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Canopy-Tree Influences Along A Soil Parent Material Gradient In Pinus-Ponderosa-Quercus Gambelii Forests, Northern Arizona, Scott R. Abella, Judith D. Springer

Public Policy and Leadership Faculty Research

ABELLA, S. R. (Public Lands Institute and School of Life Sciences, University of Nevada, Las Vegas, Las Vegas, NV 89154-2040) AND J. D. SPRINGER (Ecological Restoration Institute, Northern Arizona University, Flagstaff, AZ 86011-5017). Canopy-tree influences along a soil parent material gradient in Pinus ponderosa- Quercus gambelii forests, northern Arizona. J. Torrey Bot. Soc. 135: 26–36. 2008.—The distribution of canopy trees can impose within-site patterns of soil properties and understory plant composition. At ten sites spanning a soil parent material gradient in northern Arizona Pinus ponderosa-Quercus gambelii forests, we compared soils and plant composition among five canopy types: openings, Pinus ponderosa …

Wayne E. Sabbe Arkansas Soil Fertility Studies 2005, Nathan A. Slaton

Arkansas Agricultural Experiment Station Research Series

Rapid technological changes in crop management and production require that research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.

Determination Of The Primary Levels Of The Residues Of The Seeds Of Wheat, Maize, And Barley For The Elaboration Of The Food Mixture For Rabbits, Aida Esperanza Morejon Jacome

Theses and Dissertations

The present investigation was done in the parish of Chaltura, Granja "La Pradera" which belongs to the University Técnica del Norte. The main objective of this investigation was to determine the primary levels of the residues of the seeds of wheat, maize, barley for the elaboration of the food mixture for rabbits. The evaluated variables, food consumed, weight gain, food value, protein percentage, production cost per treatment. Previously to the initiation of the field phase bromatological analysis were done on the three food mixtures in the National Institute of Farming Investigation, Quality and Nutrition Area. The treatments were four: TI …

Energy Value In Llamas (Lama Glama) Fed With Alfalfa Hay (Modicago Sativa) And Barley (Hordeum Vulgare) For Apparent Digestibility In Vivo In The National Camelid Germplasm Bank (Ceac), Edwin Gonzalo Ugarte Huanca

Theses and Dissertations

In this experiment, we used four male llamas that were three to four years of age from the Khara race. They were divided into two ad libitum feeding groups. The digestible energy (ED) was determined using samples that were sent to the laboratory. These samples were derived from a conventional in vivo assay using the method of total fecal collection in order to determine the difference between energy consumed and energy excreted. Metabolizable energy was calculated by deducting digestible energy, energy loss in the urine and energy loss in the gases (methane). Urinary energy was determined through the measurement of …

Agrobacterium Tumefaciens-Mediated Transformation Of Tobacco (Nicotiana Tabacum L.) Leaf Disks: Evaluation Of The Co-Cultivation Conditions To Increase Beta-Glucuronidase Gene Activity, Sunjung Park

LSU Master's Theses

Agrobacterium tumefaciens-mediated transformation is generally used for genetic transformation of higher plants. Several experimental factors important for the increase of beta-glucuronidase (GUS) reporter gene activity were evaluated in this study using leaf disks of tobacco (Nicotiana tabacum L. cv. Xanthi). We found that co-cultivation temperature at 20C is the most critical factor to obtain the reproducible enhancement of GUS activity. pCAMBIA 1305.01 resulted in higher GUS activity than the other two pCAMBIA vectors 1301 and 1305.02. The highest GUS activity and transformation efficiency were achieved under the following experimental conditions: Agrobacterium tumefaciens strain LBA4404 containing pCAMBIA1305.01 was grown overnight at …

Performance Of A Sisal Fibre Fixed-Bed Anaerobic Digester For Biogas Production From Sisal Pulp Waste, A. Mshandete, A. K. Kivaisi, M. S. T. Rubindamayugi, L. Björnsson, B. Mattiasson

