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Comparisons Of Phytoseiid Predator Populations In Sprayed And Unsprayed Apple Orchards In Cache Valley, Utah, Yeboa A. Dodoo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A comparative study of phytoseiid populations was made of two well-cultivated and regularly sprayed apple orchards with two unsprayed orchards in Cache Valley, northern Utah.

Two phytoseiid species, Typhlodromus mcgregori Chant and T. occidentalis Nesbitt were observed on the apple leaves, under the bark, and occasionally in the litter and soil. Amblyseius cucumeris (Oudemans) occurred in the soil and litter and occasionally under bark. T. mcgregori was dominant in the unsprayed orchards, and T. occidentalis in the sprayed.

Of the phytophagous mites, which served as food for the phytoseiids, the two-spotted mite, Tetranychus urticae Koch was dominant. Other phytophagous mites …

Effect Of Gibberellic Acid And Chilling On Nucleic Acids During Germination Of Dormant Peach Seed, Yuh-Nan Lin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study of nucleic acid changes influenced by gibberellic acid and chilling treatments in peach seed was performed in an attempt to reach a better understanding of the mechanism involved in breaking seed dormancy.

Gibberellic acid and the chilling treatment increased the RNA content. These two treatments which break dormancy also increased RNA, suggesting a similar mechanism involving RNA. Chilled seeds contained more RNA than did the gibberellic acid treated seeds.

DNA content remained unchanged regardless of treatment.

Dry seed had a greater ribonuclease activity than with soaked seeds. Enzyme changes did not correlate well with the RNA content in …

Consumer Attitudes Affecting The Use Of Fluid Milk Products In Metropolitan Salt Lake City, Wayne N. Monson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A survey of 360 respondents in metropolitan Salt Lake City was made to determine their attitudes about fluid milk products and the affect of these attitudes on consumption levels. The fluid milk products studied were regular whole milk, two percent milk, skim milk, and nonfat dry (powdered) milk.

The respondents had the most positive attitudes about regular whole milk. Their attitudes about the other three products were highest for those which most nearly resembled regular whole milk. The consumption levels of the four products followed the same pattern.

The respondents' attitudes about four attitude parameters affected their consumption levels. Those …

Distribution And Ecology Of The Desert Bighorn Sheep In Southeastern Utah, Lanny O. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In May 1965, the first investigation and research in the native desert bighorn sheep in Utah was undertaken. The study was centered in the White Canyon area, San Juan County, in southeastern Utah. Seven other areas along the Colorado River were found to have smaller reminant populations of desert bighorns.

The White Canyon population was determined to be between 124 and 144 desert bighorns (Ovis canadensis nelsoni), excluding lambs.

The desert bighorns in southeastern Utah return from surrounding range lands each year to the same areas, known as lambing grounds, to give birth to their lambs. Ewes under …

Protein And The Pill- A Pivotal Partnership, B. Delworth Gardner

Faculty Honor Lectures

Two fearsome possibilities preoccupy thoughtful men everywhere in the world. These worries are unique to our own age and time. Lord Russell puts it succinctly, "The world is faced, at the present day, with two antithetical dangers: (a) the human race may put an end to itself by a too lavish use of H bombs; and (b) the human population of our planet may increase to the point where only a starved and miserable existence is possible, except for a minority of powedul people."

Each of these dangers has its own characteristics, its own special perils, and its own possibilities …

Bulletin No. 472 - Nutritive Value Of Seasonal Ranges, C. Wayne Cook, Lorin E. Harris

UAES Bulletins

Considerable information has been presented on the nutritive value of domestic crops but little is known about the nutritive content of range forage. Such information is fundamental to the management of ranges for effective livestock production.

The shortage of suitable spring range in the Intermountain region has caused increased interest in seeding depleted foothill areas to supply more spring forage. Many native foothill ranges with established stands of perennial grasses sufficient to show rapid response to conservative use may be more economically developed through better management practices. In any event, knowledge of forage production, palatability, and nutritive value of both …

Utah Science Vol. 29 No. 1, March 1968

Utah Science

Seasonal forage use by pronghorn antelope in western Utah, Donald M. Beale and George W. Scotter 3

The fugue expands - bioclimatology - a practical science, Gaylen L. Ashcroft, E. Arlo Richardson, and Lois M. Cox 7

Meat consumption in Cache and Box Elder counties, 1965-66, Ellis W. Lamborn and W. Duane Evans 14

