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Articles 12451 - 12480 of 12523
Full-Text Articles in Entire DC Network
Bulletin No. 357 - Biennial Report, 1950-1952, R. H. Walker, D. A. Broadbent
Bulletin No. 357 - Biennial Report, 1950-1952, R. H. Walker, D. A. Broadbent
UAES Bulletins
For sixty-four years the Utah Agricultural Experiment Station has been studying the problems of the farmer to make life on the farm more profitable and more enjoyable and in turn to improve the economy of the entire state. From the laboratories and from the experimental farms have come research results that have and will continue to mean dollars and cents to the farmer and increased prosperity to the state. Here are a few brief statements of some of the results of the work during the past two years.
Bulletin No. 347 - The Life History And Management Of The Mountain Whitefish Prosopium Williamsoni (Girard) In Logan River Utah, William F. Sigler
Bulletin No. 347 - The Life History And Management Of The Mountain Whitefish Prosopium Williamsoni (Girard) In Logan River Utah, William F. Sigler
UAES Bulletins
In 1948 a comprehensive fishery investigation on Logan River was initiated by the Department of Wildlife Management, Utah State Agricultural College, and the Utah Cooperative Wildlife Research Unit. Three masters' theses have been completed on life histories and populations to date (Thoreson, 1949; Fleener, 1950; Pechacek, 1950). One phase of this investigation is a study of the mountain whitefish Prosopium williamsoni (Girard).
Microorganisms And Soil Structure, T. M. Mccalla
Microorganisms And Soil Structure, T. M. Mccalla
Department of Agronomy and Horticulture: Faculty Publications
SUMMARY
Laboratory tests were made to determine the effectiveness of different compounds and microbial groups in increasing the stability of Peorian loess lumps against the action of falling water drops. The influence of these on percolation tests in the laboratory was also determined.
Many organic substances-dextrose, sucrose, starch, peptone, cullulose, and gum arabic-did not themselves contribute directly to soil-structure stability, though these substances do furnish energy material for soil microorganisms, which can convert them readily into either microbial tissue or decomposition products that increase soil-structure stability. Lignin, proteins, oils, fats, waxes, resin, and paraffin increased the stability of lumps of …
Application Of Schuepp's Method To Form Analysis Of The Shoot Apex In Maize, Otto L. Stein, Ernst C. Abbe
Application Of Schuepp's Method To Form Analysis Of The Shoot Apex In Maize, Otto L. Stein, Ernst C. Abbe
Journal of the Minnesota Academy of Science
No abstract provided.
Bulletin No. 336 - Utah Agricultural Experiment Station Biennial Report, 1946-1948, R. H. Walker
Bulletin No. 336 - Utah Agricultural Experiment Station Biennial Report, 1946-1948, R. H. Walker
UAES Bulletins
During the past biennium there has been a general expansion in the research program of the Agricultural Experiment Station. This was made possible through increased state legislative appropriation and through federal funds made available by the Agricultural Research and Marketing Act which passed Congress in August 1946, although funds were not available until August 1947. Grants-in-aid by state and private agencies have also made other research possible.
Bulletin No. 327 - Utah Agricultural Experiment Station Biennial Report, 1944-1946, R. H. Walker
Bulletin No. 327 - Utah Agricultural Experiment Station Biennial Report, 1944-1946, R. H. Walker
UAES Bulletins
During the past biennium there has been a general expansion in the research program of the Utah Agricultural Experiment Station. Although some of the investigations were curtailed by lack of personnel and equipment and the pressure of wartime assignments, many of the staff were able to devote more time to research because of a lessening of the teaching load at the College. The emergency caused a re-examination of the research program, old projects, no longer urgent were weeded out, others were revised to meet the needs of the changing times, and many new projects were initiated to extend the research …
Farm Fishponds, Verne E. Davison
Farm Fishponds, Verne E. Davison
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
An important part of soil and moisture conservation is making the best use of every acre on the farm. Where a suitable site for a farm pond exists, no better use can be made of such land than to develop it for the production of fish for the farm family. The recreation the pond affords adds much to the pleasure of rural life.
