Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

PDF

Theses/Dissertations

Horticulture

Discipline
Institution
Publication Year
Publication

Articles 1 - 30 of 193

Full-Text Articles in Life Sciences

Horticulture Program Curriculum Development Project For The Michigan Department Of Corrections, Brad Dean Jan 2019

Horticulture Program Curriculum Development Project For The Michigan Department Of Corrections, Brad Dean

Creative Components

Different forms of education have been a part of prison education systems for many years. Career and Technical Education programs have been utilized by many states and the federal correctional departments in educating prisoners for decades. Providing inmates with CTE programs has long been used to lower recidivism. A new curriculum was introduced to the Horticulture trades programs within the Michigan Department of Corrections beginning in March of 2018. This new curriculum was structured around the Michigan Nursery and Landscape Association’s Certified Green Industry Professional curriculum and the Michigan Department of Agriculture and Rural Development Certified Pesticide Applicator license ...


Efficacy Of Antimicrobial Mitigation On Escherichia Coli Cfu And Growth And Development Of Hydroponic Leafy Greens, Nathan J. Eylands Dec 2018

Efficacy Of Antimicrobial Mitigation On Escherichia Coli Cfu And Growth And Development Of Hydroponic Leafy Greens, Nathan J. Eylands

Theses and Dissertations

The Food and Drug Administration (FDA) have set new standards that apply to agriculturalists producing crops eaten fresh and/or raw by consumers. This new produce safety rule, known as the Food Safety Modernization Act (FSMA), has established science-based standards for all areas of production in agriculture with regards to microbial contamination. Escherichia coli (E. coli) O157:H7 is a particular bacterium of concern under FSMA guidelines. Grower compliance is mandatory and therefore vital to the continuation of any farm. Greenhouse hydroponic growers have shown advantages in efficiency when compared to conventional farming methodology. Those, however, with recirculating hydroponic systems ...


Barriers To Local Food Producers In Arkansas, Courtney Cooper, Zola Moon May 2018

Barriers To Local Food Producers In Arkansas, Courtney Cooper, Zola Moon

Horticulture Undergraduate Honors Theses

The purpose of this study is to identify and describe the barriers that prevent local food producers from selling their food in a mainstream market. This study utilized both qualitative and quantitative analysis through a mixed-methods survey. Information collected through the study had a two-fold focus: barriers that producers face (or that they are providing assistance for) and what are consumers looking for in products that these producers are supplying. The major barriers found for local food producers in Arkansas were lack of capital and obtaining infrastructure for packaging, processing, and storing products. Qualitative analysis of textual interviews was done ...


The Horticultural Potential Of Wastewater-Grown Algae Fertilizers, J Austin Gimondo Jan 2018

The Horticultural Potential Of Wastewater-Grown Algae Fertilizers, J Austin Gimondo

Graduate Theses and Dissertations

This thesis comprises five chapters and details the evaluation of wastewater-grown-algae-based materials as plant fertilizers in container-crop production. Chapter one provides context for the thesis followed by a detailed review of literature relevant to bio-based fertilization and the use of algae to treat wastewater. Chapters two through four are manuscripts intended for submission to HortScience. Chapter two details the production of three container-grown crops with pellets or pastes of wastewater-grown algae as a fertilizer source. Evaluation of extruded algae-and-bioplastic materials as fertilizers for three container-crops and for turfgrass are reported in chapters three and four, respectively. The final chapter synthesizes ...


The Growing Together Project: Understanding Impacts On Field Day Attendees And Iowa Master Gardeners, Laura Irish Jan 2018

The Growing Together Project: Understanding Impacts On Field Day Attendees And Iowa Master Gardeners, Laura Irish

Graduate Theses and Dissertations

Citizen science has been shown to be an effective tool for increasing data collection, as well as a great benefit to those who participate in the research project. The rising costs and limited funding for conducting large-scale research projects make citizen science projects valuable assets for researchers. Understanding the impact of citizen science projects on the volunteers must be done to better engage with and retain the volunteers. The Growing Together project, a partnership between the ISU Extension and Outreach Master Gardener program and the Human Sciences Extension, was created to increase food security in Iowa. The two major components ...


