Life Sciences Commons^™

Relation Of Size Of Seed And Sprout Value To The Yield Of Small Grain Crops, T. A. Kiesselbach, C. A. Helm

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A superior yielding power has frequently been attributed to the extra large seed. Since the seeds of any given crop commonly differ markedly in size, it is of importance from the standpoint of crop production to know the extent to which this difference in size may affect the yield of the crop produced. The following experiments have been conducted for the purpose of contributing further to the information upon this subject.

The Entomologist, Edward Meyrick, T. D. A. Cockerell, E. A. Elliot, Selwyn Image, W. G. Sheldon, J. W. Metcalfe, H. D. Smart

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No abstract provided.

Descriptions And Records Of Bees - Lxxviii, T. D. A. Cockerell

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No abstract provided.

Studies Of The Etiology And Control Of Blister Canker On Apple Trees, J. Ralph Cooper

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The blister canker caused by Nummularia discreta Tul. is by far the most destructive disease of apple trees found in the United States. Serious damage due to this disease was first reported in Illinois in 1902. Since that time the disease has been reported to cause much damage in all apple-producing sections east of the Rocky Mountains. In Nebraska the disease is so prevalent that it is practically impossible to find an orchard free from it, and in many instances whole orchards have been destroyed thru its attacks. Because of the rapid dissemination and the destructive nature of blister canker, …

Studies Concerning The Elimination Of Experimental Error In Comparative Crop Tests, Theodore A. Kiesselbach

University of Nebraska-Lincoln Extension: Historical Materials

It is apparent that many sources of error have unconsciously entered into comparative crop yield tests. The very important matter of overcoming variation in soil conditions as a source of experimental error has been quite extensively studied and reported by various investigators during the past decade. The means suggested for reducing such error have been (1) repetition of plats and (2) correction of yields according to check plats planted to a uniform variety or treatment at stated intervals. Both methods have proved of value and a combination of both may often be used advantageously. Some danger always exists of error …

Descriptions And Records Of Bees - Lxxvii, T. D. A. Cockerell

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No abstract provided.

Circular No. 26 - Storing Vegetables For Winter, M. C. Merrill

UAES Circulars

The storing of vegetables for winter use has come to be important. The joys of having a large variety of choice garden produce available for the table at any time are no longer confined to growing season. Because we are thrifty today and plan for the morrow, we gather our crops in the fall and store them for winter use.

In spite of its importance, comparatively little research work has been done on the problems of storage. AS a result we are still employing many of the same methods that were devised by our forefathers, except in the case of …

Bulletin No. 161 - Orchard Heating, Frank L. West, N. E. Edlefsen

UAES Bulletins

In the state of Utah scarcely a year passes without some damage being done to farm crops, either in the spring or the fall, because of the occurrence of killing frosts. For example, in the spring of 1916 the tops of the young beets were frozen, about one-fourth of the grain of the northern part of the state was frozen, the yield of the first crop of alfalfa was about half normal and 90 per cent of the fruit of the state was destroyed. During the month when fruit buds are in bloom, the report of the U. S. Weather …

Boys' And Girls' Club Work, Agnes Morton

SDSU Extension Circulars

What is Club Work? It is an organized effort to awaken the interest of boys and girls in agriculture and industrial problems, to encourage them to increase the wealth of the community by the production and conservation of grain, meats, and vegetables through club activities, and to train their hands and minds by practice and instruction in various field and home projects.

