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Articles 7861 - 7890 of 7953
Full-Text Articles in Physical Sciences and Mathematics
The Influence Of Age On The Cation Exchange Capacity Of Plant Roots, Einard S. Haniuk
The Influence Of Age On The Cation Exchange Capacity Of Plant Roots, Einard S. Haniuk
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A yellowing which develops in some plants growing on naturally calcareous soils is called lime-induced chlorosis. The problem is complex, as indicated by Brown and Holmes (1956) and Porter and Thorne (1955). Species and varieties of plants differ in their iron requirements, susceptibility to lime- induced chlorosis, and inter acting soil f actors which affect iron supply (Thorne et al 1950). Chlorosis of plants does not appear, therefore, to stem from a common causative factor. At least a part of this difference has been found to be associated with the plant roots. Thus, through the use of resistant root stock …
The Effect Of Nutrient Levels In Nutrient Cultures On The Translocation Of Foliar Applied Nutrients, David D. Neher
The Effect Of Nutrient Levels In Nutrient Cultures On The Translocation Of Foliar Applied Nutrients, David D. Neher
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Since man first grew crops on calcareous soils he has probably been troubled with what we today call lime-induced chlorosis. This chlorosis has determined whether he grew certain desirable ornamentals or crops or whether he had to substitute others which were less desirable.
Lime-induced chlorosis is spread world wide. It has been reported in the vine and fruit growing regions of Europe, in the chernozem soils of Russia, and many other areas where the rainfall is relatively low and the soil is relatively high in calcium carbonate. In the United States it most frequently occurrs where the average annual rainfall …
Ferrilegoglobin As An Oxidizing Agent For Hydrazine, Donald B. Larson
Ferrilegoglobin As An Oxidizing Agent For Hydrazine, Donald B. Larson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The system in which atmospheric nitrogen succumbs to enter Nature's cycle has a yet proven evasive with respect to the actual chemical reactions. At present several types of systems are proposed but their chemical makeup is practically unknown.
Lethal Concentrations And Detoxification Time Of Toxaphene For Goldfish, Gambusia And Rainbow Trout, Gar W. Workman
Lethal Concentrations And Detoxification Time Of Toxaphene For Goldfish, Gambusia And Rainbow Trout, Gar W. Workman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In the past few years the Utah Fish and Game Department, as well as the fish and game departments of other states, has been spending fisheries money for fish eradication on both lakes and streams. The Utah Fish and Game Department recently suggested to the University that research be initiated on the subject of toxaphene as a fish poison. Consequently, a better insight into conditions that exist for a given water type could be developed.
Scs Natinoal Engineering Handbook: Section 15, Irrigation, Chapter 8--Irrigation Pumping Plants, Soil Conservation Service, Engineering Division, United States Department Of Agriculture
Scs Natinoal Engineering Handbook: Section 15, Irrigation, Chapter 8--Irrigation Pumping Plants, Soil Conservation Service, Engineering Division, United States Department Of Agriculture
All U.S. Government Documents (Utah Regional Depository)
Irrigation Pumping Plants describes the advantages and limitations of the different pumps used for irrigation pumping; also covers power requirements, costs, and design procedures. It is intended for use by Soil Conservation Service engineers providing assist3nce to individual farms or groups of farms.
Report Of Engineering Research With Recommendations For Strengthening The Program, Vaughn E. Hansen
Report Of Engineering Research With Recommendations For Strengthening The Program, Vaughn E. Hansen
Reports
Progress of Engineering Research: The growth initiated with the reorganization of the Engineering Experiment Station in 1957-58 has been stready and consistant through 1958-59. Every sign points to continued expansion through the coming year. This growth is shown in Table 1. The number of active projects this year has increased to nineteen, the funds allocated for Engineering research were $53,861 plus $17,826 to contract research, exclusive of approximately $75,000 in the Agricultural Experiment Station. The number of staff members engaged in research is now twelve. Contract research money has been obtained to finance four projects which were financed previously with …
The Importance Of Hydraulics Of Surface Irrigation, Vaughn E. Hansen
The Importance Of Hydraulics Of Surface Irrigation, Vaughn E. Hansen
Reports
Summary: Surface irrigation is a complex hydraulic phenomenon. The hydraulic elements involved in surface irrigation are listed and discussed. Relating these hydraulic elements is the key to efficient irrigation, good design, and permanent agriculture.
