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Articles 248011 - 248040 of 256032

Full-Text Articles in Life Sciences

Acer Saccharinum L., Geo. D. Fuller May 1949

Acer Saccharinum L., Geo. D. Fuller

Specimens by Name

No abstract provided.


Circular Letter #24. Second Annual Livestock Show Classes For Cattle. Second Annual Livestock Show Swine Classes. Swine Class Rules, S. B. Simmons May 1949

Circular Letter #24. Second Annual Livestock Show Classes For Cattle. Second Annual Livestock Show Swine Classes. Swine Class Rules, S. B. Simmons

Documents

Letter to all Agricultural Teachers from S. B. Simmons, concerning 21st NFA convention and livestock show. List of classes for cattle show. List of swine classes. Swine class rules.


A New Elasmosaur From The Eagle Ford Shale Of Texas: Systematic Description, S. P. Welles May 1949

A New Elasmosaur From The Eagle Ford Shale Of Texas: Systematic Description, S. P. Welles

Fondren Science Series

The elasmosaurs were marine reptiles, plesiosaurs with extremely long necks and proportionately very small heads. The larger individuals of the Upper Cretaceous attained a length of forty feet, with necks over twenty feet long. Their limbs were so highly modified into paddles that progress on land must have been extremely difficult, if not impossible. Their long sharp teeth indicate a fish-eating habit, and this has been confirmed by the fossilized stomach contents. The fish were evidently gulped down whole and ground up in a gizzard-like organ which contained stomach stones.


Aplectrum Hyemale (Muhl. Ex Willd.) Torr., Hiram Frederick Thut May 1949

Aplectrum Hyemale (Muhl. Ex Willd.) Torr., Hiram Frederick Thut

Specimens by Name

No abstract provided.


Kentucky Warbler (Vol. 25, No. 2), Kentucky Library Research Collections May 1949

Kentucky Warbler (Vol. 25, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Kentucky Warbler (Vol. 25, No. 1), Kentucky Library Research Collections May 1949

Kentucky Warbler (Vol. 25, No. 1), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Hybanthus Concolor (T.F. Forst.) Spreng., Ernest L. Stover May 1949

Hybanthus Concolor (T.F. Forst.) Spreng., Ernest L. Stover

Specimens by Name

No abstract provided.


North And South Dakota Horticulture, May 1949, North And South Dakota State Horticultural Societies May 1949

North And South Dakota Horticulture, May 1949, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 22, Number 5

Black-Throated Green Warbler, Dr. O.A. Stevens
Newslants, H.A. Graves
Garden Notes, W.E.H. Porter
Manitoba News Letter, W.R. Leslie
Garden Club Gleanings, Mrs. G.M. Jorgensen
Fruit and Vegetable Notes, F.X. Wallner
Book Reviews, Mrs. Morris Harter
Secretary's Corner, W.A. Simmons
Beekeeping Notes, A.G. Pastian


The Effects Of Fertilizer And Moisture On The Yield Of Sweet Corn, Rex F. Nielson May 1949

The Effects Of Fertilizer And Moisture On The Yield Of Sweet Corn, Rex F. Nielson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sweet corn is rapidly becoming an important cash crop in many of the irrigated regions of the intermountain West. The lacome from this crop is relatively small in comparison to that from other major agricultural products; however, sweet corn production has a definite place in the economy of the region.

One of the factors limiting increasing acreage of sweet corn in many areas is low yields. Yields have been increased naterially in recent years with the development of hybrid varieties, superior to the standard varieties previously used. Better cultural practices are improving yields, but much remains to be done in …


A Study Of Semisterility And Its Lineage Relationships In Translocation Stocks Of Barley, Horace Marr Waddoups May 1949

A Study Of Semisterility And Its Lineage Relationships In Translocation Stocks Of Barley, Horace Marr Waddoups

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Barley (Hordrium sp.) is the most important spring sown cereal crop in Utah, both in acreage and in yield of total digestible nutrients per unit area. It also rates high as a feed crop in the United States. For this reason it is important that varieties are available which are high in yield, high in quality, and disease resistant, along with other desirable characteristics. In order to work toward this end most efficiently, it is first necessary that the genetics of the barley plant be worked out.


The Effect Of Time, Quantity, And Kind Of Irrigation On The Yield Of Sugar Beets, Delos Boyd Archibald May 1949

The Effect Of Time, Quantity, And Kind Of Irrigation On The Yield Of Sugar Beets, Delos Boyd Archibald

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Investigations on factors affecting yield of sugar beets during the past two years at Newton and Garland, Utah, have shown two outstanding facts about irrigating sugar beets. First, the amount of water applied may not be as important as the time at which they receive it. Second, sugar beets should not be made to suffer for water in the early part of their growing season.

