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Articles 271 - 300 of 2802
Full-Text Articles in Entire DC Network
The Influence Of Cover Crop Termination Strategies And Supplemental Nitrogen On Sweet Corn Yield And Nitrogen Use Efficiency, Sachina Sunuwar
The Influence Of Cover Crop Termination Strategies And Supplemental Nitrogen On Sweet Corn Yield And Nitrogen Use Efficiency, Sachina Sunuwar
Masters Theses
Cover crops are instrumental in nutrient management and soil health. A field experiment was conducted from fall 2020 to summer 2021 to evaluate the efficiency of different cover crop termination techniques and supplemental nitrogen on sweet corn yield, ear quality and nitrogen use efficiency. The four termination types are herbicide and disk tillage (HDT), herbicide no-till (HNT), cultivation disk till (CDT), and roller crimped no-till (RCNT). These termination types were each divided into four different nitrogen treatment: 0%, 33%, 67% and 100% of the recommended doses (145 kg haˉ¹). Sweet corn yield was highest and % unfilled tip was lowest …
School Farms And Stem: Using Institutional Resources To Promote Deeper Learning, Catherine Clare Knowlton
School Farms And Stem: Using Institutional Resources To Promote Deeper Learning, Catherine Clare Knowlton
Food Systems Master's Project Reports
Given the structural problems in education laid bare by the recent pandemic, we as a community of educators need to re-evaluate goals for secondary science education. Specifically, classrooms and course content must evolve to become more socially responsive, inclusive, and interdisciplinary. Agricultural education is a demonstrably effective way to boost STEM (science, technology, engineering, and mathematics) comprehension as well as SEL (social-emotional learning) skills building. In this study, I use qualitative interview methods to assess current agricultural coursework at independent schools around New England. Results show intriguing themes stemming from designing and implementing farm-based courses, although there are logistical barriers …
Quantifying The Effects Of Abiotic Stress On Early Season Growth, Development, And Physiological Characteristics In Corn, Charles Hunt Walne
Quantifying The Effects Of Abiotic Stress On Early Season Growth, Development, And Physiological Characteristics In Corn, Charles Hunt Walne
Theses and Dissertations
Corn is one of American agriculture's greatest success stories, where we have witnessed incredible increases in yield potential over the last half-century. However, abiotic stress is still the primary limiting factor preventing plants from reaching their true yield potential. In addition, agriculture is not exempt from the deleterious effects of changing weather patterns and the altered climate our world will face as time progresses. Thus, increasing our understanding of how crops interact with their environment both above and below the soil will be crucial to increasing production on a global scale while maximizing profitability at a local level. Five studies …
Perceptions Of Middle School Students On Gardening, Julie B. White
Perceptions Of Middle School Students On Gardening, Julie B. White
Theses and Dissertations
The purpose of this study was to describe the perceptions middle school students had about agriculture and gardening as part of the GrOW (Gardening and Overall Wellness) Program. This included multiple constructs, including students’ gardening efficacy, perceptions of those who had already completed the GrOW Program, perceptions of those who had not completed the GrOW Program, and students’ future interests in gardening. The population for this study was sixth-grade students at the Partnership Middle School in Starkville, Mississippi. A quantitative instrument was used to assess the perceptions of the students (n = 222).
