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Cropwatch No. 96-19, Aug. 16, 1996, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

ECB update.................132

Evapotranspiration data.................132

Millet for feed.................133

Winter wheat meetings.................133

Herbicide Guide.................133

Restricted entry intervals.................134

Nitrogen use.................134

Proposal For Renovation Of 1920 Tractor Test Lab Into Museum, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Bids for Renovating Roof State Fair Display Further Funding for Renovation

The Probe, Issue 168 – August 1996

The Probe: Newsletter of the National Animal Damage Control Association

Personal Reflections: On Encountering a Lion, by Robert M. Timm, Editor, The PROBE
Pigeons Foil French Efforts
Sea Lions Gorge on Depleted Northwest Salmon
Coyote Attacks, Wounds Young Boy
Book Review: Mole Traps: A Collector's Manual, by Rex E. Marsh, Department of Wildlife, Fish, and Conservation Biology, University of California, Davis. RonMunro, Principal Illustrator. 1995. 169 pp.

Water Current, Volume 28, No. 4, August 1996

Water Current Newsletter

Four-Year Study Finds NU Recommendations Dependable
From the Director: Nebraska Grants Success
Fluoridation Makes Comeback in Nebraska Communities
Installation of Water Garden New to Festival

Ard News August 1996

Agricultural Research Division: News and Annual Reports

CONTENTS:

COMMENTS FROM THE ASSOCIATE DEAN
ARDC SUPERFUND UPDATE
WIDAMAN TRUST DISTINGUISHED GRADUATE ASSISTANT AWARD
HARDIN DISTINGUISHED GRADUATE FELLOWSHIP FOR 1996-1997
INNOVATIVE AND HIGH RISK RESEARCH PROGRAM
BURLINGTON NORTHERN ENDOWMENT
NATIONAL RESEARCH INITIATIVE
PROPOSALS SUBMITTED FOR FEDERAL GRANTS
NEW OR REVISED PROJECTS
PROJECTS APPROVED BY THE COMMODITY BOARDS
GRANTS AND CONTRACTS RECEIVED JUNE AND JULY, 1996

Vif-Negative Human Immunodeficiency Virus Type 1 Persistently Replicates In Primary Macrophages, Producing Attenuated Progeny Virus, Iqbal Chowdhury, Wei Chao, Mary Jane Potash, Pavel Sova, Howard Gendelman, David J. Volsky

Nebraska Center for Virology: Faculty Publications

The vif gene of human immunodeficiency virus type 1 (HIV-1) is required for efficient infection of primary T lymphocytes. In this study, we investigated in detail the role of vif in productive infection of primary monocyte-derived macrophages (MDM). Viruses carrying missense or deletion mutations in vif were constructed on the background of the monocytotropic recombinant NLHXADA-GP. Using MDM from multiple donors, we found that vif mutants produced in complementing or partially complementing cell lines were approximately 10% as infectious as wild-type virus when assayed for incomplete, complete, and circularized viral DNA molecules by quantitative PCR amplification or for viral core …

A Prototype National Drought Alert Strategic Information System For Australia, Ken D. Brook, John O. Carter

Drought Network News (1994–2001)

Defining and categorizing drought in a quantitative and scientific manner are important national issues for Australian state and Commonwealth governments, landholders, and agribusiness. The challenge for modelers of Australia’s grasslands is to integrate biological models, geographic information systems (GIS), satellite imagery, economics, climatology, and visual high-performance computing into an Internet-deliverable application that can provide easily understood monitoring and prediction advice in near real-time— a national drought alert strategic information system.

Although NOAA satellite-derived imagery has been somewhat useful in the broad-scale spatial assessment of green cover, especially the spatial response of vegetation to rainfall events (Smith, 1994; Dudgeon et al., …

The Biology Of Alewife Alosa Pseudoharengus In Lake Ogallala, Nebraska, Eric A. Laux

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

No abstract provided.

In Memoriam: John Teague Self (1906-1995), John J. Janovy Jr.

John J. Janovy, Jr. Publications

Obituary of John Teague Self, parasitologist, 1906-1995.

