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Validation Case Study : Treatment Effectiveness In Aspen Vegetation Type : A Comparison Of Two Types Of Treatments On The Manti-La Sal National Forest, Diane M. Cote

Aspen Bibliography

No abstract provided.

Evaluation Of Different Insecticides And Fabric Types For Development Of Treated Targets For Stable Fly (Diptera: Muscidae) Control, Jerome Hogsette, Alyce Nalli, Lane Foil

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

Stable fly, Stomoxys calcitrans (L.) (Diptera: Muscidae), once only a pest of pastured cattle, has become a serious pest of range cattle in the United States. Because of the difficulties associated with stable fly management under range conditions, a pesticide-impregnated cloth target is being developed as a management tool. We conducted studies to determine the influence of weather, time, fabric type, insecticide type, and insecticide concentration on the mortality of stable flies from a susceptible laboratory colony exposed for 30 s to treated cloth targets. We found that 100% of the flies exposed to trigger (Trigger-Royal Box, 65% polyester and …

Effect Of Lures And Trap Placement On Sand Fly And Mosquito Traps, Ulrich R. Bernier, David F. Hoel, Jerome Hogsette, Hanafi A. Hanafi, Daniel Kline

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

Catches of mosquitoes and sand flies in CO₂ traps baited with three different lures and an unbaited control were compared. The lures examined were carbon dioxide, carbon dioxide plus l-octen-3-ol, and carbon dioxide plus human hair in ethanol. Studies using a 4 x 4 Latin square design, with 3 sets of 4 consecutive trap nights, were conducted between August 6 and September 10, 2007. The study site was the Bahrif Village, Aswan, Egypt. This location had high percentage of Phlebotomus papatasi in sand fly populations, and the low incidence of human cases of leishmaniasis. There were 2,152 sand flies …

Managing And Enhancing Switchgrass As A Bioenergy Feedstock, Robert B. Mitchell, Kenneth Vogel

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

The United States Department of Energy (DOE) has identified switchgrass (Panicum virgatum L.) as a viable perennial herbaceous feedstock for cellulosic ethanol production. Although switchgrass bioenergy research was initiated by USDA-ARS, Lincoln, NE, USA in 1990, switchgrass research has been conducted at this location since the 1930s. Consequently, a significant amount of genetic and agronomic research on switchgrass has been conducted for the Corn Belt and Central Great Plains of the USA that is directly applicable to its use as a biomass energy crop. Similar research must be conducted in other major agroecoregions to verify or modify switchgrass management …

Effects Of Agricultural Conservation Practices On Fish And Wildlife Volume 2, Stuart R. Gagnon, Joseph R. Makuch, Cassandra Y. Harper

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

This bibliography, in two volumes, is part of a multi-volume set developed by the Water Quality Information Center at the National Agricultural Library in support of the United States Department of Agriculture’s Conservation Effects Assessment Project (CEAP). The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes, e.g., water quality improvement, affect various aquatic and terrestrial fauna.

Effects Of Agricultural Conservation Practices On Fish And Wildlife, Stuart R. Gagnon, Joseph R. Makuch, Cassandra Y. Harper

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

This bibliography, in two volumes, is part of a multi-volume set developed by the Water Quality Information Center at the National Agricultural Library in support of the U.S. Department of Agriculture’s Conservation Effects Assessment Project (CEAP). The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes, e.g., water quality improvement, affect various aquatic and terrestrial fauna.

Environmental Management Of Grazing Lands Final Report, Kevin Wagner, Larry Redmon, Terry Gentry, Darren Harmel, Allan Jones

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

Bacteria levels are the number one cause of water quality impairment in Texas. Several recent Total Maximum Daily Loads (TMDLs) in Texas, such as those implemented in the Peach Creek and Leon River watersheds, have identified grazing cattle as a contributor to bacterial water quality impairments in those watersheds through both direct deposition and runoff of their fecal matter to streams. To address this issue, the Texas State Soil and Water Conservation Board (TSSWCB) and the Natural Resources Conservation Service (NRCS) funded this project to assist with development and delivery of technical information and support to ranchers on protection and …

