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United States Patent , Number: 5,602,242: Hybrid Rna Virus, Paul G. Ahlquist, Roy C. French, Robert F. Sacher

Department of Plant Pathology: Faculty Publications

A recombinant RNA virus is provided allowing encapsidation of genetically engineered viral sequences in heterologous, preferably rod-shaped coat, protein capsids. Since icosahedral viruses are limited in the amount of RNA they can carry, and rod-shaped viruses are expansible, this invention allows the size of recombinant virus RNA components to be increased (or decreased). Methods of making and using such recombinant viruses are also provided, specifically with respect to the transfection of plants to bring about genotypic and phenotypic changes.

A Guide To Mechanical Rangeland Regeneration, J. Addison

Bulletins 4000 -

The main objective of this Bulletin is to describe mechanical methods of promoting rangeland regeneration and how to determine which is the most appropriate to use on any particular site. Mechanical regeneration methods are not 'quick fix' but may be used to advantage in some rangeland regeneration strategies.

Leafy Spurge - A Review, Sharon A. Clay, Chad M. Scholes

Agronomy, Horticulture and Plant Science Faculty Publications

Leafy spurge (Euphorbia esula L.) is a perennial herbaceous weed that infests millions of acres of range and pasture in the northern Great Plains. It outcompetes grasses and lowers land productivity because cattle will not graze infested areas even if spurge makes up only 10% of the vegetative biomass. This presentation will cover the history, taxonomy, and phenology of leafy spurge. A discussion of chemical, mechanical, and biocontrol techniques that aid in leafy spurge management will also be included.

A Biosystematic Survey Of Sierra Lodgepole Pine (Pinus Contorta Var. Murrayana [Critchfield]) Populations In The Transverse And Peninsular Ranges Of Southern California, Richard Gobin Everett

Theses Digitization Project

No abstract provided.

Vegetative Proliferation In Polypogon Monspeliensis (Gramineae), Eric H. Roalson, Kelly W. Allred

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Riparian Buffers For Agricultural Land, Michael Dosskey, Richard C. Schultz, Thomas M. Isenhart

Agroforestry Notes (USDA-NAC)

Purpose:

• Define what a riparian buffer is

• Describe what benefits a riparian buffer can provide in an agricultural landscape

• Identify situations where installing a riparian buffer should be considered

How To Design A Riparian Buffer For Agricultural Land, Michael Dosskey, Dick Schultz, Tom Isenhart

Agroforestry Notes (USDA-NAC)

Purpose: Identify four basic steps to follow when designing a riparian buffer.

Observations On Pasture Management And Grazing, Darwin B. Nielsen

All Archived Publications

No abstract provided.

Toxic Contaminants In Harvested Forages, Clell V. Bagley

All Archived Publications

No abstract provided.

An Analysis Of The Variation Within Cratoxylum Arborescens (Clusiaceae) In Malesia, A.C. Church, P.F. Stevens

Biology Department Faculty Works

The variation within the widespread West Malesian species Cratoxylum arborescens (Vahl) Blume was analyzed and three distinctive variants were found. These are recognized formally as varieties, var. arborescens, var. miquelii King, and var. borneense A.C. Church & P.F. Stevens. A key and full descriptions are given. The characters employed to delimit the three taxa are discussed and the selection of varietal rank is justified.

Additions To The Vascular Flora Of San Clemente Island, Los Angeles County, California, With Notes On Clarifications And Deletions, Timothy S. Ross, Steve Boyd, Steve Junak

Aliso: A Journal of Systematic and Floristic Botany

The number of vascular plant taxa reported from San Clemente Island, California, is briefly summarized. Recent additions to the vascular flora are presented and, with one exception, representative voucher specimens are cited as substantiation. Of the taxa di scussed, 68 are previously unreported taxa, and six are substantiations of previously dubious reports. An additional dozen taxa are cited in relation to clarifications or deletions. Based on current knowledge, we estimate the known flora to consist of 396 species with an additional 19 infraspecific taxa represented. Of these 415 taxa, 69.2% (272 speciesl15 additional subspecies or varieties) are considered indigenous to …

Hierarchial Roots And Shoots Or Opera Jehovae Magna! (Psalms 111:2), Dan H. Nicolson

Aliso: A Journal of Systematic and Floristic Botany

The philosophy of Linnaeus's classification, Systema Naturae, is briefly reviewed, as well as those of post-Linnaean systems of plant classification. Texts of current codes of nomenclature pertaining to hierarchy, including associated rank terminations, are compared.

