Life Sciences Commons^™

Onion Pollination As Affected By Different Levels Of Pollinator Activity, George E. Bohart, William P. Nye, L. R. Hawthorn

All PIRU Publications

No abstract provided.

World Developments In Increased Forest Resources For The Pulp And Paper Industry, J. L. Keays

Aspen Bibliography

The present report reviews major trends in utilization of world forest resources for conversion to fiber products: pulp, paper, paperboard, composition board and fibreboard. Trends are reviewed from 1930 to the present and cover anticipated extension of these trends to the year 2000.

The Influence Of Trace Elements On Anemia, Yung-Fun Wang

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

The fact that anemias constitute an important problem of public health has been realized only comparatively recently. When field surveys made in different countries before and after World War II had collected a great deal of information on dietary habits, food consumption levels, and nutritional status , it became more apparent that mild, moderate, and even severe anemic states existed in different communities. As was to be expected, anemia occurred more frequently in the malnourished people in the developing countries and the vulnerable groups of the population were the most affected (FAO/WHO Report, 1966).

Teaching Plans In Range Management For Utah High School Vocational Agricultural Programs, Jack A. Soper

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

Although several course of study outlines have been prepared to cover the subject of range management, the author has been unable to use them too effectively in teaching this important phase of vocational agriculture. Other teachers of vocational agriculture have expressed similar experiences and in group meetings have indicated a need for more teaching materials in range management and other important areas of agriculture.

Panguitch, Utah, where the author teaches, is located in Garfield County in the heart of a vast range area . There is a vital need for youth ar.d adults in the area to understand the important …

Factors Influencing The Performance Of Bromoxynil 4(2,4-Db), Or A Companion Crop For Weed Control In Seedling Alfalfa, Ferrin D. Leavitt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Some of the factors influencing the performance of bromoxynil, 4(2,4-DB), or a companion crop for weed control in seedling alfalfa were studied in the greenhouse and at field locations in Farmington and Logan, Utah. The effect of application rate, stage of growth, temperature, and soil moisture on the phytotoxicity of bromoxynil and 4(2,4-DB) to alfalfa and weeds were studied.

Alfalfa yields were increased by 4(2,4-DB) at all rates and stages of application. All rates and stages of bromoxynil treatment except the one-fourth pound per acre three to four trifoliate application resulted in alfalfa yields below that of the control.

The …

An Analysis Of The Competitive Position Of Cattle Finishing In Utah And Selected Western States, 1969, Stephen L. Olsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Utah's cattle feeding industry was described by using both secondary and primary data. The primary data were collected through use of a personal interview survey.

Primary data were also collected in Idaho, while secondary data were used for Arizona, California and Colorado.

Intrastate analysis of feeding costs showed definite cost savings were achieved in all states through economies of size.

Interstate analysis of feeding costs showed Utah's larger capacity feedlots to be very competitive with larger capacity lots in other states.

1968 prices for both slaughter and feeder cattle were computed for each state. Prices in Utah were slightly lower …

A Study Of Insects Attacking Pinus Flexilis James Cones In Cache National Forest, Thomas Evan Nebeker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Six species of insects were found attacking limber pine cones from July 26, 1968, through October 4, 1969, in Cache National Forest. The three species considered of major importance are: Conophthorus flexilis Hopkins, Dioryctria abietella (D. & S.), and D. sp. near or disclusa Heinrich. The three minor species encountered are; Bradysia sp., Trogoderma parabile Beal, and Asynapta keeni (Foote). In addition to the major and minor cone pests three parasites, Apanteles sp. prob. starki Mason, Elacherus sp., and Hypopteromalus percussor Girault were found associated with the cone pests.