Wild oats may be foundation for high protein oats 16

Tall bluebell - an important forage plant on aspen range - in Utah, Veri B. Matthews 17

Combating rangeland cripplers, Wayne Binns, Richard F. Keeler, Lynn F. James, A. Earl Johnson, Kent R. Van Kampen, and …

Range Nutrition In An Arid Region, Lorin E. Harris

Faculty Honor Lectures

On the mountains, in the valleys, on the foothills and on the deserts of the Intermountain West grow millions of tons of vegetation. The chemical energy stored bv these plants is a potential source of useful energy for man. Some of the plant material has been used for fuel, other has been used as a source of lumber, chemicals, and paper, but the major part of this vast reservO'ir is useful to man because it is utilized by livestock. This native vegetation is grazed by livestock and they convert the plant energy to' high quality, desirable food energy for man.

General Catalog 1968, Correspondence, Utah State University

University Catalogs

General Catalog of 1968 Correspondence

Contains course descriptions, University college calendar, and college administration.

General Catalog 1968, Utah State University

University Catalogs

General Catalog of 1968

Contains course descriptions, University college calendar, and college administration.

Utah State University Commencement, 1968 – Main Campus, Utah State University

Commencement Programs

Seventy-Fifth Annual Commencement of Utah State University

Properties Of Soil Under Aspen And Herb Shrub Cover, R.K. Tew

Aspen Bibliography

No abstract provided.

General Catalog 1968, Graduate, Utah State University

University Catalogs

General Catalog of 1968 Graduate

Contains course descriptions, University college calendar, and college administration.

Utah Science Vol. 28 No. 4, December 1967

Utah Science

Heavy pigs benefit from protein supplements, Hyrum Steffen 111

Early triers of new food products - powerful consumers, H. Bruce Bylund and David L. Sanders 114

Effects of girdling and gibberellic acid treatments on Thompson Seedless grapes, J. LaMar Anderson and Don Huber 116

Time capsules fight insects 118

Sodium carbonate reseals stock ponds 118

Consumer sentiment and Utah's out•of-state visitor, Perry J. Brown and John D. Hunt 119

Plant scientist retires 120

Consumer response to use of turkey, Gerry Flake and Roice Anderson 121

Nature's unsung middlemen - bioclimatology, a practical science, Lois M. Cox, Gaylen l. Ashcroft, and …

Utah Science Vol. 28 No. 3, September 1967

Utah Science

Rain traps of steel, C. W. Lauritzen 79

Biological clock influences bees 81

Range resources and big game management, George W. Scotter 82

Meeting the protein needs of dairy animals, M. J. Anderson, R. C. Lamb, and G. E. Stoddard 84

USDA scientists identify avian leukosis virus 87

The original go power - bioclimatology - the practical science, by E. Arlo Richardson, Lois M. Cox and Gaylen Ashcroft 88

The effect of water application on soil tilth, Jack Keller 93

Sex hormones and the growth of nursing calves on high mountain ranges in Utah, Joseph T. Blake and Jay W. …

Utah Science Vol. 28 No. 2, June 1967

Utah Science

Bioclimatology - a practical science, Gaylon Ashcroft, E. Arlo Richardson and Lois M. Cox 35

Search is on for new protein-rich seed crops 38

Increased capacity through better distribution on mountain ranges, C. Wayne Cook 39

Contributions to research 42

Alfalfa weevil now found in 41 states 42

Good pastures are possible - even high and dry, Rex F. Nielson 43

Some insects love to eat only weeds 46

Uranium mill wastes as stream pollutants, William F. Sigler 47

Soil scientist, department head dies 49

Influence of sire and ration on differences in gross feed efficiency in dairy cattle, R. …

The Effects Of A Selective Membrane Filter Medium On Fecal Coliforms, Donald Jesse Mcgraw

Biology

A bacterium reported to be indicative of human (or mammalian) fecal pollution is Type I (fecal coliform) Escherichia coli. Although this type may be isolated by use of elevated temperature (44.5 C), primary isolation without enrichment is difficult. Direct study without primary enrichment is possible with mFC Medium (Difeo), however, routine work in this laboratory yields poor results when mFC medium is compared with the standard EC elevated temperature technique. Using three strains of Type I E. coli, this study attempted to determine some reasons for the low recovery in mFC medium. The test organisms, preadapted to 37 …

The Life And Poetry Of Francois Villon, Austin E. Fife

Faculty Honor Lectures

The highest hope of the teacher of literature is to illuminate life in the flame of experience : not in the sense th at hi story repeats itself, but rath er th at particul ar significance can be given to the here and now when it is experienced through minds with uniquely true sight.

