Digital Commons Network^™

A Comparison Of Microbial Communities In Soil With And Without A Sugarcane Cropping, Carolyn Faye Savario

LSU Master's Theses

Sugarcane (inter-specific hybrids of Saccharum) is grown largely under long-term monoculture production in Louisiana. This can lead to a complex problem termed "yield decline" that results in poor root health and reduced productive capacity of sugarcane. This problem has been documented to be a limiting factor for sugarcane production in diverse regions, including Louisiana, Hawaii, Jamaica, and Australia. Previous work showed that biological factors affect root health and contribute to yield decline. The objectives of this study were to increase our understanding of microbial communities in sugarcane soils, to determine if there are differences in microbial communities associated with sugarcane …

Table & Seed Potatoes From Western Australia At A Glance, Dr I Mcpharlin, Peter Dawson, Rachel Lancaster

Bulletins 4000 -

Western Australia is a leading national exporter of table potatoes, accounting for almost 40 per cent of Australian exports. The high quality of Western Australian potatoes commands premium prices on both national and international markets. Opportunities to export Certified potato seed, particularly to south east Asian markets are growing and varieties suited to export markets are being developed.

Detection Of Enterohemorrhagic Escherichia Coli O157:H7 By Using A Multiplex Real-Time Pcr Assay For Genes Encoding Intimin And Shiga Toxins, Vijay K. Sharma, Evelyn A. Dean-Nystrom

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

A multiplex real-time PCR (R-PCR) assay was designed and evaluated on the ABI 7700 sequence detection system (TaqMan) to detect enterohemorrhagic Escherichia coli (EHEC) O157:H7 in pure cultures, feces, and tissues. Three sets of primers and fluorogenic probes were used for amplification and real-time detection of a 106-bp region of the eae gene encoding EHEC O157:H7-specific intimin, and 150-bp and 200-bp segments of genes stx1 and stx2 encoding Shiga toxins 1 and 2, respectively. Analysis of 67 bacterial strains demonstrated that the R-PCR assay successfully distinguished EHEC O157:H7 serotype from non-O157 serotypes and provided accurate profiling of genes encoding intimin …

Control Of Tomato Late Blight (Phytophthora Infestans) With Biocides On Tomatoes (Lycopersicum Sculentum) In The Community Of Carmen Pampa, Belonging To Coroico Municipality (Nor Yungas, La Paz), Rosemary Gutiérrez Coarite

Theses and Dissertations

In Bolivia, tomato acreage is 6717 and has a yield of 12005 kg/ha and the total production is 80,636 TM. Departments that harvest tomato are Santa Cruz, Cochabamba and La Paz, Santa Cruz being the department that shows the highest rates of production with 40653 TM in comparison with La Paz which has a production of 3109 TM and Cochabamba of 2420 TM. The principle factors in affect are, the best climatic conditions in Santa Cruz, while Cochabamba and La Paz have differences in seasonal changes (National Institute of Statistics, 1998). The importance of the tomato harvest lies in consumption …

The S-Locus And Unilateral Incompatibility, C. Nathan Hancock, Katsuhiko Kondo, Brian Beecher, Bruce Mcclure

Department of Agronomy and Horticulture: Faculty Publications

Plants have many ways to regulate the type of pollen that arrives on the stigma surface. Once there, further control mechanisms regulate compatibility. The latter controls are largely based on biochemical interactions that support compatible pollination and prevent incompatible matings. S-RNase-based selfincompatibility (SI) systems are the most phylogenetically widespread mechanisms for controlling pollination. Studies of Nicotiana establish a firm link between SI and unilateral interspecific incompatibility. Although implicated in both inter- and intraspecific compatibility, S-RNase operates through at least three distinct genetic mechanisms that differ in their dependence on non-S-RNase factors. Identification and characterization of these non-S-RNase factors is currently …

Nutrition Of Floricultural Crops: How Far Have We Come?, Ellen T. Paparozzi

Department of Agronomy and Horticulture: Faculty Publications

According to Seeley (1979), even though the Society for Horticultural Science was formed in 1903, it wasn't until the 1930s that research papers on the subject of floriculture were published in our journal. There were, however, numerous college and university bulletins about floricultural crops which included fertilizer studies (for example, Blake, 1915).