The Bacillus Thuringiensis Insecticidal Toxin Binds Biotin-Containing Proteins, Cheng Du, Kenneth Nickerson

Papers in Microbiology

Brush border membrane vesicles from larvae of the tobacco hornworm, Manduca sexta, contain protein bands of 85 and 120 kDa which react directly with streptavidin conjugated to alkaline phosphatase. The binding could be prevented either by including 10 μM biotin in the reaction mixture or by prior incubation of the brush border membrane vesicles with an activated 60- to 65-kDa toxin from Bacillus thuringiensis HD-73. The ability of B. thuringiensis toxins to recognize biotin-containing proteins was confirmed by their binding to pyruvate carboxylase, a biotin-containing enzyme, as well as to biotinylated ovalbumin and biotinylated bovine serum albumin but not …

Prediction Of Breeding Values For Tenderness Of Market Animals From Measurements On Bulls, K. L. Barkhouse, L. Dale Van Vleck, Larry V. Cundiff, M. Koohamaraie, D. D. Lunstra, J. D. Crouse

Department of Animal Science: Faculty Publications

Data were tenderness measures on steaks from 237 bulls (Group II) slaughtered after producing freezable semen and on 1,431 related steers and heifers (market animals, Group I ) from Angus, Hereford, Pinzgauer, Brahman, and Sahiwal crosses from the Germ Plasm Evaluation project at the U.S. Meat Animal Research Center. Tenderness was assessed through Warner-Bratzler Shear Force (SF), taste panel tenderness (TPT), marbling score (MS), and myofibrillar fragmentation index (MFI). For all traits, as fraction Bos indicus inheritance increased, implied tenderness decreased. Heritability estimates were generally not significantly different from zero. Genetic correlations generally indicated favorable associations among the traits. The …

Comparison Of Circulating Concentrations Of Reproductive Hormones In Boars Of Lines Selected For Size Of Testes Or Number Of Ovulations And Embryonal Survival To Concentrations In Respective Control Lines, D. V. Mariscal, P. L. Wolfe, E. G. M. Bergfeld, Andrea S. Cupp, F. N. Kojima, K. E. Fike, T. Sanchez, M. E. Wehrman, Rodger K. Johnson, Roger J. Kittok, J. J. Ford, J. E. Kinder

Department of Animal Science: Faculty Publications

The objectives of this study were to determine whether circulating concentrations of gonadotropins and gonadal hormones of boars were altered as a result of selection of pigs for size of testes or for embryonal survival and(or) number of ovulations. Included in Exp. 1 and 2 were boars with the greatest estimated paired weight of testes (TS) and boars from a control (C) line. Concentrations of FSH were similar ( P > .10) in boars from the TS and C lines. In Exp. 3, 4, and 5, circulating concentrations of FSH and 17β-estradiol (E₂) were evaluated in neonates, during pubertal …

Cropwatch No. 96-16, July 19, 1996, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

New publications ...................... 116

Rootworm resistance...................... 117

Evapotranspiration data ...................... 118

Western bean cutworm ...................... 119

Nutrients in manure...................... 120

Effects Of Thermal Processing On The Stability Of Fumonisin B2 In An Aqueous System, Lauren S. Jackson, Jason J. Hlywka, Kannaki R. Senthil, Lloyd B. Bullerman

Department of Food Science and Technology: Faculty Publications

Fusarium moniliforme, a prevalent fungal contaminant of corn, has been implicated in several animal diseases including equine leukoencephalomalacia (ELEM) (Thiel et al., 1991), porcine pulmonary edema (PPE) (Harrison et al., 1990), liver toxicity and liver cancer in rats (Voss et al., 1993), and esophageal cancer in humans (Sydenham et al., 1991; Rheeder et al., 1992). The fumonisins, which are secondary metabolites of F. moniliforme, are believed to be responsible for many of the toxicological effects in animals and humans (Marasas et al., 1988; Wilson et al., 1992; Colvin et al., 1993, Gelderblom et al., 1991; Sydenham et al., …

Model Calculations Of Langmuir Monolayers: Pressure Effects On Tilting Behavior Of Idealized Amphiphiles, D.R. Swanson, Robert J. Hardy, Craig J. Eckhardt

Craig J. Eckhardt Publications

Model amphiphiles consisting of lines of Lennard-Jones (LJ) centers are investigated to determine the effect of pressure and molecular geometry on ground-state tilting behavior. Both the amphiphile length and the intramolecular distance between LJ centers is varied. The results give guidelines for understanding and controlling tilting behavior in monolayer films.

Nebline, July 1996

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Horticulture

Rural $ense

Family Living

4-H & Youth

Environmental Focus

Community & Leadership Development

Extension Calendar

Expanded Food and Nutrition Education Program (EFNEP)

Nebraska Association for Family and Community Education News

and other extension news and events

Flea News 52 (July 1996), Robert E. Lewis

Flea News

Editorial, Robert E. Lewis

Miscellanea

Announcement

Siphonaptera literature

New flea species

Center For Grassland Studies Newsletter, Summer 1996, Volume 2, No. 3

Center for Grassland Studies: Newsletters

Contents:

Matching the Cow with Forage Resources by Don Adams, Richard Clark, Terry Klopfenstein, and Jerry Volesky

Grassland Biodiversity, Large Grazers and Fire by Al Steuter, The Nature Conservancy