C. flexilis, which completely destroys the cone, was ranked as …

The Development Of The Endogenous Stages Of Eimeria Ninakohlyakimovae (Yakimoff And Rastegaieff, 1930) In Domestic Sheep, Richard S. Wacha

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Forty-five mixed breed lambs, 1 to 4 months of age, were used to study the patent period and endogenous stages in the life cycle of Eimeria ninakohlyakimovae. The lambs were inoculated with oocysts of this species and killed at daily intervals from 1 through 14 days after inoculation. From all lambs of the study sections of intestinal tissue were prepared by routine methods for histological examination.

E. ninakohlyakimovaewas observed to have 2 generations of schizonts in its endogenous development. Mature, first-generation schizonts had an average diameter of about 290 μ and had many thousands of merozoites, averaging 11.9 …

Raffinose In The Sugarbeet (Beta Vulgaris): I. Biosynthesis And Degradation In The Root; Ii. Hydrolysis In Molasses With Sweet Almond Emulsin, Te-Chao Chuang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

PART I

The precursors for the biosynthesis of raffinose in sugarbeets were studied.

An enzyme preparation was obtained from the sugarbeet (Beta vulgaris) root. Incubation of this enzyme with (X-galactose-1-phosphate, Uridine triphosphate (UTP), Adenosine triphosphate (ATP), Magnesium chloride (MgCl₂), and L- cysteine at pH 5, 10°c for 6 hours formed a compound which was identified as raffinose by a hydrolysis method and thin- layer chromatography. The same result was obtained when Uridinediphosphate (UDP)-galactose was incubated with sucrose, ATP , MgCl₂, and L- cysteine in the presence of the beet enzyme preparation. These reactions suggested …

The Effects Of Sources And Levels Of Vitamin A And D On Some Aspects Of Sulfur Metabolism, Akbar Malekpour

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two trials were conducted using 48 infant pigs of both sexes. Pigs were taken from the sow when three to seven days old and placed in wire-bottomed metal cages by pairs. Animals in the first trial received synthetic diets containing 100 or 1000 international units of ergocalciferol and 1000 or 4000 international units of retinyl acetate or four or sixteen milligrams of beta carotene per kilogram of feed. Baby pigs in the second trial received the same synthetic diet plus 1000 international units of ergocalciferol (D₂) or cholecalciferol (D₃) and 2000 international units of vitamin A …

Effects Of Sublethal, Cerebral X-Irradiation On Movement And Home-Range Patterns Of Black-Tailed Jackrabbits, Lewis Nelson Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Effects of sublethal, cerebral irradiation on movement and home-range patterns of black-tailed jackrabbits were studied in Curlew Valley, Utah, using radio-telemetry. Irradiation of 70 captive animals indicated that the LD₅₀₍₃₀₎ was between 5,556 and 6,200 roentgens.

Nine wild, free-living experimentals were trapped in desert terrain, irradiated, transmittered, and released at the capture sites. Seven wild controls were treated similarly but were not irradiated. The field-irradiation dosage was 5,000 roentgens.

Tracking accuracy was determined by telemetering transmitters at fixed locations. Mean hourly movement was measured within 20-30 percent error and home ranges were measured with an error of less than …

An Economic Analysis Of Selected Livestock Enterprises In Relation To The Available Feed Supplies, Utah, 1968, Ronald Jay Woolf

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study was made to determine the relative profitability and competitive position of cattle fattening, lamb fattening, and milk production in the state of Utah for 1968.

Production costs of cattle fattening ranged from $22.10 to $32.28 per hundred pounds of gain. Net return amounted to $19.65 per head. Lamb fattening costs ranged from $24.25 to $29.76 per hundred pounds of gain. Net return from lamb feeding operations averaged $2.06 per head. Cost of producing milk amounted to $4.90 per hundredweight while net return amounted to $.61 per hundredweight.