Thousands of farms have good pond sites. Properly developed and managed ponds may provide both food and pleasure to more than a million farm people.
This bulletin tells how to have good ponds. It explains how to …
Bulletin No. 315 - Biennial Report, 1942-1944
Bulletin No. 315 - Biennial Report, 1942-1944
UAES Bulletins
The war years have made new demands on Station personnel and facilities. With fewer staff members and less adequate equipment the Station has not only carried on the regular project work, but the research program has been expanded, and numerous activities resulting from the emergency have been assumed.
The Station has taken a leading place in the victory food production program. Each year it has assumed the lead in a study of the wartime agricultural production capacity of the state and desirable crop and livestock adjustments studying all the agricultural assets and the ability to produce various crops.
As a …
Bulletin No. 310 - The Influence Of Cropping On The Nitrogen, Phosphorus And Organic Matter Of The Soil Under Irrigation Farming, J. E. Greaves, C. T. Hirst
Bulletin No. 310 - The Influence Of Cropping On The Nitrogen, Phosphorus And Organic Matter Of The Soil Under Irrigation Farming, J. E. Greaves, C. T. Hirst
UAES Bulletins
Most soils contain sufficient nutrients for normal plant growth, with the exception of nitrogen, phosphorus and potassium. These elements are used by plants in the largest quantities and the amounts of these in the soil govern its productivity. Soil organic matter is of prime importance for it is the matrix which holds the nitrogen and modifies the structure, temperature, and water-holding capacity of the soil. The organic matter is the very life of the soil, for it is in and on it that bacteria work and by so doing determine the kind and speed of reactions which occur. It is …
Bulletin No. 305 - The Composition Of Sumer Range Plants In Utah, L. A. Stoddart, J. E. Greaves
Bulletin No. 305 - The Composition Of Sumer Range Plants In Utah, L. A. Stoddart, J. E. Greaves
UAES Bulletins
In Utah, a vast industry of livestock grazing, which is the backbone of the state's agriculture, has arisen during the past 75 years. Range land furnishes between 6 and 7 million animal unit months of forage to some 2 1/2 million sheep and 275 thousand range cattle. Income from meat, wool, and range livestock sales in Utah is about $15,801,500 annually, of which $11,700,000 is calculated to be obtained from range lands exclusive of cultivated pastures.
These range lands can be used economically in no other way than by grazing livestock and, because of heavy winter snows and protracted dry …
Bulletin No. 302 - Nutritional Inadequacy Of Beet Molasses Rations For Swine, Russel A. Rasmussen, Harry H. Smith, Ralph W. Phillips, Ton J. Cunha
Bulletin No. 302 - Nutritional Inadequacy Of Beet Molasses Rations For Swine, Russel A. Rasmussen, Harry H. Smith, Ralph W. Phillips, Ton J. Cunha
UAES Bulletins
The feeding of large amounts of beet molasses to young hogs causes a condition that is characterized by a wobbly gait, and that is frequently fatal. Hog raisers have apparently recognized this condition for a number of years, since a number of farmers have reported it in their animals. Some farmers have also reported breeding failures and abortions when beet molasses was fed to brood sows. Consequently, beet molasses has not been considered a good hog feed by Utah raisers.