Tanzania Journal of Science

A single stage anaerobic digester employing a sisal fibre waste fixed bed was studied for biogas production from sisal pulp waste. The fibre was colonized by microorganisms involved in biogas production. The sisal pulp waste to be digested was fed from the top and was sprinkled intermittently with recirculating leachate from the material. Organic loading rates of 0.1-10 kg volatile solids (VS) m-3d-1 could be applied and methane yields in the range of 0.13-0.48 m3 CH4 kg-1 VS added were obtained. The average methane content in the biogas produced from sisal pulp waste was 55%, and the biogas production rate …

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 2005, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2005 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 2005 crop season including: temperature and precipitation data, field evaluations of woody plant materials, alfalfa production, winter wheat breeding, oat research, resistance of sunflower germplasm to the red sunflower seed weevil, weed control, fertilizer and soil test effects on soybeans, small grain variety performance trials, evaluation of native and naturalized grasses for reduced-input turf in the Northern Plains, and the Highmore drip irrigation study final report.

Center For Grassland Studies Newsletter, Winter 2005, Volume 11, No. 1

Center for Grassland Studies: Newsletters

Grass Seed Production Research in Nebraska Panhandle by David Baltensperger, Department of Agronomy and Horticulture, UNL

Can Perennial Grass Pastures be Profitable in the Great Plains by Rob Mitchell, Ken Vogel, and Gary Varvel, USDA-ARS, Lincoln, NE Terry Klopfenstein (Animal Science), Dick Clark (Agricultural Economics), and Bruce Anderson (Agronomy and Horticulture), UNL

Forum – Monitoring Rangeland Health for an Experiment in Public Land Ownership

2005 Nebraska Grazing Conference to be Aug. 8-9

PGM Program Swings into 2nd Semester

Dates for 7th Nebraska Ranch Practicum Set

Changing Natural Landscapes: Ecological and Human Dimensions

Forage News [2005-12], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Grazing Conference in Cave City
• Renew KFGC Membership
• National Forage Meetings
• Still Room for Improvement
• Growth Performance by Fall-Calving Cows Grazing Tall Fescue Pastures with Different Proportions Stockpiled Until Late Fall
• Effect of Maturity on Quality of Various Small Grains
• Effect of N Prices on Fertilization of Cool-Season Grasses
• Value and Amount of Nitrogen Fixed by Various Legumes
• Reflections: 2005
• Upcoming Events

Loss Of Nitrate-Nitrogen By Runoff And Leaching For Agricultural Watersheds, M. A. Elrashidi, M. D. Mays, A. Fares, C. A. Seybold, J. L. Harder, S. D. Peaslee, Pam Vanneste

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

The loss of nutrients in runoff and leaching water from agricultural land is a major cause of poor water quality in the United States. Scientists (NRCS) developed a technique to estimate the impact of agricultural watersheds on natural water resources. The objectives were to apply the technique on Wagon Train (WT) watershed in Nebraska to predict: (i) loss of water by surface runoff and subsurface leaching, (ii) loss of nitrate-N from soils by runoff and leaching, and (iii) nitrate-N loading for WT reservoir. The annual loss of water was estimated at 4.32 million m³ for runoff and 0.98 million …

Comparison Of Glomalin And Humic Acid In Eight Native U.S. Soils, K. A. Nichols, S. F. Wright

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

Two important extractable fractions of soil organic matter (SOM) are humic acid (HA) and glomalin-related soil protein (glomalin). Optimizing the purity of each fraction is necessary to correlate fraction quantity and molecular characteristics with soil quality. Manipulation of extraction sequence and controlled precipitation of HA were used to evaluate co-extraction of HA and glomalin. Eight bulk soil samples (0 to 10 cm depth) were collected from four U.S. states (Colorado, Nebraska, Maryland, and Georgia). In Experiment 1, glomalin extraction (50 mM citrate, pH 8.0, at 121 'C) was followed by HA extraction (0.1 N NaOH at room temperature), and Experiment …

Southeast South Dakota Experiment Farm Annual Progress Report, 2005, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This document highlights 32 crop and livestock research and demonstration reports from projects conducted at Southeast Research Farm in 2005. It is published by the South Dakota Agricultural Experiment Station and Cooperative Extension Service at South Dakota State University in cooperation with the Southeast South Dakota Experiment Farm Corporation. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, alfalfa yield test, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.