Characterization Of Biological Types Of Cattle: Indicator Traits Offertility In Beef Cows, R. A. Cushman, M. F. Allan, L. A. Kuehn

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

Genetic diversity among breeds of cattle allows producers to select animals for specific environments or market conditions. Reproductive efficiency is a multi-component trait that is largely influenced by environmental influences such as health and nutritional status; however, there are clearly genetic components to reproductive efficiency, and breed differences in a number of indicator traits associated with fertility and cow productivity have been identified. Historical indicators of fertility include scrotal circumference, age at puberty, and postpartum interval. Both age at puberty and postpartum interval are laborious traits to collect in heifers and cows because they require many days of detection of …

Yield And Agronomic Traits Of Waxy Proso In The Central Great Plains, R. F. Heyduck, D. D. Baltensperger, Lenis Alton Nelson, Robert A. Graybosch

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

Proso (Panicum miliaceum L.) is a summer annual grass capable of producing seed in 60 to 90 d. This characteristic, and its efficient use of water, makes it well suited to the short, and often hot and dry, growing season in the high plains of the central Great Plains. The introduction of novel end-use characteristics such as waxy starch can stimulate an increased market for proso. We evaluated 18 experimental F₅ waxy lines derived from a cross of ‘Huntsman’ and PI436626 across seven locations. Genotype × environment variation in waxy proso was mostly a matter of changes in …

Chapter 8. The Importance And Role Of Watersheds In The Transport Of Nitrogen, T. J. Sauer, R. B. Alexander, J. V. Brahana, R. A. Smith

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

A recent report to Congress concerning water quality in the United States indicated that 35%, 45%,and 44'% of the assessed rivers and streams, lakes, and estuaries, respectively, were impaired by one or more pollutants (US Environmental Protection Agency, 1999). Nutrients, primarily nitrogen (N) and phosphorus (P), contributed to the impairment of 30% or 135,000 km of the nation's impaired rivers and streams. 44% of the impaired lakes, and 23% of the impaired estuaries. Excessive nutrient loads are implicated in the eutrophication of lakes and reservoirs in the United States and coastal ecosystems where N is most limiting to primary productivity …

Chapter 2. Transformation And Transport Processes Of Nitrogen In Agricultural Systems, Ronald Follett

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

This chapter discusses the transformation and transport processes of nitrogen (N) in agricultural systems and provides information on overall reservoir sizes for N. Nitrogen is ubiquitous in the environment and is required for the survival of all living things. It is also one of the most important essential nutrients and is central to the production of all crop plants. The most abundant form of N in the environment is elemental dinitrogen (N₂) gas that accounts for 78% of the atmosphere. N₂ gas is inert and is not directly available for plant uptake and metabolism. The atmospheric reservoir …

Chapter 7. Nitrogen In Groundwater Associated With Agricultural Systems, M. R. Burkartaus D, J. D. Stoner

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

Nitrogen, particularly in the form of nitrate, is the most common contaminant in aquifer systems (Freeze and Cherry, 1979). Hallberg (1989) points to agriculture as the most substantial anthropogenic source of nitrate, and Keeney (1986) suggests that this is caused by the intensive and extensive land-use activities associated with crops and animal production. The discussion of the occurrence of nitrogen in groundwater beneath agricultural systems is presented by examining the factors influencing aquifer vulnerability to nitrogen contamination, and by characterizing the geographic distribution of groundwater contamination by nitrogen. Factors that influence aquifer vulnerability are presented in the context of exposure …

Auditing And Assessing Air Quality In Concentrated Feeding Operations, N. A. Cole, R. Todd, B. Auvermann, D. B. Parker

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

The potential adverse effects of concentrated animal feeding operations (CAFO) on the environment are a growing concern. The air quality issues of most concern to CAFO vary but generally include ammonia, hydrogen sulfide, particulate matter, volatile organic compounds, greenhouse gases, and odors. Air pollutants may be regulated by federal and state laws or by nuisance complaints. The United States Environmental Protection Agency, and poultry, swine, and dairy industries recently agreed to the National Air Emissions Monitoring System to fund research on atmospheric emissions from production farms in the United States. Air quality regulations may be based on actual emissions, atmospheric …

