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Systematic Status Of The Mastiff Bat, Eumops Perotis Renatae Pirlot, 1965, James D. Smith, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

The mastiff bat, Eumops perotis renatae, described by Pirlot in 1966 and later elevated to specific status by the same author is herein regarded as junior synonym of Eumops perotis perotis (Schinz, 1821). Earlier reports of large Eumops from South America are reviewed in light of the present understanding of the relationship between Eumops perotis and E. trurnbulli.

Late Middle Ordovician Graptolites From The Subsurface Of Eastern Nebraska, M. P. Carlson, W. B.N. Berry

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Cultural Manipulation For Higher Yields, William Duncan

Department of Agronomy and Horticulture: Faculty Publications

By cultural manipulation we will mean, in a broad sense, everything a farmer might do to increase crop yields per hectare, after he decides what to plant and buys the seed. With this restriction we leave out the agricultural economist and the plant breeder. When we limit our interest to yields per hectare we introduce an element of area. This will include the crop canopy above the surface and the root system below it. Cultural manipulation also includes what the farmer might do to make best use of water, carbon dioxide, nitrogen, and essential mineral nutrients whether they occur naturally …

Plant Morphology And Stand Geometry In Relation To Nitrogen, Robert F. Chandler Jr.

Department of Agronomy and Horticulture: Faculty Publications

During the past decade, the importance of plant morphology and spacing in relation to nitrogen responsiveness in terms of crop yield has been increasingly recognized, particularly in the case of the cereal grains.
It is the purpose of this paper to present examples of experimental results obtained by rice research workers which support certain significant principles. Although this treatise will be confined to the rice plant (Oryza sativa L.),as Wittwer (1968) points out, the principles elucidated are applicable to many other crops, and particularly to the small grains, such as wheat (Triticum aestivum L.), oats (Avena sativa …

Rollins Adams Emerson (1873-1947) Horticulturist Pioneer Plant Geneticist Administrator Inspiring Student Adviser, Rosalind Morris

Department of Agronomy and Horticulture: Faculty Publications

The vigorous and highly productive life of Professor R. A. Emerson spanned 74 years and 7 months. His birth and death took place In New York State, but Nebraska nurtured his early development and schooling. He spent 15 years of his professional career at the University of Nebraska, followed by 33 years at Cornell University.

Rollins Adams Emerson, son of Charles David and Mary C. Adams Emerson (a direct descendant of Henry Adams), was born May 5, 1873 at Pillar Point, New York State on the eastern shore of Lake Ontario. In 1880 his family moved to Nebraska and settled …

Agricultural Experiment Station News December 1968

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
FIELD LABORATORY DEVELOPMENT - 1968
PERSONNEL ACTIONS
NEW GRANTS, CONTRACTS AND COOPERATIVE AGREEMENTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - DECEMBER 1968
STATION AND RESEARCH BULLETINS PRINTED

82nd Annual Report Of The Nebraska Agricultural Experiment Station

Agricultural Research Division: News and Annual Reports

Contents:
Foreword
Administration and Staff
Nebraska Agricultural Experiment Station Research Projects
Experiment Station Publications
Publications of the Staff
Report of Income and Expenditures

Mourning Dove Status Report, 1967, James L. Ruos, Duncan Mcdonald

United States Fish and Wildlife Service: Publications

Nationwide dove population indexes in the 1967 Mourning Dove Status Report were obtained by essentially the same data gathering and analyzing procedures as in 1966. A refinement was made in the base year index, using the mean of the 1966 and 1967 readings as the base for all States. There was a slight adjustment in physiographic region boundaries.

The Prairie Naturalist Volume 1, No.4. December 1969

The Prairie Naturalist

EDITORIAL: Restoring Beauty to the Human Environment ▪ Paul B. Kannowski

A REQUIEM FOR THE PRAIRIE ▪ Hugh H. Iltis

BIRDING IN MY BACK YARD ▪ Mrs. George A. Anderson

OCCURRENCE OF THE CECROPIA AND ROCKY MOUNTAIN SILK MOTHS IN SOUTHWESTERN NORTH DAKOTA ▪ James Oberfoell

Notes On Bats From The Mexican State Of Zacatecas, Hugh H. Genoways, J. Knox Jones Jr.