Measure of profitability used in comparison included $100 worth of feed …

Economies Of Size Of Cattle Ranches And Wheat Farms And A Comparison Of Management Alternatives For Marginal Cropland In Utah, John P. Workman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Five long-run average cost curves were derived from questionnaire and interview data by connecting points corresponding to the per unit production costs and levels of beef output for four cattle ranch sizes (50, 150, 300, and 500 head of breeding cows). Analysis of the long-run average cost curves in combination with the 1968 weighted Utah beef price revealed that all four ranch sizes studied are capable of meeting cash costs. If the goal of the ranch operator is to meet both cash costs and depreciation, a cattle ranch supporting 105 breeding cows is the minimum size necessary. If provision is …

Seed Response Under Snow On A Subalpine Range In Central Utah, Alvin T. Bleak

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The response of grass, forb, and shrub seeds to the subalpine environment during the fall and under winter snow and under laboratory conditions at 20/28 C was observed for 3 consecutive years at an elevation of about 3000m on the Wasatch Plateau in central Utah.

Seeds in nylon sleeves were planted under 2 cm of soil before snowfall. Under snow plantings were made directly on the soil surface and under 2 cm of soil. The seeds planted before snowfall were removed each year on four occasions: when under snow plantings were made, after snow depth exceeded 130 cm (deep snow), …

Changes In The Market Structure Of The Grocery Retailing Industry Of Four Selected Utah Retail Selling Areas, 1960-1969, Michael H. Salsibury

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An analysis of four Utah retail selling areas was made to determine the changes in the market structure of the retail grocery industry of these markets. The study markets were Logan, Ogden, Salt Lake, and Provo-Orem. This study was an ex tension of the National Commission Food Marketing study of the retail food marketing industry.

The major changes observed in the study markets were increasing population, dollar food sales, supermarket saturation levels and concentration ratios. The number of retail food outlets was decreasing. The barriers to entry in the study markets increased during the study period.

There was substantial economic …

An Investigation Of The Mode Of Action Of 2-Chloro-N-Isopropylacetanilide, Nirmal S. Dhillon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Corn (Zea mays L.) seedlings possessed a high degree of tolerance to growth inhibitory effects of pre-emergent application of 2-chloro-N-isopropylacetanilide (propachlor), squash (Cucurbita maxima Duchesne) was intermediate in its response to the herbicide followed by oats (Avena sativa L.), lambsquarters (Chenopodium album L.) and redroot (Amaranthus retroflexus L.). Root growth was more severely retarded by lower concentrations of propachlor than was stem development.

Propachlor inhibited cell division in onion (Allium cepa L.) root tips. Aberrations in the mitotic behavior, such as contraction of chromosomes, was also induced. Cell elongation, in particular auxin …

The Development Of A Prediction System For The Occurrence Of Law Violations On The Ogden Ranger District, Weber County, Cache National Forest, Utah, John Henry Harris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to develop a prediction system for the occurrence of law violations on the Ogden Ranger District, Weber County, Cache National Forest, Utah, whereby the existing manpower and equipment may be used as effectively as possible.

In an attempt to develop the prediction system, 13 variables were chosen that were felt to be related to the occurrence of law violations. These variables consisted on nine weather variables and four use related variables, Of the original 13 variables, 12 variables were significant. The most significant variables that accounted for the greatest portion of the variability …

An Evaluation Of Factors Affecting Establishment And Survival Of Russian Wildrye (Elymus Junceus Fisch.) On Foothill Ranges In Utah, Dale Lynn Drawe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Several factors affecting establishment and survival of Russian wildrye were studied in the greenhouse and in the field.

Greenhouse studies conducted at Utah State University examined (1) the effects of competition on vigor and production of Russian wildrye, (2) moisture use by Russian wildrye and four weeds, and (3) effects of moisture level on emergence and seedling vigor.

During 1967 and 1969 at Tintic Valley field experiments were initiated to study effects on germination and seedling establishment of (1) seasons, (2) methods, and (3) intensities of seeding Russian wildrye. In 1968 and 1969 studies were made of phenology and root …

An Empirical Analysis Of Demand Interrelationships: An Application To Selected Agricultural Commodities In Venezuela, Hector Luis Mata Brito

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to develop demand equations at retail for selected Venezuelan food commodities. Commodities included for analysis were rice, refined sugar, crude sugar, flour, potatoes, beef, pork, black beans, corn, and powdered milk.

