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Management Considerations For Palmer Amaranth In A Northern Great Plains Soybean Production System, Brian Vab De Stroet, Sharon Clay

Agronomy, Horticulture and Plant Science Faculty Publications

Palmer amaranth (Amaranthus palmeri S. Watson) was first observed in a South Dakota field in 2015. This study assessed Palmer amaranth growth based on planting date (PD), impact on soybean [Glycine max (L.) Merr.] yield, and response of seedlings of South Dakota biotype seedlings to herbicides with different mechanisms of action (MOA). Soybean yield loss was influenced by Palmer amaranth density in 2016 (p = 0.001), with yield losses of 33% at densities greater than 15 plants m⁻² (R² = 0.65), although yield losses at low densities were greater than predicted by the fitted …

Nebline, August 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Kids Eat Right Month

Food Safety Tips for Electric Multi-Cookers

Recipe of the Month

Soybean Management Field Days

Landlord–Tenant Cash Rent Workshop, Aug. 21

Fall is Best for Control of Tough Weeds

Free Water Screening for Nitrates

Include Pets in Your Emergency Plan

Going Batty: Bugs on Bats

Make Your Yard a Greener Place

Garden Guide: Things to Do This Month

Tips for a Fun and Educational Day at the Fair

Upcoming Early Childhood Trainings

Heart of 4-H Volunteer Award: Susan Holland

4-H’ers Test Family and Consumer Science and Entrepreneurship Skills at Life Challenge

4-H’ers Test Their Knowledge of Animals …

Forage News [2019-08], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Reclaiming Rundown Farms - Western KY Summer Forage Tour
• Oats for Fall Pasture or Hay
• KFGC Central KY Field Day
• The Birth of a Rotational Grazing System
• Caldwell County Horse Farm to Host Field Day

Effects Of Sudangrass Cover Crop And Soil Solarization On Weed And Pathogen Management In Organic Strawberry Production, Timothy Jacobs

Master's Theses

Field and lab experiments were conducted to determine the efficacy of sudangrass (Sorghum X drumondii (Nees ex Steud.) Millsp. & Chase) cover crop management techniques and soil solarization on important agricultural weeds and pathogens in organic strawberry production in Central California. Lab experiments assessed the time needed to kill weed seeds at temperatures typically achieved during soil solarization (40°C, 45°C, 50°C, 55°C, and 60°C) in California. Seeds tested included little mallow, redstem filaree, bristly oxtongue, annual sowthistle, common purslane, nettleleaf goosefoot, and redroot pigweed. Efficacy of simulated …

An Integrated Genomics And Phenomics Approach To Study The Evolution Of C4 Photosynthesis, Daniel Santana De Carvalho

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The C4 photosynthetic pathway was first described over 50 years ago. Today, it is known that C4 evolved independently > 60 in plant lineages, which involves understanding not only the genetic, but also the metabolic features and differences involved in this process. Also, several adaptations are involved in the evolution of this type of photosynthesis, for example: changes in leaf anatomy and the evolution of kranz anatomy, physiology and metabolic pathways. In order to further investigate this pathway, different technologies and methods have been developed to unravel genes involved in C4 photosynthesis. With the advances in molecular biology and bioinformatics tools …

Application Of Semi-Hydrophobic Layers To Decrease Bare Soil Evaporation, Jesse Lee Barnes

UNLV Theses, Dissertations, Professional Papers, and Capstones

Evaporative water loss from bare agricultural soils is a primary area of water conservation research. Mulching is the commonly utilized method to decrease evaporative water loss. The most commonly utilized mulch is nonbiodegradable polyethylene sheeting because it tends to decrease evaporative water loss and increase crop yields more than environmentally friendly mulches. This study aimed to test the utility of sand coated with polymerized soybean oil (i.e., hydrophobic sand) as a treatment to reduce bare soil evaporation and an alternative to current practices. Evaporation rates were measured in laboratory soil columns containing both treated and untreated soils. Treatment parameters were …

Poultry Labeling: Knowledge, Perceptions, And Preferences Among Adolescents, Eleni L. Parsons

Graduate Theses and Dissertations

The purpose of this study was to determine the knowledge, perceptions, and preferences of adolescents in regard to the labeling of poultry products. The theory of planned behavior (TPB) and Elaboration Likelihood Model (ELM) were used to display the relationship of perceptions, attitude, and behavior intentions. Quantitative data was collected in a descriptive research design. The population included youth, aged 14 – 18 years, involved in the Arkansas 4-H State O’Rama competition (N = 400). The sample (n = 80) ensured a 90% confidence interval of the population. Data was collected by administering paper surveys that addressed four product labels …

Which Credence Production Attributes Do Consumers Prefer? The Case Of Milk, Emmanouil Petrakis

Department of Agricultural Economics: Dissertations, Theses, and Student Research

