Life Sciences Commons^™

The Chemical Nature And Distribution Of Black Pigment In Soil, William Sherman Gillam

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

As used in this paper, humus refers to that portion of the soil organic matter peptized by four per cent ammonium hydroxide. That fraction peptized by four per cent ammonium hydroxide, precipitated by acids, and insoluble in alcohol, is designated as black pigment. It is called humic soil by many writers.

Root Distribution Of Trees In Relation To Soil Profile, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

One of the pronounced trends in American forestry during the past decade has been the development of a widespread interest in soils. As a consequence to the soil as a part of the environmental complex has been attributed much greater importance than formerly in forest production. In fact, the individual horizons of the soil profile are receiving attention each as a more or less distinct habitat of that highly organized body designated as soil. Just as soil scientists, until recent years, have given inadequate attention to the factor of vegetation in the constitution and development of soils, so too little …

North And South Dakota Horticulture, December 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 12

Bird Banding, O.A. Stevens
N.D. News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
Insect Enemies, J.L. Low
Secretary's Corner, W.A. Simmons
Indian Lore, H.L. Hopkins
Book Review, Mrs. F. Briley
Index to Volume X

Root Development Of Young Delicious Apple Trees As Affected By Soils And By Cultural Treatments, W. W. Yocum

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The major problem of this investigation was to determine the effects of different cultural treatments and soil conditions upon the depth and lateral spread of the root systems of young Delicious apple trees during the first three years in the orchard. This study was conducted during the years 1932 to 1934 inclusive.

North And South Dakota Horticulture, November 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 11

The Wild Turkey, O.A. Stevens
N.D. News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
Wanakena Garden Club, Mrs. E. Moon
Secretary's Corner, W.A. Simmons
Care of Old Groves, F.I. Rockwell
Newslants, H.A. Graves
Appreciating the Lily, M.G. Kains
Premium List
Garden Encyclopedia, Mrs. F. Briley

North And South Dakota Horticulture, October 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 10

The Roughlegged Hawks, O.A. Stevens
N.D. News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
Beautifying Home Grounds, Mrs. A.H. Christiansen
Secretary's Corner, W.A. Simmons
Fall Care of Bees, J.A. Munro
Horticultural Experiences, H.L. Hopkins
South African Plants, Mrs. F. Briley
Spray Residue Regulations Break Down, A.N. Pratt
Honey Cookery, Lorraine Engle
Newslants, H.A. Graves
The Robertson Memorial

North And South Dakota Horticulture, September 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 9

The Red-tailed Hawk, O.A. Stevens
N.D. News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
John S. Robertson
Secretary's Corner, W.A. Simmons
Beekeeper's Meeting, J.A. Munro
A Rose Odyssey, Mrs. F. Briley
Some Hort. Experiences, H.L. Hopkins
Developing My Orchard, C. Benike
Newslants, H.A. Graves

Comparative Physiology Of Actinomyces In Relation To Potato Scab, Mitrofan M. Afanasiev

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The present work was undertaken with the purpose of investigating the physiology of different strains of A. scabies as compared with saprophytic Actinomyces. By a comparative study of these groups, it was thought that differences in the physiology of the two might be found which would give a better understanding of the nature of this parasitism and also of the metabolism of Actinomyces in general. In addition, it was hoped that the determination of the factors influencing the parasitism of Actinomyces might establish a basis for the development of more efficient methods of controlling scab diseases. The present investigation …

North And South Dakota Horticulture, August 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 8

The Red-headed Woodpecker, O.A. Stevens
N.D. News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
Herbs -- Yarbs. Mrs. R.L. Keating
Secretary's Corner, W.A. Simmons
The Plant Doctor, Mrs. F. Briley
English Horticulture, M.T. Fossum
Bird Habits, F.W. George
Name the Bing Cherry, W.S. Campfield
Newslants, H.A. Graves

The Influence Of Various Soil Factors Upon Potato Scab Caused By Actinomyces Scabies, R. W. Goss

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Scab, caused by Actinomyces scabies (Thaxt.) Giiss., is a potato disease of major importance in western Nebraska. Seed treatments are effective in controlling seed-borne scab, but it has been shown that even when healthy or treated seed potatoes are used the disease may be very severe because of infection from the soil. Crop rotation will reduce the incidence of the disease, but the fact that potato scab may cause serious loss in soils never before planted to potatoes indicates that there are numerous factors other than the time interval between potato crops which affect the occurrence of the disease. A …

North And South Dakota Horticulture, July 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 7

The Shrikes, O.A. Stevens
North Dakota News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
A Test Winter, A.L. Truax
Secretary's Corner, W.A. Simmons
Our Cover Page, H.A. Graves
Book Review, Mrs. F. Briley
Beekeepers' Notes, J.A. Munro
Plant Breeding, F.L. Skinner
Egg Plant Fritters, M.M. Wallner
Tiny Beginnings of Giant Trees
Big Sierra Mountain Juniper
Bird Habits, F.W. George

Bulletin No. 281 - Sorghums Varietal Tests In Utah, R. W. Woodward, D. C. Tingey, R. J. Evans

UAES Bulletins

Sorghums are not grown to any appreciable extent in Utah except in the Virgin River valley in the southwestern portion of the State. No experimental work on sorghum culture had been done prior to 1931 except on the dry land of Juab County near Nephi. Those early tests, discontinued after 1917, indicated that sorghums were poorly adapted to such conditions.

Numerous improved varieties have been produced since that time, some of which are adapted to relatively short growing seasons.

