Life Sciences Commons^™

Investigations On The Root Habits Of Plants, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

Ten years ago, while studying the vegetation of semi-arid eastern Washington, interest in root studies was aroused because of the extensive root systems of the native species. Balsamorrhiza sagittata, the first plant excavated, is representative. The strong tap root reaches a depth of six feet, and very numerous branches run laterally to distances of about two feet. Further investigations in several other states showed that extensive root systems are the rule among grassland species. Andropogon haliji, with exceedingly well branched fibrous roots seven feet deep, is representative of many of the dominants. About ninety percent of the more …

Transect Method Of Studying Woodland Vegetation Along Streams, J. E. Weaver, Herbert Hanson, John Aikman

Department of Agronomy and Horticulture: Faculty Publications

In pursuance of an investigation of competition among certain shrubs (Rhus glabra, Corylus americana, Symphoricarpos spp.), and between these shrubs and Quercus macrocarpa, it became imperative, for a proper understanding of their behavior, to ascertain just how near the edge of their range they were growing. The station, which is located at Weeping Water, Nebraska, is on the Weeping Water River, a branch of the Missouri, I5 miles west of its mouth. This stream arises I 5 miles farther west, and in general its course parallels that of the Platte River about I 5 miles north. As is …

Circular No. 56 - Summary Of Publications

UAES Circulars

Circular No. 56 contains summaries of publications of the Utah Agricultural Experiment Station' issued since September, 1924. The publications of this Station are no longer sent to a general mailing list (except in case of libraries) but are sent only on request. Therefore, copies of any of the publications listed will be sent without charge to those requesting them as long as the supply is available. However, in case of abstracts of scientific and technical papers the supply is very limited and the requests for these should be limited as far as possible only to those who are especially …

Circular No. 55 - Rules And Regulations For The Second Utah Intermountain Egg-Laying Contest, Byron Alder

UAES Circulars

The support given the first Utah Intermountain Egg-Laying Contest by the poultry breeders of this section and the very unusual records obtained during this contest to date seem to justify this announcement of the rules and regulations for the second contest to begin November 1, 1925. The contest is located on a part of the Utah Agricultural College Farm near the experimental poultry yards. It is managed by the Poultry Department with an experienced poultry raiser in direct charge of the feeding and care of the hens in the contest. The buildings, grounds, and fences were built and furnished by …

Bulletin No. 194 - The Influence Of Storage On The Composition Of Flour, J. E. Greaves, C. T. Hirst

UAES Bulletins

There is quite a general belief among millers, bakers, and the laity that flour improves on ageing. However, there is no definite information as to the time requisite for this improvement nor whether it reaches a maximum and then deteriorates. The information is no more exact as to the changes which occur during the ageing process or the conditions which govern them. We have found no reference in the literature where bad effects have resulted from storage, provided a highly-milled, sound flour is stored in dry, well-ventilated rooms free from odors (20). The results which have been reported point to …

Hardy Alfalfa For Nebraska, T. A. Kiesselbach, A. Anderson

Nebraska Agricultural Experiment Station: Historical Circulars

Comparative tests of varieties and regional strains of common alfalfa at the Nebraska Experiment Station have clearly indicated that winter hardiness is an important factor to be considered when purchasing alfalfa seed. Much of the seed sold in the United States has proved inferior in this regard for Nebraska conditions. The use of southern-grown domestic seed or seed imported from countries with a much milder climate than that of Nebraska should be avoided in this state. On the other hand, reliance may be placed on the seed of hardy varieties or hardy regional strains of common alfalfa grown in Nebraska …

The Relation Of Light To Soil Moisture Phenomena And To Water Transmission In Plants, Leon B. Linford

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An attempt was made in this laboratory to measure the pressure or capillary potential of soils by a vapor pressure method. The experiment was carried out by placing small cans of soil in dessicators with solutions of known vapor pressure in the bottom. These dessicators were immersed in a constant temperature water bath. It was hoped that by this method the vapor pressure of the soils could be determined and the pressure potentials calculated as will be explained in a later part of this paper. The results were disappointing because the wet soils in dessicators over pure water dried out …

Circular No. 54 - The More Important Insects Injurious To The Sugar-Beet In Utah, I. M. Hawley

UAES Circulars

Insects destroy many sugar-beets in Utah. In some years the incomes of the farmers of the state are greatly reduced because of the ravages of these pests. This circular has been written in the hope that the more important information about the insect pests of this valuable crop may be more readily available to the beet growers of the state.