Overall, students had positive perceptions about the …
Effect Of Mycorrhizae Inoculation On The Growth And Success Of Three Taxodium Distichum Hybrids In Saline - Impacted Coastal Soils, Elif Ilhan
Electronic Theses and Dissertations
In 2008, Galveston Island was severely impacted by Hurricane Ike, resulting in high salt deposition in the soil and groundwater. This caused a loss of many native plant species. A study was initiated to determine effective ways to promote the growth conditions of three bald cypress genotypes (Taxodium distichum var distichum and Taxodium distichum var mexicanum crosses) in salt-affected soils. The treatments applied were mycorrhizae inoculation, fertilizer application, and a combination of mycorrhizae inoculation and fertilizer application. A total of sixty (60) trees planted in plots of three rows and divided into five randomized replication blocks of four treatments …
Blue Zones: Unlocking Key Themes In The Centenarian's Life, Grace Beer, Grace O. Beer
Blue Zones: Unlocking Key Themes In The Centenarian's Life, Grace Beer, Grace O. Beer
Honors College Theses
Longevity has been sought after in certain areas of the world, and there are specific regions where this has been achieved. There is an American average life expectancy of 72 years old, but individuals in “Blue Zones” here in America and other areas of the world are expected to and have proven to live well beyond 100. The areas of Okinawa, Sardinia, Nicoya, Ikaria, and Loma Linda are classified as Blue Zones, and there could be more of an understanding of how these people live the way they do to have such healthy physical outcomes. To deeply understand the strategy …
Poa Annua: An Annual Species?, Devon E. Carroll
Poa Annua: An Annual Species?, Devon E. Carroll
Doctoral Dissertations
Poa annua L. is ranked the most troublesome turfgrass weed but can also be a highly desirable turfgrass species. As the Latin name annua implies, the species is thought to persist via an annual life cycle; yet there are many reports in literature of P. annua persisting perennially. Considering that P. annua senescence patterns do not align with other true annual species such as Triticum spp. and Zea mays L., we hypothesized that P. annua presents itself similarly to other perennial, cool-season, turfgrass species that are subject to a confluence of environmental factors in summer that can cause mortality. …
Possible Surf And Turf Mutualism: The Potential Of Yeast Grown From Maine Wood As Feed For Atlantic Salmon, Gina Scott
Possible Surf And Turf Mutualism: The Potential Of Yeast Grown From Maine Wood As Feed For Atlantic Salmon, Gina Scott
All Theses And Dissertations
With fed aquaculture expanding, challenges are being faced with increasing demands for protein for feed. Fishmeal as a protein is at high cost and low supply, and meals from terrestrial agriculture can impact fish health; both also generate environmental challenges. One potential alternative protein is yeast, which can be grown using waste softwood. Simultaneously, Maine forestry has lost buyers of waste wood with several paper mill closures. If yeast is produced as an alternative protein for fish feed using this wood, both Maine Atlantic salmon farming, Maine’s most valuable form of aquaculture, and Maine forestry could benefit. Environmental impact and …
Exploring The Implementation Of Dike Building And The National Endowment For The Oceans Act To Support Coastal Restoration In Louisiana, Taylor Perrodin
Exploring The Implementation Of Dike Building And The National Endowment For The Oceans Act To Support Coastal Restoration In Louisiana, Taylor Perrodin
Honors Theses
No abstract provided.
Factors Affecting Graduation With Honors: A Case Study In Business, William Litzinger
Factors Affecting Graduation With Honors: A Case Study In Business, William Litzinger
Agricultural Economics and Agribusiness Undergraduate Honors Theses
Many first-year college students elect to enroll in their university’s honors program. These programs offer students many educational benefits not provided to non-honors students, such as smaller class sizes, priority registration, and added faculty interaction. However, of the students that enter the university as an honors student, many fail to complete their honors program. Researchers have documented completion rates as low as 18.45% (Campbell and Fuqua, 2008). So why are honors graduation rates so low? In this study, variables were examined that the literature suggests affects honors graduation rates (High School GPA, ACT/SAT scores, AP credits, GPA 1st term …
Are Some Analysts Superior At Forecasting World Grain Supplies?, Emmie M. Noyes
Are Some Analysts Superior At Forecasting World Grain Supplies?, Emmie M. Noyes
Agricultural Economics and Agribusiness Undergraduate Honors Theses
Whether agriculture is how you make your living or simply a means of putting food on your table, the prices of agricultural commodities and products affect us all. When buying and selling agricultural commodities, both farmers and firms use futures markets. Futures markets help minimize price risk, which is important to both sides of the transaction.
Recently, private analysis firms have started to forecast the information contained in the USDA’s WASDE report. This is relevant because future prices react to new information contained in WASDE reports. These firms will release their information a few days before the WASDE comes out …
Teaching For Career Success: An Agricultural Industry Perspective Of Preparedness Needs For Diverse Workforce Development, Madelaine Giebler
Teaching For Career Success: An Agricultural Industry Perspective Of Preparedness Needs For Diverse Workforce Development, Madelaine Giebler
Graduate Theses and Dissertations
This research examined agricultural graduate preparedness needs through the lens of agricultural industry professionals. In the rapidly changing industry environment, continual review of agricultural curriculum needs provides relevant curriculum recommendations for academic programs. This study came at a time when agricultural curriculum was in need of review. Methodology for this study involved a qualitative mixed methods approach employing survey and interview responses. A total of 121 industry professionals, identified through the University of Arkansas Bumpers College Career Development Center, were contacted with the survey link. A total of eighteen individuals completed the surveys, and of those eighteen survey respondents, eight …
Bumpers College Of Agricultural, Food And Life Sciences Professional Development Opportunities And Their Impact On Perceptions Of Career Preparedness, Jessica L. Wesson
Bumpers College Of Agricultural, Food And Life Sciences Professional Development Opportunities And Their Impact On Perceptions Of Career Preparedness, Jessica L. Wesson
Graduate Theses and Dissertations
A student’s undergraduate education is an imperative part of developing career skills that will prepare them to transition from academia to the professional world. Experience outside of the classroom and course material taught in a formal class experience are both important. Their experiences and classes, in college, allow them to develop skills and increase their chances of being successful in the workplace (Suvedi et al., 2016).
