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Host-Parasite Relationships Between Prunus Mahaleb And The Parasitic Nematodes Pratylenchus Neglectus And Meloidogyne Hapla, Bernard Al Tait

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Utah orchardists have encountered problems which they have needed to control for continued successful and economical fruit production. Some of these problems are diseases such as western-X virus, cytospora canker (Wadley, 1955) and codling moth (Davis, 1957). These diseases, because of their nature and severity, have received more attention than others.

Tularemia And Deer Flies In The Environs Of Utah Lake, Utah, Kaye B. Cox

Theses and Dissertations

Deer flies have been implicated as mechanical veotors of tularemia in Utah. Although infected flies heretofore have not been tound in nature, there is little doubt of their importance in transmitting tularemia to man. Two species present in this area, Chrysops discalis Williston and Chrysops noctifer Osten Sacken, have been shown experimentally to transmit the disease. The presence of deer flies in the environs of Utah Lake where tularemia is endemic oftera a potential health threat to man, and the expanding human population and development ot recreational facilities adjacent to the lake inorease this potential. Despite the taot that deer …

Amphibians And Reptiles Of Vigo County, Indiana, David Rubin

All-Inclusive List of Electronic Theses and Dissertations

Vigo County, Indiana is an extremely interesting area for herpetological studyo Its geographical location allows for the interplay of faunal elements from east, west, north, and south (Smith and minton, 1957) and its physiography permits investigation of the relations of terrain and glacial geology to herpetofaunal distribution. Blatchley (1891, 1899) published two papers on the amphibians and reptiles of the county and Allyn and Shockley (1938) reported on the county's salamandersa The present paper has the following objectives: to determine which species occur or have recently occurred in Vigo County; to determine amphibian and reptile distribution in the county; to …

Cytogenetic Evidence For The Specific Distinction Of An Alaskan Marmot, Marmota Broweri Hall And Gilmore (Mammalia: Sciuridae), Robert L. Rausch, Virginia R. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cytogenetic studies based upon somatic cells (bone marrow) have disclosed that the marmot hitherto designated Marmota caligata broweri Hall and Gilmore, occurring in the Brooks Range of Arctic Alaska, differs from M. c. caligata (Eschscholtz) in number of chromosomes (2n=36 as compared with 2n=42 in M. caligata) and in proportions of chromosomal types. Typical karyograms for the two species are presented. It is concluded that the Brooks Range marmot is specifically distinct from M. caligata, the applicable name being Marmota broweri Hall and Gilmore. Also determined were diploid chromosome numbers for two other Nearctic species of marmots, M. …

Saponin Content Of Lahontan And Du Puits Alfalfas, George Allan Taylor

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Primitive peoples have used saponins for many years to kill fish and as a detergent.

Seasonal Habits And Habitat Of The Ruffed Grouse In The Wellsville Mountains, Utah, Robert L. Phillips

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ruffed grouse (Bonasa umbellus incana) inhabits much of the deciduous woodland of northern and central Utah. Its distribution is confined mainly to the Wasatch and Uinta mountain ranges. It has been observed in willows (Salix spp.) at 5, 000 feet elevation and in Douglas-fir (Pseudotsuga menziesii) at 9,000 feet.

California Mastitis Test Scores Of Individual Quarters Compared With Composite Milk Samples And With Milk Leucocyte Counts, Joseph R. Quayle

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Udder inflammation, whether caused by bacterial, physical, or neurological means, usually results in the secretion of milk that is abnormal in character.

A Survey Of The State Of Utah For Areas Infested With The Stem Nematode Of Alfalfa, Dwayne R. Buxton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plant nematodes belong to a large group of invertebrates known as round worms, They derive their name from the Greek word "nema," meaning thread. In literature some authors refer to nematodes as nemas. In England and many parts of the United States, plant-parasitic nematodes are called eelworms.

While some damage to plants results from mechanical injury, salivary secretions injected by the nematode into the plant are usually the major cause of damage. Experiments conducted in the first part of the present century have demonstrated large differences in plant growth in soil infested with nematodes and soil freed of nematodes by …

Venison Flavor: Study Of Volatile Compounds In Cooked Deer Meat, Praful C. Vin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Venison meat has a characteristic flavor which is acceptable if mild but some venison has a strong and objectionable flavor. The subject is of practical importance where deer is hunted as sport and for food. Each year in the State of Utah, over 180,000 hunters go in search of deer and over 130,000 animals are killed. This contributes about 10 1/2 million dollars to the economy of the state from licenses, lodging, transportation and other expenses of hunting. The problem is not only important in Utah but also in the U.S.A. and other parts of the world where venison is …

Activation Of Prorennin At Low Ph Values, Nazar A. Shukri

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rennin is the main milk-clotting enzyme in the fourth stomach of young calves. This enzyme has been crystallized and studied by several workers such as Hankinson, Berridee, and Ernstrom, and found to be heterogeneous. It is a proteolytic enzyme, which exhibits its maximum activity on hemoglobin, bovine serum albumin, and casein in the region of pH 3.4 - 4.0. It has a specificity similar to, but narrower than, that of pepsin.

