals. Although a demand for natives in general exists there has been a relunctance on the part of the industry to offer native species because of the economic risks involved. An ornamental scorecard was developed as an evaluation tool for comparing native plant species with plant species currently available on the ornamental market. The scorecard evaluated 24 native Montana plant species and 20 exotic ornamentals commonly used in the landscape industry in Montana. The aesthetic scorecard rated six visual characteristics using color photographs. Scored were form/habit, flower, fruit, bark, leaf, and seasonal characteristics. The thirteen environmental factors evaluated by the environmental scorecard were transplantability, lifespan, propagation, maintenance/cleanliness, soil texture and pH, moisture regime adaptability (both drought and flood tolerance), exposure tolerances (temperature, light, and wind), insect resistance, and disease resistance. Species were scored by a panel of professional evaluators in the botany, horticulture, nursery and landscape design/architecture fields. These scores allow selection of native plant species with visual and/or functional qualities that are of equal or greater value than those exhibited by plants already available on the retail market, and thus exhibit competitive marketing potential.Item Restoration of spotted knapweed infested grasslands in Glacier National Park(Montana State University - Bozeman, College of Agriculture, 2003) Stringer, Lewis Tipton; Chairperson, Graduate Committee: Catherine A. ZabinskiThere is an immediate and on-going need in Glacier National Park (GNP), and other public and private lands, to determine effective methods to re-establish and sustain native plant populations following control treatments of Centaurea maculosa. My research was developed in response to GNP concerns regarding annual herbicide treatment of C. maculosa invaded sites. The aim of this study was to determine if herbicide applications, site preparation and revegetation methods would increase the density and percent cover of native species, while reducing spotted knapweed at two sites in and near Glacier National Park. A priori contrast analysis was used to determine differences in treatment effects. The results of my experiment show that spot spray herbicide application reduced C. maculosa cover without significantly reducing existing native forbs. However, a repeat-herbicide application increased exotic graminoid cover. Tillage reduced the density of C. maculosa seedlings, but resulted in an increase in C. maculosa percent cover, and an overall decline in native forbs. Revegetation methods had limited success at increasing native species, and reducing C. maculosa. The only effect was at Swift Current, where the percent cover of native forbs was significantly higher with the planting treatment, and most pronounced in plots with repeat-herbicide application. Additionally, we measured the composition and density of the seed bank in C. maculosa dominated sites using the seedling emergence method. C. maculosa density was 3,900 and 6,714 seeds / m 2 at the two sites, which was 2 and 3 times higher than the sum of all other species. Seed bank composition and density needs to be considered in efforts to restore C. maculosa infested areas.Item Graduate Level Tutoring and Writing Center Administration : A Primer(Montana State University - Bozeman, College of Letters & Science, 2002) Snyder, Margaret ShawnItem Heights and weights of Northern Cheyenne children : comparison to the international growth reference(Montana State University - Bozeman, College of Nursing, 1992) Dodson, Mary MargaretItem Driller specific capacity as a measure of aquifer transmissivity and a test of the hydrogeologic units in the Gallatin Local Water Quality District, Gallatin County, Montana(Montana State University - Bozeman, College of Letters & Science, 2002) Dixon, Stewart AlanItem Evaluation of full-scale laboratory models of geosynthetic reinforced pavement systems(Montana State University - Bozeman, College of Engineering, 1998) Fogelsong, Macgregor L.Item Effect of supplemental trace mineral level and form on peripubertal bulls(Montana State University - Bozeman, College of Agriculture, 2003) Alexander, Whisper Lynn; Chairperson, Graduate Committee: Raymond P. Ansotegui.Item Geothermal habitats as sites for year-round transmission of Fasciola hepatica(Montana State University - Bozeman, College of Agriculture, 1995) Potts, Robert StanleyItem The in vitro digestibility and utilization of Big Sagebrush and Black Sagebrush(Montana State University - Bozeman, College of Agriculture, 1985) Striby, Karl DavidItem Soil temperature and soil moisture characteristics for several habitat types of Montana and Idaho(Montana State University - Bozeman, College of Agriculture, 1996) Sirucek, Dean