Better Health Through Horticulture: Using Horticulture To Influence Behavior And Reduce Stress, Rachel Ochylski Nov 2017

Better Health Through Horticulture: Using Horticulture To Influence Behavior And Reduce Stress, Rachel Ochylski

All NMU Master's Theses

Horticultural intervention in the form of gardening workshops connect participants to nature while they nurture another living organism. Horticultural intervention provides opportunities to socialize and engage in a meaningful activity, which have been recognized as helpful in the treatment of common mental health difficulties such as depression and anxiety. There is a lack of experimental studies based on quantitative data that focus on the effects of horticulture on holistic human health. The author evaluated the effects of a horticultural intervention on two separate groups, older adults and college students. The behavioral effects of engaging in gardening activities were evaluated using ...


Optimization Of Overhead Irrigation In Relation To Irrigation Water Use Efficiency In The Louisiana Nursery Industry, Mark A. Wilson Oct 2017

Optimization Of Overhead Irrigation In Relation To Irrigation Water Use Efficiency In The Louisiana Nursery Industry, Mark A. Wilson

LSU Master's Theses

Irrigation efficiency is an essential component of nursery production in the United States. To increase productivity of Louisiana growers, a series of studies were conducted to evaluate current nursery water practices. The objectives were to determine current irrigation practices; evaluate actual water usage; and compare nursery media for water utilization. A mailed survey determined that the majority of growers used can yard production (63%), overhead irrigation (79%), had no irrigation manager (82%) and did not collect/reuse water(61%); 50% do not test/calibrate their irrigation system. Based on this information, five nurseries using overhead irrigation were selected to determine ...


Genetic Determinism Of Xanthomonas Arboricola Pv. Pruni (Xap) Resistance, Fruit Quality, And Phenological Traits In Peach And Incorporation Of Marker-Assisted Selection (Mas) In The University Of Arkansas Peach And Nectarine Breeding Program, Terrence James Frett May 2016

Genetic Determinism Of Xanthomonas Arboricola Pv. Pruni (Xap) Resistance, Fruit Quality, And Phenological Traits In Peach And Incorporation Of Marker-Assisted Selection (Mas) In The University Of Arkansas Peach And Nectarine Breeding Program, Terrence James Frett

Theses and Dissertations

For over two decades the incorporation of marker-assisted selection (MAS) has been discussed as an innovative approach to increase peach breeding efficiency. Although hundreds of quantitative trait loci (QTLs) have been identified, only a few have been converted into usable MAS tools. This highlights a disconnect between genomic discoveries and practical application in breeding programs, which has delayed use of MAS.

In this dissertation, three sequential steps were performed with the objective to bridge this gap and develop breeding-relevant DNA tests for MAS of fruit bacterial spot resistance (Xap1 and Xap6), fruit quality [blush (Rf), acidity (D), and acidity and ...


Organic No-Till And Strip-Till Systems For Broccoli And Pepper Production, Dana Lipinski Jokela Jan 2016

Organic No-Till And Strip-Till Systems For Broccoli And Pepper Production, Dana Lipinski Jokela

Graduate Theses and Dissertations

Organic farmers rely extensively on tillage to incorporate plant residues, prepare seedbeds, and control weeds. However, tillage may have adverse effects on soil health, and conventional no-till production methods, which rely on herbicide for weed control, are not compatible with organic farming, so research was conducted on organic no-tillage (NT) and strip-tillage (ST), which rely on terminating a cover crop with a roller-crimper. Field research was carried out over two years (2013–14 and 2014–15) to compare two organic, cover crop-based reduced tillage systems (NT and ST) with conventional tillage (CT) in the production of organic bell pepper and ...


Horticultural Potential Of Nyssa Biflora Walt. (Swamp Tupelo), Frank D. Balestri Jan 2015

Horticultural Potential Of Nyssa Biflora Walt. (Swamp Tupelo), Frank D. Balestri

Graduate Theses and Dissertations

Nyssa biflora Walt. (swamp tupelo) and Nyssa sylvatica Marsh. (black gum) are closely related species of trees native to North America. Although N. sylvatica is prevalent in the nursery trade, little is known about the horticultural potential of N. biflora. Because many authors referred to N. biflora as a variant of N. sylvatica, taxonomic confusion may have resulted in the overlooking of N. biflora for use as a horticultural plant. The overarching objectives of my research were to establish seed-propagation protocols for N. biflora and to characterize the responses of seedlings of N. biflora to water stress. We included N ...