Geology Of The Southern Part Of Wellsville Mountain, Wasatch Range, Utah, Ronald H. Gelnett
Geology Of The Southern Part Of Wellsville Mountain, Wasatch Range, Utah, Ronald H. Gelnett
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Wellsville Mountain is 10 miles west of Logan, Utah, at the northern extremity of the Wasatch Range. Paleozoic rocks form a northeast-dipping homocline bounded in part by northwest-trending high-angle faults and cut by a series of northeast-trending high-angle faults. A major transverse fault, with a stratigraphic displacement of 4,500 feet, divides the mountain into two distinct blocks.
The rock units of the area are comparable to those of the Logan quadrangle immediately to the east. Pre-Cambrian rocks crop out in Box Elder Canyon, just east of Brigham City, and are overlain by at least 20,000 feet of northeast-dipping Paleozoic rocks …
Horizontal Movement Of Moisture In Soil, D. W. L. Read
Horizontal Movement Of Moisture In Soil, D. W. L. Read
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The movement of water in soils is of great importance to all of us but especially to agriculturalists. If it were not for this movement plants would not be able to survive in soil. If the moisture moves too freely in the soil insufficient water can be stored to supply plants during dry periods. The movement of water through soil may remove plant nutrients or accumulate salts in soil horizons.
The flow of water in soil has been studied extensively for many years. Water movement can occur in either saturated or unsaturated soil. Darcy's law can be used with a …
An Application Of A Thermodynamic Flow Equation To Water Movement In Unsaturated Soil, Brennan Derry Soane
An Application Of A Thermodynamic Flow Equation To Water Movement In Unsaturated Soil, Brennan Derry Soane
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The movement of water in soil presents many interesting problems to the research worker. It is also a subject which finds wide and important application in agriculture and several branches of engineering.
The object of this work was to examine the usefulness of a new equation of flow of water in unsaturated soil. If valid, this new approach may be able to eliminate some of the gaps in our present knowledge of the subject.
All soil lying above the capillary fringe of a water table is in the unsaturated state with respect to water. This means that in any macroscopic …
The Peltier Effect And Its Use For Measuring Relative Activity Of Soil Water, Hans C. Korven
The Peltier Effect And Its Use For Measuring Relative Activity Of Soil Water, Hans C. Korven
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Soil moisture measurement embraces two basic concepts, namely, water content and relative activity. The measurement of moisture content, either on a weight or volume basis, yields the amount or quantity of water in the soil. The measurement of relative activity or the energy required to remove unit of water is related to the availability of the soil moisture to the plant. The measurement of soil bulk density, irrigation efficiency, and the amount of water to apply in an irrigation are a few examples that require the use of the moisture content concept. Whereas the first concept determines the amount of …
Geology Of The Northern Part Of Wellsville Mountain, Northern Wasatch Range, Utah, Stanley S. Beus
Geology Of The Northern Part Of Wellsville Mountain, Northern Wasatch Range, Utah, Stanley S. Beus
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Wellsville Mountain forms the extreme northern end of the Wasatch Range in northern Utah. It lies at the western margin of the Middle Rocky Mountain province and is bordered by valleys of the Basin and Range province. Many geologic investigations have been made in this region. Much of the Wasatch Range has been studied and mapped as well as parts of the Bear River Range, east of Cache Valley, and the Malad Range which extends north from Wellsville Mountain; however, the geology of Wellsville Mountain has not been studied or mapped in detail. Some reconnaissance mapping has been done and …
The Worm Creek Quartzite Member Of The St. Charles Formation, Utah-Idaho, Anthon V. Haynie Jr.