Beet molasses is a relatively cheap source of carbohydrates and could be used advantageously in pork production if the cause …
A Study Of Origins And Ecological Features Of Hardy, Cultivated, Herbaceous Plants Of Milwaukee, Wisconsin, Dorothy Elaine Witheck
A Study Of Origins And Ecological Features Of Hardy, Cultivated, Herbaceous Plants Of Milwaukee, Wisconsin, Dorothy Elaine Witheck
Bachelors’ Theses
Gardeners have always been interested in herbaceous plants, chiefly because of their beauty and usefulness. As a result of the great popularity, a large number of attractive varieties have been produced through centuries of' cultivation, selection and breeding. Very early agricultural and medical demands stimulated an interest in the plants, and as early as 372-287 B.C. Theophrastus, a pupil of Aristotle, described about 460 cultivated plants and classified them as herbs, undershrubs, shrubs and trees. Much of the work accomplished by the ancient Greeks was lost and it was not until the sixteenth century that renewed enthusiasm for the study …
Shrubs For Wildlife On Farms In The Southeast, Verne E. Davison
Shrubs For Wildlife On Farms In The Southeast, Verne E. Davison
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
On many farms in the Southeast patches of briars and small scrubby growth have been allowed to grow up in pastures, fields, and meadows, where they interfere with good farming. Shrubs have therefore come to be thought of all too often as plants that should be destroyed. The areas they occupy are shrubbed out and burned in an attempt to combat insects and to present an appearance of clean farming. This treatment destroys ground cover and hastens erosion. It deprives wildlife of food and shelter. It reduces the number of beneficial insects but does not exterminate the noxious kinds.
Shrubbing …
The Genetics Congress, R. A. Emerson
The Genetics Congress, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
Mice and men reported from
Edinburgh after the Congress
(JOURNAL OF HEREDITY for
September 1939) but since then there
has been silence, as far as getting into the
record any details of the Congress. On
account of the disruption to trans-Atlantic
travel caused by the declaration of
war between England and Germany,
September 3, the American delegation to
the Congress was considerably delayed
in getting back. Only two failed ultimately
to return, Dr. and Mrs. F. W.
Tinney of the Division of Farm Crops
of the University of Wisconsin. They
were among about a dozen members of
the Congress who …
Bulletin No. 284 - Lygus Bugs In Relation To Alfalfa Seed Production, C. J. Sorenson
Bulletin No. 284 - Lygus Bugs In Relation To Alfalfa Seed Production, C. J. Sorenson
UAES Bulletins
This investigation, which continued during the two succeeding years, had four primary purposes: (1) to determine the distribution of these plant bugs and the intensity of their infestation in the alfalfa-seed districts of the state; (2) to ascertain whether these bugs constitute an important factor, either causing or contributing to, the excessive flower-drop annually occurring in alfalfa-seed fields, or if they are otherwise responsible for decreased yields of alfalfa seed; (3) to study the general biology of these insects with particular reference to their life histories in alfalfa as the host plant; and (4) to investigate possible practical methods for …
Bulletin No. 286 - Some Trends In Utah's Agriculture, Walter U. Fuhriman
Bulletin No. 286 - Some Trends In Utah's Agriculture, Walter U. Fuhriman
UAES Bulletins
During the last two decades agriculture has been subjected to many strains and stresses- social, economic, physical, and biological. Infestations of noxious weeds and insect pests have in some instances necessitated changes in crops grown and in farming practices. Changes in precipitation have induced alternate expansion and contraction of cultivated acreage in certain areas. Improved machinery has reduced the demand for farm labor, caused shifts in crops grown and in farm population. Changes in dietary habits have increased the demand for some farm commodities and decreased the demand for others, while wide fluctuations in farm prices have wrought rapid changes …
A Zygotic Lethal In Chromosome 1 Of Maize And Its Linkage With Neighboring Genes, R. A. Emerson
A Zygotic Lethal In Chromosome 1 Of Maize And Its Linkage With Neighboring Genes, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
A Bolivian maize
maize with mosaic red pericarp and cob, here designated by the symbol M-M, crossed with a local inbred strain of maize having white pericarp and cob, W-W, produced in F1 21 M-M and 28
W-W plants, not far from the I : I relation expected on the assumption that
the M-M parent was heterozygous for pericarp and cob color, M-M/W-W.
In F2 and segregating F3 cultures, however, there were 130 M-M and 64
W-W plants obviously a 2 : I instead of the 3 : I relation expected. Later cultures
increased these records to …
Bulletin No. 282 - Pioneering In Western Agriculture
Bulletin No. 282 - Pioneering In Western Agriculture
UAES Bulletins
A resume of the First Half-Century of Research 1888 - 1938 at the Utah Agricultural Experiment Station including the Biennial Report 1936 - 1938.