Effects Of Common Forage Phenolic Acids On Escherichia Coli O157:H7 Viability In Bovine Feces, J. E. Wells, E. D. Berry, V.H. Varel

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

Ruminant animals are carriers of Escherichia coli O157:H7, and the transmission of E. coli O157:H7 from cattle to the environment and to humans is a concern. It is unclear if diet can influence the survivability of E. coliO157:H7 in the gastrointestinal system or in feces in the environment. Feces from cattle fed bromegrass hay or corn silage diets were inoculated with E. coliO157:H7, and the survival of this pathogen was analyzed. When animals consumed bromegrass hay for <1 month, viable E. coliO157:H7 was not recovered after 28 days postinoculation, but when animals consumed the diet for >1 month, E. coli …

Production And Handling Practices For Safe Produce, Pamela L. Brady, Justin R. Morris

AAES Research Reports and Research Bulletins

The University of Arkansas Division of Agriculture received a grant from the USDA’s Initiative for Future Agriculture and Food Systems program to help small- and medium-sized farms become more profitable and to therefore add stability to the family farm. One approach to doing this is to help farmers growing produce reduce or eliminate safety hazards which may be associated with their products.

Bromacil, Ecological Risk Assessment, Final Report, Ensr International

All U.S. Government Documents (Utah Regional Depository)

The Bureau of Land Management (BLM), United States Department of the Interior (USDI), is proposing a program to treat vegetation on up to six million acres of public lands annually in 17 western states in the continental United States (US) and Alaska. As part of this program, the BLM is proposing the use of ten herbicide active ingredients (a.i.) to control invasive plants and noxious weeds on approximately one million of the six million acres proposed for treatment. The BLM and its contractor, ENSR, are preparing a Vegetation Treatments Programmatic Environmental Impact Statement (EIS) to evaluate this and other proposed …

Nebline, November/December 2005

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Community Food Programs Help Limited-Resource Families Eat Healthy
NEP Teaches People How to Stretch Their Food Dollar
Get Involved in the Fight Against Hunger
Free Soybean Cyst Nematode Sample Kits Available
Don’t Forget to Winterize Your Underground Sprinkler System
Agricultural Tax Planning for 2005
Nebraska Arboretum Speakers Bureau
Setting Goals for Your Small Farm
Prepare Horses For Winter
Improve Nebraska Woodlands in Late Fall and Winter
“Woody Florals” Acreage Insights Clinic, Nov. 10
Prevent Soil Erosion
Thanksgiving — the Tradition Continues
Ginger Citrus Rice Recipe
FREE Healthy Desserts Presentation, Nov. 15
$tretch Your Food Dollar with Leftover Turkey
President’s Notes …

Forage News [2005-11], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• KFGC Awards: Nominations Due by December 14
• Forages at KCA
• Program Set for Grazing Conference
• Alfalfa Conference to be in Lexington
• How Sensitive is Alfalfa to Low Soil pH?
• Fertilizer Value in Hay
• Prussic Acid and Nitrate Poisoning Are Not the Same
• Hay May be Tight
• Consider Grazing Crop Residue
• Ever Been to a Hay Auction………?
• Upcoming Events

Life History Traits Of The Threatened Purple Amole (Chlorogalum Purpureum Var. Purpureum), John A. Guretzky, Elizabeth Clark, Darlene Woodbury