Despite the sluggish start, in the last 25 years, in the American Society of Horticultural Science's three journals (Journal of the American Society for Horticultural Science, HortScience, and HortTechnology) alone, there have been over 240 publications relating to the nutrition of floricultural crops. Journal such as …

Future Directions For The Integrated Csfii-Nhanes: What We Eat In America–Nhanes, Johanna Dwyer, Mary Frances Picciano, Daniel J. Raiten

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

The history of the integration of the dietary data collection from the National Health and Nutrition Examination Survey (NHANES) and the Continuing Survey of Food Intakes by Individuals (CSFII) is reviewed. The purposes and process of the workshop are presented. The three key topics of the workshop are summarized. The key roles of cosponsors and participants are acknowledged.

Normal Acquisition And Loss Of Bone Mass, Steven A. Abrams

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

The natural patterns of bone mass accumulation and loss with age represent the templates of individual life cycle periods that are distinguished by marked, physiologically and genetically identifiable, changes in bone mass. During the third trimester of pregnancy, maternal calcium absorption increases and the fetus accumulates about two-thirds of the total bone mass of the term infant. In early infancy, human milk calcium is derived primarily from maternal bone stores, which incur substantial bone losses that are quickly replenished during and after weaning. At puberty, a marked increase in bone mass occurs in conjunction with the initial physical and hormonal …

Biology Of Diorhabda Elongata Deserticola (Coleoptera: Chrysomelidae), An Asian Leaf Beetle For Biological Control Of Saltcedars (Tamarix Spp.) In The United States, Phil A. Lewis, C. Jack Deloach, Allen E. Knutson, James L. Tracy, Thomas O. Robbins

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

Adults and larvae of Diorhabda elongata Brullé subspecies deserticola Chen feed on the foliage of saltcedars (Tamarix spp.). All three instars are black, the 2nd with an indistinct, and the 3rd with a distinct yellowish lateral stripe; full-grown larvae reach ca. 9mm in length and pupate in cells in litter on the ground or a few cm below the soil surface. Adults are yellowish with two dark brown stripes on each elytron. Duration of the egg averaged 5 days, 1st instar 4.9 days, 2nd instar 4.8 days, 3rd instar 7.4 days, prepupa 4.8 days, and pupa 7.1 days at …

Use Of Ground-Based Canopy Reflectance To Determine Radiation Capture, Nitrogen And Water Status, And Final Yield In Wheat, Glen L. Ritchie

Publications

Ground-based spectral imaging devices offer an important supplement to satellite imagery. Hand-held, ground-based sensors allow rapid, inexpensive measurements that are not affected by the earth’s atmosphere. They also provide a basis for high altitude spectral indices. We quantified the spectral reflectance characteristics of hard red spring wheat (Triticum aestivum cv. Westbred 936) in research plots subjected to either nitrogen or water stress in a two year study. Both types of stress reduced ground cover, which was evaluated by digital photography and compared with ten spectral reflectance indices. On plots with a similar soil background, simple indices such as the normalized …

Variability In Water Use By Phreatophytic Banksia Woodland Vegetation Of The Swan Coastal Plain, Western Australia, Sandra Jane Zencich

Theses: Doctorates and Masters

Seasonal changes exist in source-water utilisation by Banksia woodland species overlying a shallow aquifer on the Swan Coastal Plain in Western Australia These were studied to identify the importance of groundwater as a water source to this vegetation. Intra-and interspecific variation in seasonal water use was investigated across the dominant overstorey and understorey species, with particular emphasis on species of different rooting morphologies. Seasonal water use was investigated across a topographical gradient ranging from a groundwater depth of 2.5 to 30 metres, a scenario representative of the coastal sand-dune system. An examination was also made of the response of woodland …

Soils Of Mississippi County, Arkansas, J. M. Mckimmey, B. Dixon, H. D. Scott, C. M. Scarlat