Evaluation Of Creeping Bentgrass (Agrostis Stolonifera L.) Responses To An Amino Acid Containing Co-Product, Isaac Mertz Jan 2015

Evaluation Of Creeping Bentgrass (Agrostis Stolonifera L.) Responses To An Amino Acid Containing Co-Product, Isaac Mertz

Graduate Theses and Dissertations

Tryptophan, an essential amino acid that acts as a building block in protein synthesis, is a biochemical precursor for serotonin, niacin, and auxin in most organisms. When soil moisture is limited, applying biosolids boosted with auxin from tryptophan may increase root production and endogenous hormone levels that can result in plant growth regulation. Tryptophan is produced industrially, which results in a significant amount of byproducts. Tryptophan byproduct (TRP-B) is considered a waste product, but its amino acid and nutrient content make it a possible growth promoter for turfgrasses. The objective of this research was to determine whether applications of TRP-B ...


Integration Of Summer And Fall Cover Crops In Vegetable Cropping Systems, Raymond Albert Kruse Jan 2015

Integration Of Summer And Fall Cover Crops In Vegetable Cropping Systems, Raymond Albert Kruse

Graduate Theses and Dissertations

The demand for locally produced vegetables is growing in the Midwest, including Iowa. However, since vegetables are a small fraction of total cropland in the state, little research exists on approaches and techniques to increase the sustainability of vegetable production systems. Including cover crops in vegetable crop rotations can contribute to sustainability in vegetable cropping systems. This research investigated the integration of summer and fall cover crops in vegetable cropping systems to reduce weeds and nutrient leaching, improve soil chemical and biological properties, and enhance crop growth, yield, and produce quality. Cover crops studied in this research included buckwheat (Fagopyrum ...


Quantifying The Effects Of Hydroponic Systems, Nutrient Solution, And Air Temperature On Growth And Development Of Basil (Ocimum L.) Species, Kellie Jean Walters Jan 2015

Quantifying The Effects Of Hydroponic Systems, Nutrient Solution, And Air Temperature On Growth And Development Of Basil (Ocimum L.) Species, Kellie Jean Walters

Graduate Theses and Dissertations

Basil (Ocimum sp.) is the most popular fresh culinary herb. An increased demand for locally grown food is causing greenhouse producers to expand production of hydroponically grown culinary herbs. Greenhouse basil producers often manipulate production parameters however, there is a lack of data characterizing the effect of parameters such as hydroponic production system, cultivar, daily light integral (DLI), nutrient solution concentration, and plant density on growth and development of hydroponically produced basil. Furthermore, the effect of temperature on basil production is not well modeled. Our objectives were to quantify productivity and characterize growth and development of basil cultivars grown in ...


Motivation And Retention Of Iowa’S Master Gardener Volunteers, Bryn Takle Jan 2015

Motivation And Retention Of Iowa’S Master Gardener Volunteers, Bryn Takle

Graduate Theses and Dissertations

Retention of participants in volunteer organizations has been shown to be not only a challenge, but also a great benefit to the organization. Rising costs of training and continuing education make each interaction valuable from both perspectives. Volunteer opportunities are abundant but must be meaningful and engaging for the participants in order to keep them involved. Using electronic survey software, Iowa Master Gardeners were asked to respond to a series of questions investigating 1) the current demographics of the population, 2) reasons volunteers associate with the Master Gardener program, and 3) the continuing education topics and delivery methods most preferred ...


Limited Irradiance, Artificial Fluorescent Irradiance, And Nitrate-N:Ammonium-N Impact On Biomass And Essential Oil Production Of Ocimum Basilicum L., Tara Marie Springer Jan 2015

Limited Irradiance, Artificial Fluorescent Irradiance, And Nitrate-N:Ammonium-N Impact On Biomass And Essential Oil Production Of Ocimum Basilicum L., Tara Marie Springer

Graduate Theses and Dissertations

In the United States, there is an increasing trend in consumer participation in herb gardening. One of the more popular herbs available, basil (Ocimum basilicum L.) is a culinary herb with a wide variety of uses and cultivars. With an increased need to support the growing demand for herbs, it is important to understand how various growing practices impact basil production. In particular, this research investigates several aspects of growing basil, including how limited irradiance, artificial fluorescent irradiance, and nitrate-N:ammonium-N fertilizer influences growth and essential oil production.

In our limited irradiance study, ‘Genovese’ basil plants were grown in a ...