University of Nebraska State Museum: Mammalogy Papers

Much of the Mexican state of Zacatecas lies in the area ascribed to the Mexican Plateau. Along the western border and in the southwest, however, the state encompasses a portion of the Sierra Madre Occidental, and perhaps more importantly, from a zoogeographic view, the Rio Juchipila, a major tributary of the Rio Grande de Santiago, drains the southern "panhandle." The valley of the Juchipila supports tropical vegetation as perhaps do the valleys of several other smaller tributaries of the Rio Grande that barely reach the southern part of the state. The setting of southern Zacatecas suggests, therefore, considerable faunal diversity.

Rhizome And Tiller Development Of Kentucky Bluegrass (Poa Pratensis L.) As Influenced By Photoperiod, Cold Treatment, And Variety, Lowell E. Moser, S. R. Anderson, R. W. Miller

Department of Agronomy and Horticulture: Faculty Publications

Two controlled environment experiments were designed to study the effect of photoperiod and a cold treatment on rhizome and tiller development of ‘Merion’ and ‘Windsor’ Kentucky bluegrass (Poa pratensis L.) Evidence is given to support the following conclusions:

1. A cold treatment is not essential for rhizome formation. Cold treatments increased tillering but reduced the number of rhizomes.
2. Both initiation and elongation of rhizomes were favored by a 16 or 18-hour photoperiod when compared to a 8- or 12- hour photoperiod.
3. Tillering showed little response to initial photoperiod, although more tillers were formed with a 12-hour than …

Agricultural Experiment Station News October 1968

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
A NATIONAL ACADEMY OF AGRICULTURAL SCIENTISTS?
PERSONNEL ACTIONS
NEW GRANTS, CONTRACTS, AND COOPERATIVE AGREEMENTS
GENERAL NOTES
JOURNAL ARTICLES APPROVED IN OCTOBER

Western Corn Rootworm Egg Distribution And Adult Emergence Under Two Corn Tillage Systems, K. P. Pruess, G. T. Weekman, B. R. Somerhalder

Department of Entomology: Faculty Publications

Under a conventional plowing system, eggs of Diabrotica virgifera LeConte were more uniformly deposited in the top 6 inches of the soil profile than under a reduced strip-tillage system which resulted in heaviest egg deposition in the furrow or ridge. Equal numbers of eggs were deposited in both systems. After corn was planted, more eggs occurred in the seedling zone in conventionally planted corn; in till-plant corn, eggs were removed from the seed row, and eggs concentrated in the furrow were covered with additional soil. Adult emergence was 5–10 days later in till-plant corn than in the conventional tillage system.

Protein Synthesis During Fungal Spore Germination Ii. Aminoacyl-Soluble Ribonucleic Acid Synthetase Activities During Germination Of Botryodiplodia Theobromae Spores, James L. Van Etten, Robert Brambl

Department of Plant Pathology: Faculty Publications

The specific activities of 13 aminoacyl-soluble ribonucleic acid (sRNA) synthetases were measured at various time intervals during the germination of Botryodiplodia theobromae conidiospores. The enzyme activities were low or absent in ungerminated spores, and they increased rapidly as germination proceeded. When extracts of the ungerminated spores were prepared with mortar and pestle, very little or no enzyme activity was detected. When the extracts were prepared with a mechanical homogenizer, however, they exhibited some enzyme activity, although less than did the extracts from germinated spores. Enzyme activities from germinated spores were approximately the same, regardless of the method of preparation. The …

Whole Issue Nebraska Bird Review (Oct 1968) 36(4)

Nebraska Bird Review

TABLE OF CONTENTS

1968 (Forty-third) Spring Migration and Occurrence Report ......................70

Three Apparently New Records for Nebraska ......................76

Book Reviews...................... 78

Notes ......................81

Index of Volume XXXVI ......................85

Chemosterilants And Bird Control, M. R. Woulfe

Bird Control Seminars Proceedings

The total scope of chemosterilants is very wide so I will comment only on the pigeon chemosterilant developed by G.D. Searle & Co. and then briefly on the role of chemosterilants, generally, in bird control. Searle's ORNITROL (SC-12937, azacosterol) is a chemosterilant which in-hibits reproduction in the pigeon and is to be used as a means of controlling pigeon populations. It is fed as a treated whole corn bait (0.1%) for a period of ten days and inhibits reproduction for about six months. We recommend treat-ment in the early spring just before the onset of the peak reproduction season to …