Chickering’s Seven Vectors of Student Development were used to help explain the process of student development. A quantitative survey was sent to DBCALFS faculty, staff, and administrators, and a different quantitative survey was sent …
Teaching Programmable Microcontrollers To Novice Users In A College Of Agriculture: Effects On Attitude, Self-Efficacy, And Knowledge, Grant T. Hood
Teaching Programmable Microcontrollers To Novice Users In A College Of Agriculture: Effects On Attitude, Self-Efficacy, And Knowledge, Grant T. Hood
Graduate Theses and Dissertations
This thesis consists of two articles that examined an instructional treatment based on the use of Arduino UNO R3 programmable microcontrollers in a fundamentals of agriculture systems technology course at the University of Arkansas. The first article examined students’ breadboarding and programming self-efficacy and knowledge of Arduino. The treatment consisted of a three-class-period instructional treatment, starting with a pretest before instruction to measure students’ baseline interest, knowledge, and self-efficacy of breadboarding and programming Arduino. This was followed with a short 30-minute instructional video explaining basic Arduino programming and breadboarding. Next a hands-on laboratory activity requiring students to breadboard and program …
A Mixed Methods Approach To Context Specific Curriculum Design For Very Small And Small Strawberry Growers In The Southeastern United States, Thomas A. Yeargin
A Mixed Methods Approach To Context Specific Curriculum Design For Very Small And Small Strawberry Growers In The Southeastern United States, Thomas A. Yeargin
Graduate Theses and Dissertations
Outbreaks of foodborne illness due to fresh produce are a continued threat to both the publichealth and the economy in the United States. Though there are many factors which influence the perpetuation of foodborne pathogens, the inability of the food industry to curtail this issue indicates systemic failure of interventions aimed at improving food safety practices. In this dissertation, we detail the efforts made over the past few decades to provide training to food producers and food handlers as well as recommendations that have been made for improvement based on these studies. By borrowing from more advanced fields of study …
Consumer Preferences For Lab Grown Meat: The Effect Of Information On Consumer Choice, Aryn Blumenberg
Consumer Preferences For Lab Grown Meat: The Effect Of Information On Consumer Choice, Aryn Blumenberg
Food Science Undergraduate Honors Theses
Global population growth and increased meat demand present challenges for the agricultural industry to produce meat sustainably. In-vitro meat (IVM) is an alternative that could reduce negative impacts associated with livestock production. The goal of this study was to examine consumers’ preferences for IVM. A choice experiment was created with twelve choice tasks that varied across five attributes: production method (IVM or conventional), carbon trust label, organic label, animal welfare label, and price. 1,120 US consumers were randomly assigned to one of four information treatments, differing by information presented regarding IVM: 1) neutral (baseline), 2) positive, 3) negative, and 4) …
Economic Viability Of Weed Management Strategies In High-Tunnel Tomato, Gracie Morrison
Economic Viability Of Weed Management Strategies In High-Tunnel Tomato, Gracie Morrison
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
Cost-effective weed suppression is an important consideration for tomato growers. Growers often choose methods which minimize hand labor, as hand weeding can be prohibitively expensive. This project determined economic viability of high tunnel tomatoes treated with several methods of weed control, both organic and chemical. These methods included: 2-week hand weeding, 1-week hand weeding, preemergent, straw, landscape fabric, and untreated weedy control plots. These treatments were applied to randomized blocks in a high-tunnel. Weeding, planting, and harvest were all timed to determine labor and material costs of weed management strategy implementation. After harvest, marketable yield was weighed to determine revenue. …
Quantifying The Relationship Between Pond Size And Water Quality, Rebekah Mason
Quantifying The Relationship Between Pond Size And Water Quality, Rebekah Mason
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
The water quality of ponds, streams, and groundwater is at risk due to agricultural and urban development. Implementation of ponds near developmental areas can act as catchment sites to reduce further water pollution (Bichsel et al., 2015). However, maintenance of pond water quality is necessary for continued water supply to livestock and general recreational use. The present study aimed to determine the relationship between pond size (surface area range from 142 to 5336 m2) and water quality. Analysis of water quality parameters, including dissolved oxygen, nitrate, phosphate, and chlorophyll-a, were conducted during the summer of 2021 and winter …
Student Perceptions Of Agriculture Messages Delivered Using Creative Media, Faith Mills
Student Perceptions Of Agriculture Messages Delivered Using Creative Media, Faith Mills
Agricultural Education, Communications and Technology Undergraduate Honors Theses