Center For Grassland Studies Newsletter, Winter 1997, Volume 3, No. 1

Center for Grassland Studies: Newsletters

Contents:

New Nutritional Information For Beef Producers in 1997 Nebraska Beef Report by Dennis Brink, Department of Animal Science, UNL

IANR Employees Recognized at Nebraska Turfgrass Conference

New CAST report: Grazing on Public Lands

Pasture Songbirds by Laura Paine and Dan Undersander, Department of Agronomy, University of Wisconsin

U.S. Forest Service Revising Grassland Management Plans by Tom Domek, Nebraska National Forest

Sandhills Partnership Receives Grant for Fen Restoration

Nebline, January 1997

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Agribusiness education: a priority for Extension!
NEBLINE survey completed
Disease-resistant plants
The most common houseplant disease
Over the garden fence
Plants to decrease indoor pollution
New 4-H horticulture classes for Lancaster County Fair
New 4-H horticulture garden program
Tree hotel
Illegal insecticide use threatens health
Hibernation happenings
Newly-discovered magnet producing bacteria may clean environment
January is nota slow month for some pesky pests
Are any two alike? Snowflakes
Snug in the snow
Crop protection clinics
Pork production seminar
Cash in on hay marketing opportunities
Dormant planting grasses and legumes
1997 pesticide applicator training
Use soil tests to improve alfalfa production …

A Riparian Buffer Design For Cropland, Michael Dosskey, Dick Schultz, Tom Isenhart

Agroforestry Notes (USDA-NAC)

Purpose:

• Present a general, multi-purpose, riparian buffer design suitable for most cropland situations

• Provide some guidelines for adjusting this general design to better fit site-specific conditions or landowner needs

A Comparative Study Of The Benthic Population In Weir Ponds Draining Watersheds Of The Fernow Experimental Forest, Parsons, West Virginia, Kevin Dwayne Brittingham

Theses, Dissertations and Capstones

A study of the benthos of weir ponds draining watersheds of the Fernow Experimental Forest (FEF) was conducted in 1994-1995. The objectives of this study were: (1) to relate differences in weir pond faunas to watershed treatments on the FEF, and (2) to compare current weir pond faunas to those described in 1973 by Steve Harris. In 1971-1972, there were fewer invertebrates but greater taxa richness than in 1994-1995. Total density varied among weir pond and between studies with numbers in the 1971- 1972 study ranging from 26,168 to 79,259 individuals collected, while numbers in the 1994-1995 study raged from …

Floristic Investigation Of Crooked Creek Community Of Juan Solomon Park, Indianapolis Indiana, Raelene M. Crandall, Rebecca W. Dolan

Scholarship and Professional Work - LAS

The protection of plant resources in urban areas is a growing conservation concern. Inventory activities that document species presence and stewardship plans that protect and enhance these areas are needed. The results of a botanical inventory of the Crooked Creek Community Juan Solomon Park in Indianapolis, Indiana, are reported in this paper. The 46-acre park contains three distinct habitats, supporting a wide variety of plants. One hundred seventy-nine vascular plant species from 64 families were identified, including 53 (29.6%) non-native species that are naturalizing within the park. Despite its high percentage of alien species and urban setting, the park is …

International Market Opportunities For Field Peas, Andrew Quinn, Malcolm Sedgwick

Farm Systems and Economics published reports

The purpose of this report is to determine, through desk top statistical analysis, key countries which hold significant promise for the export expansion of the Western Australian field pea industry.

The report is comprised of five parts. 1) a brief field pea overview, 2) world field pea production and trade, 3) Australian field pea production and trade, 4) Western Australian field pea production and trade and 5) conclusions.