The Worm Creek Quartzite Member Of The St. Charles Formation, Utah-Idaho, Anthon V. Haynie Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This report presents the results of a stratigraphic study of the Worm Creek quartzite, the basal member of the St. Charles formation of Upper Cambrian age. The member is present in the Bear River Range, the Malad Range, and the Promontory Range of Northern Utah and southeastern Idaho. The Worm Creek quartzite was differentiated as the basal unit of the St. Charles formation by Richardson (1913) and named for its occurrence in Worm Creek Canyon in the Bear River Range, Bear Lake County, Idaho.
A stratigraphic investigation of the Worm Creek quartzite, including thickness and lithologic changes, was made. Through …
Geology Of The East-Central Part Of The Malad Range, Idaho, Prapath Prammani
Geology Of The East-Central Part Of The Malad Range, Idaho, Prapath Prammani
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
During recent years geologic investigations have been made in various parts of northern Utah and southern Idaho. In the Cache Valley area. the Bear River Range which bounds the east side of the valley has been studied and mapped. On the west side of the valley, the Wellsville Mountain and the southern part of Malad Range have also been studied. Still, little is known about the east-central part of the Malad Range. The study of this area will give additional information to the over-all picture of the geology of the region. The purpose of this thesis is threefold. The first …
Relationship Of Bicarbonate Concentration Of Plant Tissue To That Of The Growth Media As A Factor In Chlorosis, Gary H. Carlsen
Relationship Of Bicarbonate Concentration Of Plant Tissue To That Of The Growth Media As A Factor In Chlorosis, Gary H. Carlsen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Throughout the years lime-induced chlorosis has contributed to untold economic losses. Although this disease has challenged the technical ingenuity of outstanding plant and soil scientists, the exact cause has never been determined; consequently, no preventative measures or permanent cures can, as yet, be recommended. This physiological malady, unchecked, continues its rampage in regions where the disease is prevalent.
The problem is of wide significance because calcareous soils are distributed throughout the world. It is of primary concern to us because the majority of the land of western United States is of this type. An estimated 500,000 acres of crops growing …
The Use Of Branchiostegal Rays To Determine Age Of Lake Trout Salvelinus Namaycush Walbaum, Ross Vivian Bulkley
The Use Of Branchiostegal Rays To Determine Age Of Lake Trout Salvelinus Namaycush Walbaum, Ross Vivian Bulkley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Any method used in aging fish must fulfill certain requirements to be satisfactory. If the method is inaccurate, naturally little reliance can be placed upon its use. If considerable study of the method and much practice are required before accurate readings can be obtained, the method will not come into widespread use. The requirements of an aging method, then are that it must be accurate and comparatively easy. The scale method for aging lake trout (Salvelinus namaycush Walbaum) unfortunately does not fulfill these requirements. It has always been difficult to tell the age of lake trout by the examination …
Description Of Range Lands Of Iran Range Problems In Iran Vegetation Of Nevada, Nasser Golesorkhi
Description Of Range Lands Of Iran Range Problems In Iran Vegetation Of Nevada, Nasser Golesorkhi
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Taming and husbandry of animals is undoubtedly the oldest industry in Iran. The productive range lands are one of the most important natural resources of the country.
Range Liverstock Nutrition And Its Importance In The Intermountain Region, C. Wayne Cook
Range Liverstock Nutrition And Its Importance In The Intermountain Region, C. Wayne Cook
Faculty Honor Lectures
It has been estimated that about 728 million acres or about 76 percent of the entire land area in the West is used for grazing (Stoddard and Smith 1956). In Utah about 93 percent of the land area or 48,900,000 acres is considered range land (Reuss and Blanch 1951). Although some of this range land is forested, a large area of it can be used only for grazing. Therefore, range livestock production is an important segment of western agriculture.
