Index Catalog // ScholarsArchive@OSU

Growth characteristics and site potentials of perennial grass species

Creator:: Borman, Michael M.
Abstract:: In this study I assessed the potentials of selected, established perennial grasses to maintain site occupancy in the foothills ecosystem of the Rogue River Valley of southwest Oregon which is currently dominated by a variety of annual plants. The first evaluation compared growth curves of the perennial grasses and contrasted...
Resource Type:: Dissertation
Full Text:: advantage over annual grasses (Harris 1967, Harris and Wilson 1970). Prior root development facilitates

Sex and life stage sensitivity of rainbow trout to xenoestrogens

Creator:: Carlson, David B., 1970-
Abstract:: Numerous natural and anthropogenic chemicals interact with endocrine systems of animals. The most widely studied of these endocrine active chemicals (EACs) are estrogen receptor agonists and antagonists. Because of the many important roles of estrogens in animals, xenoestrogens have the potential to impact environmental health. It has been proposed that...
Resource Type:: Dissertation
Full Text:: spenn counts were described and attributed to EACs in a 1993 report (5). Several studies showed that

Tactics of Pacific Northwest albacore fishermen - 1968, 1969, 1970

Creator:: Keene, Donald Frederick
Abstract:: This study examines the relationship between fishing activities of Pacific Northwest albacore fishermen and the availability of albacore. Tactical responses of troll-boat fishermen were compared to changes in daily apparent albacore abundance. Tactical responses included boat aggregation and total applied effort (number of boats) within a particular area, and net...
Resource Type:: Dissertation
Full Text:: : TACTICS OF PACIFIC NORTHWEST ALBACORE FISHERMEN 1968, 1969, 1970 Abstract approved: William G. This

Temperature preconditioning of ryegrass (Lolium sp.) seed dormancy

Creator:: Wiesner, Loren E.
Abstract:: The purposes of this study were to determine the effects of temperature, nutrients, growth regulators, and culm detachment during seed development on ryegrass seed dormancy and weight. The effects of storage temperature on seed dormancy were also studied. Seed dormancy of annual (Lolium multiflorum Lam.) and perennial (Lolium perenne L.)...
Resource Type:: Dissertation
Full Text:: dormancy for 12 annual ryegrass varieties in 1970. Analysis of variance of seed dormancy for 11 perennial

A quadratic programming algorithm for deriving efficient farm plans in a risk setting

Creator:: Bauer, Leonard
Abstract:: The main focus was on developing an algorithm and supporting computer programs for use by extension personel to counsel farm managers on problems of enterprise choice. Investigation was initiated from the complete certainty viewpoint of linear programming. Upon introducing uncertainty, ramifications of changing expected income, variance and the correlation coefficient...
Resource Type:: Dissertation
Full Text:: Philosophy (Name) (Degree) in Agricultural Economics presented on June 26, 1970 (Major) (Date) Title: A

An analysis of the population dynamics of selected avian species

Creator:: Henny, Charles J.
Abstract:: The impact that pesticides may have had on the mortality rates and productivity rates of non-game birds during the last 25 years was evaluated by studying the population dynamics of 16 species. A mathematical model showing the relationships between population parameters that yielded stable populations was developed. The information needed...
Resource Type:: Dissertation
Full Text:: requirements for a stable population and annual rate of change (increase or decrease) in population levels

A description of the processes and procedures used in the development of a merit-evaluation program for a middle-sized school district

Creator:: Tait, George James
Abstract:: This was an historical study which described the procedures used by a thirteen-member committee in an attempt to develop a merit-evaluation program for a middle-sized school district in Oregon. A random sample of 33.5% of the certificated staff of School District 9 were interviewed in May, 1969. The results of...
Resource Type:: Dissertation
Full Text:: GEORGE JAMES TAIT for the DOCTOR OF EDUCATION (Name) (Degree) in EDUCATION presented on July 24, 1970

A study of the effects of various characteristics upon enrollee achievement in the Neighborhood Youth Corps program operating in the rural counties of Oregon

Creator:: Sparks, Lanny, 1941-
Abstract:: Purpose of the Study The purpose of this study was (1) to identify the educational and socio-economic characteristics of enrollees in the In-School Neighborhood Youth Corps Program and (2) to determine those educational and socio-economic characteristics that would predict potential achievement in the In-School Neighborhood Youth Corps Program. Procedures A...
Resource Type:: Dissertation
Full Text:: enrollee were obtained from their application, termination and monthly time report forms. Educational

Farm machinery merchandising : farmer and dealer preferences concerning used equipment guarantees, farm service centers and information services

Creator:: Singh, Ashok K.
Abstract:: Many changes have been taking place in Oregon's agriculture. Average size of farms has increased. The trend is toward fewer but larger, highly mechanized farms, leading to changed demand for farm machinery and consequently changes in farm machinery firms to meet the changing demands of farmers. In general, the research...
Resource Type:: Dissertation
Full Text:: Age 26 Farmers 27 Annual Farm Sales 2 7 Farmer-Dealer Response Comparison 28 Dealers Should

The role of soil-water depletion and plant-moisture stress in soil classification and cambial activity of Douglas-fir

Creator:: Thomas, Byron R.
Abstract:: Relationships between soil-water stress and plant-moisture stress were studied with respect to soil classification and cambial activity in Douglas-fir. The study sites were forested with Douglas-fir and located in McDonald Forest and near Marys Peak in the Oregon Coast Range. Soil-water depletion was followed by the use of gypsum blocks...
Resource Type:: Dissertation
Full Text:: University in partial fulfillment of the requirements for the degree of Doctor of Philosophy June 1970

ScholarsArchive@OSU

Growth characteristics and site potentials of perennial grass species

Sex and life stage sensitivity of rainbow trout to xenoestrogens

Tactics of Pacific Northwest albacore fishermen - 1968, 1969, 1970

Temperature preconditioning of ryegrass (Lolium sp.) seed dormancy

A quadratic programming algorithm for deriving efficient farm plans in a risk setting

An analysis of the population dynamics of selected avian species

A description of the processes and procedures used in the development of a merit-evaluation program for a middle-sized school district

A study of the effects of various characteristics upon enrollee achievement in the Neighborhood Youth Corps program operating in the rural counties of Oregon

Farm machinery merchandising : farmer and dealer preferences concerning used equipment guarantees, farm service centers and information services

The role of soil-water depletion and plant-moisture stress in soil classification and cambial activity of Douglas-fir

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