Department of Agronomy and Horticulture: Faculty Publications

Researchers monitored the threatened plant, purple amole (Chlorogalum purpureum var. purpureum) at Fort Hunter Liggett, California, from 1998 to 2004. The objectives of this research were to complete a statistical analysis of these data to evaluate: (1) demographics; (2) trends in population density; and (3) the relationship of purple amole to associated species, biological soil crusts, and disturbance. Overall, purple amole was most likely to flower and have greater seed production when it attained about 8 leaves or widths of 7 to 8 mm for its widest leaf, revealing a clear relationship between plant size and successful reproduction and seed …

Cattle Grazing And Tracked Vehicle Training On Central And Southwest U.S. Army Lands, John A. Guretzky, Jeffrey Fehmi, Alan Anderson

Department of Agronomy and Horticulture: Faculty Publications

Sustainability of training lands continues to be a primary concern for natural resource managers on Army installations. Tracked vehicle training, the main disturbance of grasslands, does not occur in isolation from other land uses including cattle grazing. Yet, no documented studies exist examining the interactive effects of these activities on soils and vegetation. The objective of this research was to begin filling this knowledge gap. This report reviews the lit-erature documenting the impacts of tracked vehicle training and cattle grazing on soils and grassland plant communities and discusses potential interactive effects. Responses to tracked vehicle training generally included increased soil …

Insect Trap: United States Patent, Hogsette Et Al.- November 2005, Jerome Hogsette, David Carlson

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

A safe, indoor trapping device for trapping and killing flying insects can be used in areas containing food, containing animals, for food preparation, etc. The device includes at least one removable trap body, a toxicant panel, and an insect collector.

Disease Resistance Conferred By The Expression Of A Gene Encoding A Synthetic Peptide In Transgenic Cotton (Gossypium Hirsutum L.) Plants, Kanniah Rajasekaran, Jeffrey W. Cary, Jesse M. Jaynes, Thomas E. Cleveland

Faculty Articles

Fertile, transgenic cotton plants expressing the synthetic antimicrobial peptide, D4E1, were produced through Agrobacterium-mediated transformation. PCR products and Southern blots confirmed integration of the D4E1 gene, while RT-PCR of cotton RNA confirmed the presence of D4E1 transcripts. In vitro assays with crude leaf protein extracts from T0 and T1 plants confirmed that D4E1 was expressed at sufficient levels to inhibit the growth of Fusarium verticillioides and Verticillium dahliae compared to extracts from negative control plants transformed with pBI-d35SΩ-uidA-nos (CGUS). Although in vitro assays did not show control of pre-germinated spores of Aspergillus flavus, bioassays with cotton …

Contributions Of Heterosis And Epistasis To Hybrid Fitness, Mitchell B. Cruzan

Biology Faculty Publications and Presentations

Early-generation hybrid fitness is difficult to interpret because heterosis can obscure the effects of hybrid breakdown. We used controlled reciprocal crosses and common garden experiments to distinguish between effects of heterosis and nuclear and cytonuclear epistasis among morphotypes and advanced-generation hybrid derivative populations in the Piriqueta caroliniana (Turneraceae) plant complex. Seed germination, growth, and sexual reproduction of first-generation hybrids, inbred parental lines, and outbred parental lines were compared under field conditions. Average vegetative performance was greater for hybrids than for inbred lines, and firstseason growth was similar for hybrids and outbred parental lines. Hybrid survival surpassed that of inbred lines …

Ecological Costs And Benefits Of Defenses In Nectar, Lynn S. Adler, Rebecca E. Irwin

Dartmouth Scholarship

The nectar of many plant species contains defensive compounds that have been hypothesized to benefit plants through a variety of mechanisms. However, the relationship between nectar defenses and plant fitness has not been established for any species. We experimentally manipulated gelsemine, the principal alkaloid of Carolina jessamine (Gelsemium sempervirens), in nectar to determine its effect on pollinator visitation, nectar robber visitation, and male and female plant reproduction. We found that nectar robbers and most pollinators probed fewer flowers and spent less time per flower on plants with high compared to low nectar alkaloids. High alkaloids decreased the donation of fluorescent …

Influence Of Simultaneous Infestations Of Prostephanus Truncatus And Sitophilus Zeamaison The Reproductive Performance And Maize Damage, C P Rugumamu