AAES Research Reports and Research Bulletins

Along with air and water, soil contributes essential processes to the natural order of global cycles. With the exception of edibles from the sea, virtually everything we, and most other land-based animals, eat is derived from soil. Soil is a storage medium of essential minerals and nutrients for fulfilling our agricultural and nutritional needs. Humans work the soil to provide the basics of food, clothing, and shelter. We also use the soil as a medium to store and discard our waste. Virtually everything we do is in some way connected to soil

Handbook Of Plant And Crop Physiology, Second Edition, Revised And Expanded, Wally Wilhelm

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

This book, as the title states, is an updated and expanded edition of a 1995 book with a similar title and the same editor. The first thing that may strike the reader of the Handbook is the physical size of this volume. Although the second edition is a few pages shorter than the original (973 vs. 1003 pages), the print size was reduced in this revised edition allowing the expanded text to be presented in a similar number of pages. In revising the book, the editor and authors have rearranged the sections, updated almost all chapters, and added chapters on …

Nebline, November/December 2002

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Families - The Backbone of Neighborhoods
Community Partnerships Help Build
Strong Families & Neighborhoods
Make a Holiday Wreath
Cyclamen care
Winter Care of Houseplants
2002 November/December Garden Calendar
Horticulture Information Center
Carbon Monoxide: The Hidden Killer
Prevent Carbon Monoxide Poisoning from Small Gasoline-Powered Engines and Tools
Reduce Costs and Increase Yields with Biosolids!
Enjoying Your Backyard Wildlife
Neighborhood Cats
Aflatoxin in Corn - What can be Done?
Crop Protection Clinic Jan. 10
Feeding Value of Drought- Stricken Corn Grain for Swine Not Affected
Fall Brings Garden Clean-up
Sales Tax on Tree Planting Services
Use Energy More Efficiently, Cut Heating Costs …

Detection Of Phosphorus And Nitrogen Deficiencies In Corn Using Spectral Radiance Measurements, S.L. Osbourne, James S. Schepers, D. Francis, Michael R. Schlemmer

Department of Agronomy and Horticulture: Faculty Publications

Applications of remote sensing in crop production are becoming increasingly popular due in part to an increased concern with pollution of surface and ground waters due to over-fertilization of agricultural lands and the need to compensate for spatial variability in a field. Past research in this area has focused primarily on N stress in crops. Other stresses and the interactions have not been fully evaluated. A field experiment was conducted to determine wavelengths and/or combinations of wavelengths that are indicative of P and N deficiency and also the interaction between these in corn (Zea mays L.). The field experiment …

Understanding And Managing Corn Yield Potential, Achim R. Dobermann, Timothy J. Arkebauer, Kenneth G. Cassman, J Lindquist, James E. Specht, Daniel T. Walters, Haishun Yang

Department of Agronomy and Horticulture: Faculty Publications

Rainfed and irrigated systems in which corn is grown either in rotation with soybean or as a continuous monocrop are the predominant cropping systems in North America. About 30 million ha of corn are harvested annually for grain in the USA, of which eleven states in the Corn Belt produce more than 210 million tons or 35% of the global corn supply (Dobermann and Cassman, 2002). During the past 35 years, average corn yields have increased linearly at a rate of 1.7 bu/acre per year (109 kg ha^-1 per year, Fig. 1). Average corn yields now approach 140 bu/acre …

An Evolutionary Perspective Of Pierce’S Disease Of Grapevine, Citrus Variegated Chlorosis, And Mulberry Leaf Scorch Diseases, Jianchi Chen, John S. Hartung, Chung-Jan Chang, Anne K. Vidaver

