This study reports finding of two rootstock experiments planted in 1997. The purpose of the first experiment was to evaluate the performance of Pinot noir on 19 phylloxera-resistant rootstocks and as an ungrafted vine. The purpose of the second experiment was to evaluate the performance of V. Vinifera cultivars Pinot noir, Chardonnay, Pinot gris and Merlot grafted to nine phylloxera-resistant rootstock, and as ungrafted vines. Data for both experiments were collected in 2000 and 2001, the fourth and fifth years of establishment respectively. Vines received supplemental irrigation and were fertilized with N-P-K during both seasons. In the first experiment, rootstock affected vegetative growth, chlorophyll content, yield, cluster weight and berry weight in both years, gas exchange measurements in 2000, and fruit composition in 2001. Of the V. riparia x V. rupestris rootstocks, 3309C and Schwarzmann imparted low to moderate vigor, as reflected by pruning weight. 101-14 Mgt imparted higher vigor to Pinot noir than 3309C. Based on ripening index values (soluble solids/titratable acidity, Brix/TA), ripening appeared to be earlier for vines grafted to 101-14 Mgt and Schwarzmann than for 3309C. The V. berfandieri x V. riparia rootstocks, including 161-49C and 420A, imparted average to higher than average vigor. Ripening appeared to be later than average and berries larger than average for vines grafted to these rootstocks. With the exception of 110R, the V. berlandieri x V. rupestris rootstocks had higher than average vigor. Ripening times seemed to be average and berry weights were higher than average for vines grafted to these rootstocks. Of the remaining-rootstocks 1616C performed much like the V. berlandieri x V. rupestris rootstocks with an even higher ripening index. Borner, Riparia Gloire, 44-53 Malegue and Gravesac all imparted low to moderate vigor. Berry weights tended to be average to lower than average. Riparia Gloire and Gravesac seemed to impart earlier ripening, while Borner and 44-53 Malegue did not. In the second experiment, the V. berlandieri x V. riparia rootstocks imparted more vigor, a higher yield, a higher berry weight and delayed ripening as reflected by the ripening index. 101-14 Mgt imparted a higher pruning weight, lower berry weight and earlier ripening than 3309C. 110R, 44-53 Malegue and Gravesac conferred moderate vigor as reflected by pruning weight. Riparia Gloire conferred lower vigor. Ripening times imparted by these rootstocks ranged from early for Riparia Gloire and Gravesac, to average for 110R and later for 44-53 Malegue. Berry weights were average for scion grafted to 110R and Gravesac, and low for scion grafted to Riparia Gloire and 44-53 Malegue. / Graduation date: 2002

Wild turkey (Meleagris gallopavo) ecology has been examined within its native range, but knowledge of extralimital populations of Rio Grande wild turkeys (M. g. intermedia) is lacking. I investigated habitat use, characteristics of activity sites, home ranges and movements, productivity, and survival of Rio Grande turkey hens from 1989 through 1991. I obtained >6,000 locations of 76 radio-tagged hens in Douglas County, Oregon and quantified characteristics of 99 roosts, 126 nests, and 64 brood-rearing sites. Turkeys selectively used meadows and hardwood/conifer cover types during winter and summer (P < 0.05). Adult hens roosted in dense young conifer stands more often than expected throughout the year; hardwood/conifer woodlands were used more than expected for roosting by all flocks (P < 0.05). Hens nested in 8 of 10 cover types; recent clearcuts were used more than expected (P < 0.05). Use of meadows and hardwood/conifer habitats by brood hens exceeded availability (P < 0.05). Dense sapling/pole and mature conifer stands were used less than expected at all times (P < 0.05). Adults roosted in Douglas firs (Pseudotsuga menziesii) more than expected (P < 0.05), but hen-poult flocks roosted in tree species in proportion to availability (P > 0.50). Nest sites were characterized by relatively dense understory, but no relationship was observed between nest success and vegetation characteristics. Brood-rearing sites had sparse horizontal screening and moderate vegetative cover. The overall nesting rate was 97% and renesting accounted for 17% of poults hatched. In contrast to other populations, renesting after brood loss was common among adult hens. Annual survival rates varied among years (0.50 to 0.89) but did not differ between adults and yearlings (P > 0.17). Prescribed burning to reduce dense shrub cover should improve stands for nesting and brood rearing. Maintaining or increasing areas of mixed hardwood/conifer cover types would ensure availability of habitat for brood rearing, roosting, and year-round use. My research indicated that Rio Grande turkeys were more adaptable and productive than Merriam's wild turkeys (M. g. merriami) in Oregon. High nest success in several cover types and use of several cover types for brood rearing and roosting indicated that Rio Grande turkeys would thrive under a variety of habitat conditions. / Graduation date: 1996 / Presentation date: 1996-04-05