Tanzania Journal of Science

This study examined the combined effect of Prostephanus truncatus and  Sitophilus zeamais infestations on their reproductive performance and on the damage they cause to maize variety ZM 621 with 12.5% moisture content. The specific objective was to determine the number of the insect pests at F1 and F2 and the grain weight losses caused by the simultaneous pests\' infestations of shelled maize in the search for a control strategy. The results showed a change in adult insect numbers from F1 to F2. During single infestation the change in P. truncatus was 47.54% while in simultaneous infestations it was 41.66%. The …

Distribution And Abundance Of The Edible Orchids Of The Southern Highlands Of Tanzania, Ams Nyomora

Tanzania Journal of Science

All orchids have showy flowers and many are therefore popular as exotic houseplants as well as contributing significantly to eco-tourism. A special attribute of some orchid genera is the production of edible tubers, an attribute that can contradict eco-tourism if harvesting is not done sustainably. Such is the case in the Southern Highlands where for example, Kitulo Plateau has been gazetted to be a National Park but where edible orchid harvesting is a serious conservation problem. Botanically, unsustainable harvesting can mean the loss of important germplasm even before some species are known to exist. A field survey was undertaken for …

Center For Grassland Studies Newsletter, Fall 2005, Volume 11, No. 4

Center for Grassland Studies: Newsletters

Using Legumes to Boost Quality of Smooth Bromegrass Pastures by Walter Schacht and Bruce Anderson, Department of Agronomy and Horticulture, UNL

The Grass is Always Greener: Consumer Preferences for Ornamental Grasses by Kim Todd, Department of Agronomy and Horticulture, UNL

PGM Enrollment More Than Doubles in Second Year

5th Annual Nebraska Grazing Conference Covered Diverse Topics Call for Papers, Third National Conference on Grazing Lands Planning: An Important Key to Native Planting Success

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.

Plant Organellar Protein Targeting: A Traffic Plan Still Under Construction, Sally Ann Mackenzie

Center for Plant Science Innovation: Faculty Publications

It has long been understood that specific features of a protein and its corresponding import apparatus dictate the behavior of mitochondrial proteins in their intracellular targeting behavior. In plants, the process by which proteins are directed to organelles has been influenced uniquely by the introduction to the cell of plastids. Parallel functions carried out within the mitochondrion and plastid permit the sharing of proteins and emergence of mechanisms to facilitate dual-targeting of the nuclear-encoded products to both compartments. These include transcriptional and translational variations, relaxation of translation initiation controls and conditional cellular influences. Details of the dual targeting system are …

Forage News [2005-10], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Kentucky Agricultural Income Tops Four Billion Dollars
• New Tall Fescue Book
• Alfalfa Hay for Horses: Myths and Realities
• Building Hay Storage Structures with Agriculture Development Board’s Cost Share Program
• KFGC Fall Board Meeting
• AFGC Annual Meeting - San Antonio March 10-14
• Late Fall Fertilization of Cool Season Grasses
• Prussic Acid Poisoning
• Comparative Lamb and Heifer Growth Rates on Non-Toxic and Endophyte-Free Tall Fescue
• Upcoming Events

Nebline, October 2005

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Students Prepare for Careers at UNL College of Ag and Natural Resources
CASNR’s “Ensuring Your Future Guarantee”
Check Out UNL and CASNR
Drying Gourds
Deep Watering Trees in Fall can Prevent Winter Drying Injury
Gladiola Fall Care
Storing Vegetables
Farmer Question: How Can I Reduce Energy Costs When Drying Grain?
Avoid Pasture Damage During Fall Grazing
Food Safety 101: USDA Offers Tips for College Students
One-Dish Rosemary Chicken and White Beans Recipe
Healthy Desserts Presentation, Nov. 15
Breakfast Power
How Healthy is Your Home? Be Aware of Indoor Air Pollutants
President’s Notes — Janet’s Jargon
FCE News & Events
Household …