Chapter 1. The Nitrogen Cycle, Historical Perspective, And Current And Potential Future Concerns, D. R. Keeney, J. L. Hatfield

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

Nitrogen (N) along with carbon and oxygen is the most complex and crucial of the elements essential for life. Supplementing grain and grass forage crops with organic and inorganic N fertilizers has long been recognized as a key to improving crop yields and economic returns. Globally. N fertilizer is largely used for cereal grain production and accounts for an estimated 40(1r of the increase in per capita food production in the past 50 years (Mosier et al.. 200 I). Smil (200 I) estimates that N fertilizer supplies up to 40% of the world's dietary protein and dependence on N from …

The First Five Years Of The Conservation Effects Assessment Project, Lisa F. Duriancik, Dale Bucks, James P. Dobrowolski, Tom Drewes, S. Diane Eckles, Leonard Jolley, Robert L. Kellogg, Daryl Lund, Joseph R. Makuch, Michael P. O’Neill, Charles A. Rewa, Mark R. Walbridge, Roberta Parry, Mark A. Weltz

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

The Conservation Effects Assessment Project (CEAP) was initiated by the USDA Natural Resources Conservation Service (NRCS), Agricultural Research Service (ARS), and Cooperative State Research, Education, and Extension Service (CSREES) in response to a general call for better accountability of how society would benefit from the 2002 farm bill’s substantial increase in conservation program funding (Mausbach and Dedrick 2004). The original goals of CEAP were to establish the scientific understanding of the effects of conservation practices at the watershed scale and to estimate conservation impacts and benefits for reporting at the national and regional levels. Other federal agencies and nongovernmental organizations …

Endocrine Responses Of Fast- And Slow-Growing Families Of Channel Catfish, Brian C. Peterson, Brian C. Small, Geoffrey C. Waldbieser, Brian G. Bosworth

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

Sixty-eight families of USDA303 channel catfish Ictalurus punctatus were evaluated for growth performance for 30 d. The fastest- and slowest-growing catfish families were further evaluated to examine the hypothesis that genes or gene products associated with the growth regulatory and stress axes can be used to describe differences in growth performance. Research examined mRNA levels of genes involved in the growth hormone–insulin-like growth factor (GH–IGF) network in fast- (family A) and slow-growing (family H) USDA303 catfish. Fish (59.0 ± 2.4 g) were fed for 7 weeks, weighed, and had tissues for RNA extraction. The remaining fish were subjected to an …

Epic Evaluation Of The Impact Of Poultry Litter Application Timing On Nutrient Losses, H. Allen Torbert, Thomas J. Gerik, Wyatte L. Harman, Jimmy R. Williams, Melanie Magre

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

Recently, changes in the utilization practices of animal manures for fertilization have been encouraged to reduce the potential of nonpoint pollution of lakes and streams from agricultural land. However, the potential impact of changing some of these practices has not been fully studied. The objective of this study was to examine the potential impact of limiting poultry litter application times on nutrient movement important to water quality. The WinEPIC model was used to simulate poultry litter applications during the winter months and chemical fertilizer application, with both cool season and warm season grass pastures on the major soil regions of …

History And Ecological Basis For Areawide Pest Management, Norman C. Elliott, David W. Onstad, Michael J. Brewer

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

The traditional approach to pest management is to treat the crop or commodity in a particular management unit before an economically significant infestation of the pest has developed. Determining the need to take corrective action is based on the economic threshold concept, which forms the basis of most integrated pest management programmes (Metcalf and Luckman, 1975). Areawide pest management (AWPM) can be contrasted with traditional pest management in that pest management tactics are used over a broad spatial area, often treating the whole area simultaneously to maintain the pest below economic levels or, in some cases, completely eradicate it. A …

Salt Cedar Areawide Pest Management In The Western Usa, Raymond I. Carruthers, C. Jack Deloach, John C. Herr, Gerald L. Anderson, Allen E. Knutson

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

Salt cedar (Tamarix spp. (Tamaricaceae: Tamaricales)) is a group of exotic shrubs to small trees that have invaded many riparian areas and lake shores across western North America. Of the 54 species known worldwide (Baum, 1967, 1968), ten species of salt cedars have been introduced into the USA (Crins, 1989), primarily from their countries of origin across Europe and Central Asia. They are also native in Africa and the Indian subcontinent of Asia. No species from the entire family Tamaricaceae are native to North America, and only a restricted group of six species of more distantly related …

