Life Sciences Commons^™

Bionomics Of Culex Tarsalis Coquillett In Utah County, Stanley K. Taylor

Theses and Dissertations

This paper presents information concerning the bionomics of Culex tarsalis Coquillett in Utah County. Observations indicate that rock piles and talus slides are typical hibernation sites. The spring emergence from hibernation occurred between 28 March and 7 April 1959. Larvae breed in a great variety of habitats, including street-gutters, animal tracks, marshes and waste water from irrigation systems. The peak population density for both larvae and adults occurred during the first week in August. Charts, graphs, drawings and photographs are used in the presentation of data.

Identification Of Larval Ticks Of The Genus Ixodes Known To Occur In Utah, Leland D. White

Theses and Dissertations

The purpose of this study is to present an analysis and key to the larvae of the nine species of Ixodes known to occur in Utah. These are I. kingi, I. muris, I. texanus, I. pacificus, I. spinipalpis, I. marmotae, I. ochotonoe, I angustus, and I. sculptus. Larvae from the first five of these nine species used in this study were reared in the laboratory by worked cited in the secion on Analysis of Species. those of the remaining four were identified on the basis of their presence with identifiable numphal and adult forms. Host specificity, although certainly variable with …

Resistance To And Transmission Of Witches' Broom And Comparative Yields Of Alfalfa Varieties In The Uintah Basin, Utah, David Val Glover

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa is the most important forage crop in Utah. It is of particular importance to the Uintah Basin, Utah area where alfalfa hay and seed production are major sources of agricultural income. This crop owes much of its popularity to the fact that it will normally produce large yields of good forage on land which is unsuited to more intensive cultivation. In many cases it is impractical to advocate disease control practices which involve extra labor or expense and as a result most diseases of alfalfa, if controlled at all, are controlled by the use of resistant varieties.

During the …

Motor Truck Transportation Of Cattle In Utah, Loren H. Grover

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The beef cattle industry in Utah is of major importance in the economy of the state. In terms of cash receipts it is the largest single agricultural enterprise. In 1957 cash receipts from the sale of cattle and calves amounted to $38,405,000. This figure represents approximately 70 percent of cash receipts from the sale of all meat animals. It comprises 33 percent of cash receipts from the sale of livestock and livestock products and 24 percent of total cash receipts from farm marketings (2).

The production of beef animals will continue to assume a position of importance in Utah's agriculture, …

The Selection Of Superior Alfalfa Varieties For Utah Conditions, Richard M. Taylor

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa plays an important part in Utah's economy. It is the major forage crop and occupies approximately 40 percent of all irrigated land in the state.

During the past most of the alfalfa varietal trials have been conducted in Cache Valley, which is not representative of conditions found throughout Utah. In fact, it would be impossible to select any one location for conducting tests where all insect, disease, and climatic conditions would be represented. In view of this it was felt that an attempt should be made to conduct varietal trials at several locations to permit the selection of varieties …

A Study Of The Clover Seed Chalcid Infestation Of Various Alfalfa Varieties In Utah, Reed Charles Bunker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the limiting factors associated with seed production of alfalfa and certain clovers is a small jet-black wasp commonly known as the clover seed chalcid, Bruchophagus gibbus (Boheman). In alfalfa seed producing areas this insect is often referred to as the alfalfa seed chalcid or the alfalfa seed chalcis-fly. In local areas of Utah, farmers often refer to this insect as simply "the fly."