The interest of consumers for non-traditional food production attributes like antibiotics free and animal welfare have made consumer preferences more complex. These new attributes, usually non-identifiable by inspection or experience of the product are called credence attributes. The objectives of this study are to analyze consumer preferences for milk production attributes by eliciting the relative importance of these attributes for consumers, and to identify possible sources of heterogeneity related to consumer characteristics and actual purchase data. The research method used to elicit consumer preferences is Paired Comparison Method. Consumers from California and Texas were administered the online survey questionnaire in …

The Value Of Inspection Stations For Detecting Nonindigenous Species Lacking Agricultural Significance: The Mexican Treefrog, Smilisca Baudinii Complex (Duméril And Bibron 1841) (Hylidae), Interdicted In Florida, Usa, From A Shipment Of Peppers, Louis A. Somma

Papers in Herpetology

A Mexican Treefrog, Smilisca baudinii, a nonindigenous species, was interdicted for the first time from an imported shipment of peppers. The value of agriculture inspection stations used to make these interdictions is discussed. This is a single cargo interception (Stage 1: Colautti and MacIsaac 2004) and the first record for S. baudinii intercepted in Florida. Currently no evidence suggests that S. baudinii has been successfully introduced into and established in Florida, although this species could survive climatic conditions in the southern part of the state and at the scheduled destination of this shipment.

Cargo transport of alien species is a …

On The Path To A Resilient Urban Food System In A Rural State: A Mixed-Method Needs Assessment Of Urban Producers And County Extension Agents In Arkansas, Catherine Elizabeth Dobbins

Graduate Theses and Dissertations

This project utilized a mixed-method needs assessment approach to urban agriculture in Arkansas, a predominately-rural state. Chapter II was a qualitative study, using semi-structured, in-depth interviews, that investigated the perceptions, needs, and experiences of Arkansas urban farmers and their interactions with the University of Arkansas Division of Agriculture Cooperative Extension Service (CES). Interviews were conducted with 16 urban farmers in Northwest and Central Arkansas. The interview data revealed individualized needs based on the size, years in operation, and mission of each urban farmer interviewed. General needs were determined, such as market pricing, co-ops, and access to appropriate equipment, but generally …

Effects Of Late Gestation Supplementation And Creep Feeding On Spring Calving Beef Cows In The Nebraska Sandhills, Devin Lynn Broadhead

Department of Animal Science: Dissertations, Theses, and Student Research

The objectives of this research were to 1) evaluate the effects of late gestation supplementation, synchronization and creep feeding on cow and calf production traits 2) evaluate the pooled effects of 5 studies involving late gestation supplementation on cow and calf traits. Experiment 1 was a three year study conducted on 8 pastures at the Gudmundsen Sandhills Laboratory. Cows were assigned to 1 of 4 late-gestation supplementation treatments, postpartum progestin or control, and 1 of 2 creep feed treatments to make up a 4 x 2 x 2 factorial arrangement. Calves were followed through to slaughter.

Experiment 2 involved 5 …

Barriers, Roles, And Information Source Preferences For Utilizing Agricultural Science Projects Among Utah 4-H Extension Professionals, Aleigh Aurin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Agriscience is the growing study of biotechnology, business, and economics within the agriculture industry. Through 4-H, youth can experience hands on learning through different program areas. The purpose of this study was to identify the barriers, roles, and how Utah 4-H personnel preferred to learn about new programs. The study showed time and available volunteers were a barrier for 4-H Extension personnel to implement Agriscience projects. Other results included internet and workshops as the top choices for training programs. The Extension personnel agreed it was their job to involve and educate youth. Yet, need training in how to integrate Robotics; …

Effects Of Alternative Carbohydrate Sources And Soybean-Derived Isoflavones On The Microbiome And Immune System Of Nursery Piglets And Intestinal Porcine Epithelial Cell Line J-2, Sydney Kinstler

Department of Animal Science: Dissertations, Theses, and Student Research

Four experiments were conducted to characterize the microbiome of the piglet and observe effects of diet on growth performance and immunity. In Exp. 1, 96 nursery piglets were fed varying carbohydrate sources and in Exp. 2, 64 piglets were fed a soy protein concentrate or soybean meal as-is or supplemented with an isoflavone concentrate. Body and feeder weights were measured for growth performance estimation. Luminal contents and scrapings were isolated for microbial composition analysis. Fecal and blood samples were extracted in Exp. 2 for microbiome and immunity analysis. Diets did not affect growth performance (P > 0.10); however, Exp. 1 …

Evaluation Of Alpha Amylase Containing Corn On Beef Cattle Performance And Digestibility And Double-Cropped Annual Forages Following Corn Harvest, Mckenna Brinton