The first four sections aim to identify the major producers, exporters, importers and premium markets operating in the international field pea market. The fifth section concludes by identifying six countries that warrant …

Processing And Conservation Of The Little Corn In Aiquile Province In The Cochabamba Department: Use Of Antioxidants, Organic And Industrial Evaluation, Saul Victor Miranda Fernandez

Theses and Dissertations

The present work was conducted in order to determine an adequate variety in the processing of small corn, in which a monitoring of all the cycle in cultivation was conducted. The behavior of the small corn was analyzed in the laboratory before the presence of three antioxidants, ascorbic acid, acetic acid and sodium sulfate in two concentrations in addition to subjecting them to thermal treatments that allows us to obtain a pleasant product for the consumer that is both resistant to treatment and nutritious for the health. The results indicate that the best variety of corn is muruchi yellow, the …

Establishment Of Kura And Red Clover On A Soil And Mine Spoil, David C. Ditsch, Michael Collins, Norman L. Taylor

Agronomy Notes

Numerous benefits result from the addition of forage legumes to livestock diets. Superior nutritive value and intake of legume forage generally increase individual animal productivity compared with grass alone. This is particularly important with tall fescue where dilution of the diet with legumes can partially alleviate toxicosis associated with endophyte fungus infected fescue (Acremonium coenophialum). Unfortunately, short-term persistence of most legumes requires periodic reestablishment, adding to the cost of forage production and complicating pasture management.

Ground Flora Composition Following Harvesting Of A Bottomland Hardwood Forest In The Mississippi River Batture Lands, James E. Kellum, Eric Sundell, Brian Roy Lockhart

Journal of the Arkansas Academy of Science

No abstract provided.

Particle Size And Temperature Affect Fecal Bacteria Survival In Sediment, Mark S. Coyne, J. M. Howell, P. L. Cornelius

Agronomy Notes

When cattle have direct access to streams, fecal bacteria concentrations in stream sediments increase. If these bacteria persist, and if the sediments are resuspended, fecal bacteria may also appear in surrounding water for extended periods. Why do fecal bacteria persist, since dry conditions, high acidity or alkalinity, sunlight, competition from native microbes, and extreme temperatures all diminish their populations in soil? The effects of these environmental factors are much reduced in sediment. Water protects fecal bacteria from desiccation and ultraviolet light. High temperatures can promote their regrowth in wet environments. Fecal bacteria also survive on fine-sized sediments in streams because …

Neem Seed Extract Spray Applications As Low-Cost Inputs For Management Of The Flower Thrips In The Cowpea Crop, R. C. Saxena, E. L. Kidiavai

All Peer-Reviewed Publications

In field trials conducted at the Experiment Station and in a farmer's field at Mbita near the shores of Lake Victoria, Kenya, applications of 2% or 3% neem seed extract (NSE) @ 200 l/ha with a knapsack sprayer at 38, 47 and 51 days after emergence (DE) of the cowpea crop or 5%, 10% or 20% NSE sprayed @ 10 l/ha with an ultra-low-volume applicator at 31, 39 and 49 DE often significantly reduced the number of larvae of the flower thrips, Megalurothrips sjostedti (Trybom), in cowpea flowers recorded 2 days after each treatment. Also fewer adults occurred in flowers …

The Rdna Internal Transcribed Spacer Region As A Taxonomic Marker For Nematodes, Thomas O. Powers, T. C. Todd, A. M. Burnell, P. C. B. Murray, C. C. Flemming, Allen L. Szalanski, B. A. Adams, T. S. Harris

Department of Plant Pathology: Faculty Publications

The ITS region from a wide taxonomic range of nematodes, including secernentean and adenophorean taxa, and free-living, entomopathogenic, and plant-parasitic species, was evaluated as a taxonomic marker. Size of the amplified product aided in the initial determination of group membership, and also suggested groups that may require taxonomic reevaluation. Congeneric species often displayed identically sized ITS regions, but genera such as Pratylenchus and Tylenchorhynchus had species with large differences in size. ITS heterogeneity in individuals and populations was identified in several nematode taxa. PCR-RFLP of ITS1 is advocated as a method of taxonomic analysis in genera such as Helicotylenchus that …

Expression Of Follistatin And Inhibin/Activin Subunit Genes In Porcine Follicles, M.D. Li, L.V. Depaolo, J.J. Ford