The Utah Agricultural Experiment Station in reaching the fiftieth year of its history can look back upon a brilliant record of achievement covering the practical as well as the more fundamental problems of agriculture in this arid state. The difficulties encountered in conquering deserts down through human history have demonstrated the mastery of man's spirit over his physical environment. Man's destiny to multiply, subdue, and replenish the earth cannot be accomplished by enjoying the fruits of …
Bulletin No. 280 - Sinusitis Of Turkeys And Its Treatment, D. E. Madsen
Bulletin No. 280 - Sinusitis Of Turkeys And Its Treatment, D. E. Madsen
UAES Bulletins
Sinusitis has long been recognized as one of the barriers to profitable production of chicken products; and with the growth of commercial turkey production in the west its existence in this bird has become increasingly significant. In Utah areas considerable loss is encountered yearly from this disease in turkeys. This loss has prompted some investigations as to what measures may be adopted for its control.
Bulletin No. 277 - A Study Of Utah's Winter Range: Composition Of Forage Plants And Use Of Supplements, A. C. Esplin, J. E. Greaves, L. A. Stoddart
Bulletin No. 277 - A Study Of Utah's Winter Range: Composition Of Forage Plants And Use Of Supplements, A. C. Esplin, J. E. Greaves, L. A. Stoddart
UAES Bulletins
Range forage provides the foundation for the maintenance ration available for most sheep wintered in Utah. The nature and amount of supplemental concentrate or roughage needed with this forage to provide an adequate and efficient ration for sheep naturally depends on the nature and amount of range forage available. Present uncertainty as to the relative merits of the various available supplements originates largely through a lack of definite knowledge as to the composition and feeding value of the various range plants that go to make up the range-forage supply on the particular range in question.
E. J. Maynard
The Effects Of X-Rays Upon The Roots Of Zea Mays, Bernard Louis Wolfe
The Effects Of X-Rays Upon The Roots Of Zea Mays, Bernard Louis Wolfe
Bachelors’ Theses
Since. the discovery of X-rays by Rontgen in 1895, the majority of published papers dealing with the influence of these rays on plant life have considered their general effects on physiological processes including rate of seed germination and growth, respiration, and movements. A large number of investigators have worked on the morphological and cytological aspects while comparatively few workers have been interested in the histological effects of the stimulated tissues. The purpose of this thesis is to show the histological, morphological, and cytological effects of X-rays upon the root tips or the Zea Mays as well as the effects these …
Crow-Waterfowl Relationships Based On Preliminary Studies On Canadian Breeding Grounds, E. R. Kalmbach
Crow-Waterfowl Relationships Based On Preliminary Studies On Canadian Breeding Grounds, E. R. Kalmbach
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
With the object of obtaining a current insight into the relationship of crows to waterfowl on their breeding grounds, a study was inaugurated in the spring of 1934 and continued through the nesting season of that and the following year. As originally planned, it called for field studies both in Canada and in the northern United States, but drought conditions had so drastically reduced the breeding population of ducks within our borders by the spring of 1934 that, after a futile effort to locate suitable areas in this country, plans were changed and the studies were restricted to Canadian areas …
Diseases Of Upland Game Birds, J. E. Shillinger, L. C. Morley
Diseases Of Upland Game Birds, J. E. Shillinger, L. C. Morley
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Until recently the diseases of upland game birds received comparatively little specific study, except in a few outbreaks in which serious losses were observed. Though highly destructive, many of these outbreaks were of such short duration that the investigations undertaken were chiefly to learn the cause of death and usually were discontinued when losses were no longer noticeable. It has become increasingly evident, however, that every year great numbers of game birds die of disease, the decreases in their numbers frequently occurring in sections closed to hunting, even though food, cover, and other environmental conditions appear ideal. The disease problems …
Local Bird Refuges, W. L. Mcatee
Local Bird Refuges, W. L. Mcatee
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Birds appeal strongly to the interests and affections of mankind. Not only do they charm by their graceful forms, harmonious colors, sprightly actions, and usually pleasing notes, but they have an even more important claim upon our esteem because of their great economic value.