A Review Of Parental Carrying Of Young By Waterfowl, Paul A. Johnsgard, Janet Kear

Papers in Ornithology

A review of literature reveals that published accounts of parental carrying among waterfowl are numerous and of diverse origins. Parental carrying on the back while swimming has been reliably seen in three species of swans, two sheldgeese, and at least seven species of ducks. Parental carrying of young in flight has also been reported for at least 16 species representing seven of the generally recognized waterfowl tribes. The majority of such accounts have involved carrying the young in the bill, a possibility that is somewhat substantiated by reliable observations of egg or eggshell carrying by females of several species. In …

Agricultural Experiment Station News September 1968

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTORS OFFICE
INTERDISCIPLINARY RESEARCH PROGRAMS
PERSONNEL ACTIONS
NEW GRANTS, CONTRACTS AND COOPERATIVE AGREEMENTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – September 1968

The Nebraska Economy: Manpower And Economic Growth, Ronald A. Wykstra

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

The economic growth of states and regions in the American economy follows divergent patterns. During the period from 1910 to 1950, for example, the labor force in Nebraska grew at a slower rate than did the national labor force. Nebraska had over onequarter of a million fewer workers than would have been the case if growth in Nebraska had occurred at the national rate. More recently it has been observed that employment in Nebraska increased 25 percent from 1939 to 1958. This increase does not compare favorably with the nation as an employment "growth gap" (the difference in state and …

The Prairie Naturalist Volume 1, No. 3. September, 1969

The Prairie Naturalist

EDITORIAL: A VOICE FOR CONSERVATION ▪ Paul B. Kannowski

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1968 ▪ Robert N. Randall

SOME ENVIRONMENTAL MANAGEMENT PROBLEMS AND PROPOSED SOLUTIONS ▪ Laurence R. Jahn

SOME PLANTS OF WESTERN MINNESOTA ▪ O. A. Stevens

MORTALITY OF MIGRATORY BIRDS AT GRAND FORKS, NORTH DAKOTA FOLLOWING A MOSQUITO CONTROL OPERATION IN MAY, 1969 ▪ Robert W. Seabloom, Lewis W. Oring and James R. Reilly

NESTING OF THE UPLAND PLOVER ON THE MISSOURI COTEAU ▪ K. F. Higgins, H. F. Duebbert and R. B. Oetting

NOTE

Albino sparrows discovered at Hazen, North Dakota ▪ Larry L. Kruckenberg and …

Mutation Induction In Melilotus Alba Annua By Chemical Mutagens, A. Kleinhofs, Herman J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Hydroxylamine (HA), 2-aminopurine (AP), 5-bromouracil (BU), and ethyl methanesulfonate (EMS) were tested for mutagenic activity on seeds of Melilotus alba annua. Mutants were classified into the following categories: o-hydroxycinnamic acid (o-HCA) content and β-glucosidase activity, chlorophyll deficiency, dwarf growth habit, and miscellaneous morphological variations. Due to difficulties in classification, the o-HCA and β-glucosidase category and the dwarf category were unreliable for determining mutation rates. Based on the chlorophyll-deficient and miscellaneous morphological categories, mutation rates for HA, AP, and BU treatments did not differ from the control rates, but EMS at 0.003M and 0.004M …

Agricultural Experiment Station News August 1968

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
REGIONAL RESEARCH
PERSONNEL ACTIONS
NEW GRANTS, CONTRACTS AND COOPERATIVE AGREEMENTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - AUGUST 1968

Relationship Between Protein And Ribonucleic Acid Synthesis During Outgrowth Of Spores Of Bacillus Cereus, S. Rodenberg, W. Steinberg, J. Piper, Kenneth W. Nickerson, J. Vary, R. Epstein, H.O. Halvorson

Papers in Microbiology

The rate of protein and ribonucleic acid (RNA) synthesis was examined during the outgrowth of spores of Bacillus cereus T in a chemically defined medium. RNA synthesis started 2.5 min after the initiation of germination, and protein synthesis after 4 min. Addition of a complete amino acid supplement and uracil supported high rates of RNA and protein synthesis throughout outgrowth. To determine the relationship between the rate of protein (k) and RNA synthesis, the kinetics of formation of various classes of RNA were followed during outgrowth. Ribosomal RNA (rRNA) comprised a relatively constant fraction of the total RNA …