Serotonin Localization In The Turkey Vaginal But Not Sperm Storage Tubule Epithelia, M. R. Bakst, V. Akuffo

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

Elucidating the cellular and molecular mechanisms regulating sperm selection and transport in the vagina of the hen had been the focus of a limited amount of research over the past decade. New observations indicate the presence of nonneuron endocrine cells in the epithelia lining the lumina of the turkey hen vagina and uterovaginal junction. Although no cells in the vagina or uterovaginal junction surface epithelia exhibited argentaffin staining, typical of cells containing neurosecretory granules, cells restricted to the vaginal and uterovaginal junction but not the sperm storage tubule epithelia were immunoreactive positive to serotonin. We speculate that if released into …

A Gel-Based Reference Map Of The Porcine Hepatocyte Proteome, Thomas J. Caperna, Amy E. Shannon, Wesley M. Garrett

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

The overall goal of our research is to characterize and identify gene expression profiles of porcine hepatic cells. In this study, we have prepared two-dimensional electrophoresis maps of cytosol and membrane fractions from freshly prepared hepatocytes which were pooled from three crossbred pigs (35–69 kg). Following isoelectric focusing with three pH range immobilized pH gradient strips (pH 3–6, 5–8 and 7–10) and staining the second dimension gels with colloidal Coomassie blue, 728 protein spots were picked and digested with trypsin. Extracted tryptic peptides were initially subjected to matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI–TOF-MS) analysis for identification of proteins …

Hessian Fly, Jeffrey J. Stuart, Ming-Shun Chen, Marion O. Harris

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

The Hessian fly (Mayetiola destructor) is a gall-forming insect (Harris et al. 2006) with several attributes that make it suitable for genetic analysis: a short life cycle (30 days), a small genome (158 Mb) (Johnston et al. 2004), and polytene chromosomes. The reproductive biology and behavior of the insect also make it an attractive model (Harris and Rose 1989,1990; Bergh et al. 1990; Kanno and Harris 2000; Morris et al. 2000; Harris et al. 2001). Compared to most plant-feeding insects, Hessian flies can be reared in a small space. Unlike gall-forming aphid species, the Hessian fly is always …

Pastoral Profits Guide, A Paddock Guide To Achieving Sustainable Livestock Productivity, Mark Alchin, Jim Addison, Valarie Shrubb, Zac Cockerill, Matthew Young, Tim Johnson, Greg Brennan

All other publications

Most pastoralists appreciate the need to deliver an economic, environmental and social 'profit' from their business. Achieving these profits can be a real challenge given the comparatively low productive potential and the substantial seasonal variation in the WA Southern Rangelands region. This guide was written to assist pastoralists to meet their specific livestock production, financial and range condition objectives through the better alignment of feed demand (stocking rate) to feed supply (carrying capacity). We provide nine basic steps that simplify the process of managing the feed supply, equipping pastoralists with the tools to make· decisions and to critically assess the …

Taxonomy And Threatened Categories Of Three Achillea L. (Asteraceae-Anthemideae) Species Previously Cited In The Data Deficient (Dd) Category, Turan Arabaci, Bayram Yildiz

Turkish Journal of Botany

This study presents the taxonomy and threatened categories of 3 Achillea L. (Asteraceae-Anthemideae) species: A. membranacea (Labill.) DC., A. brachyphylla Boiss. & Hausskn., and A. boissieri Hausskn. ex Boiss. These species belong to sect. Babounya (DC.) O.Hoffm. and were previously placed in the data deficient (DD) category in the Red Data Book of Turkish Plants. Descriptions, localities, distribution map, and images of the species are given. Threatened categories of the species were determined as A. membranacea in VU, and A. brachyphylla and A. boissieri in EN.