One such mind is that of the fift eenth century French poet, Fran<;ois Villon. He sought out life with all his senses . He examined human experience with all his strength of vi sion, never once burying his head in the sands of wishful thinking because what he saw was beyond endurance. Though writing in the fourteen-hundreds he has been called "modern." We might say that he is great because his vi sion transcends time: th at he is "modern" because he is timeless . Perhaps this is because he pits the precious and fragile continuum of life again st the static nihili sm of death, than which even the most degraded life is preferable.

This lecture is not one for expert s on the fiftee nth-century with a special interest in Villon. R ather it is a literature teacher's effort to concentrate in one fifty-minute capsule the …

Seasonal, Diurnal And Species Variation In Forage Moisture Content In Relation To Site On Mountain Summer Range Of Northern Utah, Chaudhry Mohammad Sharif

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Practical assessments of range production and utilization are based on forage weight estimates. In preparing these estimates moisture content in green vegetation offers some problems. The moisture component is not likely to be constant for a given species. Diurnal, seasonal and site variability have been well illustrated for agronomic and tree species (Salisbury, 1848; Jenkins, 1879; Miller, 1917; Pearson, 1924; Watkins, 1940; Parker, 1951; Ackley, 1954; Werner, 1954; Zohary and Orshan, 1956; Slatyer, 1959; Kozlowaki, 1965 and Jame son, 1966). Since variability is also likely for range plants, computations made on green weights are apt to be fallacious. It is …

Heat Denaturation Of Serum Proteins In Skimmilk And Whey As Measured By The Harland-Ashworth Test, Lynn Verl Ogden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Milk serum proteins have been shown by other workers to be partially protected from heat denaturation by the presence of milk solids (8, 15, 16) and whole caseinate (14). This study revealed that some serum proteins (B-lactoglobulin), as shown by the Harland-Ashworth test (14, 17), were more readily denatured in skimmilk than in rennet whey. A comparison of the heat denaturation rate of serum proteins in whey as opposed to those in whey containing 2.5 percent isoelectric casein was also studied. A striking protection of serum proteins seemed apparent in the presence of isoelectric casein. However, it was learned that …

Determination Of Estrone, 17b-Estradiol And Estriol In Urine Of Young Adults, Shiao-Fan Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study was made of the urinary excretion of estrogens of healthy university students consuming self-selected diets living under home conditions (4 men and 5 women). Two 31-day test periods were used. During the two test periods, two meal patterns were used; three meals a day or two meals a day with no lunch. Weight was kept constant. Calories, protein, carbohydrate, and fat of their diets were calculated.

Urine specimens were collected twice a week, and additional samples were also collected on specified days for female subjects. Urinary estrogens were determined by using Brown's method (1955, 1957) with some modifications. …

Influence Of Phosphate Compounds On Certain Fungi And Preservative Effects Of The Compounds On Fresh Cherry Fruit (Prunus Cerasus, L.), William Sidney Coblentz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Studies were conducted using four phosphate compounds: sodium hexametaphosphate, sodium tripolyphosphate, sodium tetraphosphate, and tetrasodium pyrophosphate at 1, 5, and 10 per cent concentrations to ascertain their effects on fresh cherries, as well as their in vitro antimycotic effects against Botrytis sp., Penicillium expansum, and Rhizopus nigricans.

A. summary of the findings are as follows:

1. Sodium tetraphosphate appeared to be the most effective antimycotic compound used in this investigation. A 10 per cent concentration of sodium tetraphosphate appeared to be the most effective antimycotic compound used in this investigation. A 10 per cent concentration of sodium tetraphosphate inhibited …

Effect Of Large Doses Of Nicotinic Acid On The Lipid Composition Of Serum, Shu Hua Chen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although much information is available in which the cholesterol level and concentration of other lipids in serum have been studied, only limited data have been reported for normal human adults and concentrations of fatty acids composition of lipid classes in serum. In recent study in this laboratory, five male adults who were in good health served as experimental subjects. They were on a self-chosen diet and received a test dose of Nicospan (buffered nicotinic acid) of 2 gm per day for three weeks of a six-week test period. About 30 ml of venous blood were obtained twice weekly from each …

Lipid Composition Of Human Red Blood Cells And White Blood Cell-Platelets With And Without Administration Of Nicotinic Acid, Nuggehalli Narayan Tara

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Five normal, healthy, men (age 33-42) served as experimental subjects. The subjects were on self-chosen diets and received a test-dose of buffered nicotinic acid (Nico-Span in capsule form) of 2 gm daily for three weeks, from the second through the fourth weeks, of the six and one-half week test period. About 30 ml of venous blood was obtained twice weekly from each subject, after an overnight fast of at least 12 hours. Each subject collected a 24-hour urine sample of the day prior to the blood sampling and also kept a record of food eaten.