A Water-Soluble Factor In Melilotus Officinalis Leaves Which Stimulates Feeding By The Adult Sweetclover Weevil, W. R. Akeson, Herman J. Gorz, Francis A. Haskins, G. R. Manglitz

Department of Agronomy and Horticulture: Faculty Publications

Akeson et al. (1967) reported that the water-methanol phase of a water-methanol-chloroform extract, obtained from leaves of Melilotus officinalis L. Lam. (variety Goldtop), stimulated extensive feeding by the sweetclover weevil, Sitona cylindricollis (Fähreus), on bioassay disks prepared from sweetclover roots. Subsequent studies have shown that a hot-water extract will elicit a similar response. When disks were treated only with the solvent used in extraction, an almost negligible amount of feeding was obtained. Thus, leaves of Goldtop sweetclover apparently contain one or more water-soluble feeding stimulants. Beck (1965) defined a feeding stimulant as a a stimulus tending to promote continuous feeding. …

Measuring Milk Flow Of Dairy Cows, G. H. Schmidt, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Milk flow measurements on 124 cows were analyzed to determine how they are affected by vacuum level, pulsation rate, pulsation ratio of the milking machine, and the breed, age, stage of lactation, and milk yield of the cow. Average rate of flow prior to machine stripping, yield during the first minute, and yield during the first 2 rain of milking were highly correlated with maximum rate of milk flow. These measurements were significantly increased by days in milk, vacuum level, pulsation rate, pulsation ratio, and total yield. Age at calving had a slight effect on yield during the first minute …

Relative Selection Efficiency In Retrospect Of Selected Young Sires, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

The indexes used in retrospect in estimating one-half genetic value (daughter superiority) of progeny of 541 Holstein matings contracted by Eastern Artificial Insemination Cooperative were determined. A set of information on relatives to be complete would include records of paternal sisters, the dam, paternal sisters of the dam, maternal sisters, maternal grandam, and maternal sisters of the dam. The average index of daughter superiority for the 541 progeny was between 406 and 455 kg of milk, depending on which combination of relatives was used. Paternal sisters accounted for 45 to 50% of the total daughter superiority. Records of maternal relatives, …

Agricultural Experiment Station News July 1968

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
FACILITIES• PROGRESS
PERSONNEL ACTIONS
NEW GRANTS, CONTRACTS, AND COOPERATIVE AGREEMENTS
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - JULY 1968

Whole Issue Nebraska Bird Review (July 1968) 36(3)

Nebraska Bird Review

TABLE OF CONTENTS

Avian Antagonistic Response to Potential Red-headed Woodpecker Predation .......................50

The Sixty-seventh Annual Meeting....................... 52

Additions to Lincoln County Checklist .......................54

Book Reviews....................... 57

1967 (Tenth) Fall Occurrence Report .......................58

Notes .......................67

Correction to 1967 Nebraska Nesting Survey .......................68

The "New" Cover .......................68

Possible Trivacancy Contribution To Ionic Conductivity, Robert Fuller, M.H. Reilly

Robert G. Fuller Publications

Fuller and Reilly [1], Fuller, Reilly, Marquardt and Wells [2], and Allnatt and Pantelis [3] have recently reported the results of measurements of the intrinsic electrical conductivity σ of RbCl, KCl and NaCl, respectively. All of these results showed an anomalous behavior of the log (σT) vs. T^-1 plot at temperatures near the melting points of the various crystals. It is the purpose of this note to discuss the suggestion [4] that the anomaly may be due to a trivacancy mechanism.

The plots of the log (σT) vs. T –1 were found to have too …

Two Feather Mite Genera (Analgoidea, Proctophyllodidae) From Birds Of The Families Oxyruncidae And Pipridae (Passeriformes, Tyranni), Warren T. Atyeo, J. Gaud

Bulletin of the University of Nebraska State Museum (1924–2023)

The genus Hemipterodectes Berla is redefined and the type species, H. squalocauda is figured. A new genus, Diproctophyllodes (type species, Proctophyllodes (Alloptes) dielytra Trouessert, 1885) is described; D. exquisita (Berla), 1959 is synomized with D. dielytra; and D. oxyrunci, new species, is described.