The purpose of this study was determine how communicating authentical agricultural information using an infographic affect millennial and generation z students’ perceptions on the agriculture industry and to determine the perceptions of college students regarding the infographic used to convey agricultural messages. This study used a qualitative and quantitative approach in a questionnaire format through Qualtrics. The questionnaire was designed with five sections including a pre-questionnaire, content presentation, post-questionnaire, infographic perception questionnaire, and demographics section. All questions in the pre- and post- questionnaire were focused on the subjects found in the infographic presented in the content presentation. Overall, participants had …
The Work Of La Via Campesina Regarding The Intersection Of Land Occupation And Food Sovereignty, Josephine Drydale
The Work Of La Via Campesina Regarding The Intersection Of Land Occupation And Food Sovereignty, Josephine Drydale
International and Global Studies Undergraduate Honors Theses
La Via Campesina (LVC), a global movement that supports small and local farmers and their communities, is one of the world’s largest food and agricultural rights movements and advocates for agricultural rights in terms of land, ecology, human rights, and more. LVC is known for its establishment of food sovereignty, defined as the right to control one’s production and consumption of food. This new concept placed them on the map, accompanied by their aggressive editorial and advocacy work against ideals they view as neoliberal and food policies that benefit large food moguls while disenfranchising the small farmer. The concept of …
The Last Leg: A Social Sustainability Assessment Of Ovine Agriculture, Sydney Golding
The Last Leg: A Social Sustainability Assessment Of Ovine Agriculture, Sydney Golding
International and Global Studies Undergraduate Honors Theses
Post-war agricultural transformations and the rise of Sustainability discourses have dictated the trajectory of sector industries. The implications of agriculture in lateral policy schemes have neglected the careful consideration of the social health of farmers in decision-making processes, creating a greater divide between the interests of the state and our once revered providers. This study aims to capture the complexity of social matters in agriculture within the specific context of sheep farming in the United Kingdom and the United States and how the concurrent systems have adapted considering the impacts of relevant contemporary historical contexts. The principles of Janker, Mann, …
Assessing The Impact Of Parental Involvement On The Scaling Of Agricultural Technologies From School Garden To Home Farm Through Experiential Learning, Gracie Pekarcik
Assessing The Impact Of Parental Involvement On The Scaling Of Agricultural Technologies From School Garden To Home Farm Through Experiential Learning, Gracie Pekarcik
Masters Theses
Cambodia is a predominantly rural nation with a heavy dependence on agriculture, particularly smallholder rice farming systems. While several sustainable agricultural technologies have been successfully piloted on research stations or with small numbers of early adopters, questions remain on how to extend these technologies to large numbers of resource-poor smallholders. The Scaling Suitable Sustainable Technologies Project (S3-Cambodia) seeks to examine pathways for scaling sustainable intensification (SI) technologies to smallholder farmers. One of the identified pathways to scaling SI is through the education system. Cambodian youth serve as an entry point to extend target technologies to farm families through experiential learning …
Assessing Global Meat Trade & Local Infrastructure Upgrades, Mary Lynn Marks
Assessing Global Meat Trade & Local Infrastructure Upgrades, Mary Lynn Marks
Masters Theses
This thesis is a combination of two distinct chapters. Chapter 1 focuses on human pandemics impacts on global meat trade. An increase in future mass global pandemics is expected as zoonotic diseases, globalization, and trade escalate. These pandemics affect nearly every industrial sector, with animal protein no exception. The COVID-19 pandemic continues to be the largest, most expansive, and unprecedented pandemic in a century. Labor shortages and supply chain defragmentation are only a portion the production process affected. Studies have analyzed species specific disease events’ effects on animal trade, such as those caused by the African Swine Fever amongst Chinese …
A Disaggregated Analysis Of Beef Import Demand In Japan, Christina D. Greer
A Disaggregated Analysis Of Beef Import Demand In Japan, Christina D. Greer
Masters Theses
Japan is an important partner for the U.S. beef industry and a major beef importing country. In 2020, Japan was the world’s third-largest importer of beef products (USDA, 2021). Although the Japanese beef market has been studied, research on the importance of product characteristics in determining import demand has been limited. The goal of this research is to provide a detailed analysis of how U.S. beef products compete in the Japanese market relative to other exporting countries based on prices, product form (chilled versus frozen), and product characteristics (boneless versus bone-in).