Before 19'00 most of the animals in the West grazed on the range all year. However, irrigation crop production has expanded …
Growth And Nutrition Of Plants As Affected By Different Osmotic Concentrations Of Calcium Chloride And Sodium Chloride In The Substrate, Mumtaz Ali Khan
Growth And Nutrition Of Plants As Affected By Different Osmotic Concentrations Of Calcium Chloride And Sodium Chloride In The Substrate, Mumtaz Ali Khan
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Considerable experimental evidence supports the concept that the growth of plants generally decreases progressively as the salt concentration of the substrate increases, but certain relationships between plant and substrate are still not fully understood. The chemistry of salt toxicity to plants involves many interactions both as to the quantity and kind of ions presented to the roots and those accumulated in the plants. Many plant species have shown sensitivity to excess accumulation of specific salts frequently encountered in saline soils. Thus Eaton (1942), Wadleigh, Hayward, and Ayers (1951) have shown most of the fruit trees to be susceptible to injury …
The Thermodynamics And Some Practical Aspects Of Zinc Adsorption On Calcite, Dolomite, And Calcian-Magnesite Minerals, Jerome J. Jurinak
The Thermodynamics And Some Practical Aspects Of Zinc Adsorption On Calcite, Dolomite, And Calcian-Magnesite Minerals, Jerome J. Jurinak
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Zinc is one of the essential elements required for the normal growth of plants. The total amount of zinc commonly occurring in soils is usually many times greater than that necessary to supply the needs of actively growing plants. The ability of the soil to "fix" zinc in form unavailable for plant use, however, has made the zinc deficiency disease an important plant nutrition problem in the major fruit and nut growing regions of the West. Fixation mechanisms which have been postulated as contributing to zinc deficiency include organic complexes, precipitation of insoluble inorganic salts, and strong zinc-clay intersections. It …
East Cache Project: Idaho And Utah, Bureau Of Reclamation; Region 4; United States
East Cache Project: Idaho And Utah, Bureau Of Reclamation; Region 4; United States
Elusive Documents
No abstract provided.
The Salt Lake Group In Cache Valley, Utah And Idaho, Robert D. Adamson
The Salt Lake Group In Cache Valley, Utah And Idaho, Robert D. Adamson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Fluvial and lacustrine sediments of great thickness accumulated in the intermountain basins of the western United States during Tertiary time. The Salt Lake group in northern Utah and parts of surrounding states is a conspicuous stratigraphic unit of these basins. The "beds of light color" in Morgan Valley in the Wasatch Mountains of northern Utah were named the "Salt Lake group" by Hayden (1869) because of similar occurrences in Salt Lake Valley and because he reasoned that the succession could be divided into formations. Similar rocks crop out in Ogden Valley, north of Morgan Valley, and in Cache Valley, Utah …
The Influence Of Soil Moisture Conditions On The Absorption Of Phosphorus By Plants From Calcareous Soils, T. J. Denman
The Influence Of Soil Moisture Conditions On The Absorption Of Phosphorus By Plants From Calcareous Soils, T. J. Denman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Phosphorus is one of the major plant nutrients secured from the soil. The object of many investigations has been to discover the nature of the processes by which the soil supplies phosphorus to plants, and to determine the influence of soil factors upon these processes. Although much knowledge has been gained, these processes and the effects of soil factors upon them are still not clearly defined.