Department of Animal Science: Dissertations, Theses, and Student Research

One digestion and three feedlot trials evaluated the effect of a new corn hybrid containing an α-amylase enzyme trait, Syngenta Enogen Feed Corn (SYT-EFC) on site and extent of digestion, ruminal fermentation parameters, and feedlot performance. Experiments utilized corn containing the enzymatic gene (SYT-EFC) compared to commercially available corn (CON), processed as corn silage (CS) kernel processed or not (KP), dry-rolled corn (DRC), high-moisture corn (HMC), or a blend of DRC and HMC. Growing calves fed high inclusions of CS, displayed increased G:F when CS was KP, resulting in a 6.5% improvement in G:F. Hybrid and kernel processing did not …

Ruminant Bloat, Austin Sears, Kerry A. Rood

All Current Publications

This fact sheet describes bloat, a non-infectious disease common among the ruminant species, including types and clinical signs, prevention, and treatment.

User Guide For The 4-H Livestock Weight Calculators, Cody Zesiger, Joshua Dallin, Matthew D. Garcia, Nicole Reed

All Current Publications

This fact sheet is a user's guide for the 4-H livestock weight calculators.

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Bioveterinary Science Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in Animal, dairy and veterinary science, with a bioveterinary emphasis.

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Equine And Management Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in animal, dairy and veterinary science, with equine and management emphasis.

4-H Career Readiness- Animal, Dairy And Veterinary Sciences, Animal And Dairy Science Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in animal and dairy science..

4-H Career Readiness - Animal, Dairy And Veterinary Sciences, Biotechnology Emphasis, Joshua Dallin, Kelsey Romney

All Current Publications

This brochure gives 4-H members information about preparing for careers in Animal, dairy and veterinary science, with a biotechnology emphasis.

Grazing And Harvest Efficiency Of Forage By Cattle On Western Rangelands, Ruger Carter, Eric Thacker, Kevin Heaton, Beth Burritt

All Current Publications

This fact sheet provides guidelines for land managers to reach an appropriate level of utilization that increases animal and rangeland health.

Biosecurity Council Visit To Kununurra August 2019, Biosecurity Council Of Western Australia

Biosecurity published reports

In late 2018, the Biosecurity Council committed to holding regional meetings, possibly annually. The intent of regional meetings are to:

• Engage with local/regional stakeholders on biosecurity matters
• Build networks/relationships with key biosecurity stakeholders
• Provide a conduit to government/agencies for local/regional biosecurity stakeholders.

Council agreed to hold its first regional visit in Kununurra, located in the East Kimberley. The East Kimberley, has a unique set of biosecurity challenges — Kununurra is an important horticulture growing region, there is a large pastoral presence, it adjoins the Northern Territory (NT) border and is in close proximity to Indonesia, it is a hub for …

The Value Of Grazed Corn Residue For Crop And Cattle Producers, Jay Parsons, D. D. Redfearn, Mary E. Drewnoski

Cornhusker Economics

The Western Corn Belt has historically been corn and wheat cropping systems with cattle integrated on nearby grasslands. Recent agricultural production data ranked Nebraska, South Dakota, Kansas, and North Dakota in the top 10 states for both corn and beef cattle production in the United States. In 2017, these four states had about 20% of the beef cow inventory in the United States with Nebraska alone having 1.9 million beef cows (USDA National Agricultural Statistics Service, 2018). Forage-based livestock production is a fundamental component of these agricultural economies. However, a large quantity of grasslands in this region were converted into …

Detection Of Salmonella Typhimurium In Romaine Lettuce Using A Surface Plasmon Resonance Biosensor, Devendra Bhandari, Fur-Chi Chen, Roger C. Bridgman

Human Sciences Faculty Research

Leafy vegetables have been associated with high-profile outbreaks causing severe illnesses. Timely and accurate identification of potential contamination is essential to ensure food safety. A surface plasmon resonance (SPR) assay has been developed for the detection of Salmonella Typhimurium in leafy vegetables. The assay utilizes a pair of well characterized monoclonal antibodies specific to the flagellin of S. Typhimurium. Samples of romaine lettuce contaminated with S. Typhimurium at different levels (between 0.9 and 5.9 log cfu/g) were pre-enriched in buffered peptone water. Three SPR assay formats, direct assay, sequential two-step sandwich assay, and pre-incubation one-step sandwich assay were evaluated. All …

Cloning Of Aflatoxin-Detofizyme Gene And Fusion Expression In Escherichia Coli, Li Wang, Shi Dunsheng, Ding Ke, Cao Pinghua, Zhao Longmei

Food and Machinery

The ADTZ gene primers were synthesized through the ADTZ gene sequence published by GenBank. The ADTZ gene fragment was screened by PCR from the mixed bacterial solution which extracted of the moldy corn sample, and transformed into E. coli by constructing expression vector. The size and concentration of the ADTZ expression product were detected by SDS-PAGE. The degradation ability of the expression product to aflatoxin AFB₁ was tested by enzymatic hydrolysis. The results showed that the ADTZ gene was successfully amplified from the moldy maize suspension. The full length of the ADTZ gene sequence was 2 088 bp, and …

