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Chemical Composition And Acceptability Of Rain Damaged, Field Dried Alfalfa Hay, Cesar Augusto Araque H.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Water was applied to swaths of cut alfalfa forage with oscillating sprinklers to stimulate rain damage to field drying alfalfa hay to determine the changes in chemical composition, loss of yield, and acceptability of rain damaged hay to sheep. An additional objective was to develop models to estimate yield losses form experimental hay. The experimental hay was prepared with a 2x2x4x4x2 factorial design. The factors were two different cuttings (July and September), two width of swath (3.05 m and 4.27 m), four times of applying artificial rain (3h, 8h, 13h, and 24h after cutting), four levels of artificial rain (no …

Risk In Production, Mamadou Dian Diallo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Most production activities undertaken involve a certain degree of risk. Agricultural production is particularly risky since it is susceptible to the physical vagaries of nature and all economic and social variations. For most countries, agriculture is an important and vital sector where production decisions are made under risk. Hence, decision making under risk requires careful analysis and represents an important area of study.

The present research has been directed to advance our knowledge about the consequences of risk, and the behavior toward risk in the organization of production, particularly agricultural production. This objective is achieved by a review of risk …

Effects Of 3, 5, 6-Trichloro-2-Pyridinol On Thyroid Function, Charles Franklin Luke

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

3,5,6-trichloro-2-pyridinol, when administered in the diet, increases the feed efficiency (the ratio of weight gain to feed consumed) in various species of domestic animals and also appears to be retained in the liver at low concentrations, possibly by binding to a specific macromolecule. Because of its structural similarities to the outer ring of the thyroid hormones, trichloropyridinol and three structural analogs (2,4,5-trichlorophenol, 4-bromo-2,5-dichlorophenol, or 4-iodo-2,5-dichlorophenol) were tested for ability to compete in vitro with 3,5,3'-triiodothyronine (T₃) for nuclear receptors specific for the thyroid hormones. All four of the halogenated compounds were found to be weakly competitive for the …

Vocal Behavior And Interactions Among Parents And Offspring In The American Dipper, Mary Kathleen Fite

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The American Dipper (Cinclus mexicanus), an inhabitant of rapidly flowing mountain streams, is an aquatic passerine whose vocalizations have previously been undescribed. This study examines the spectrographic characteristics and contexts of calls and song in a color-banded population of Dippers. Calls of adults are the Jih, Weep and Grawk calls; calls of nestlings and fledglings are the Chip and Beg calls. Adult Dippers have a limited number of call types which occupy a middle range of frequencies (3 to 6kHz) and have structural characteristics which enhance detection of vocal signals. Gradation is present between call types. Possible explanations …

The Value Of Microcomputers In Agriculture, John P. Gibney

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper was two-fold. To examine the hardware and software purchased, training taken, and benefit recieved by farmers recently purchasing micro computers and to demonstrate a systematic approach of evaluating software. Over five hundred farmers that use microcomputers were surveyed on farm size and type, personal and computer system characteristics, and perceived benefit from the computer. Farmers that use computers were found to be younger, have higher incomes and benefit more from their computer systems with time than averages for all farmers. The use of printers and/or modems appeared to be justified for all levels of income. …

Adjusting To Academic And Social Life At Utah State University: A Series Of Video Program Scripts For Chinese Students From Taiwan, The Republic Of China, Lu Chiang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study is to identify the major problems and solutions for Chinese students in their adjustment to academic and social life at Utah State University. The author intended to give Chinese students an orientation through a series of five video scripts which could be later produced into a series of five video programs.

The adjustment problems of Chinese students were determined by reviewing related literature and by surveying 50 Chinese students at Utah State University. The solutions to those problems were determined by interviewing 10 professors and faculty members on the campus of Utah State University.

According …

Unbalanced Analysis Of Variance Comparing Standard And Proposed Approximation Techniques For Estimating The Variance Components, James P. Pugsley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper considers the estimation of the components of variation for a two-factor unbalanced nested design and compares standard techniques with proposed approximation procedures. Current procedures are complicated and assume the unbalanced sample size to be fixed. This paper tests some simpler techniques, assuming sample sizes are random variables. Monte Carlo techniques were used to generate data for testing of these new procedures.

Time Course Of Enzyme Catalyzed Reactions: The Stoichiometry A --> P + Q, Tamra Tuttle

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The feasibility of using an integrated rate equation to analyze the kinetics of a second-order, enzyme-catalyzed reaction has been investigated. The inducible arginine decarboxylase from Escherichia coli B. was chosen for this study because it catalyzes an irreversible reaction with stoichiometry A --> P + Q, the simplest second order case. Values for five of the eight possible kinetic constants were determined from 21 time courses. Of the remaining three, the uncompetitive product inhibition constant for CO₂ was shown to be between 0 and 0.06, while the values of the competitive product inhibition for CO₂ and the uncompetitive …

Pullout Resistance Of Welded Wire Mats Embedded In Soil, Mark R. Nielsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Welded wire mesh has been used in the past as soil reinforcement in the construction of reinforced soil embankments. Involved in the design of these embankments is the external and internal stability. The internal stability has two failure mechanisms; tension failure and pullout failure of the welded wire mesh.