This bulletin will discuss the practicability of growing some of these varieties of sorghum in Utah and their economic value compared …

Bulletin No. 278 - Should Flax Be Grown In Utah, R. W. Woodward, D. C. Tingey, A. C. Dillman

UAES Bulletins

Flax has been considered as a possible crop for growing under irrigation in Utah because of its high acre return in some of the northern States. One of the functions of a State experiment station is to test new crops and varieties. A series of experiments , therefore, has been conducted in Utah to determine the yields of flax as compared with small grains both under irrigation and on dry lands. This bulletin report s a summary of the results of these experiments together with a discussion of comparative returns from flax and small grains.

Two types of flax, seed …

North And South Dakota Horticulture, June 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 6

The Dickcissel, O.A. Stevens
North Dakota News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
Lilacs, D.H. Scott
Secretary's Corner, W.A. Simmons
Nature and Human Nature, S.H. Bober
Utilizing Rhubarb, Dorothy Berrigan
Fruit Observations, W.R. Leslie
Bird Neighbors, Dr. J.F. Brenckle
Soil for Tree Growth, W.H. Paul

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

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 …

North And South Dakota Horticulture, May 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 5

The Bobolink, O.A. Stevens
North Dakota News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
Plant Hormones, P.W. Zimmerman
Secretary's Corner, W.A. Simmons
Forest Conditions, Walter H. Paul
A Test Winter, John S. Robertson
Beekeepers' Notes, J.A. Munro
Fruit Observations, W.R. Leslie

The Identification Of The Tomato Mosaic Virus Prevalent In Utah, Ross D. Watson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Collections of tomato mosaic virus obtained from Utah and California produce a localized severe leaf and stem necrosis on Datura meteloides. After the streaked plant has stood sufficiently long to permit secondary growth to occur, a systemic diseased expression develops in a few of the plants. No reference to a similar development on Datura meteloides following inoculation with the tobacco mosaic virus was found in the literature.

The Plankton Of The Bear River Migratory Waterfowl Refuge, Utah Seasonal Distribution Of Organisms, George Piranian

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the summer of 1932, an investigation of some biological, physical, and chemical conditions at the Bear River Migratory Waterfowl Refuge, Utah, was begun at the Utah State Agricultural College to determine some of the factors governing the biological productivity of brackish-water marshes. Unfortunately, lack of funds made it impossible to continue work beyond the first season.

In 1936, the Wild Life Experiment Station at the Utah State Agricultural College appropriated a fund for a cooperative project between the Station and the Department of Botany at the same institution. This project, planned to be continued by various graduate fellows over …

North And South Dakota Horticulture, April 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 4

The Kingfisher, O.A. Stevens
North Dakota News Letter, Dr. A.F. Yeager
President's Corner, F.X. Wallner
From Our Mailbag, Victor Lundeen
Orchard Management, L.L. Davis
Secretary's Corner, W.A. Simmons
New Apple Varieties, G.H. Howe
Evergreens from Seed, J.H. Gerbracht

North And South Dakota Horticulture, March 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 3

The Mourning Dove, O.A. Stevens
North Dakota News Letter, Dr. A.F. Yeager
Plant Spacing, John S. Robertson
President's Corner, F.X. Wallner
New Fruits Hardiness, E.A. Gates
Bee Report, J.A. Munro
Secretary's Corner, W.A. Simmons
Gambles of a Gardener, Mrs. G.M. Jorgenson

North And South Dakota Horticulture, February 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 2

The Passenger Pigeon, O.A. Stevens
N. Dak. News Letter, Dr. A.F. Yeager
New Tomatoes, John S. Robertson
President's Corner, F.X. Wallner
From Our Mailbag, Victor Lundeen
State Tree Planting, J.L. Low
Secretary's Corner, W.A. Simmons
Beekeeper's News Letter, J.A. Munro

North And South Dakota Horticulture, January 1937, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 10, Number 1

The Canada Jay, O.A. Stevens
N.D. News Letter, Dr. A.F. Yeager
N.D. Premium List
Uses of Plants by Indians, G.F. Will
President's Corner, F.X. Wallner
From Our Mailbag, Victor Lundeen
Secretary's Corner, W.A. Simmons
Beekeeper's Conference, J.A. Munroe

A Study Of The Native Trees Of Amador County, Guy V. Towsley

University of the Pacific Theses and Dissertations

The region covered by this study reaches from the valley floor of the San Joaquin-Sacramento Valley, with an altitude of about 150 feet, to the top of the Sierra Nevada Mountains, whose peaks, in Amador County, reach to more than 9000 feet. Mokelumne Peak has an altitude of 9371 feet. The north and south distance, across the county at Ione, is 22 miles, while at Cook's Station, it is barely 5 miles. Amador County has an area of about 600 square miles.

Thus, a study of trees in this county, gives a fairly representative cross-section picture of the Sierras at …

The Effect Of Cultivation On Certain Chemical And Physical Properties Of Some South Dakota Soils, Oscar E. Olson

Electronic Theses and Dissertations

Soil Nutrient losses have followed closely in the paths of advancing frontiers in agriculture. Remedies for depletion as the result of overcropping were sought by George Washington, whose interest and investigation of soil nutrient losses probably represent the earliest attention given to land exploitation in the United States, which at the present time has become a problem of national concern. Soil losses have been attributed to a number of causes , among which are cropping, erosion, leaching, burning, and rapid oxidation of organic matter in the soil. Associated with soil nutrient losses, certain significant physical and chemical changes may occur …

A Study Of Mahogany., Roy A. Lawrence

Electronic Theses and Dissertations

No abstract provided.

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

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

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 …

The Influence Of Overgrazing On The Density And Number Of Palatable And Unpalatable Desert Forage Plants, John H. Mcguire

Theses and Dissertations

The data for this problem were collected at the Desert Range Experiment Station and on adjoining public domain lands during the summer of 1934, for the purpose of studying the influence of overgrazing on the increase of palatable and unpalatable desert forage plants. A vegetative description of the two areas studied has been prepared and presented.