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Comparison Of Coyote And Coyote × Dog Hybrid Food Habits In Southeastern Nebraska, Brian R. Mahan

University of Nebraska State Museum: Mammalogy Papers

The recent taxonomic study by Mahan et al. (1978) documented the occurrence of coyote (Canis latrans) x dog (c. familiaris) hybrids in Nebraska. This study, and those by Freeman (1976) in Oklahoma and Gipson et al. (1974) in Arkansas show coyote x dog hybrids, though not abundant, to be numerous in some areas. The purpose of the present study was to compare the stomach contents of coyote x dog hybrids collected by Mahan et al. (1978) from southeastern Nebraska with those of contemporary coyotes.

Stomachs of 12 coyote x dog hybrids and 16 coyotes collected November 1975 …

Foods Of Juvenile, Brood Hen, And Post-Breeding Pintails In North Dakota, Gary Krapu, George Swanson

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

The Pintail (Anas acuta) is a common to abundant nesting species in North Dakota, becoming more numerous during years of favorable water conditions and less so during drought. Stewart and Kantrud (1974) estimated breeding-populations of 304,000, 111,000 and 379,000 pairs in the Prairie Pothole Region of North Dakota during 1967-69, respectively. We studied food habits of juvenile and adult Pintails during the brood-rearing and post-breeding periods in North Dakota to learn their food requirements during these phases of the life cycle. Food habits of flightless juveniles have been studied in Alberta (Sugden 1973) and limited information on downy …

Beef Cattle Feedlot Runoff And Control In Eastern Nebraska, L. P. Schram, Lynn R. Shuyler

United States Environmental Protection Agency: Publications

This study was initiated to determine operational characteristics of runoff control facility components for beef cattle feedlots.

A runoff control facility was designed and constructed for a 3,000 head capacity feedlot in eastern Nebraska. Components of the runoff control facility included debris basins inside the pen and outside the pen, a holding pond, and a disposal system.

Results indicated that design volumes for the debris basins and holding ponds were effective in controlling runoff from the lots caused by snowmelt and rainfall for climatic conditions within eastern Nebraska. Characteristics of runoff transported solids from this large lot compared favorably with …

Agricultural Experiment Station News August 1977

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - July 1977
BULLETINS PRINTED

Farm, Ranch And Home Quarterly Institute Of Agriculture And Natural Resources, University Of Nebraska- Lincoln

Farm, Ranch and Home Quarterly

In this issue:

A Message from the Vice Chancellor................ 2

Needling Makes Beef More Tender .......................... 3

Detecting Herbicide Carryover in Soil ........................ 4

Roadside Marketing........................... 6

Many Uses Found for Geologic Maps ........................ 8

Nebraska Moves Ahead .................................... 10

Resistant Alfalfa Varieties Sought by Researchers ................................ 12

Kids Having Kids ................................... 14

Psuedorabies Virus Causes Producers Severe Losses ........................... 16

Corn or Grain Sorghum? ................................... 19

Don't Fool-Cooperate with Mother Nature ........................ 21

Sulfur Can Boost Corn Yields on Sandy Soils ........................... 23

Water Current, Volume 9, No. 4, July/August 1977

Water Current Newsletter

University to Assist Legislature in Consideration of Water Policy Alternatives
Conference on Decision Making in Water Resources
Contract Awarded by Corps of Engineers
Nebraska Water Levels Decline
Test-Hole Drilling Begins
Water Resources Policy Study
ICWP - OWRT Technology Transfer Project
Water Research Bill Approved by House
Research Review: Corrosion in Irrigation Water Distribution Systems

Runoff And Erosion Characteristics Of Surface-Mined Sites In Western North Dakota, John E. Gilley, G. W. Gee, A. Bauer, W. O. Willis, R. A. Young

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A rainfall simulator was used to measure runoff and erosion from rangeland, spoil and topsoil sites. Measured soil losses were greatest on bare topsoil plots and least on the non-cultivated rangeland site. Application of a straw mulch reduced erosion on topsoil by over 90 percent. However, the meausred erosion and runoff values from the mulched topsoil sites were still over 50 percent higher than from the rangeland site.