American Forage and Grassland Council Conference by Lowell Moser, Department of Agronomy, UNL

CGS Citizens Advisory Council Holds Third Meeting In Western Nebraska

Grazing Lands Conservation Initiative Exploratory Meeting

Monoclonal Antibody Assay And Kit For Detecting Metal Cations In Body Fluids, Randall R. Carlson, Jay S. Stout, Dwane E. Wylie, Fred W. Wagner, Malcolm Riddell

Biological Process Development Facility: Staff Publications

The invention provides method and kits for detecting a metallic cation in a sample of a body fluid. The preferred method and kits include the use of at least two different types of antibodies having different specificities. In the preferred method, the sample of body fluid can be contacted with an effective amount of a capture antibody specific for a naturally occurring polypeptide that can bind the metallic cation to form a first antigen-antibody complex. An effective amount of an antibody specific for an epitope on a metallic cation-naturally occurring polypeptide complex or an antibody specific for a metallic cation …

The Probe, Issue 167 – July 1996

The Probe: Newsletter of the National Animal Damage Control Association

Techniques and Expertise in Wildlife Damage Control: A Survey Among NADCA's Membership, by Dallas R. Virchow, University of Nebraska, and J. Russell Mason, Utah State University
NADCA Membership Survey
Rats' Rights Repealed in New Jersey
Texas Predators Dine on Exotics
Recipes for Nutria
Wildlife Damage to Aircraft Tallied
Airplane Hits Deer
Golfers Get Teed Off at Coots
Japanese Technologist Tackles Rodents
ADC To Tackle Gophers
Booklet Review: Missouri's Beaver: A Guide to Management, Nuisance Prevention, and Damage Control by Ron McNeely. Conservation Commission of the State of Missouri, 1995.
Elk Reintroduction and Meningeal Worms
South African Puppy, "Licky," Barely Survives …

Windbreaks: An Important Component In A Plasticulture System, Laurie Hodges, James R. Brandle

Department of Agronomy and Horticulture: Faculty Publications

Windbreaks reduce wind speed and modify the microclimate in sheltered areas. Many producers use wind barriers in their production systems, but few producers recognize all of the benefits available or understand the principles involved in windbreak function and design. Wind has direct and indirect effects on plant growth and development. Direct effects include soil abrasion, increased transpiration, and lodging. Indirect effects are based on changes in the crop microclimate, which influence plant growth and yield. Windbreaks increase soil and air temperatures and can extend the growing season in sheltered areas, resulting in increased crop development, earlier crop maturity, and market …

Molecular Phylogeny And Typing Of Blackflies (Diptera: Simuliidae) That Serve As Vectors Of Human Or Bovine Onchocerciasis, Jianming Tang, Kenneth Pruess, Eddie W. Cupp, Thomas R. Unnasch

Department of Entomology: Faculty Publications

A subregion of the mitochondrial large subunit (16s) rRNA gene was amplified by polymerase chain reaction (PCR) from nine species of blackflies (Diptera: Simuliidae) which serve as natural or experimental vectors of human or bovine Onchocerca parasites. PCR products from each species of blackfly were tested by directed heteroduplex analysis (DHDA), and their genotypes established according to diagnostic banding patterns of the heteroduplex products. Three alleles of mitochondrial 16s rRNA were found to exist in members of the Simulium (Edwardsellum) damnosum sensu lato complex from West Africa, and two alleles were found in the Neotropical Simulium (Psilopelmia …

Female Choice In Sage Grouse: The Roles Of Attraction And Active Comparison, Robert M. Gibson

School of Biological Sciences: Faculty Publications

Previous studies of female choice in sage grouse Centrocercus urophasianus have implicated both the acoustic quality and repetition rate of the stereotyped strut display as putative cues for female choice. Stages in the choice process at which specific components of male courtship display influence female decisions were investigated using field observations of female premating behavior. Females visited a subset of territorial males and then actively chose one of these as a mate. The order in which males were visited suggested that females searched until an acceptable mate was found, rather than employing a “best-of-n” tactic. Numbers of females visiting a …

Lethal Infection By A Previously Unrecognised Metazoan Parasite, Mónica Santamaría-Fríes, Luis Felipe Fajardo, Mitchell L. Sogin, Peter D. Olson, David A. Relman

United States Department of Veterans Affairs: Publications

Background New microbial pathogens or variant clinical manifestations of known organisms may be first found in immunodeficient patients. An HIV-infected man developed a rapidly-enlarging abdominal mass, suggestive of a neoplasm, that subsequently invaded his liver and caused death. Initial studies showed unusual tissue morphology that could not be matched with any known disease process.

Methods Tissues obtained from biopsy at laparotomy and necropsy were studied by light microscopy, immunohistochemistry, electron microscopy, and broadrange ribosomal DNA-amplification and sequence analysis.