Study On The Dynamics Of Quality Changes In The Process Of Western-Style Ham Cooking, Shi Yu, Deng Li, Xie Le, Yu Bingyan, Liao Xiaomei, Su Jieyu

Food and Machinery

The stability and reliability of kinetic parameters can help enterprises to better predict food quality and use resources efficiently. In this study, the changes of mature quality factors (color and shear-force) and overheating quality factors (moisture and content) in the process of western-style ham cooking were measured and analyzed by kinetic methods. The results showed that in the process of cooking, the changes of color, the moisture content and shear-force of western-style ham followed the first-order reaction kinetics. The z-values of the luminance value and the redness value were 49.69 ℃ and 41.85 ℃, respectively, and the Ea-values were 46.73 …

Establishment Of Trace Pentachlorophenol And Its Sodium Salt In Animal-Origin Foods By Automated Solid Phase Extraction-Coupled With Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry, Chen Yanhong, Chen Sui, Song Anhua, Huang Jingchu, Chen Yueming, Liu Jia, Wang Yu

Food and Machinery

In order to develop a method for the determination of trace pentachlorophenol and its sodium salt in animal-origin foods by automated solid phase extraction-coupled with ultra performance liquid chromatography-tandem mass spectrometry, the effects of extractive solvents, solid phase extraction columns, eluents, mass spectrum and chromatographic separation conditions, internal standards were studied and compared. Finally, the sample was extracted by 5% ammonia acetonitrile, purified by MAX solid phase extraction column and eluted by 10% formic acid methanol. The extract was dried-up with nitrogen and re-dissolved with acetonitrile water solution (50∶50)．The solution was separated on a Kinetex C₁₈ column (100 mm×2.1 …

Simultaneous Determination Of Traditional And New Types Of “Lean Meat Powder” In Pork By Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry, Liu Di, Han Li, Huang Kun, Wang Bin, Wang Heng, Yu Tingting, Wang Huixia

Food and Machinery

An analytical method for the simultaneous determination of new and traditional "lean meat powder"（Clenbuterol, Salbutamol, Ractopamine, Terbutaline, Isoprophane, Chlorpheniramine, Simmatrol, Fenoterol and Olaquindox and its metabolites） in pork by ultra performance liquid chromatography-tandem mass spectrometry was established. Pork samples were extracted with 2% formic acid-acetonitrile solution. The extracts were purified by neutral alumina column. After being dried and concentrated by nitrogen, the hexane was degreased and determined by ultra performance liquid chromatography-tandem mass spectrometry and quantified by internal standard method. Waters HSS C₁₈ column (100 mm×2.1 mm, particle size 1.8 μm) was used. The mobile phase was separated by …

Evaluation On Preservation Of Lentinus Edodes By Pbat/Evoh Modified Atmosphere Film, Wang Limei, Hu Ningxuan, Zhang Jin, Liu Mengyu, Lu Hao, Hu Jian, Dong Tungalag

Food and Machinery

In order to study preservation effects of blend modified atmosphere film to harvested Lentinus edodes，compared with unpacked ones， discussed the preservation effect of PBAT/ EVOH blend films in which added different mass fractions of EVOH (0%, 10%) to Lentinus edodes. The gas composition of Lentinus edodes’ in packaging bag and physical indexes were measured, which stored at 4 ℃ and in humidity of 90%. The results demonstrated that PBAT/10% EVOH blend film could make the packaging environment in a low oxygen and high carbon dioxide status, effectively maintain the sensory quality， such as the color, hardness and vitamin C, in …

Variation Of Nutrition, Flavor And Antioxidant Activity In Tea Beverage Of Tartary Buckwheat Sprout After Fermentation, Li Jun, Lu Yang, Zhao Gang, Xiang Dabing, Chen Zhongai, Liu Hui

Food and Machinery

To identify the changing pattern of nutrition, flavor components, and antioxidant activity, some critical indexes were estimated in tea beverage fermented from plant lactobacillus in tartary buckwheat sprout. These indexes included the content of rutin, quercetin, kaempferol-3-O-rutinoside, total flavonoids, and amino acids, as well as volatile compounds identification, including the radical scavenging rate of DPPH and ABTS in buckwheat sprout beverage. The results showed that the content of rutin remained unchanged, but quercetin and kaempferol-3-O-rutinoside decreased slightly, and the total flavonoids decreased slightly from (120.6±1.9) μg/mL to (114.6±1.7) μg/mL after fermentation. Tea beverage of tartary buckwheat sprout contains six kinds …