Assay Of P-Hydroxybenzaldehyde As A Measure Of Hydrocyanic Acid Potential, Herman J. Gorz, W. L. Haag, J. E. Specht, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

A method of assessing the hydrocyanic acid potential (HCN-p) of sudangrass [Sorghum sudanense (Piper) Stapfl and sorghum [S. bicolor (L.) Moench] seedlings is described. This procedure is based on the determination of p-hydroxybenzaldehyde (p-HB), which is released upon hydrolysis of dhurrin, the cyanogen normally present in plants of Sorghum species. Extraction and hydrolysis of dhurrin are accomplished by autoclaving young leaf tissue in water. The content of p-HB in the aqueous extract is then determined by spectrophotometric assay in alkaline solution at 330 nm. Uniform samples for the comparison of widely divergent genotypes are obtained by using …

91st 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

Germ Plasm Evaluationprogram- Progress Report No. 5, U.S. Meat Animal Research Center

Roman L. Hruska U.S. Meat Animal Research Center: Reports

The cattle Germ Plasm Evaluation Program has been conducted in three cycles. Cycle I involved breeding Hereford, Angus, Jersey, South Devon, Limousin, Simmental and Charolais bulls by artificial insemination (AI) to Hereford and Angus cows to produce three calf crops (Cycle I, Phase 2) in the spring of 1970, 1971 and 1972.

Cycle II, initiated with the 1972 breeding season, involved the Hereford and Angus cows used in the first cycle. These cows were bred by AI to Hereford, Angus, Red Poll, Brown Swiss, Gelbvieh, Maine Anjou and Chianina sires to produce two calf crops (Cycle II, Phase 2) in …

Agricultural Experiment Station News June 1977

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – May 1977
BULLETINS PRINTED

Sex And Violence: Can Research Have It Both Ways?, Richard A. Dienstbier

Department of Psychology: Faculty Publications

During the last decade, the literature on media exposure has been dominated by a single theoretical system of personality functioning—the social learning model. The model emphasizes that the disinhibition of already-learned behavior, the learning of new behaviors, and the establishment of patterns of personality result from observing the behavior of other people (models) and from vicarious reinforcement upon viewing those models successfully engaging in rewarded sequences of behavior.

It is a tribute to the degree to which social learning oriented psychologists have successfully influenced intellectual and governmental thinking that the model is seldom questioned as providing the appropriate basis for …

Temperatures Of Alfalfa, Sorghum, Soybean And Grass As Measured With Leaf Thermocouples And An Infrared Thermometer, Silvio Steinmetz

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

The Prairie Naturalist Volume 9, No. 2. June 1977

The Prairie Naturalist

PROPAGULE DISPERSAL AMONG FOREST ISLANDS IN SOUTHEASTERN SOUTH DAKOTA ▪ J. W. Ranney and W. C. Johnson

GENERAL WEATHER CONSIDERATIONS FOR THE PRESCRIDED BURNING OF PRAIRIE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky and R. W. Sands

YELLOW-CROWNED NIGHT HERONS SIGHTED IN NORTH DAKOTA ▪ D. G. Jorde, G. L. Krapu, and R. K. Green

Stability Of Perceived Tension As A Function Of The Menstrual Cycle, Paula Englander-Golden, Keith A. Willis, Richard A. Dienstbier

Department of Psychology: Faculty Publications

The stability of tension judgments among males and females who were either taking or not taking combination low-progestin oral contraceptive pills was investigated. Judgments of interpersonal pressure in videotaped vignettes provided tension measures. The vignettes were presented in two sessions separated by two weeks. Correlations between pressure judgments of .94 for males, .79 for pill females and .40 for non-pill females (all sig < .002) supported the prediction that non-pill females experience the largest fluctuations in tension across the menstrual cycle. A significant number of non-pill females who changed their scores and who changed from midcycle to premenstrual-menstrual phases or vice versa between the two experimental sessions shifted their tension scores in the predicted direction (p < .04). As predicted, non-pill females scoring in the lower half on premenstrual-menstrual symptomatology were more consistent in pressure judgments than those high on symptomatology, with correlations of .51 (sig < .004) and .24 (NS) respectively. Analysis of pressure judgments as a function of menstrual phase and high-low symptomatology indicated a main effect for symptomatology (sig < .01) with the high group perceiving more pressure. Lack of a main effect for menstrual phase was attributed to large individual variations in tension scores. Results were interpreted as indicating physiological causality underlying the variability in tension across the menstrual cycle. Substituting the Repression-Sensitization dimension for symptomatology yielded no significant results which could lead to a psychological interpretation of such variability.