This paper presents the results of laboratory tests on different sizes of welded wire mats embedded in different types of soils. These tests were performed on mats that are much larger than in previous tests. These tests measured the pullout resistance as a function of the number of embedded wires, the …

Initial Assessment Of The Introduction Of Spottail Shiner (Notropis Hudsonius) And Delta Smelt (Hypomesus Transpacificus) Into Willard Bay Reservoir, Utah., Thomas E. Sommerfeldt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Spottail shiner (Notropis hudsonius) and delta smelt (Hypomesus transpacificus) were introduced into Willard Reservoir to improve the forage base for walleye (Stizostedion vitreum vitreum) and black crappie (Pomoxis nigromaculatus). Spottail shiners were stocked in early spring in 1981, 1982, and 1983. Hauling mortality was generally great and an estimated 34,500 live fish were stocked in the 3-year period. Spottail shiner reproduction occurred each year of stocking. Delta smelt were introduced in 1982 with the stocking of 15,000 adult spawning fish. Stocking survival was estimated at 99%. Freshly spawned eggs were also obtained …

Seed Reserves In Stockpiled Topsoil On A Coal Mine Near Kemmerer, Wyoming, Cynthia K. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objectives of this study were to determine how seed reserves varied with depth in topsoil stockpiles and to evaluate the effect of length of time of storage on the number of viable seeds and number of species of seeds.

Soil samples were taken from five topsoil piles representing zero to three years of storage on the Elkol-Sorenson mine near Kemmerer in southwestern Wyoming. Seeds were extracted using flotation/separation methods and were tested for viability using 2,3,5-triphenyl tetrazolium chloride solution. Data were analyzed using nonparametric statistical tests.

Overall density of seeds in topsoil piles was low. No relationship was found …

Comparisons Of Snow Deposition, Soil Temperature, Matric Potential And Quasi-Friction Velocity Between A Windward Site And A Lee Shelter In A Cold Desert, Harvey L. Neuber

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Regimes of snow depth, soil temperature, soil matric potential and quasi-friction velocity in a windward site and a lee shelter were examined. The differences were analyzed from a biological perspective to characterize each location in terms of site favorability to plant growth. The chronology of wind and precipitation events was investigated.

Snow depth was measured with a system of stakes arranged around and in the interior of a rectangular plot encompassing both a windward site and a lee shelter. Soil temperature, soil matric potential and water potential were measured along a transect which originated in the windward site and terminated …

Effects Of Clearcutting On Forage Production, Quality And Decomposition In The Caatinga Woodland Of Northeast Brazil: Implications To Goat And Sheep Nutrition, Robert D. Kirmse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Clearing of trees from the so-called caatinga woodland that characterizes the vegetation of the semi-arid region of northeast Brazil offers possibilities for increasing forage production. This research analyzed the first-year effects of clearing caatinga on dry season forage for goats and sheep. In addition, factors affecting litter decomposition on cleared and uncleared caatinga were assessed to evaluate the viability of deferring grazing of forages during the wet season for use later in the dry season.

Removing the trees resulted in a sixfold increase in production of herbaceous vegetation, however, 88 percent of the increased yield on the cleared areas was …

Dynamics Of Arid-Land, Perennial Plant Populations With An Examination Of Potential Causal Agents, Henry George Gardiner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rigorous statistical examination of the population dynamics of a number of long-lived perennial plant species permitted an interpretation of changes in those populations and the establishment of potentially important causal agents. Survival and recruitment of six species from the mulga-zone rangelands of Western Australia varied across three climatically different periods following the removal of domestic livestock.

Two species' populations (Eragrostis xerophila and Maireana glomerifolia) had their rates of increase reduced by kangaroo and euro grazing. Both survival and recruitment of Eragrostis xerophila were reduced by this grazing while Maireana glomerifolia suffered reduced recruitment during all periods. These negative …

Plant Gas Exchange Of Two Bunchgrasses In Relation To Herbivory Tolerance, Robert S. Nowak

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The occurrence of compensatory photosynthesis was examined in the field during the spring for all foliage elements on two Agropyron bunchgrass species that differ in their evolutionary history of grazing pressure. Compensatory photosynthesis did occur in many individual foliage elements during at least part of their ontogeny. For both species, compensatory photosynthesis was related primarily to delayed leaf senescence and increased soluble protein concentrations, but not to an improvement in the water status of clipped plants. Photosynthetic water use efficiency and photosynthetic rates per unit soluble protein of foliage on partially defoliated plants were not increased following the clipping treatments. …

Pheasant Habitat Improvement Through Multiple Land Use Planning On Cache Valley Farmland, Shannon B. Heath

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

In Utah, the number of farms has been steadily decreasing since the 1930's while farm size has grown and mechanization increased (Utah Agricultural Statistics, 1981). The "family farm" is beginning to disappear as larger farms become more economical (McCorkle, Jr., 1981). Due primarily to this trend toward more intensive land use, habitat for the ring-necked pheasant (Phasianus colchicus) is on the decline (Kellert, 1981). In addition, changes which have occurred in crop production since 1950 have not favored pheasant production (Nish, 1973). It is of critical importance that attention be drawn to the conservation of pheasant habitat if the future …

The Utah Statesman, April 30, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 27, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 25, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 23, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 20, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 18, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 16, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Flood Insurance Study, City Of Cedar City, Utah, Iron County

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Cedar City, Iron County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert Cedar City to the regular program of flood insurance by the Federal Emergency Management Agency (FEMA). Local and regional planners will use this study in their efforts to promote sound flood plain management.

The Utah Statesman, April 13, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 11, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 9, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 6, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 4, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, April 2, 1984, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.