Horticultural Evaluation Of Soy-Based Bioplastics For Container-Crop Production, Kenneth Gene Mccabe Jan 2015

Horticultural Evaluation Of Soy-Based Bioplastics For Container-Crop Production, Kenneth Gene Mccabe

Graduate Theses and Dissertations

Petroleum-based plastics and synthetic fertilizers are commonplace in container-crop production, and their use raises concerns about the sustainability of plants produced in containers. Bioplastic materials have been developed as replacements that are more sustainable, but their use has been limited to date. Using materials made from composites of soy-based [Glycine max (L.) Merr.] ingredients and commercially-available bioplastics, we fabricated containers and pelletized fertilizers to understand nutrient-release characteristics of soy-based bioplastic composites while producing plants in container-crop production. My first objective was to evaluate the growth and mineral nutritional status of a common greenhouse species [marigold (Tagetes patula L.)] grown in ...


Strip Tillage And Rowcovers As A Potential Alternative To Black Plastic Mulch In Cucurbit Production, Jennifer Louise Tillman Jan 2015

Strip Tillage And Rowcovers As A Potential Alternative To Black Plastic Mulch In Cucurbit Production, Jennifer Louise Tillman

Graduate Theses and Dissertations

The use of tillage and plastic mulch are common practices among cucurbit growers to provide warm, moist, weed-free soil around plants. However, there are environmental drawbacks to the use of plastic mulches, such as the material waste given that these products are used for a single season, and the reduced soil health and stability that can come from frequent and intensive tillage. As an alternative strategy, a biological mulch can be formed by rolling and killing a cover crop stand by using a roller crimper. Narrow, tilled strips can be formed within this mulch for the crop to grow in ...


Do Plants Play A Part In Student Satisfaction?, Amanda Diane Plante May 2014

Do Plants Play A Part In Student Satisfaction?, Amanda Diane Plante

Masters Theses

Environmental psychologists have found relationships between plants, nature and satisfaction. Student satisfaction is important across grade levels. Two studies were conducted to determine the effect of spending time with live plants on student satisfaction and academic performance. In the first study, a quasi-experimental nonequivalent control group design was used to determine how participation in garden labs would affect high school student satisfaction with school and academic performance. Ecology students in the variable group participated in ten gardening labs during the semester. During labs, students did hands-on gardening activities in the school greenhouse and garden. Students in the variable and control ...


Evaluating Horticultural Practices For Sustainable Tomato Production In Kamuli, Uganda, Sharon Mbabazi Tusiime Jan 2014

Evaluating Horticultural Practices For Sustainable Tomato Production In Kamuli, Uganda, Sharon Mbabazi Tusiime

Graduate Theses and Dissertations

Tomatoes are a source of income and food security for small-landholder farmers across Uganda, including the Kamuli District. Studies regarding sustainable practices are needed to increase production of the crop and improve farmers' livelihoods. This study investigated three tomato cultivars, Heinz 1370, Nuru F1, and MT 56, pesticide application, staking, and mulching for their effect on yield, disease severity and gross margin of tomato production in the Kamuli District of Uganda. The treatments were tested in a randomized complete block design with a factorial and split-plot arrangement during two growing seasons in 2013. Total and marketable fruit number, marketable fruit ...


Values-Based Supply Chains: Local And Regional Food Systems In The Upper Midwest United States, Kevin Richard Duerfeldt Jan 2014

Values-Based Supply Chains: Local And Regional Food Systems In The Upper Midwest United States, Kevin Richard Duerfeldt

Graduate Theses and Dissertations

In recent years there has been growing public interest in sustainable food systems. One effect of growing interest is the proliferation of values-based supply chains or local food systems. The main limiting factor of local food systems is infrastructure for aggregation and access to supply chains. Food hubs have been identified as one solution. My purpose is to capture valuable data about the state of local foods industries in 2012 and inform organizations developing food hubs. To do this I surveyed characteristics of established food hubs and analyzed local Iowa vineyards and wineries, as a case study of an established ...


Humboldt County Agriculture Education: Forestry, Nursery, And Dairy Production, Alayna Renner Jun 2013

Humboldt County Agriculture Education: Forestry, Nursery, And Dairy Production, Alayna Renner

Agricultural Education and Communication

The purpose of this project was to create middle school agriculture curriculum for the top three agriculture commodities in Humboldt County. It was designed and created specifically for Humboldt County to educate the upcoming generations about the unique and diverse agriculture industry Humboldt County provides. It is hoped that this easy and ready to use curriculum will get the students interested and involved in the agriculture industry in the future years. It includes a teacher’s aide outline, student handouts, a Power Point, and an activity handout.