The effects of broadcast gypsum on infiltration rates, crusting, aggregate stability, and runoff and sediment yields were analyzed during the winter months on three West Oregon soils. The results were used to evaluate its utility as a management tool to help control erosion. An application rate of two metric tons per hectare was used in the first season of testing. No differences were found between treated and untreated soil for infiltration rates, crust thickness and porosity, and aggregate stability. Runoff and sediment yields were too variable to discern differences between treated and untreated soil. The range of application rates were increased to 4, 8, and 16 metric tons of gypsum per hectare in the second season of testing. These evaluations were made at one site. The highest rate was used for comparative purposes with the untreated soil. Infiltration rates were consistently lower while sediment yields and concentrations were higher from the treated soil throughout the season. Water stable aggregate size distribution was lower in the treated soil. It was postulated that crust strength was reduced by the gypsum application. The soil surface aggregates from the treated soil were consistently higher in moisture content. This decreased the infiltration rates and provided a more erodible condition. Runoff and sediment yields from the erosion plots were more dependent on vegetative cover than on treatment. / Graduation date: 1981

Graduation date: 1953

Graduation date: 1961 / For master (tiff) digital images of maps contained in this document contact scholarsarchive@oregonstate.edu

Graduation date: 1992

This study investigated the prevalence of workplace drug prevention programs with regards to employee drug policies, drug testing, and employee assistance programs in a sample of Oregon manufacturing companies. The objectives of the study included: 1) identifying the contributing factors that supported the decision to implement or not implement a workforce drug policy and or a drug testing program; 2) identifying the different drug testing programs in use; 3) assessing how companies evaluated their drug testing programs; and 4) identifying the drug abuse-related services being provided through company employee assistance programs. A sample of 152 Oregon manufacturing companies with 100 or more employees was obtained from the Directory of Oregon Manufacturers, 1989-1990. A researcher-designed instrument was used to collect the information. Statistical procedures used for data analysis included frequency distribution, cross tabulation, and chi square. Approximately 80 percent of the manufacturing companies surveyed had a written workplace drug policy (83 percent) and a drug testing program (81 percent). In addition, 75 percent of the organizations had an employee assistance program which provided drug abuse-related services. Differences between manufacturers with drug polices and those without policies were not significant when comparisons were made based on company size and industry classification. Statistically significant differences were found between companies utilizing drug tests and those not testing when comparisons were made based on company size and industrial classification. Companies with drug testing programs (n= 123) administered tests to both job applicants (97 percent) and employees (92 percent). Applicants testing positive for drug use were not hired by most companies (93 percent), while "positive" employees were often (76 percent) referred to an employee assistance program. Few organizations (32 percent) attempted to measure the effectiveness of their testing program. Recommendations for further research included examining the drug prevention programs in a sample of all Oregon businesses. In addition, research should assess the perceptions of workers in Oregon with regards to the issue of workplace drug testing. / Graduation date: 1992