The basic statistical technique employed in the analysis was least squares multiple regression. Although several mathematical forms for these demand equations were evaluated, a log-log transform was found to be most useful. Independent variables included own price, prices of substitutes and complements, time and income. Observations were taken from Venezuelan time series data over the period 1945-1965.

Development of these basic demand …

Seasonal Utilization Of Sago Pondweed By Waterfowl At Bear River Migratory Bird Refuge, Utah, Michael R. Sterling

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Seasonal utilization of sago pondweed (Potamogeton pectinatus L.) by waterfowl was studied at Bear River Miqratory Bird Refuge by comparing amounts of sago production on a series of plots on Unit Four. One plot was available to carp and waterfowl; one only to carp; and one available to neither.

The cage used to eliminate carp and waterfowl use of a plot caused a significant increase in sago production. The increase was attributed to less turbidity and less wind and wave action within the cage.

Carp distribution was limited to deep-water portions of Unit Four, a small area, and …

A Study Of Root Biomass In An Engeimann Spruce-Subalpine Fir Stand In Northern Utah, Larry O. Gadt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Biomass of roots in the top 6 inches of soil profile was measured . This weight was then used in a stepwise multiple regression to test correlations between root biomass and above ground merisurational parameters.

Total biomass of all roots was 9822 ± 2810 pounds per acre oven dry. Spruce roots weighed 4417 ± 997 pounds per acre; of this spruce roots less than 0.125 inch diameter weighed 2023 ± 347 pounds per acre and biomass of spruce roots greater than 0.125 inch diameter was 2394 ± 8S3 pounds per acre. Total fir roots weighed Sl56 ± 2687 pounds per …

The Effects Of Formaldehyde On The Frequency Of Reversion Of The White-Ivory Mutant Of Drosophila Melanogaster, Ruth Ellen D. Wood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study is an analysis of the effects of formaldehyde, a chemical which is both recombinogenic and mutagenic, on white-ivory (wⁱ) a highly mutable allele of the white locus of Drosophila. Formaldehyde is shown to significantly increase the reversion frequency of wⁱ. The results of this investigation differ from earlier observations in three respects: (1) there is a positive correlation between RNA (ribonucleic acid) concentration and reversion frequency in the presence of formaldehyde, but reversion does not appear to be totally RNA dependent; (2) female germ cells are more sensitive than those of the male; …

Effects Of Controlled Atmosphere Storage On Specific Biochemical Changes In Apricot And Peach Fruits, Bartley Norman Wankier

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of controlled atmosphere storage vs conventional refrigerated storage on the metabolism of Moorpark and Large Early Montgamet apricot and Elberta peach fruits were studied. The controlled atmospheres studied were 0.0 percent CO₂-5.0 percent O₂; 2.5 percent CO₂-5.0 percent O₂; 5.0 percent CO₂-2.5 percent O₂; 7.5 percent CO₂-5.0 percent O₂; as compared to conventional refrigerated storage. Nitrogen percent was assumed to be the difference between the total CO₂ and O₂ content minus 100.

Fruits were periodically removed from the storage and …

Effects Of Water Hardness On Processed Quality Of Carrots, Sweet Cherries, And Apricots, Jack C. Chiang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Honey Sweet carrots were canned with Ethyienediamine tetracetic acid (CaNa₂EDTA) and Sodium hexametaphosphate (Ha-HMP) at five different water hardness (0 , 20, 40, 80, 160 ppm of calcium and 20 of magnesium) , then stored at temperatures of 70 and 100 F. Evaluations were made at sixty-day i intervals for six months. Firmness and color degradation decreased significantly when water hardness or storage time increased. Under storage at 100 F and 0 hardness of water, the decrease of color and firmness was constantly accelerated.