The insects treated in this paper are grouped under two main heads. In the first division are included those insects affecting the tops or foliage of the beet. In the second division are those insects that feed on the roots.

Bulletin No. 193 - Cache County Water Conservation District No. 1, William Peterson, G. D. Clyde, D. S. Jennings, M. D. Thomas, Karl Harris

UAES Bulletins

Cache County Water Conservation District No. 1 lies on the west side of the valley about eight miles from and a little northwest of Logan, Cache County, Utah. Figure 1 shows the location of the project with respect to Salt Lake, Ogden, Brigham City, Logan, and Cache County. Cache County, with a population in 1920 of 27,000 people, is located in the north-central part of the state and occupies the greater part of the fertile Cache Valley. Cache County Water Conservation District No.1 includes 8490.78 acres (of which 7373.38 acres are allotted water) and extends from Bear River and its …

Dodecatheon Clevelandii Greene, Carl C. Epling

Specimens by Name

No abstract provided.

Contributions From The United States National Herbarium, Volume 25: Flora Of Utah And Nevada, Ivar Tidestrom, Smithsonian Institution

All U.S. Government Documents (Utah Regional Depository)

The region embracing the States of Utah and Nevada is much diversified as to both topography and plant covering. Though lying wholly within the arid portion of the United States, it contains high mountains separated one from another by dry desert valleys or by table-lands. The region affords a highly varied topography, and its flora ranges from arctic to subtropical and from truly desert elements to the humid elements of the Rocky Mountains and the Sierra Nevada. With the one hundred and ninth meridian for its eastern boundary and the one hundred and twentieth for its western, the greatest breadth …

Bulletin No. 192 - Biennial Report Of The Director: For The Years 1923 And 1924

UAES Bulletins

No report (either annual or biennial) of the work of the Utah Agricultural Experiment Station has been published separately since 1906. There has been so much inquiry regarding the present status of research projects that a brief report at this time is considered opportune. The report is an attempt to give the reader a brief but concise and comprehensive survey of the research work now under way at the Utah Agricultural Experiment Station as well as a brief description of the work being attempted on each of the experimental farms.

Further Studies On The Effect Of Environment On Potato Degeneration Diseases, R. W. Goss, George L. Peltier

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The identification of potato degeneration diseases in the field is extremely difficult owing to the number of diseases now described, their manifestation on different varieties, the combination of several diseases on the same plant, and the further splitting up of these combinations into separate diseases. The influence of environmental factors in intensifying or inhibiting the symptoms of these diseases also increases the difficulty of diagnosis. In the present investigation the effect of environmental factors has been studied with the purpose of determining the limiting factor or factors in the masking of the symptoms, in the hopes of simplifying a complex …

The Chromosome Number Of Maize, T. A. Kiesselbach, N. F. Petersen

Department of Agronomy and Horticulture: Faculty Publications

The wide-spread interest in the genetics of maize, coupled with the uncertainty as to the number of chromosomes occurring in this species prompted the investigation which is here reported. From a review of the literature it appears that Kuwada (1911, 1915, 1919) is the only worker who has reported extensive counts of maize chromosomes. His results are summarized in table 1. Variations were reported in the number of chromosomes both within and between varieties as well as between different cells of individual plants. He concluded that sweet varieties are usually characterized by having twelve chromosomes, and starchy varieties by having …

The Occurrence Of Starch And Erythrodextrin In Maize And Their Segregation In The Pollen Of Hybrids, T. A. Kiesselbach, N. F. Petersen