Department of Plant Pathology: Faculty Publications

Xylella fastidiosa causes diseases on a growing list of economically important plants. An understanding of how xylellae diseases originated and evolved is important for disease prevention and management. In this study, we evaluated the phylogenetic relationships of X. fastidiosa strains from citrus, grapevine, and mulberry through the analyses of random amplified polymorphic DNAs (RAPDs) and conserved 16S rDNA genes. RAPD analysis emphasized the vigorous genome-wide divergence of X. fastidiosa and detected three clonal groups of strains that cause Pierce’s disease (PD) of grapevine, citrus variegated chlorosis (CVC), and mulberry leaf scorch (MLS). Analysis of 16S rDNA sequences also identified the …

Center For Grassland Studies Newsletters, Fall 2002, Volume 8, No. 4

Center for Grassland Studies: Newsletters

Examining the Roles of Plant Species and Nitrogen in the Structure and Function of Microbial Communities by Kate Bradley, Rhae Drijber and Johannes Knops, UNL

Carcass and Palatability Characteristics of Calf-fed and Yearling Finished Steers by Perry Brewer, Rosemary Anderson, Chris Calkins, Terry Klopfenstein, and Rick Rasby Department of Animal Science, UNL

2nd Nebraska Grazing Conference Another Winner

New Grasslands Plan Holds Promise for People, Wildlife, and Public Lands (reprint of Hovorka article)

Tracking Movement of Cattle With Satellites

Integrating Forage and Cattle Resources to Maximize Profitability of Beef Enterprises Conferences

Nebraska Partnership for All-Bird Conservation Formed

Ua66/5 Newsletter, Wku Agriculture

WKU Administration Documents

Newsletter created by WKU Agriculture Department re: faculty/staff, students/alumni, student organizations and clubs and donors.

Nebline, October 2002

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

West Nile Virus: How Much Should You Worry?
Perennials with Silver Foliage
Garden Cleanup
Storing Vegetables
House Plant Insect Problems
2002 October/November Garden Calendar
Horticulture information center
Migrating Mice
Wolf Spiders: Big, Hairy and Real Fast
Using Rodenticides in Outbuildings, Garages and Barns
Now is the Time to Utilize Fall Alfalfa
Effects of a Freeze on Forages
Latest U.S. Drought Monitor Map
Grain Stubble Rental Rates
Garden Season Draws to a Close
How to Collect and Handle a Water Sample
Selecting a Tractor for an Acreage
Reducing Mouse and Rabbit Damage
Mice Bait Stations
How America Cooks Pasta
Healthy Eating: …

Strawberry Anthracnose: Histopathology Of Colletotrichum Acutatum And C. Fragariae, Kenneth J. Curry, Maritza Abril, Jana B. Avant, Barbara J. Smith

Faculty Publications

Ontogeny of the invasion process by Colletotrichum acutatum and C. fragariae was studied on petioles and stolons of the strawberry cultivar Chandler using light and electron microscopy. The invasion of host tissue by each fungal species was similar; however, each invasion event occurred more rapidly with C. fragariae than with C. acutatum. Following cuticular penetration via an appressorium, subsequent steps of invasion involved hyphal growth within the cuticle and within the cell walls of epidermal, subepidermal, and subtending cells. Both species of fungi began invasion with a brief biotrophic phase before entering an extended necrotrophic phase. Acervuli formed once …

Nebline, September 2002

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Food Safety at the Workplace: September is National Food Safety Education Month^SM
Test Your Refrigerator Food Safety Savvy Quiz
Storing Sweet Potatoes
Low Water Use Flowers for Your Landscape
2002 September/October Garden Calendar
Fall Rose Show
Horticulture information center
Protect Yourself from West Nile Virus by Controlling Mosquitoes
Recycle Used Oil!
Fall Cleaning?
Head Lice Videotape in English, Spanish and Arabic!
Basic Information about the 2002 Farm Bill
Wait to Use Fall Forage
Fall is a Good Time to Control Problem Weeds
Latest U.S. Drought Monitor Map
Organic Production
Let Popcorn Mature on the Stalk
Drying Gourds
Raising Ducks …

Relationship Between Secondary Metabolism And Fungal Development, Ana M. Calvo, Richard A. Wilson, Jin Woo Bok, Nancy P. Keller

Fungal Molecular Plant-Microbe Interactions

Details findings related to the relationship between secondary metabolism and fungal development.