These observations suggest the need for further studies on method, time and quantity of irrigation. Further information on the most economical use of irrigation water for sugar beets would be of great value to the …


Emergence And Survival Of Four Introduced Wheatgrasses As Influenced By Rate And Season Of Planting On Abandoned Farm Lands Of Utah, Donald N. Hyder May 1949

Emergence And Survival Of Four Introduced Wheatgrasses As Influenced By Rate And Season Of Planting On Abandoned Farm Lands Of Utah, Donald N. Hyder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A great deal has been accomplished in developing methods of restoring abused lands through seeding, yet there is much to be desired in refinement of techniques and in substantiation of previous experimental results. Controversial opinions as to the best season of planting indicate that additional trials are needed. New species need to be introduced, developed, and proved. Methods are needed which lead to more efficient utilization of those factors limiting the degree of success in establishment. Since moisture is the most predominant limiting factor throughout the arid and semi-arid range land, special attention is given to more efficient utilization of …


A Preliminary Study Of The Siphonapterous Ectoparasites Found On The Mammals Of The Families Cricetidae And Muridae In Utah County, Vernon J. Tipton May 1949

A Preliminary Study Of The Siphonapterous Ectoparasites Found On The Mammals Of The Families Cricetidae And Muridae In Utah County, Vernon J. Tipton

Theses and Dissertations

The purpose of this study was to determine the species of fleas infesting the mammals of the families Cricetidae and Muridae in Utah County. This was accomplished by establishing twelve collecting stations throughout the county from which 198 mammals were collected. From these hosts, 392 fleas were collected representing three families, nineteen genera , and twenty-four species. Four species are new to the State of Utah and twenty-two species are recorded from Utah County for the first time.


Seed And Forage Production In Four Clonal Lines Of Alfalfa As Influenced By Lygus Infestation, John Keith Noyes May 1949

Seed And Forage Production In Four Clonal Lines Of Alfalfa As Influenced By Lygus Infestation, John Keith Noyes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

No other forage crop cultivated in the United States can be used in as many ways as alfalfa. The variety of its uses make it a most useful forage crop.

The distribution of alfalfa is world wide and it plays a leading role in the production of livestock and their products. For general feeding of farm animals, alfalfa is unsurpassed. Used for pasture, it has a high capacity, which leads to large gains in grasing animals. If properly rotated and cared for, it adds nitrogen to the soil in a form that is available to plants and thereby increases crop …


The Comparative Value Of Commercial Phosphoric Acid As A Fertilizer, Bruce L. Baird May 1949

The Comparative Value Of Commercial Phosphoric Acid As A Fertilizer, Bruce L. Baird

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The practice of applying fertilizers to the soil by adding the liquid form to the irrigation water is increasing in popularity. There are several advantages maintained for such a method of application. Some of the advantages are:

(A) Ease of application.

(B) No special equipment is required for application.

(C) The fertilizer can be applied at any stage of plant growth without physical disturbance of the plant.

(D) Penetration into the root zone may be greater than the dry fertilizers.

Considerable phosphate fertilizer is used on soils of irrigated regions. If the behavior of liquid phosphoric acid after its incorporation …


A Greenhouse Study Of Response Of Barley, Corn, And Rye To Minor Elements Grown On Soil From The Tennessee Agricultural And Industrial State College Farm, Grover C. Books May 1949

A Greenhouse Study Of Response Of Barley, Corn, And Rye To Minor Elements Grown On Soil From The Tennessee Agricultural And Industrial State College Farm, Grover C. Books

Tennessee State University Alumni Theses and Dissertations

No abstract provided.


The Diet And Daily Forage Consumption Of An Experimental Herd Of Sheep On Utah's Winter Range, Lee A. Sharp May 1949

The Diet And Daily Forage Consumption Of An Experimental Herd Of Sheep On Utah's Winter Range, Lee A. Sharp

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The forage produced on Utah’s winter range is generally deficient in some nutrients that are required for the phase of sheep production that takes place on these ranges. This forage need only supply little more than maintenance ration, but because of low forage production on these areas and generally low quality forage, these requirements often are not met.


The Introduced Fishes, Game Birds, And Game And Fur-Bearing Mammals Of Utah, Boris Hewitt Popov May 1949

The Introduced Fishes, Game Birds, And Game And Fur-Bearing Mammals Of Utah, Boris Hewitt Popov

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For a number of years wildlife workers have realized the importance of the past histories of introduced species. Emphasis in recent years has been directed toward introductions because of the tremendous hunting and fishing pressures. Yearly increases in numbers of hunters and fishermen have been noted in Utah for the past forty years. It is hoped that this compilation of the histories of the introduced game and fish species of Utah will be of value to sportsmen and wildlife managers alike in planning future introductions.