Department of Agronomy and Horticulture: Faculty Publications

A variety of maize (Zea mays) differing from other known sorts in the texture of its endosperm was described by Collins (1909). The type of endosperm of this variety was designated as “waxy” in contrast with the starchy and sweet types of other maize. It has since been shown by Weatherwax (1922) that the carbohydrate of this waxy endosperm is erythrodextrin which can be distinguished from other carbohydrates by its red color reaction with iodine. It has recently been reported by Demerec (1924) and Brink and MacGillivray (1924) that this carbohydrate is also present in the pollen of …

Circular No. 53 - Summary Of Publications

UAES Circulars

This circular contains summaries of the publications of the Utah Agricultural Experiment Station issued since September 1923. The publications of this Station are no longer sent to a general mailing list (except in the case of libraries) but are sent only on request. Therefore, copies of any of the publications listed will be sent without charge to those requesting them as long as the supply is available.

Bulletin No. 189 - Ridding The Land Of Wild Morning Glory, George Stewart, D. W. Pittman

UAES Bulletins

"Morning glory" is the common name for one of the worst weeds found in Utah. On account of its general resemblance to a cultivated plant spoken of as morning glory, the weed is frequently and more correctly known as the "wild morning glory." Since everyone who handles farm land knows the plant, a description of it is unnecessary. It may not be amiss, however, to mention that the name probably comes from the fact that the showy, funnel-shaped flowers are open only in the morning, being folded within the sepals after midday or earlier in hot, dry weather.

Bulletin No. 190 - Corn Silage In A Dairy Ration, W. E. Carroll

UAES Bulletins

In 1914 a study of the value of corn silage in the dairy ration was undertaken at this station. The first phase of the general question to receive attention was the effect of adding silage to a basal ration of alfalfa hay and grain.

Circular No. 52 - Rules And Regulations For The Utah Intermountain Egg-Laying Contest, Byron Alder

UAES Circulars

The contest will be located on a part of the Utah Agricultural College Farm near the experimental poultry yards. It will be managed by the Poultry Department with an experienced poultry raiser in direct charge of the feeding and care of the hens in the contest. It is hoped that the entry fee and the sale of eggs will pay for the expense of the contest. The buildings, ground, and fences will be built and furnished by the college.

Western Yellow Pine Mistletoe, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

This bulletin gives the results of studies over a period of twelve years on the effect of mistletoe Razounzofskya cryptopoda (Engelm.) Cov. on the growth and seed production of western yellow pine. The intensive part of these studies was carried on near the San Francisco mountains in northern Arizona. " The parasite is the most widely distributed and one of the most serious enemies of the western yellow pine." On southern slopes and near the lower limit of the distribution of the pine, areas occur where 75 to 90 per cent of all trees above six inches in diameter are …

Plant Production As A Measure Of Environment: A Study In Crop Ecology, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

Table of Contents:
Introduction
Location and Description of Stations
Comparisons of Environments
Experimental Methods and Results, 1920
Experiments during 1921
Environmental Conditions
Plant Yield
Experiments during 1922
Environmental Conditions
Native Plant Yield
Growth Of Maize
Summary of Experiments on Native Vegetation
Summary

Control Equipment For The Study Of The Relation Of Environment To Disease, George L. Peltier, R. W. Goss

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The investigation of certain plant disease problems in Nebraska has necessitated the study of the relation of various environmental factors to these diseases. The control of these environmental factors in the greenhouse studies has been obtained by the use of previously described apparatus or their modification and adaptation, along with new methods which have been devised to meet the needs of these investigations. In view of the widespread interest in the subject of environmental control for experimental studies, it was deemed advisable to present briefly the methods now in use in this department in the hope that the information may …

Bulletin No. 188 - Maintaining The Productivity Of Irrigated Land, D. W. Pittman

UAES Bulletins

It is almost universal history that in farming a newly developed region no attention whatever is paid to maintaining the fertility of the soil. This is natural for two very obvious reasons. In the first place the pioneer has other and more pressing problems in the "subduing" of the new land, and in the second place such virgin soils are generally blessed with a great abundance of native fertility. New lands in an arid or semiarid region are usually especially fertile because they represent a long-time accumulation of fertility which is not possible under humid conditions. Since in a humid …