Agricultural Experiment Station News May 1977

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – April 1977

Agricultural Experiment Station News April 1977

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GENERAL NOTES
GRANTS AND CONTRACTS
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - March 1977
BULLETINS PRINTED

Aspergillosis In Common Crows In Nebraska, 1974, Joseph Zinkl, Joseph Hyland, James Hurt

Nebraska Game and Parks Commission: Staff Research Publications

During fall 1974, approximately 1,000 to 1,500 common crows (Corvus brachynhvnchos) died of aspergillosis in south-central Nebraska. The binds were debilitated, lethargic and dyspneic. On necropsy, typical lesions of aspergillosis were found in the lungs and air sacs. Histopathologic examination revealed granulomatous lesions around fungal hyphae in the respiratory system.

The Immunizing Potential Of Sporulated Oocysts Of Eimeria Nieschulzi Exposed To Heat And Co-60 Gamma-Radiation, George A. Conder, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Sporulated oocysts of Eimeria nieschulzi Dieben 1924, a rat coccidium, were exposed to radiation, heat, or both in an effort to attenuate the parasite. Moderate levels of each treatment or combination thereof attenuated the parasite, reduced pathogenesis (as judged by oocyst discharge during primary infection), and produced immunity to challenge when the oocysts were subsequently inoculated into rats. Thus, heat- and/or radiation-treated E. nieschulzi oocysts fed to rats could reduce pathogenesis during a primary infection and yet give good homologous protection.

Microtine Damage In Michigan Apple Orchards, Walt Conley, Craig S. Killian

Eastern Pine and Meadow Vole Symposia

The object of this study was to provide an estimate of the financial losses caused in Michigan's apple orchards by members of the genus Miarotus, and, if possible, to discover some of the factors affecting the amount of damage. Information was collected from apple growers and from direct observation of 1,520 Michigan apple trees. Data was collected concerning the winters of 1972-73 and 1973-74. Both of these years were characterized hy relatively low populations of microtine rodents in Michigan.

Thevole Problem In Pennsylvania Apple Orchards, George M. Greene

Eastern Pine and Meadow Vole Symposia

At the present time voles are the single most destructive pest in apple orchards in Pennsylvania. No other pest can inflict the type of damage that can kill apple trees as surely as girdling. Orcharding involves tremendous investments ($2,000 - $3,000 per acre) and these investments are being seriously threatened by localized outbreaks of pine and meadow vole infestations.

Development Of Pp581 Rodenticide By Ici-United States, Inc., Dale E. Kaukeinen

Eastern Pine and Meadow Vole Symposia

The Agricultural Chemicals Division of ICI-US was formed in 1970 and is closely tied with Plant Protection Division (PPD) in England. PPD has world-wide responsibility for research, development and marketing of agricultural crop protection chemicals including herbicides, insecticides, fungicides, nematocides, plant growth regulators, and rodenticides. Past achievements have included 2,4-D, Paraquat, Diquat, and BHC, among others. Experimental compounds from the U.K. are evaluated and developed for the U.S. by the Biological Research Center at Goldsboro, N.C. Facilities on this 250 acre site include fully-equipped laboratories for the formulation, research, development, and residue departments. Field trials can be carried out on …

Pine And Meadow Research In Pennsylvania Relevant To Control In Orchards, Robert G. Anthony

Eastern Pine and Meadow Vole Symposia

Results from field studies and questionnaires mailed to commercial orchardists in Pennsylvania indicate use of orchards by wildlife poses management problems for orchardists, horticulturists, county extension agents, and wildlife managers. Data substantiate the detriment of wildlife to orchard trees and fruits as viewed by commercial orchardists. In addition, existing control methods are often inconsistent and ineffective and necessitate use of toxic substances which may have far-reaching environmental effects. Consequently, a need for sounder management of wildlife in orchards is apparent. Studies at The Pennsylvania State University have focused on: (1) surveys on the extent and severity of wildlife damage in …

Mouse Damage, A Serious Problem For The Virginia Apple Industry, C. Purcell Mccue Jr.