Poisonous Plants Of Tennessee, Erica Fritz

Honors Theses

Many poisonous plants occur within Tennessee. These plants may have an evolutionary advantage over competing plants because of the presence of toxic secondary compounds. Consequently, plant species containing poisons may occur more frequently in advanced families than in primitive families. A list was compiled of those plants that occur in Tennessee that are known to be poisonous and these numbers were compared with the total number of species within both advanced and primitive families. Tennessee poisonous plants occur in higher percentages in those families that are primitive and moderately advanced than in those that are advanced.

Nebline, August 2002

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

4-H School Enrichment in Action!
NEP/4-H School Enrichment Participants Eat Healthier
A Community of Character!
Perennials with Colorful Foliage
An Easy Way to Dry Flowers
All America Rose Selections, All Time Classics
2002 August/September Garden Calendar
Stinging Wasps and Bees
Water Conservation Tips
Pesticides in Schools
Bat Sightings Increase in August
Is Fall or Spring Seeding of Alfalfa Best?
Farm Bill Informational Sessions Scheduled
Predicting the Last Irrigation
Deadline Approaches to Terminate Oral Farm Leases
Designing a Low Maintenance Landscape
Free Disease Testing for Backyard Poultry Flocks
New Pesticide Disposal Instructions
NU Landscape Connections: A Showcase Event
Other August/September UNL …

Use Of The Full Length Transcript (Flt) From Mirabilis Mosaic Caulimovirus To Express Chimeric Genes In Plants, Indu B. Maiti, Nrisingha Dey, Robert J. Shepherd

Kentucky Tobacco Research and Development Center Faculty Patents

A full-length transcript promoter from mirabilis mosaic caulimovirus (MMV) is identified and its DNA sequence given. The promoter functions as a strong and uniform promoter for chimeric genes inserted into plant cells. This strong promoter function is exhibited by histochemical assay in seeds and floral organs and by reproductive scores of transgenic plants including the promoter. The promoter preferably includes a 3′ untranslated region that may be from the MMV itself or from a heterologous source with respect to the promoter. The promoter is used in a chimeric gene and in methods for transforming plant cells to obtain transgenic plants, …

Center For Grassland Studies Newsletter, Summer 2002, Volume 8, No. 3

Center for Grassland Studies: Newsletters

• Influence of Topography on Sediment Trapping in Grass Buffers by Dean Eisenhauer, Michael Dosskey, Matthew Helmers, Jason Brothers, and Thomas Franti, Department of Biological Systems Engineering, UNL

• Vivien Allen to be Leu Distinguished Lecturer

• Arbor Links Golf Course Opens

• CGS Tour Showcased Golfing, Hunting, Ranching, Biology Education and Research

• New Grassland Reserve Program in Farm Bill

• Landscape Connections September 14

• Gudmundsen Ranch Open House August 28

Nebline, July 2002

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

2002 Lancaster County Fair
Blue Flowers for the Garden
Lawn Care Tips Save Water During Drought
Fall Webworm
2002 July/August Garden Calendar
“Itchy Chiggers”
Mosquito Prevention and Control
What’s the Scoop on Insect Repellents?
Changes in the Nebraska Pesticide Act May Affect Termiticide Applications
Preparing Bins, Equipment for Harvest
Soybeans American Style: Using Innovation & Experience to Increase Profitability
Pesticide Container Recycling
Plant Turnips for Fall Grazing
Safety and Risk Management in Agricultural Tourism
Caring for Animals When Gone
State’s Rural Population is Growing
July/August UNL Programs and Events of Interest
Packing Your Lunch Can Save You More Than Money …

Forage News [2002-07], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Forage Survey
• U.K. All Commodity Field Day - July 18
• Farm Visits
• Jason Sandefur is Kentucky Forage Spokesperson
• KFGC State Forage Field Day is Sept 5 at New UK Beef Research Farm
• Third Edition of Southern Forages
• Upcoming Events

Fruit Production, Larry A. Sagers

All Archived Publications

No abstract provided.