The County Farm Bureau & County Agent In South Dakota, I. B. Johnson

SDSU Extension Circulars

The Farm Bureau and the County Agent movement was started in South Dakota in 1913 when Codington and Spink Counties organized for the purpose of securing the services of a County Agricultural Agent. This was two years prior to the enactment of the present South Dakota Farm Bureau law, but the farmers of those counties saw the value of Farm Bureau work and through personal efforts secured financial assistance from the county and the United States Department of Agriculture for employing a county agent. When the Smith-Lever Act was passed by Congress in 1914, it gave an immense impetus to …

A Synopsis Of The Sphecoidea Of Nebraska (Hymenoptera), Clarence E. Mickel

University Studies (University of Nebraska) (1888–1984)

The following paper is the result of three years more or less intermittent study and collecting of the entomophilous wasps of the superfamily Sphecoidea. In 1908, Mr. H. S. Smith published a list of Nebraska Sphecoidea together with synoptic tables, descriptions of new species and notes. The University of N ebraska collection of this group has more than doubled in size since 1908, the collection of Nebraska specimens now numbering about 7,000, while the entire collection of Sphecoidea includes between 8,000 and 9,000 specimens. This wealth of material has naturally increased the number of species known to occur within the …

Recent Lamb Feeding Investigations At The University Of Nebraska, H. J. Gramlich

Department of Animal Science: Faculty Publications

During the past several years considerable experimental work has been performed at the University of Nebraska in fattening western lambs. The attractiveness of fattening lambs at prices existing during a series of recent years has caused a material increase in the interest in this work, and we have felt justified in experimenting rather extensively to ascertain the most satisfactory combination of feeds to use under our Nebraska conditions.
The objects in view have been chiefly to ascertain the most satisfactory rations where corn and alfalfa hay constituted the basal feeds. We have used these two feeds extensively because of the …

Collecting Bees In Southern Texas, Wilmatte P. Cockerell

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No abstract provided.

The Carpenter Bees Of The Philippine Islands, T. D. A. Cockerell

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Descriptions And Records Of Bees - Lxxvi, T. D. A. Cockerell

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No abstract provided.

Bulletin No. 160 - Important Factors In The Operation Of Irrigated Utah Farms, E. B. Brossard

UAES Bulletins

Two agricultural problems that are fundamental and of prime importance to the people of Utah are:

1. The development to maximum economic agricultural production of those farms now operated.

2. The agricultural development of the many thousands of acres of new land in the state.

A realization of the importance of these problems caused this investigation to be made. The purpose of it is as follows :

1. To determine what has been the experience of practical farmers, relative to the most profitable systems of farm management on irrigated Utah farms, and to suggest profitable future development of the existing …

On The Structure And Classification Of North American Parasitic Worms, Henry Baldwin Ward

Harold W. Manter Laboratory of Parasitology: Library Materials

For many years I have been engaged in the study of parasitic worms from North American freshwater hosts, mostly fish; during this time I have had opportunity to examine and compare material from a large number of localities embracing many widely separated points. In this work I have been aided very greatly by studies on individual groups undertaken and published under my direction by various graduate students to whom my obligation is freely expressed here. In connection with this work it has been necessary to examine critically all original records of parasites from similar hosts and to endeavor to reach …

New Social Bees, T. D. A. Cockerell

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The Production Of Alfalfa Seed In Southern Idaho, L. C. Aicher

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The acreage given over to the production of alfalfa seed is rapidly increasing in Idaho because of the widespread interest throughout the east in growing alfalfa as a forage crop, the growing demand of eastern farmers for high-grade seed, and the higher prices obtainable since the beginning of the world war. In growing alfalfa farmers have discovered thru experience and heavy losses at times that it is more profitable to plant high-grade than inferior seed. In response to the demands of their customers and because of stringent weed laws of some states, seedsman are becoming more and more particular in …

Some Bees Of The Genus Psaenythia (Hym.), T. D. A. Cockerell

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Bulletin No. 158 - Soil Moisture Studies Under Dry-Farming, F. S. Harris, J. W. Jones

UAES Bulletins

Profitable cultivation of land under dry-farm conditions is dependent on the efficient use of precipitation. Soil fertility is not at present the limiting factor in crop production on most arid lands, but insufficient moisture to make available the fertility of these dry-lands is not only a limiting factor, but in most cases the controlling factor in crop production. The rainfall in the principal dry-farming areas of Utah varies from 12 to 15 inches a year. During different years it may range from 10 to 22 inches; therefore the best use must be made of the water that falls.