Eastern Pine and Meadow Vole Symposia

The 1972 Apple and Peach Tree Survey indicated that there were 1.6 million apple trees in Virginia. Dr. J. B. Bell and Dr. J. M. Johnson report that based on information from the Statistical Reporting Service and the Economic Research Service that the average per year market value of the 1973-74-75 Virginia Apple crop was $109,160,000. This value consists of the farm value of $28 million plus packing, storage, processing, and other marketing services. It is estimated that mouse damage to apple trees reduces the output in Virginia by 10% per year or a potential loss of $11,000,000 annually for …

Progress In Pine Vole Ecological Research And Its Relevance To Damage Control, R. L. Kirkpatrick, R. E. Noffsinger

Eastern Pine and Meadow Vole Symposia

LaVoie and Tietjen (1971) pointed to the "paucity of quantitative data concerning vital phases of the life history of the pine vole" as one possible reason for our lack of progress in controlling pine vole damage. They suggested that pine voles do not seem to be readily adaptable to a wide range of habitat types and conditions and that this lack of adaptive ability might be exploited in their control by manipulation of limiting factors in their habitat. They also suggested a balanced program of research which would include studies of vole populations, their habits and their habitats as well …

The Role Of The Fish And Wildlife Service Research In Solving The Eastern Pine Vole/Orchard Problem, Richard N. Smith

Eastern Pine and Meadow Vole Symposia

Many orchardists, nurserymen and Christmas tree grcwers, State extension agents, and a few Fish and Wildlife Service people are aware of the economic problems that pine voles (microtus pinetorum) cause to orchards in the Appalachian Regions of the United States. This is expected for these people have had to deal first hand with economic losses caused by these small mammals. What is unusual and somewhat discouraging is that this problem was identified over forty years ago and that we really know little more about this animal now than we did then.

Pine Voles (Pitymys Pinetorum) And Orchard Damage Research: An Overview Of The N.Y. Coop Wildlife Research Program In Animal Damage, Milo Richmond, Robert Stehn, Mary Dunlay

Eastern Pine and Meadow Vole Symposia

We began our research effort in 1968 with a project aimed at determining the efficacy of endrin treatment for pine vole control. Grower concerns and a small amount of laboratory data indicated that endrin was no longer as reliable in controlling pine voles as it was in the early sixties. Our initial efforts were twofold. We sought first to determine the existing efficacy of endrin and secondly to evaluate any resistance by pine voles to this chemical control procedure. Unfortunately, this entire endrin research effort was dropped by the Cooperative Research Unit when endrin as well as other persistent chlorinated …

Population Dynamics And Reproduction In Virginia Meadow Voles, Robert K. Rose

Eastern Pine and Meadow Vole Symposia

This paper describes changes in important demographic parameters of a grassland (non-orchard) population of the meadow vole (M. pennsylvanicus) studied since November 1974 near Charlottesville in piedmont Virginia. (This study was supported by the Dept of Biology of the University of Virginia until August 1976, and is now the joint project with Ray D. Dueser, Dept of Environmental Sciences, UVA, and is supported by our respective departments.) Methods used are similar to those of C.J. Krebs, and require weekly live-trapping during which each vole is weighed and assessed for reproductive state and new voles are tagged. Such information has been …

The Pine Vole Control Problem In Eastern New York Apple Orchards, Warren H. Smith

Eastern Pine and Meadow Vole Symposia

Pine voles have always been a problem in a few orchards in Eastern New York. In the past the vole population was controlled with Endrin, and damage to trees, although significant, was tolerable. From 1970 to 1972 more and more complaints were heard from growers concerning Pine vole damage to apple trees. Apparently as vole populations increased and damage became more serious, the word spread among growers and an awareness within the fruit growing community concerning the pine vole problem was generated. It is interesting to note that during this period when pine voles population seem to increase, Endrin was …

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Eastern Pine and Meadow Vole Symposia

Registration List