One factor which profoundly affects plant growth is the amount and relative availability of soil moisture. The results of some investigations have suggested that this factor may also have considerable influence on the absorption …
A Management Study Of The Cache Elk Herd, Norman V. Hancock
A Management Study Of The Cache Elk Herd, Norman V. Hancock
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
American elk, by virtue of their distribution, were the most cosmopolitan members of the cervid family at the time of white settlement of North America. At this early date elk were present in every major region of what is now continental United States, as well as in northern Mexico. they likewise were abundant in upper and lower Canada, though records do Lot corroborate their presence too far north on the Atlantic coast. Although generally existent throughout the western states, elk were sparsely distributed in Nevada, southern Utah, and most of Arizona and New Mexico. Paucity of elk was also noted …
Great Salt Lake Diking Project, Large Plan, Hydrology And Quality Of Water Study, United States Department Of Interior, Bureau Of Reclamation
Great Salt Lake Diking Project, Large Plan, Hydrology And Quality Of Water Study, United States Department Of Interior, Bureau Of Reclamation
Elusive Documents
The purpose of this study was to determine the feasibility of diking a portion of the Great Salt Lake for purposes of using the fresh water for irrigation, industrial uses, and recreation. This study approached the problem only for a hydrologic and quality of water standpoint.
Report On Investigation Of Bear River System, Public Services
Report On Investigation Of Bear River System, Public Services
Elusive Documents
In October 1952 the U. S~ Public Health Service, under provisions of Public l.aw 845 (80th Congress) J prepared a "Report on Interstate Pollution in the Bear River Watershed," with the assistance of the coming, Idaho, and Utah state water pollution control authorities. Included in this report was a description of the area and waters involved, data on stream flows, water uses, pollution contributed, effects of pollution, and a discussion of the existing authority of the States of Wyoming, Idaho, and Utah for enforcement of pollution control.
Measurement Of Irrigation Water, Eldon M. Stock
Measurement Of Irrigation Water, Eldon M. Stock
Reports
Foreword: Although irrigation has been practiced in Utah for more than one hundred years, irrigation water still is being distributed to farmers with little or not thought about its measurement. A farmer would not think of buying or selling other farm commodities, such as hay, grain, beef cattle, or dairy products, without weighing or accurately measuring them, but at the same time he is often content to accept and pay for the irrigation water received with little or no knowledge as to the actual amount received, or whether or not he is receiving the amount he is entitled to. Measurement …
The Content Of Essential Amino Acids In 1950 Alfalfa Hay Grown In Utah Soil Treated With Different Fertilizers, Adriana Lanting Kunkel
The Content Of Essential Amino Acids In 1950 Alfalfa Hay Grown In Utah Soil Treated With Different Fertilizers, Adriana Lanting Kunkel
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Application of fertilizers to soils to increase production yields has raised questions concerning the effect of fertilizer on chemical composition of plants. With the development of accurate, sensitive microbiological methods for the determination of amino acid in protein, speculations concerning amino acid content have been supplanted by acquisition of facts.
The effect of the different fertilizer applications on alfalfa yield has been discussed by Jones, et al (5). Also, some work has been done to determine the effect different fertilizers might have on the amino acid content of plant material. Some values (1,3,12) have been reported for the amino acid …
The Effect Of The Bicarbonate Ion On The Respiration Of Excised Roots, Gene W. Miller
The Effect Of The Bicarbonate Ion On The Respiration Of Excised Roots, Gene W. Miller
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
For many years man has been searching for a cure for lime-induced chlorosis. This disease is prevalent throughout the entire western United States and is characterized by a yellowing of the leaves, destruction of the chlorophyll, and eventual death of the plant. It has brought devastation of fruit orchards in Utah, costing fruit producers millions of dollars. Hardly any county in Utah is free from this destructive nutritional disease.
Growth And Nutrition Of Plants As Affected By Various Levels Of Exchangeable Sodium, Mohammad B. Choudhri
Growth And Nutrition Of Plants As Affected By Various Levels Of Exchangeable Sodium, Mohammad B. Choudhri
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In saline soils, which are characterized by an appreciable quantity of neutral soluble salts, plant growth is adversely affected due to the increase in osmotic pressure and the consequent decrease in the physiological availability of water. In addition, growth may also be restricted through the accumulation of toxic quantities of various ions within the plant.
On the other hand, alkali soils, whether saline or non-saline, are characterized by a high content of exchangeable sodium in the cation-exchange complex. One reason of low productivity on these soils is the unfavorable physical conditions induced by the dispersing action of the sodium ions. …