A Study Of 5-Fluorouracil: Its Effects And Mode Of Action In Drosophila Melanogaster, John B. Jenkins Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Investigations involving the fluorinated pyrimidine, 5-fluorouracil, and its effects on viruses, bacteria, plants and mammals, have brought to light the following facts: FU inhibits the growth of bacteria, plants and mammalian cells and it decreases the ability of certain viruses to produce progeny. In other words, FU is an antimetabolite that inhibits growth and/or reproduction. Two mechanisms have emerged from these studies to define the mode of action of FU. The first mechanism involves the incorporation of the compound into the RNA of the organism thus altering the base sequence and creating a non functional or damaging nucleic acid. The …

The Importance Of Farm Management In The Under-Developed Economics, Hardev Singh Dhaliwal

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

Throughout the history of mankind there always have been famines, disease, and poverty in some parts of the world, and this has been because of economic under - development to a great extent. For nearly a century after the publication of Adam Smith's "Wealth of Nations" in 1776, economic development was the main interest of economists . In the late nineteenth century, Europe, America, and Australia were developing rapidly and few people were interested in raising the incomes of Africans, Arabs, and Asians . Most of the countries in Africa and Asia were under European colonial rule, and being so, …

Agricultural Problems And Economic Growth In East Pakistan, Asad-Ud-Dowla Chowdhurry

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

Pakistan came into existence on August 14, 1947, by the partitioning of what was British India. The basis for the division was the desire of the Moslem population of India to form a sovereign state. Since the country was established in the sections of India which were predominantly Moslem, Pakistan emerged in the form of two blocks, East and West Pakistan. They are two provinces separated from each other by over 1000 miles.

Society Spots 150 Kinds Of Birds, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Bird Songs And Movements Give Animation To Spring Scenery, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Easter Eggs Linked With Ancient History, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Flycater Flies Coop Birds Dogged By Dogged Watchers, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Forestry Bulletin No. 7: Films And Filmstrips On Forestry, N. T. Samson

Forestry Bulletins No. 1-25, 1957-1972

A bibliography of film and filmstrips covering forestry studies.

Managing Change In The Livestock Industry Of South Dakota: Papers Presented At The Fourth Annual Agri-Business Day 1965, South Dakota Agricultural Experiment Station, Department Of Economics, South Dakota State University

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

It is appropriate that the annual agri-business day program address itself to the current status and future potential of South Dakota's largest industry, the meat animal business. The 1965 program is the fourth in a series designed to probe opportunities for increased economic development of human and physical resources in our state. If maximum development is to take place, we must study every resource, discuss it, and then determine how we might harness it to fit man's social, cultural, and economic goals. South Dakota State University is proud of its long tradition of helping individuals and groups solve problems. But …

South Dakota Farm And Home Research, Agricultural Experiment Station

South Dakota Farm and Home Research: 1949 -1998

Contents:
Alfalfa Leaf-Cutting Bee [p] 4
Interseeding Legumes in South Dakota Grasslands [p] 7
Weather Data From a Computer [p] 10
Cost of Marketing Farm Products [p] 14
Foam Back Fabrics [p] 17
Control of Cucumber Beetles [p] 18
Farm Credit [p] 20
Irrigating Field Corn in South Dakota [p] 23
Pasture Research Center [p] 26
Soybean-Sudan Pastures [p] 29

Profit Maximizing Farm Plans For Farms In Southeastern Nebraska: By Type And Size Of Farm, M. D. Skold, A. W. Epp, H. W. Hughes

Nebraska Agricultural Experiment Station: Historical Research Bulletins

There are many forces operating in today's agricultural economy which cause farmers to examine carefully their patterns of resource allocation. Rising production costs coupled with downward tendencies in product prices focuses attention on efficient patterns of resource allocation. Technical change and changing resource and product price relationships affect efficient resource allocation patterns. This study considers possible efficient farm organizations available to farmers in southeastern Nebraska with given resources. The study determines profit maximizing farm plans for farm classes with different complements of resources and at alternative product price levels. Both crop and livestock enterprises are considered. Investment activities that generate …

Louisiana Agriculture Magazine, Spring 1965, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Some Morphological And Histological Effects Of The Poison Of Lophopodella Carteri (Hyatt) On Young Ambystoma Opacum (Gravenhorst) And Carassius Auratus (Linnaeus), Eric Justin Collins

Master's Theses

Larvae of the marbled salamander, Ambystoma onscum, and the goldfish, Carassius auratus, were subjected to poi­ soning by homogenates of Lonhopodella carteri. Stock homogenates were prepared by grinding specimens of frozen L. carteri in a rotary blender and adding distilled water to give a 20 percent concentration (wt./vol.); the stock was used to prepare working solutions.

Homogenates from bryozoans collected in 1964 were approximately twice as poisonous as those from the 1963 col­ lection. It ls possible that chemical changes during stor­ age and bacterial action prior to freezing caused deterioration of the poisonous principle in the material from 1963. …

Automatic Solvent Exchanger, D. R. Viglierchio, Armand R. Maggenti

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A solvent delivery and removal system has been designed and developed such that solvent exchange in biological specimens and tissues can be effected automatically at ambient or above ambient temperatures. The operation may be programmed so that any series of solvents mutually soluble in sequence may be exchanged. For convenience in calibration and flexibility the system may be operated manually.

Nebraska Bird Review (April 1965) 33(2), Whole Issue

Nebraska Bird Review

Table of Contents

A Study of Nesting Dickcissels in Nebraska ......................... 22

Honorary Members-Leroy M. Gates ......................... 25

Miss Doris B. Gates ......................... 26

In Memoriam-Frederick Ira Day ......................... 26

Book Reviews ......................... 27

Wintering Sandhill Cranes in Lincoln County ......................... 28

1964 Christmas Count ......................... 29

Comments ......................... 32

Hybridization In Bird Life Exception, Not Usual Rule, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

1965 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International "Little I" Agricultural Exposition Catalogs

No abstract provided.

Bird Observers In Situation Similar To Thoreau's, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Bird Watchers Have Own Weather Ideas, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.

Front Matter, Vol. 6 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.