Life Sciences Commons^™

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 …

Agricultural Experiment Station News July 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 – June 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

Aboriginal Exploitation Of Marine Food Resources, Alan J. Osborn

Anthropology Department: Theses

Anthropological interest in human exploitation of resources has increased considerably during the last decade. Archaeological and ethnological literature concerning man's utilization of the world's oceans is relatively abundant and there are now several on-going anthropological research programs, e.g., Aleutian Islands, Pacific Northwest Coast, California, Hawaii, Australia, New Zealand, Peru, Ecuador, Chile, and Southern Africa which focus primarily on maritime adaptations. The purpose of this study is threefold: (1) to suggest that anthropological assumptions regarding marine food resources and their use are inadequate; (2) to examine marine ecosystems with respect to structure and dynamics, primary productivity, ecological efficiencies, distributional and quantitative …

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

Age-Season Adjustment Factors Considering Herd Feeding Practices, G. R. Wiggans, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

The influence of percent of net energy in the herd's ration derived from concentrates on age-season effects was studied in New York Holstein Dairy Herd Improvement records. Ten feeding groups were defined by herd-feeding information. There was some increase in milk yield with an increasing proportion of concentrates in the ration. For six of these groups, the two highest, two middle, and two lowest in percent net energy from concentrates, age-season effects were calculated. The trends in age effects and seasonal effects were similar for all groups with the groups having a higher fraction of net energy from concentrates showing …

Whole Issue Nebraska Bird Review (June 1977) 45(2)

Nebraska Bird Review

TABLE OF CONTENTS

Great-tailed Grackles Nesting in Nebraska ......................................... 18

1976 (Nineteenth) Fall Occurrence Report ......................................... 18

The Seventy-sixth Annual Meeting ................................................ 30

Book Reviews .......................................................... 31

Note ....................................32

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

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

Interpolation For Extension Factors, G. R. Wiggans, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

A complete table of extension factors for all lengths of part records can be approximated closely from a much smaller table of reciprocals of the factors. The procedure is to use linear interpolation on the reciprocals from the small table. The required extension factor is the reciprocal of the result of interpolation. This procedure is more accurate than interpolation on the factors themselves since the reciprocals are more nearly linearly related to length of part record than are the extension factors themselves.

Memorial: Marvel L. Baker

Department of Animal Science: Faculty Publications

Marvel L. Baker, Professor Emeritus of Animal Science and Dean Emeritus of the College of Agriculture, University of Nebraska-Lincoln died April 20, 1977 after being in poor health for several months.

Callus And Suspension Cultures Of Melilotus Alba Tissues And Cells, Tomoaki Taira, Francis A. Haskins, Herman J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

These studies were designed to define conditions for the satisfactory establishment and maintenance of sweetclover (Melilotus alba Desr.) callus and cell suspension cultures. Callus was derived from cotyledons and hypocotyls of germinated sweetclover seeds of various genotypes. Under the conditions used, 2,4-dichlorophenoxyacetic acid (2,4-D) was effective (optimal concentration ca I mg/liter) for callus induction; other auxins and cytokinins were ineffective. Best callus growth occurred at a 2,4·D concentration of about 2 mg/liter and a sucrose concentration of 2%. Callus growth was improved by casein hydrolysate (0.9 g/liter). Glutamic acid appeared to be the most important single amino acid in …

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

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 and Staff 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.

An Analysis Of The Dependency Structure Between A Gilt's Prebreeding And Reproductive Traits. Ii. Principal Component Analysis, L. D. Young, R. K. Johnson, I. T. Omtvedt

Department of Animal Science: Faculty Publications

Seventeen variables measured before breeding and three measures of reproduction were taken on 339 purebred Duroc, Hampshire and Yorkshire gilts and 192 two-breed cross gilts resulting from matings among these breeds. Eight principal components accounted for 90% of the dependency structure existing among the 17 traits measured before breeding. Two principal components accounted for 97% of the dependency structure existing among the three reproductive traits.