This study will focus on three key factors affecting …
Evaluation Of Triple Negative Breast Cancer Tumor Matrix, Alejandra Ham
Evaluation Of Triple Negative Breast Cancer Tumor Matrix, Alejandra Ham
Honors Theses
No abstract provided.
Cucurbit Downy Mildew Of Melon: Pathogen Diversity And Host Resistance, Sean Toporek
Cucurbit Downy Mildew Of Melon: Pathogen Diversity And Host Resistance, Sean Toporek
All Dissertations
Cucurbit downy mildew (CDM), caused by Pseudoperonospora cubensis, is a major constraint on melon (Cucumis melo) production in the eastern United States, but P. cubensis populations infecting C. melo are not well characterized. Between 2019 and 2021, 248 P. cubensis isolates were collected from cultivars Halona and Hale’s Best Jumbo in ten states. Isolates were genotyped with nine microsatellites, and mating type and clade were determined. All isolates displayed an inverse mating type / clade relationship: 90.3% and 9.7% of the isolates were mating type A1 / Clade 2 and mating type A2 / Clade 1, respectively. …
An Investigation Of Factors Affecting The Rooting Ability Of Hardwood Muscadine Cuttings And Genetic Diversity Of Wild And Cultivated Muscadine Grapes (Vitis Rotundifolia Michx.), Kenneth Buck
Graduate Theses and Dissertations
The muscadine (Vitis rotundifolia syn. Muscadinia rotundifolia) is a grape species native to the southeastern United States. Muscadines are one of three grape species in subgenus Muscadinia with a chromosome number of 2n=40 (V. rotundifolia, V. munsoniana, and V. popenoei), making them genetically distinct from the European wine and table grape (Vitis vinifera) and other species in subgenus Euvitis. Rooting hardwood cuttings from muscadine vines has traditionally been considered an exceptionally difficult task. Many previous studies observed almost no root formation, leading to a general consensus that muscadines should either be propagated by softwood cuttings or vegetative layering. However, the …
Rural Students On College Enrollment: Perceptions Of Influence Surrounding College Choice, Lucas M. Simmons
Rural Students On College Enrollment: Perceptions Of Influence Surrounding College Choice, Lucas M. Simmons
Graduate Theses and Dissertations
The purpose for conducting the study was to describe the community, personal experiences, and life events of individuals from rural Arkansas communities in developing their decisions to attend college and how the community impacted their successful enrollment at the University of Arkansas. Specifically, the study set out to explore how rural communities were perceived to influence college enrollment decisions and choices in degree selection. Although situated at one case study institution, the University of Arkansas, the findings have importance for all rural students and communities, and ultimately public policy and institutional behaviors. Therefore, the purpose for conducting the study was …
Pasture Biomass Estimation Using Crop Surface Modeling And Vegetation Indices, Brendan Macinnis
Pasture Biomass Estimation Using Crop Surface Modeling And Vegetation Indices, Brendan Macinnis
All Theses
Biomass estimations are a critical function of any grazing or haylage system. Determination of ideal harvesting or grazing times help optimize the quality and quantity of above-ground biomass (AGB). The objective of this study was to evaluate the use of unmanned aerial vehicles (UAVs) for Alfalfa and Tall Fescue biomass estimations. Using a DJI Mavic Pro, RGB and NDVI images were taken and used to create orthomosaic images. Structure-from-motion (SfM) techniques were used to developed digital elevation models to evaluate the change in canopy height (∆H) between pre- and post-harvests. Change in canopy height (∆H) was shown to provide the …
Unraveling The Genetic Architecture Of Somatic Embryogenesis In Upland Cotton, Adam M. Canal
Unraveling The Genetic Architecture Of Somatic Embryogenesis In Upland Cotton, Adam M. Canal
All Theses
Somatic embryogenesis is the de novo development of asexual embryos because of the plasticity of the plant cell. In tissue culture, the biochemical and genetic mechanisms of dedifferentiated callus tissues can be reprogrammed to transdifferentiate into developed, polarized embryos, which can ultimately regenerate into whole plants. Although this rarely occurs in nature, scientists have exploited this process for decades to regenerate whole plants following gene transformation or for micropropagation. While some species are amenable to in vitro regeneration, upland cotton is particularly recalcitrant, with regenerative potential being confined to only several genotypes. The lack of elite, regenerable genotypes greatly restricts …