Graduation date: 1955

The purpose of this study was to examine how three groups of counselors 1n Oregon's secondary schools viewed the issue of what tasks should be performed by the Oregon secondary school counselor. The three groups surveyed were: sixty-three counselors who have standard norms, sixty-six counselors who have basic norms, and fifty-six who do not have a counseling norm. The survey was developed by issuance of a questionnaire based on the 1973 ASCA policy on the Role of the Counselor in the Secondary School. How closely each of the three groups agreed with that policy was the basis of this study. The questionnaire was an original instrument which was based in part on direct statements from the ASCA Policy Statement, and in part by assertions made by the writer on inferences made in the ASCA Policy Statement. Review of the relevant literature showed some vast disagreements as to the opinion of various groups about tasks that counselors should perform. The literature also concluded that the difference in opinion cannot necessarily be attributed to levels of training. Some studies showed an advantage toward those with more training, some showed advanced training to be a disadvantage, but most showed no significant difference. However, only two used the ASCA Policy as a basis for their studies. The reliability of the questionnaire was .88 using the Spearman Brown Formula of odd and even items placed in matched groups. The four hypotheses were tested by use of the one-way analysis of variance, fixed design. All four hypotheses were accepted at the .O5 level of confidence and in addition, hypotheses one, three and four were accepted at the .01 level of confidence. The four hypotheses were: Hypothesis 1: A significant difference will exist among Group A, Group B, and Group C in the perception of tasks of the counselor on the total group means. Hypothesis 2: A significant difference will exist among Group A, Group B, and Group C in the perception of tasks of the counselor on Section 1 questions which deal with the counselor and his relationship to the student and his family. Hypothesis 3: A significant difference will exist among Group A, Group B, and Group C in the perception of tasks of the counselor on Section 2 questions which deal with the counselor and his relationship to the school staff and administration. Hypothesis 4: A significant difference will exist among Group A, Group B, and Group C in the perception of tasks of the counselor on Section 3 questions which deal with the counselor and his relationship to his profession. Recommendations included the need for implementation of the 1973 ASCA Policy into all groups of counselors, counselor educators and administrators who work with the counselor. Also recommended was an in-depth study of the training of the 473 (54.55 percent) counselors in Oregon who do not hold counseling norms to ascertain how much training would be required to obtain the norm and then create training programs to complete the norms. The final recommendation was one to review certification practices in Oregon to avoid allowing "blanket" credentials to carry out any certified school tasks. Research which was recommended by the findings of this study included an attempt to discover how effectively the three groups of counselors carry out their tasks, since this study sought to define and not evaluate. Also recommended was an attempt to discover how counselors in practice differ in perception of counselor tasks with other groups of educators and school community. An item analysis to find specific areas of concern was also recommended. / Graduation date: 1974

During the period 1970-76, Siletz Spit on the mid-Oregon coast has suffered foredune erosion. This erosion is associated with high wave conditions along the coast, produced by intense storms in the North Pacific. During the winter of 1972-73 and during January through March 1976 the erosion was particularly severe. The pre-1975 erosion of the spit has been documented in a previous study. One of the main purposes of the present study is to document the 1976 erosion and to contrast it with the earlier episodes. It differed principally in that a small wash-over of the spit occurred in one area and beach drift logs were thrown up onto the dunes. Neither occurred during previous erosion episodes, even during the 25 December 1972 storm when wave breakers exceeded a significant wave height of 7 meters. This is because the 1972 storm occurred at a time of low water level, neap tide conditions. In contrast, the 18 February 1976 major storm occurred during spring tide conditions, causing the wash-over and log throwing, even though the waves were smaller than in December 1972. The amount of dune retreat was somewhat less in 1976 than in 1972-73, partly because of the shorter time period over which the 1976 erosion occurred and partly because of the use of protective riprap. The large waves causing the erosion at Siletz Spit are generated by storms in the North Pacific. The storm systems for December 1972, January 1973, and February 1976 were analyzed as to fetch distances, wind speeds and directions, movements of the fetches, and other factors important in the generation of waves. Waves hindcasted from these data were compared with measurements of the waves obtained from a seismometer system at the Marine Science Center in Newport, Oregon. This comparison demonstrated that these distant fetches were responsible for the waves causing erosion on Siletz Spit. Waves generated locally by coastal winds appear to be of negligible importance in the erosion. This is also shown by a comparison between the wave measurements and data on the coastal winds at Newport during the times of maximum erosion. Tides were investigated for their role in contributing to coastal erosion. High spring tides allow the storm waves to better reach the dunes or sea cliffs and so permit greater erosion. Neap tides, with their lower water levels, diminish the amount of erosion. Many of the differences in the December 1972 and February 1976 erosion episodes were due to the difference in tide levels. Storm surges were determined for Yaquina Bay, Oregon, by subtracting the predicted high-tide levels from the observed levels. It was concluded that significant storm surges did not occur at the times of maximum spit erosion and therefore did not contribute to the erosion processes. / Graduation date: 1977