The first principal component (PCll) from the prebreeding traits was a general measure of growth ability and accounted for 28% of the variation in the 17 measurements. The second principal component (PC12) contrasted slow growing …

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

An Analysis Of The Dependency Structure Between A Gilt's Prebreeding And Reproductive Traits. I. Phenotypic And Genetic Correlations, L. D. Young, R. K. Johnson, I. T. Omtvedt

Department of Animal Science: Faculty Publications

This study involved the records of 339 purebred Duroc, Hampshire and Yorkshire gilts and 192 two-breed cross gilts resulting from matings among the three breeds. The primary purpose of this paper was to investigate the relationship of prebreeding traits, including the growth of the gilt and her littermates, with subsequent measures of reproduction. Heritabilities were estimated for several traits and in general the estimates were somewhat higher than most estimates in the literature. Genetically, all measures of growth were favorably and moderately to highly correlated to ovulation rate, with the relationship being stronger for traits measured late in growth as …

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

International 4-H Youth Exchange ............................ 3

When Sudden Infant Death Strikes ........................... 4

Have You Been Duped? .................................... 6

Rain or Drought-Your Guess or Mine? ....................... 8

Becoming the Me I'd Like to. Be .............................. 10

TLC for Your Plants ........................................ 12

AgriScope ................................................. 15

Wheat Leaf Rust Attacks Crap Yields .......................... 16

Small Beef Packers Undergo. Changes ......................... 18

Energy Impacts on Nebraska Agriculture ...................... 20

Irrigation Scheduling Saves Time and Money .................. 22

Growing Degree Days Predictions For Corn And Sorghum Development And Some Applications To Crop Production In Nebraska, R. E. Neild, M. W. Seeley

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The concept of growing degree days (GDD) originated with observations by Reamur (1735) that plant development is more closely related to the temperature accumulated to a given stage than with time alone. It was not until nearly 200 years later, however, that Merriam (1894), Livingston (1916) and Klages (1942) began to use temperature accumulations in plant distribution studies and in crop geography. In the early 1950's, a system involving growing degree days became widely used in the canning industry to schedule plantings and thus control time of harvest of rapidly maturing vegetables. This system provided a more precise control of …

Whole Issue Nebraska Bird Review (March 1977) 45(1)

Nebraska Bird Review

Table of Contents

1976 Treasurers Report ...................2

1976 Nebraska Nesting Survey ...................3

Wild Turkeys in the Fontenelle Forest Area ...................6

1976 Christmas Count ...................7

A Groove-billed Ani and other Birds in Cuming and Doge Counties ...................13

Book Reviews ...................14

Notes ...................15

Agricultural Experiment Station News March 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 – February 1977
BULLETINS PRINTED

The Prairie Naturalist Volume 9, No. 1. March 1977

The Prairie Naturalist

NESTING BY FERRUGINOUS HAWKS AND OTHER RAPTORS ON HIGH VOLTAGE POWERLINE TOWERS ▪ D. S. Gilmer and J. M. Wiebe

ARTHROPODS CONSUMED BY AN IMMATURE MARBLED GODWIT ▪ R. M. Timm and R. M. Zink

NOTES

Black-headed Grosbeak in Jamestown, North Dakota ▪ R. Lender

Summer Record of Red-breasted Nuthatch in North Dakota ▪ R. Lender

BOOK REVIEWS

Minnesota's Wild Flowers ▪ Staff

In Search of Eagles ▪ J. Lokemoen

Forest and Range Research ▪ Staff

An Economic Analysis of Recycling ▪ Staff

Aploparaksis Borealis Sp. N. (Cestoda: Hymenolepididae) From Passeriform And Charadriiform Birds In Chukotka And Alaska, S. K. Bondarenko, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Aploparaksis borealis sp. n. (Cestoda: Hymenolepididae), from the long-tailed jaeger, Stercorarius longicaudus Vieillot, on the Seward Peninsula, Alaska, and from the red-throated pipit, Anthus cervinus (Pallas), and the Lapland longspur, Calcarius lapponicus (Linnaeus), in Chukotka, northeastern Siberia, is described. This cestode is distinguished by the structure of the cirrus and other morphologic characters from other species of Aploparaksis Clerc 1903 in which there are 10 rostellar hooks and the vitelline gland is aporal to the ovary. A. borealis is the first species of Aploparaksis to be reported from birds representing two orders (Passeriformes and Charadriiformes).