The Use Of Horticulture And Gardening As A Special Education Tool At The High School Level, Krysta Marie Johnson Jun 2010

The Use Of Horticulture And Gardening As A Special Education Tool At The High School Level, Krysta Marie Johnson

Horticulture and Crop Science

THIS REPORT CONTAINS PLANNING METHODS AND INSTALLATION PROCEDURE FOR A RAISED VEGETABLE GARDEN FOR WILSONVILLE HIGH SCHOOL, IN WILSONVILLE, OREGON. THE PRIMARY PURPOSE OF THE GARDEN WAS TO USE IT AS A LEARNING TOOL FOR THE SPECIAL EDUCATION DEPARTMENT AT WILSONVILLE HIGH SCHOOL. UPON DOING MORE RESEARCH IT BECAME EVIDENT THAT THE GARDEN CAN ALSO BE USED AS A HEALING TOOL FOR STUDENTS WHO SUFFER FROM ATTENTION DISORDERS AND WHO HAVE EMOTIONAL AND LEARNING DISABILITIES. THE STUDENTS HAVE BECOME INVESTED IN THE GARDEN PROJECT AND LOOK FORWARD TO DOING MORE PROJECTS WITH THEIR CLASS.


Evaluation Of Competition Between Turfgrass And Trees In The Landscape, Christopher A. Hendrickson Dec 2008

Evaluation Of Competition Between Turfgrass And Trees In The Landscape, Christopher A. Hendrickson

All Graduate Theses and Dissertations

Population growth in regions of the Intermountain West has resulted in rapid growth of residential neighborhoods. In Utah, the landscapes associated with these expanding neighborhoods consume vast quantities of treated water. This is a concern in all states of the Intermountain West, as water becomes increasingly scarce. Traditionally used turfgrasses, trees and other plants in Intermountain West landscapes require significant amounts of supplemental water considering the intense sunlight, dry winds and sparse rainfall typical of the region. Characterizing the interactions between turfgrass and tree species in these landscapes can aid in the identification of candidate species that consume less nutritional ...


Irradiance, Total Nitrogen, And Nitrate-N: Ammonium-N Ratio Requirements For Optimal Edible Biomass Production Of Basil, Angela Renee Beaman Jan 2008

Irradiance, Total Nitrogen, And Nitrate-N: Ammonium-N Ratio Requirements For Optimal Edible Biomass Production Of Basil, Angela Renee Beaman

Retrospective Theses and Dissertations

Our objective was to determine the optimal irradiance, total N concentration, and NO3--N:NH4+-N ratio for greatest edible biomass production of three cultivars of basil (Basilicum ocimum L.) in a controlled-environment production system. Preliminary experiments showed basil required a dark period, but the duration of the dark period was not resolved. Based on our results, canopy-level irradiance should not exceed 500 mumol/m2/s to conserve energy while enabling the greatest edible biomass production of basil in a controlled-environment production system. Optimal edible biomass production occurred at 100 to 250 mg N/L at a ratio of 50:50 ...


Soil Quality In Strawberry And Vineyard Agroecosystems Maintained Under Conventional And Alternative Weed Management Systems, Craig Alan Dilley Jan 2007

Soil Quality In Strawberry And Vineyard Agroecosystems Maintained Under Conventional And Alternative Weed Management Systems, Craig Alan Dilley

Retrospective Theses and Dissertations

Agricultural soil degradation continues to be problematic in the United States and in the world. In order to address the issue of soil conservation in the context of small fruit horticulture, conventional and alternative production practices need to be evaluated to assess their impact on soil.;The strawberry experiment compared the effects of four weed management systems on weed presence, soil quality properties, and strawberry yield, plant growth and development. Conventional treatments were conventional herbicide and pre-plant methyl bromide soil fumigation + conventional herbicide use. Alternative treatments included killed-cover crop mixture of hairy vetch ( Vicia villosa) and cereal rye (Secale cereale ...