The blood was separated into …

Serum Lipid Components Of University Women During The Menstrual Cycle, Hih-Min Sang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Four healthy university women students (age 21-26) while on self-selected diets and living under normal living conditions served as experimental subjects in a study of changes of serum total lipids, distribution of lipid classes, and the fatty acid composition of lipid fractions during the menstrual cycle. Effect of meal frequency (2 meals vs 3 meals with no breakfast) was also included.

Total lipids were extracted from serum. Chemical determinations of total lipids, total and free cholesterols, and lipid phosphorous were made on these extracts. Concentration of cholesterol esters and phospholipids were calculated and triglycerides plus free fatty acids were calculated …

Venison Flavor: The Free Fatty Acid Content Of Fat From Lean Meat Tissue, Von T. Mendenhall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Millions of pounds of venison are harvested each year in the United States. Over 12,000,000 pounds of dressed venison are harvested during the regular season each year in the State of Utah. The hunters of venison contribute approximately 10 1/2 billion dollars to the economy of the state for licenses, lodging, transportation, and other expense of hunting. In many cases this source of meat is a significant part of the household meat supply. Venison is often wasted, however, because of its undesirable flavor. The lack of knowledge as to the causes of variation in venison flavor has prompted this study. …

Serum Alpha-Tocopherol, Cholesterol, And Total Lipid Values And Unsaturation Of Lipids In 33- To 60-Year Old Adults On Self-Selected Diets At Different Levels Of Polyunsaturated Fat, Marjorie Miner Christiansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The levels and weekly variations of certain lipid components were investigated in healthy adults, 33 to 60 years of age, on self-selected diets under home-living conditions with and without an increased proportion of polyunsaturated fats for a period of 26 weeks. Ten individuals served as controls and 16 were assigned to the experimental diet. Each of the groups contained an equal number of men and women. The experimental diet provided a ratio of polyunsaturated to saturated fatty acids of approximately one, with the substitution of vegetable oils for animal fats within the normal eating patterns of the participants. The control …

Effects Of Dehydration Processes With Special Reference To Microwave Irradiation On Selected Biochemical And Physical Changes In Apples (Pyrus Malus), Fredoon Shahin Nury

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many innovations have been attempted to shorten drying time or improve dehydration techniques for foods. Despite the recent advances in science and technology the bulk of dried fruit production throughout the world, over 1 1/2 billion tons (dry basis), is prepared by the energy of the sun (Copley and Van Arsdel, 1964). However, other techniques and processes for food dehydration and preservation are occupying more prominent positions in the overall production of dehydrated foods, particularly in the more advanced countries. Economics notwithstanding, it is readily apparent that dehydration as compared to sun-drying offers at least two main advantages. It is …

Amino Acids As Precursors Of Volatile Components In Tomato Fruit, Ming-Ho Yu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The composition of tomato fruit at nine different maturity stages was studied. The dry matter content decreased gradually, whereas the alcohol soluble material and non-protein nitrogen increased with ripening. Total nitrogen decreased up to the large green stage and then increased during ripening. Starch accumulated until nearly the large green stage and then diminished rapidly. Of the two components of starch, amylose decreased much faster than amylopectin, and the ratios of amylopectin and amylose thus increased during ripening. Among the amino acids, glutamic acid was present in an exceptionally high concentration, and its concentration doubled as the fruit ripened. A …

Comparative Effects Of Dehydration Processes On Physico-Chemical Changes In Fruits, Chang Yong Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Drying with the help of sun and wind is one of the oldest methods of food preservation known to man, but artificial drying, or dehydration, has been developed and used extensively only during the last two decades. The problem in dehydration is that the water content must be decreased sufficiently to maintain the stability of the product by retarding the rates of deteriorative biochemical, microbiological, and enzymatic reactions during subsequent storage. At the same time irreversible changes should not be brought about.