Potato Wilt And Stem-End Rot Caused By Fusarium Eumartii, R. W. Goss

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The present study was undertaken to obtain more information regarding the pathogenicity of Fusarium eumartii and to compare its action with F. oxysporum, in order to distinguish between and to determine the relative importance of the diseases produced by these two organisms. An effort was also made to explain the many negative results of isolation studies reported by various investigators, as well as the inconsistent results often reported in studies of the transmission of wilt by infected tubers. Investigations dealing with the effect of certain environmental conditions on the occurrence of the disease were also undertaken. All of the …

Circular No. 51 - Foot-And-Mouth Disease, H. J. Frederick

UAES Circulars

The following is printed that the seriousness of the foot-and-mouth disease outbreak might be apparent to the farmers and ranchmen of Utah, that the importance of the quarantine regulations might be emphasized, that precautionary methods might be adopted by each individual concerned, that the disease might be recognized should it occur, and that each stock man of the state might see the importance of immediately reporting to the State Veterinarian or to a veterinarian in his locality or to the Utah Agricultural Experiment Station.

A Study Of Size Inheritance In Wheat, Peter Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The results presented in this paper are from data accumulated by a study of the F3 generation of a cross between the two varieties, Sevier and New Zealand wheat. This cross was made during the summer of 1920 by Professor George Stewart with the object of combining the high-yielding power of Sevier with the strong straw of New Zealand. In the fall of 1922 the problem was assigned to me, at which time I selected about 150 superior plants, possessing the desired characteristics, at least so far as appearance was concerned. Since then these plants and the F3 generation have …

Inheritance Of Chaff Color, Head Shape, And Grain Texture In Wheat, Delmar C. Tingey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The data presented in this thesis are the results obtained from a study of the F₂ and F₃ generations from a cross between the wheat varieties, Dicklow and Hard Federation. Toward the end of the summer of 1922 this problem was assigned to me by Professor George Stewart. The plants then growing in the field were in the F₂ generation, the cross having been made in 1920 by Professor Stewart. The chief purpose of the cross was to improve the grain quality of spring-irrigated wheat by the application of Mendelian principles in such a way as to …

The Effect Of Dry Heating On Alfalfa Seed And Adulterants, Ernest V. Staker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The relationship of artificial heating to the germination of seeds has been a subject of more or less interest for the last 75 years. Like other research work, experimenters first had their attention called to the problem largely as the result of innate curiosity. They were interested in the result as measured by germinative power, of the application to seeds of different amounts of heat for varying periods of time, consequently many divergent and sundry experiments were carried out. Seeds of a large number of plants have been subjected to tests and the results recorded. The investigations include the effect …

Qualitative Mendelian Inheritance In Wheat Hybrids, Aaron F. Bracken

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two methods of crop improvement are open to the plant breeder. Pure-line selection, which might be mentioned first, deals with the natural variability in plant populations. Thru selection, isolation, and comparative yield tests superior individuals are located. Nothing, however, can be added which the plant does not already have. Here hybridization provides a new starting point. Increased variation, new combination of characters, and thus greater opportunities are provided for improvement. The present investigation has for its purpose a study of the latter phase of this subject.

In certain parts of Utah the straw from dry-land wheat is used for feeding …

Inheritance Studies In Kanred X Martin And In G-149 X Ridit, Myron T. Hansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The studies here reported involve two crosses, one of which was between a pure line of Kanred and a pure line of Martin from a bunt resistant selection. The other was between a pure line of G-149, a rust-resistant segregate from Sevier x Dicklow, and a pure line of Ridit. These were both economic breeding projects made in an effort to combine the good commercial qualities of Kanred and G-149 with the high bunt resistance of Martin and Ridit, respectively.

These crosses also furnished, as a by-product, some good genetic data, as in each cross one parent was fully awned …