Findings Tissue lesions were characterised by peculiar cytoplasmic sacs containing minute cells with very prominent nucleoli. The pathological process was recognised as …

Second-Order Conditioning Detects Unexpressed Morphine-Induced Salt Aversion, Rick A. Bevins, Timothy A. Delzer, Michael T. Bardo

Department of Psychology: Faculty Publications

Morphine failed to condition a salt taste aversion at a dose (15 mg/kg) sufficient to produce a robust aversion to a saccharin taste. Indeed, three different concentrations of salt (1%, 1.5%, and 2%) paired with the same morphine dose yielded no direct evidence for conditioned aversion. Yet, when a novel saccharin taste was paired in compound with the previously conditioned salt conditioned stimulus, we found evidence for a conditioning to the saccharin cue alone in three separate experiments. Control groups eliminated alternative accounts such as neophobia and differential exposure to morphine. Combined, these findings indicate that morphine conditioned a salt …

Improving The Validation Of Model-Simulated Crop Yield Response To Climate Change: An Application To The Epic Model* Jour. Ser. No. 11339 Nebraska Ag. Res. Div., William E. Easterling, Xiafen Chen, Cynthia Hays, James R, Brandle, Hehui Zang

School of Natural Resources: Faculty Publications

Crop models have been used extensively to simulate yield response to various scenarios of climate change. Such simulations have been inadequately validated, limiting their utility in policy analysis. In this research, it is argued that the performance of crop models during recent years of extreme weather conditions relative to current normals may give a better indication of the validity of model simulations of crop yields in response to climate change than performance during the full range of climate conditions (as is done now). Twenty years of the climate record (1971-1990) are separated into different growing season temperature and precipitation classes …

Molecular Studies On Biv Infection And Its Interaction With Other Bovine Viruses, Charles Wood, Harish Minocha, Yunqi Geng

Nebraska Center for Virology: Faculty Publications

Bovine immunodeficiency virus (BIV) is a bovine lentivirus that infects animals world-wide. The authors have cloned the BIV env and gag proteins and several sub-unit peptides spanning the entire coding regions of the two proteins as fusions to the bacterial trpE protein and expressed them in Escherichia coli (Spindler et al. 1984). These recombinant proteins can readily be expressed but the expression levels of these peptides varied. When these proteins were tested against a panel of bovine sera, only sera from BIV-infected animals reacted specifically. One major antigenic determinant was identified in the cartoxyl terminus of the p26 gag protein …

Wildlife As Natural Enemies Of Crop Pests, Ron J. Johnson, James R. Brandle, Natalie Sunderman, Rebecca Fitzmaurice, Nancy A. Beecher, Ronald M. Case, Mary Dix, Linda J. Young, Mark O. Harrell, Robert J. Wright, Laurie Hodges

Triennial National Wildlife and Fisheries Extension Specialists Conference: 8th (1996)

One asset of wildlife to landowners is the potential but understudied role of birds and other species as endemic natural enemies of crop pests. Enhancing such natural enemies as part of sustainable agricultural systems offers promise for maintaining agricultural competitiveness while providing wildlife habitat in intensively farmed areas. The University of Nebraska has established an agroforestry research team to address interdisciplinary questions and outreach associated with this topic. Included are studies of bird, mammal, and insect use of woody and herbaceous corridors and adjacent cropfields in east-central Nebraska. Uncultivated areas needed to sustain natural enemies of crop pests also provide …

Public Issues Education In Natural Resources: Speaking As A Professional, Dave Cleaves, Paul Adams

Triennial National Wildlife and Fisheries Extension Specialists Conference: 8th (1996)

One certainty these days is that public policy will continue to shape the future of forestry. We foresters seem to take what's served up, wishing we had more influence on the ingredients and how they are prepared. We need to assert more leadership in providing forestry knowledge to citizens and decision-makers. However, information delivery is not enough; we need to be involved in the process of policy as well as its content. Technical information and good science will not prevail on their own. We don't have to push a particular option to be effective. We can use our skills and …

Development Of A Forestry, Fish, And Wildlife Center, W. Daniel Edge, Edward Jensen, Nancy Boriack

Triennial National Wildlife and Fisheries Extension Specialists Conference: 8th (1996)

Public concerns for stewardship and conservation of biological diversity have caused a reduction in the timber supply in the Pacific Northwest on federal lands. This reduction in the availability of federal timber has resulted in an intensification of management activities on private forest lands. The reduced timber supply has also increased timber prices to the point that many nonindustrial private woodland owners, who previously were not interested in selling timber, have entered the market. This intensification of management activities on the private forest base has resulted in additional increased concerns for fish and wildlife species. Reliable and readily accessible information …