Determination Of Airborne Lead Contamination In Cichorium Intybus L. In An Urban Environment, Di̇lmaç Yakupoğlu, Tüli̇n Güray, Deni̇z Yurtsever Sarica, Zeki̇ Kaya

Turkish Journal of Botany

The major source of environmental lead (Pb) is the combustion of leaded gasoline. After emission as exhaust, lead in the air falls to earth and contaminates soil and plants. Seventeen wild chicory (Cichorium intybus L.) plant samples were collected from each of 2 urban sites in Ankara, one is located at the road side of major intercity road (heavy traffic) and the other one is located in relatively less traffic area that is about 1 km away from the first location. Lead content of chicory plants were analyzed by a flame atomic absorption spectrophotometer. The mean lead concentrations in the …

Studies On The Effect Of Maleic Hydrazide On Root Tip Cells And Pollen Fertility In Trigonella Foenum-Graecum L., Farha Jabee, Mohammad Yunus Khalil Ansari, Danish Shahab

Turkish Journal of Botany

In the present investigation, the effect of maleic hydrazide (MH) has been studied on seed germination, mitosis, and pollen fertility of Trigonella foenum-graecum L. to test its cytotoxicity. Six different concentrations (0.01%, 0.02%, 0.03% 0.04%, 0.05%, and 0.06%) of maleic hydrazide (MH) were given at seed level. The abnormalities noticed were both physiological and clastogenic. Fragments, stickiness of chromosomes, univalents, multivalents, and anaphase bridges were the most frequent abnormalities. The decrease in seed germination and pollen fertility was found significant at 0.05 level. Mitotic index reduced gradually as the concentrations of Maleic Hydrazide increased and it was found significant at …

Challenges Of In Situ Conservation Of Crop Wild Relatives, Vernon Hilton Heywood

Turkish Journal of Botany

Crop wild relatives (CWRs) will gain in importance as changing climates put both traditional and advanced cultivars under increasing stress, leading to a need for plant breeding to produce new varieties able to grow under the new climate regimes. Traditionally, the approach to the conservation of CWRs has been ex situ - the collection and maintenance of seed accessions in national, regional, and international germplasm banks, supplemented by field genebanks for species with recalcitrant seeds. More recently the need to maintain CWRs in their natural habitats (in situ) has been advocated. This is very different from on-farm conservation of traditional …

Nebline, January 2008

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

“Parents Forever” Class Teaches Parents How to Help Children Through a Divorce
Coalition to Assist Children of Parents Experiencing Divorce
Nebraska’s New Parenting Act Puts Children at the Center—Not in the Middle—of Divorce
Upcoming Pesticide Applicator Trainings
Crop Protection Clinic, Jan. 22
Computerized Farm Financial Recordkeeping Workshop, Feb. 16
Year-Round Insect Pests in the Home
Ultrasonic/Subsonic Devices Not Effective for Pest Control
Beginning Beekeeping 2-Day Workshop
Got Deer Problems or Pocket Gophers? UNL Wildlife Experts Need Your Help
Florist Azalea Plant Care
A Gardener’s New Year’s Resolutions
Proper Landscape Plant Maintenance
About Soil Testing
Attract More Birds by Offering a …

2008 Spring Seed Book, Nebraska Crop Improvement Association

Nebraska Crop Improvement Association Seed Guides

PLANT VARIETY PROTECTION ACT and HOW IT BENEFITS YOU!

PERENNIAL FORAGE GRASSES

TURFGRASSES

OATS

MILLET

HYBRID SEED CORN

QUALITY ASSURANCE® PROGRAM

APPROVED SEED CONDITIONERS

CUSTOM CERTIFIED CONDITIONERS

2007 NCIA MEMBERS

Recent Advances In Medicago Truncatula Genomics, Jean-Michel Ané, Hongyan Zhu, Julia Frugoli

Plant and Soil Sciences Faculty Publications

Legume rotation has allowed a consistent increase in crop yield and consequently in human population since the antiquity. Legumes will also be instrumental in our ability to maintain the sustainability of our agriculture while facing the challenges of increasing food and biofuel demand. Medicago truncatula and Lotus japonicus have emerged during the last decade as two major model systems for legume biology. Initially developed to dissect plant-microbe symbiotic interactions and especially legume nodulation, these two models are now widely used in a variety of biological fields from plant physiology and development to population genetics and structural genomics. This review highlights …