Field Evaluation Of Winterkill In Annual Bluegrass (Poa Annua L.) And Creeping Bentgrass (Agrostis Stolonifera L.), Federico J. Valverde Jan 2007

Field Evaluation Of Winterkill In Annual Bluegrass (Poa Annua L.) And Creeping Bentgrass (Agrostis Stolonifera L.), Federico J. Valverde

Retrospective Theses and Dissertations

Winterkill, in putting greens and fairways of annual bluegrass ( Poa annua L.) and creeping bentgrass (Agrostis stolonifera L.), is a common phenomenon in North-Central Region of United States and in other temperate areas. Extensive research in controlled environments has evaluated injury mechanisms in creeping bentgrass and annual bluegrass. A large number of studies have evaluated winter injury in other turfgrass species and in cereal grasses. Most agree that damages can be explained by factors such as intracellular and extracellular ice formation, cellular dehydration and hydration, plant desiccation, macro scale tissue and organ rupture, diseases, anoxia, cellular acidosis, oxidative stress and ...


Field Evaluation Of Reduced-Growth, Glyphosate-Resistant Kentucky Bluegrass In Competitive And Noncompetitive Settings, Christopher James Blume Jan 2007

Field Evaluation Of Reduced-Growth, Glyphosate-Resistant Kentucky Bluegrass In Competitive And Noncompetitive Settings, Christopher James Blume

Retrospective Theses and Dissertations

Reduced-growth, glyphosate-resistant Kentucky bluegrass (Poa pratensis L.) has recently been developed. There has been no comparative analysis of the newly developed transgenic Kentucky bluegrass lines to reference cultivars or tissue culture control lines to determine vegetative and flower characteristic differences and similarities. This study measured the vegetative and reproductive characteristics of the transgenic lines, tissue culture control lines, and reference cultivars during 2004 and 2005, in Ames, IA. The study was conducted in a noncompetitive, nonmown, spaced plant setting. Data collection of vegetative characteristics included rhizome proliferation and total plant area. Data collection for flower characteristics included flower phenology, reproductive ...


Summer-Induced Iron Chlorosis On Kentucky Bluegrass Turf, David Michael Devetter Jan 2007

Summer-Induced Iron Chlorosis On Kentucky Bluegrass Turf, David Michael Devetter

Retrospective Theses and Dissertations

Summer-induced chlorosis is the yellowing of turf from late July into September in the northern hemisphere. It was unknown why this chlorosis occurs. Research was conducted to determine how to treat and prevent summer-induced chlorosis and also how to induce it. A preliminary study showed that chelated iron applied when symptoms are present, could alleviate the problem. Further work showed that 0.75 kg Fe/ha was the most effective rate. Attempts to reduce chlorosis by applying iron before symptoms developed were unsuccessful. Attempts to generate the symptoms in the greenhouse were unsuccessful at soil temperatures of 29.4 C ...


Enhancement Of Plant Performance And Biochemical Constituents In Field And Hairy Root Production Of Echinacea , Fredy Rolando Romero Orellana Jan 2006

Enhancement Of Plant Performance And Biochemical Constituents In Field And Hairy Root Production Of Echinacea , Fredy Rolando Romero Orellana

Retrospective Theses and Dissertations

Echinacea is a commercially important source of natural products and phytopharmaceuticals. Echinacea products currently constitute a significant portion of the rapidly growing, multi-billion dollar natural products market. This popularity has led to the expansion of commercial cultivation of Echinacea and the need to find alternative methods to meet the increasing demands of the phytopharmaceutical market. Two methods of producing biochemical constituents in commercial use include extraction from field-grown plants and in vitro hairy root production;Echinacea seeds in the wild typically show a high degree of dormancy. In order to enhance Echinacea seed germination for field production, alternative methods to ...


Ecophysiology And Population Genetics Of Frangula Caroliniana (Walt) Gray (Rhamnaceae) , J. Ryan Stewart Jan 2005

Ecophysiology And Population Genetics Of Frangula Caroliniana (Walt) Gray (Rhamnaceae) , J. Ryan Stewart

Retrospective Theses and Dissertations

Frangula caroliniana (Walt.) Gray (or Rhamnus caroliniana Walt.) (Carolina buckthorn) is a woody species distributed throughout the southeastern United States. Due to its ornamental characteristics and the various soil conditions in which it grows, there is interest in promoting the species as a nursery crop within and beyond its native range. Concerns about the invasive potential of F. caroliniana need to be alleviated before it is promoted in horticultural commerce. These concerns are based on the aggressive spread of related species introduced to North America, including Rhamnus cathartica L. (common buckthorn). Thus, I sought to assess the landscape fitness of ...