Agricultural Experiment Station News February 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 - January 1977
BULLETINS PRINTED

Life History And Host Specificity Of Mediorhynchus Centurorum Nickol 1969 (Acanthocephala: Gigantorhynchidae), Brent B. Nickol

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Examination of 1905 arthropods from a swamp and surrounding pasture in southern Louisiana revealed larval specimens of Mediorhynchus centurorum in 8 of 228 woodroaches, Parcoblatta pensylvanica, but in no other species. The life cycle was confirmed by feeding eggs of M. centurorum to laboratory-reared woodroaches. Cystacanths later recovered from the woodroaches developed into mature worms when pipetted into esophaguses of red-bellied woodpeckers, Centurus carolinus; redheaded woodpeckers, Melanerpes erythrocephalus; yellow-shafted flickers, Colaptes auratus; and a hairy woodpecker, Dendrocopos villosus. Infection was achieved in all woodpeckers fed cystacanths at least 47 days old and the mean prepatent …

Summary Of Dry Bean Conference

Department of Agronomy and Horticulture: Faculty Publications

Four years earlier a similar dry bean conference was held in Gering. The conference was not structured but was an open discussion. The greatest value of that conference was the stimulus it provided the staff doing research and extension with dry beans. Much scientific work has been done since that conference and it was again apropos to review the status of the research and extension activities. We therefore gathered together in the North Platte Airport Conference Room and spent the day discussing many aspects of the dry bean industry and how each of us relate to it. We needed to …

Block And Bridle Annual, 1977

Block and Bridle Student Organization

Table of Contents:

Emblem and Purpose
Dedication
Commemoration
Ani. Sci. Dep’t Chairman Address
B & B President Address
Animal Science Faculty
U of N Ani. Sci. Graduate Students
Block and Bridle Officers
Block and Bridle Executive Committee
Block and Bridle Advisors
Block and Bridle Initiates
Block and Bridle Members
Liaison Committee
Block and Bridle Seniors
Honor’s Banquet
Portrait Presentation
Senior Merit Award
Junior Scholarship Award
Activities and Program Calendar
Summer Meeting
State Fair Presentations
Fall Steak Fry
Kid’s Day
Little Ak-Sar-Ben
Queen Coronation and Alumni Dance
Meats Judging Contest
Ham and Sticker Sales
Christmas Coffee
Regional Meeting
Meat Animal Evaluation …

Alfalfa Latent Virus, A Naturally Occurring Carlavirus In Alfalfa, Yenkateswarlu Veerisetty, Myron K. Brakke

Department of Plant Pathology: Faculty Publications

Alfalfa latent virus (ALV), a new member of the carlavirus group, was isolated From alfalfa (Medicago sarivo) clones from rbe University of Nebraska experimental plots and from the Farmers' fields. The pea aphid, Acvrihosiphon pisum, transmitted this virus to M. sativa, Pisum sativum, and Viria faba. but not to Trifolium pratense. It was also sap transmissible to V. faba, V. villoso, and P. sarivum, but was not seed-borne in P. sariuum. In V. Jaba sap ALV was infectious at 65 but not at 70 C in 10 min. or …

Ak-Sar-Ben Beef Seminar Ill, Knights Of Ak-Sar-Ben

University of Nebraska Historical Extension: Bulletin

Opening Remarks - Mr. Robert G. Volk

"Objectives of 4-H" - Dr. William E. Caldwell

Moderator's Remarks - Dr. Frank H. Baker

"Carcass Characteristics of Various Breed Crosses" — Dr. Robert Koch

Production Committee Report - Mr. Chuck Schroeder

Judges Committee Report - Dr. Miles McKee

Marketing and Distribution Report - Mr. Carl Gardner

Education Committee Report - Dr. Joe Hughes

Summary of Ak-Sar-Ben Beef Seminar III - Moderator

News Release on Ak-Sar-Ben Beef Seminar III

Absence Of Spermine In Filamentous Fungi, Kenneth W. Nickerson, Larry D. Dunkle, James L. Van Etten

Papers in Microbiology

Polyamines were examined in several yeasts and filamentous fungi. Whereas putrescine, spermidine, and spennine were present in the yeasts, spernine was not detected in any of the filamentous fungi.