The material included in this paper was obtained from United States Government reports, Utah Territorial …


Consumptive Use Of Water Studies In The Colorado River Area Of Utah, J. Y. Christiansen May 1949

Consumptive Use Of Water Studies In The Colorado River Area Of Utah, J. Y. Christiansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

At the request of the State Engineer of Utah, a cooperative study beginning January 1, 1948, was initiated by the Utah Agricultural Experiment Station and the Division of Irrigation, U. S. Soil Conservation Service. These research agencies are being assisted financially, and by consultation, by the State Engineer who has also made arrangements for certain observations to be made and furnished by the U. S. Geological Survey, U. S. Weather Bureau, and the U. S. Bureau of Reclamation. The objective of this study is to obtain basic information regarding the consumptive use of water by agricultural crops, native vegetation, and …


A Comparative Study Of Hydrogen Peroxide In Treating Milk For Cheddar Cheese Making, Mounir Ramzi Nagmoush May 1949

A Comparative Study Of Hydrogen Peroxide In Treating Milk For Cheddar Cheese Making, Mounir Ramzi Nagmoush

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In many countries of the world and in some parts of the United States milk is produced which has a high bacterial contamination. Such milk of undesirable quality is frequently delivered to factories engaged in the manufacture of cheddar cheese. This milk commonly contains large numbers of lactic acid-producing bacteria or other types of microorganisms which cause objectionable flavors and textural defects in the cheese. The improvement of the quality of milk supply under some conditions is a matter of great difficulty so that the manufacture of inferior quality milk into cheese is a problem often encountered.

In the United …


Inheritance Studies In Stem Rust Of Wheat, Sayed Bad Shah May 1949

Inheritance Studies In Stem Rust Of Wheat, Sayed Bad Shah

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wheat is an important food crop of the world, especially in Soviet Russia, U.S.A., China, India and Pakistan. Over one billion bushels of wheat are produced annually in U.S.A. The total area under wheat production in Pakistan during 1947-48 was 10 million acres with an average yield of 12 bushels per acre.

The stem rust disease has been known for along time to be destructive to grain crops, even centuries before the Christian era. Rust is of major importance in both the U.S. and Pakistan. Jethro Tull recorded rust in England in 1725. In 1916, rust was serious over the …


An Evaluation Of Trout Stocking In The Logan River Drainage, Nels Andrew Thoreson May 1949

An Evaluation Of Trout Stocking In The Logan River Drainage, Nels Andrew Thoreson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the more important forms of recreation in Utah is fishing. Each year since the end of World War II more than 100,000 resident and 4,000 non-resident fishermen have taken to the streams and lakes of this state. They spend approximately $2,200,000 each year in the quest of fish, mostly trout. In 1916, 25,473 licenses were sold, in 1937 the number of licenses had risen to 41,200, in 1945 the sales amounted to 104,000 and in 1947 had increased to nearly 131,000. Because of the increased number of fishermen each year, the desirability of greater numbers of legal-sized fish …


Some Factors Associated With The Economic Feasibility Of Reseeding Privately-Owned Cattle Ranges In Utah, James R. Gray May 1949

Some Factors Associated With The Economic Feasibility Of Reseeding Privately-Owned Cattle Ranges In Utah, James R. Gray

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The forage depletion of western ranges which has occurred during the past century is partly the result of the belief by ranchers that the forage loss was temporary and not serious. Should more forage of a high quality be desired they thought it could be produced by reseeding the ranges. The native western forages, never abundant or luxurious by eastern concepts, nevertheless were of generally high qualities. Limited by low and erratically distributed precipitation, the sparse native forages have in many areas given way to low quality plants. These plants of low quality do not have to withstand the adverse …


Monthly Report Of Teacher Of Vocational Agriculture, Bruce Hargrove Apr 1949

Monthly Report Of Teacher Of Vocational Agriculture, Bruce Hargrove

Documents

Monthly Report of Teacher of Vocational Agriculture, Bruce Hargrove, Robeson County Training School. Division of Vocational Education, State Dept. Public Instruction, Raleigh, N. C.


Viola Pubescens Aiton, Joseph M. Diel Apr 1949

Viola Pubescens Aiton, Joseph M. Diel

Specimens by Name

No abstract provided.


Viola Pedatifida G. Don, Joseph M. Diel Apr 1949

Viola Pedatifida G. Don, Joseph M. Diel

Specimens by Name

No abstract provided.


Viola Pratincola Greene, Joseph M. Diel Apr 1949

Viola Pratincola Greene, Joseph M. Diel

Specimens by Name

No abstract provided.


Viola Sororia Willd., Joseph M. Diel Apr 1949

Viola Sororia Willd., Joseph M. Diel

Specimens by Name

No abstract provided.


Viola Missouriensis Greene, Julius R. Swayne Apr 1949

Viola Missouriensis Greene, Julius R. Swayne

Specimens by Name

No abstract provided.


The Sixty-First Session Of The Iowa Academy Of Science, April 15 And 16, 1949, Iowa Academy Of Science Apr 1949

The Sixty-First Session Of The Iowa Academy Of Science, April 15 And 16, 1949, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.