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Expression of the follistatin (FS) and inhibin/activin (I/A) α, β_A, and β_B subunit genes in porcine ovarian follicles was evaluated by reverse transcriptase polymerase chain reaction and/or RNase protection procedures to establish changes during the final stages of follicular development. For the I/A α and β_A subunits, expression increased (p < 0.05) as follicles progressed to the mid-stage of the follicular phase. The β_B, subunit was expressed in lower concentrations, and all three I/A subunits showed a marked reduction (p < 0.01) in expression by the late stage of follicular development. In contrast to this pattern, FS gene expression decreased (p < 0.05) as follicles developed from the early (low estradiol) to the mid stage (high estradiol) and continued to decline in advanced follicles (after estrus). The predominant mRNA encoded for FS-315, and the ratio of mRNA for FS-315 to mRNA for FS-288 did not differ significantly during the three stages. Within an animal, concentration of FS mRNAs was related more to stage of the follicular phase than to follicular size. Follicular fluid concentration of FS changed in a manner similar to that observed for expression of its gene. We conclude that expression of the FS gene and translation of its mRNA decrease as follicles approach ovulatory status.

Genetic Variation In North American Leafy Spurge (Euphorbia Esula) Determined By Dna Markers, Martha L. Rowe, Donald J. Lee, Scott Nissen, Brunella M. Bowditch, Robert A. Masters

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Levels of inter- and intrapopulation genetic variation were determined in five North American populations of leafy spurge using chloroplast DNA (cpDNA) RFLPs and RAPD markers. Thirteen plastome types were identified among 123 individuals collected from five geographically separated populations. Number of pastimes within a population ranged from one to seven, with four of the populations having a predominate type plus one or more rarer types. Some plastome types were shared by populations, but plastome distribution among populations was nonrandom. RAPD markers indicated greatest relatedness among individuals within a population. Relatedness among populations as established through RAPDs was greater for geographically …

Twenty-Five Year Index To The Prairie Naturalist, Volumes 1-25, 1968-1993, Paul B. Kannowski

The Prairie Naturalist

Forward

Author Index

1.Articles and Notes

2. Book Reviews

3. Editorials

Subject Index

Geographic Index

Taxonomic Index

Plants

Animals

Other Records

A Study Of The Lichens At Rocky Branch Nature Preserve, Clark County, Illinois, Eric B. Grunder

Masters Theses

In 1971, a graduate student at Eastern Illinois University, James E. Wiedman, studied the lichen flora of Rocky Branch Nature Preserve, Clark County, Illinois. During his study he collected, identified, and recorded a total of 64 lichen species. Since 1971, Rocky Branch Nature Preserve has experienced a dramatic increase in use by people and a concomittant decline in the quality of lichen habitats. In order to assess the decline of suitable lichen habitats and the reduction of lichen species a second study of the lichens at Rocky Branch Nature Preserve was undertaken. As part of this study, ten habitat sites …

The Impact Of Ixodiphagus Hookeri, A Tick Parasitoid, On Amblyomma Variegatum (Acari: Ixodidae) In A Field Trial In Kenya, E. N. Mwangi, S. M. Hassan, G. P. Kaaya, S. Essuman

All Peer-Reviewed Publications

In an experiment to investigate the effect of the tick parasitoid, Ixodiphagus hookeri, on tick numbers on cattle, 150 000 parasitoids were released over a period of 1 year in a field where ten cattle infested with multiple tick species were kept. Amblyomma variegatum was reduced from 44 to two ticks per animal while Rhipicephalus appendiculatus increased over the time of parasitoid release. During the time of release 51% of the nymphs of A. variegatum collected from the animals were parasitized. The recovery of the parasitoids after the releases were stopped was only 9%. The total numbers of A. variegatum …

Macrophyte-Macroinvertebrate Interactions In A Lentic Ecosystem And The Effect Of Fluridone Treatment To Control Myriophyllum Spicatum L., Gregory J. Moeller

Dissertations and Theses @ UNI

Myriophyllum spicatum L. is an exotic macrophyte that can become pestiferous in lentic ecosystems. Two field studies were conducted to investigate: 1) epiphytic macroinvertebrates associated with M. spicatum and native macrophytes; and 2) epiphytic macroinvertebrate community response to fluridone treatment for M. spicatum control.

In the first study evaluating epiphytic macroinvertebrates associated with M. spicatum and native macrophytes, triplicate samples were collected at three sites in both Auburn and Zumbra Lakes, Minnesota, USA. One site in each lake contained primarily M. spicatum, the second site contained M. spicatum and native vegetation, and the third site was dominated by native …