Birds feed upon practically all insect pests. They are voracious, are able .to move freely from place to place, and exert a steady influence in keeping down the swelling tide of insect life.
For economic as well as for esthetic reasons, therefore, an effort should be made to attract and protect birds and to increase their …
Bulletin No. 275 - Types Of Farming In Utah, Marion Clawson, Walter U. Fuhriman, George T. Blanch, W. Preston Thomas
Bulletin No. 275 - Types Of Farming In Utah, Marion Clawson, Walter U. Fuhriman, George T. Blanch, W. Preston Thomas
UAES Bulletins
A large portion of the agriculture of Utah, outside of the desert range areas, is characteristically heterogeneous rather than homogeneous in character. Marked differences in size of farm, in crops grown, in livestock kept, in yields, and in farm organization occur within short distances. This diversity is due in large measure to differences in soil, elevation, topography, and other physical features and to climatic characteristics such as amount, kind, and distribution of precipitation and length of growing season. The physical and climatic features are the chief determinants of the amount of water potentially available for the irrigation of the crop …
Bulletin No. 276 - How Science Aids Utah Agriculture
Bulletin No. 276 - How Science Aids Utah Agriculture
UAES Bulletins
Biennial Report of the Director, 1934-35 and 1935-36 Agricultural Experiment Station Utah State Agricultural College, Logan, Utah
Bulletin No. 274 - Influence Of Rotation And Manure On The Nitrogen, Phosphorus, And Carbon Of The Soil, J. E. Greaves, C. T. Hirst
Bulletin No. 274 - Influence Of Rotation And Manure On The Nitrogen, Phosphorus, And Carbon Of The Soil, J. E. Greaves, C. T. Hirst
UAES Bulletins
All agricultural plants require carbon, hydrogen, oxygen, nitrogen, calcium, potassium, magnesium, sulfur, phosphorus, iron, and probably traces of other elements for their normal growth and fruition. The growth of farm crops is dependent upon an available supply of these elements, and the extent of growth is governed by the one present and available in least quantity in proportion to the plant's needs. Of the essential elements, all plants secure two (carbon and oxygen) from the air, one (hydrogen) from the water, and the others from the soil. Most soils contain sufficient plant nutrients for normal plant production, with the exception …
Water Relations To Germination Of Zea Mays, Mary Hood
Water Relations To Germination Of Zea Mays, Mary Hood
Masters Theses & Specialist Projects
Four experiments regarding water relations to germination of zea mays.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and filter paper used as water absorbent.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and filter paper used as water absorbent.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and cotton used as water absorbent.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and cotton used as water absorbent.
Bulletin No. 266 - Comparative Size Of Rural And Urban Utah School Children As Determined By The Weight - Height - Age Relationship, Almeda P. Brown
Bulletin No. 266 - Comparative Size Of Rural And Urban Utah School Children As Determined By The Weight - Height - Age Relationship, Almeda P. Brown
UAES Bulletins
The problem investigated was as to whether significant differences occur in size of rural and urban Utah school children. Through cooperation of school officials weight-height-age measurements were secured for the following groups of children from 6 to 15 years of age.
Improving The Farm Environment For Wild Life, Wallace B. Grange, W. L. Mcatee
Improving The Farm Environment For Wild Life, Wallace B. Grange, W. L. Mcatee
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
As farms replace virgin lands, whether forest or swamp, marsh or prairie, conditions affecting wild life are revolutionized. Some creatures, especially the larger ones, disappear. Others are benefited, at least during the earlier stages of agriculture, and increase in numbers. This is true of nearly all birds up to the size of the crow and of mammals to that of the rabbit. As agriculture becomes more intensive, however, and woods are cut down, hedgerows eliminated, and rough nooks here and there brought under cultivation, conditions become unfavorable for the smaller forms of wild life.
Uniform mature forest, uniform swamp, or …