When hard water (above 80 ppm or below 40 ppm) was used for …

Drift Of Oligophlebodes Sigma And Baetis Bicaudatus In A Mountain Stream, William Dean Pearson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this study was to clarify the relationships between drift rates, population density, production rates, key environmental factors, and movements of adults within two populations of stream insects (a caddisfly--Oligophlebodes sigma and a mayfly--Baetis bicaudatus).

Samples of benthic invertebrates (424 total) were collected every 28 days at four stations on Temple Fork of the Logan River, Utah, from October, 1967 to September, 1969. Samples of drift invertebrates (181 total) were collected every 14 days at three stations on Temple Fork during the same period. During summer months (June-September) a day and a night drift sample …

Stomach Capacity, Digestion Rate, And 24-Hour Consumption Rate For The Bear Lake Sculpin (Cottus Extensus), Joseph H. Williamson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A curvilinear regression model was used to determine an expected stomach capacity for any size Bear Lake sculpin with a standard length between 4-9.5 centimeters. Stomach contents were then expressed as a percent fullness and the change in percent fullness with time intervals was used to compute an instantaneous digestion rate. The instantaneous consumption rate was computed by the formula C=log P₁ - log P₀ +d, where C = instantaneous consumption rate. The amount of food consumed during a time interval was computed from the formula I_t=C_tS_t, where I_t=amount of …

Growth Of Eimeria Alabamensis From Cattle In Vitro And The Changes In Fine Structure Associated With Schizogony, J. Robert Sampson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Monolayer primary cultures of cells from bovine embryonic intestine (BEint), kidney (BEK), spleen (BES), and thyroid (BET) and cell line cultures of embryonic bovine trachea ( EBTr) and synovium (BESy)as well as established cell line cultures of Madin-Darby bovine kidney (MDBK), human intestine (Int 407), and Syrian hamster kidney (BHK-21) were inoculated with freshly excysted sporozoites of Eimeria alabamensis and observed for 4 days. Sporozoites penetrated all cell types during the first 24 hours in culture. Numerous intracellular sporozoites, trophozoites, and binucleate schizonts were seen in all cell cultures except Int 407. The best development occurred in BES and MDBK …

Development Of A Whey-Based Lactic Culture Medium Capable Of Bacteriophage Inhibition, Chao Tung Cheng

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A whey product has been formulated for use as a lactic starter medium. Phosphate-treated whey medium (PWM) has been shown to support growth of lactic cultures and prevent phage proliferation. Comparisons were made of a commercial phage inhibitory medium (PIM), reconstituted non-fat dry milk (NDM) and PWM. PWM inhibited all phages tested and stimulated starter growth. PWM was not as stimulating as PIM but was better than NDM. Good Cheddar cheese has been made using PWM. PWM is more economical than PIM but NDM is the most economical one if cheese yield is considered.

On The Population Ecology Of Uinta Ground Squirrels, Spencer R. Amend

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A marked population of Spermophilus armatus averaging 529 individuals per year was studied for two and a half seasons on a 22-acre tract in northern Utah. The average date of emergence from hibernation of the first squirrel was 9 April. Mating occurred as soon as animals emerged from hibernation. The average date of appearance of the first litter was 31 May. Emergence sizes of litters were from 5.2 for yearling females to 6.3 for adult females. Few instances of predation were observed. Age and sex ratios varied throughout the season and for different portions of the study area. The population …

A Mesoscale Radiation Study Of The Cache Valley, Nolasco G. Baldazo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The radiation climate of Cache Valley was established from the continuous recordings of global and diffuse sky radiation at Utah State University campus from June 1968 to July 1969 and August 1968 to July 1969, respectively. The influence of topographic features during summer and winter conditions at seven representative locations running on an east-west direction across the valley were determined by making short term measurements on clear days.

A comparison of the clear day average global radiation on approximate dates of the same solar declination shows higher values during late winter and spring than the values during late summer and …