Bulletin No. 159 - Soil Moisture Studies Under Irrigation, F. S. Harris, A. F. Brakcen

UAES Bulletins

Under normal precipitation the variety of crops which can be successfully grown in the West is limited. Of necessity, irrigation was practised and with it came many complex problems. The water requirements of different crops, the water-holding capacity of soils, the movement of soil moisture, and numerous other related problems have given themselves up for investigational work.

Measuring Silage And Capacity Of Silos, L. W. Chase

Nebraska Agricultural Experiment Station: Historical Circulars

The condition of the corn at filling time, the rate of filling, and the length of time settling has taken place before measuring the depth of the silage, all tend to cause variations in the weight per cubic foot of the silage and in the tonnage that can be placed in a silo. The greatest variation comes when very green corn or very ripe corn is used, and because of this it is possible that a cubic foot of green silage, which may weigh fifty pounds, holds no more dry matter than a cubic foot of overripe silage which weighs …

Color And Color-Pattern Mechanism Of Tiger Beetles, Victor E. Shelford

University of Nebraska State Museum: Entomology Papers

In 1903 the writer undertook a study of variation of the tiger beetles. The work here presented is the outgrowth of this beginning, and indeed includes some small portions regarding color patterns that were written in that year. The work has been prolonged for many reasons, but chief of these was the very large number of species in the group and the fact that an adequate understanding of the material could not be attained without consulting many large collections. Further, the experimental results obtained in 1906 demanded a firsthand study of the variations of the species concerned and their natural …

Descriptions And Records Of Bees - Lxxv, T. D. A. Cockerell

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No abstract provided.

Bulletin No. 157 - The Irrigation Of Potatoes, F. S. Harris

UAES Bulletins

Very few field crops yield as large returns to the acre as do potatoes during favorable years, and but few crops are as greatly affected in quality and yield by soil and seasonal conditions. The potato is particularly sensitive to soil moisture. For this reason yields under irrigation, where the moisture can be controlled, are usually much higher than where the moisture supply is irregular.

Bulletin No. 155 - The Beet Leafhopper And The Curly-Leaf Disease That It Transmits, E. D. Ball

UAES Bulletins

The beet leafhopper (Eutettix tenella Baker), is the most serious pest of the western sugar beet. It has through the disease it tranmits caused periodic losses to the western sugarbeet industry, amounting in the aggregate to many millions of dollars. Curly-leaf, the disease which this insect transmits, has in some of its worst outbreaks caused the abandonment of thousands of acres of beets in certain districts and a serious reduction in tonnage of the remainder, so that the total loss in a single area has several times passed the million-dollar mark. Besides these striking and widespread outbreaks which fortunately have …

[Book Review Of] Adaptation In Metapopulations: How Interaction Changes Evolution, By Michael J. Wade., David C. Queller

Biology Faculty Research

Adaptation in Metapopulations: How Interaction Changes Evolution. By Michael J. Wade. Chicago (Illinois): University of Chicago Press . $120.00 (hardcover); $40.00 (paper). vii + 260 p.; ill.; index. ISBN: 978-0-226-12956-3 (hc); 978-0-226-12973-0 (pb); 978-0-226-12987-7 (eb). 2016.

Descriptions Of Fossil Insects, T. D. A. Cockerell

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Faunistic Survey Of A Limited Area In New Mexico, Louise Wilkinson, Hazel Fern Reeves

Biology ETDs

The subject of this thesis was suggested by Prof. A. O. Weese. It was chosen by the writers first because they were interested in the distribution and habits of animal life in New Mexico and second because they wished to learn more about classification and methods of classification of animal life in general.

It has been found that New Mexico does not afford so great a variety of animal life as compared with more moist regions but that it affords much more than a casual observation would indicate. Most of those which it affords are found in large numbers.

The …