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Agronomy and Horticulture, Department of

Department of agronomy and horticulture: dissertations, theses, and student research.

Unraveling the Tapestry of Indigenous Maize in North America: A Case Study of Pawnee Ancestral Maize , Kahheetah Barnoskie

Optimizing Crop Productivity and Fertility Practices in Intermediate Wheatgrass , Roberta Bianchin Rebesquini

Evaluating Drill Interseeded Cover Crop Establishment and Nitrogen Impact in Irrigated Corn , Victor de Sousa Ferreira

Impact of Nitrogen Availability on the Accumulation of Vegetative Lipids in Sorghum , Leticia Felicio Pasqualino

Method Developments to Identify Loci and Selection Patterns Associated with Genotype by Environment Interactions in Soybean , Mary M. Happ

Genomic Selection for Yield and Seed Composition Stability in an Applied Soybean Breeding Program , Benjamin Harms

Plasticity of Sorghum Biomass and Inflorescence Traits in Response to Nitrogen Application , Kyle M. Linders

High Throughput Phenotyping: Field Based Triticale Breeding and Educational Resource Impact , Catherine Kay Mick

Vulnerabilities of Greater Prairie Chicken and Tier 1 At-risk Species in Nebraska Caused by Grassland Transition to Woody Dominance , Robert Peterson

Experimentation on Nebraska Farms for Sustaining Soil Health Management , Fernanda Souza Krupek

Evaluating Planting Green and Herbicides for Integrated Weed Management and Their Effect on Soil Properties in Corn and Soybean in Nebraska , Trey Stephens

Evaluation of Vegetative Indices to Determine Canopy Ground Cover for Winter Survival and Hybrid Necrosis in Winter Wheat , Micheal Young

Characterization and Selection of Hop Cultivars Adapted to Nebraska , Kristina Alas

Water Quality, Carrier Volume and Droplet Size Effects on Herbicide Efficacy and Drift Potential , Barbara Houston

Optimization of Nozzle, Application Height, and Speed for UASS Pesticide Applications , Trenton Houston

Deciphering the Genetic Architecture of Key Female Floral Traits for Hybrid Wheat Seed Production , Juan Jimenez

Evaluating Traits Influencing Hybrid Wheat Seed Production Using a Double Haploid Population Derived from Freeman x Camelot , Emre Karahan

RECOMBINATION HOTSPOTS IN SOYBEAN [GLYCINE MAX (L.) MERR.] , Samantha J. McConaughy

MYCORRHIZAE IN MAIZE ( Zea mays L.) CROPPING SYSTEMS RESPOND DIFFERENTLY TO NITROGEN FERTILIZATION UNDER INCREASING CROP ROTATIONAL DIVERSITY , Morgan McPherson

Exploration of Genes Controlling Grain Yield Heterosis in Hybrid Wheat ( Triticum aestivum L.) Utilizing 3ʹ RNA Sequencing , Nichole Miller

Regional Plant Community Differences in the Nebraska Sandhills , Travis Millikan

Nitrification Inhibitor, Nitrogen Source, and Herbicide Effects on Soil Nitrogen Transformations and Corn Yield , William Neels

Addressing Challenges of Dryland Production of Sunflowers and Corn in the Semi-Arid High Plains of Nebraska , Zhan Orazov

Cattle Diet Selection During the Growing Season on Upland Sandhills Rangelands , Alejandro Orozco-Lopez

Winter Cover Crop Impacts on Weed Dynamics in Eastern and Central Nebraska , Elizabeth Ann Oys

CHARACTERIZATION OF SALT AND DROUGHT TOLERANCE IN SUNFLOWER (Helianthus annuus L.) , Sevgi Saylak

Dicamba tank mixtures and formulations and their effects on sensitive crops during cleanout procedures , Vinicius Velho

The Effect of Anionic Surfactants on Herbicide Mixtures and Solutions , Ely Anderson

Does Integrating Crops with Livestock Production Impact Soil Properties and Crop Production? , Lindsey Anderson

Effects of Micro-rates of 2,4-D and Dicamba on Lettuce and Pumpkin in Nebraska , Xinzheng Chen

Exploration of the Sludge Biodiesel Pathway , Zachary Christman

Techniques to improve the volume, texture and nutritional quality of gluten free bread , Zachary Christman

Using Thermal Imaging to Measure Water Stress in Creeping Bentgrass Putting Greens , Joe Foral Jr.

The influence of adjuvants on physical properties, droplet-size, and efficacy of glufosinate and dicamba plus glyphosate solutions , Estefania Gomiero Polli

Quantifying the Combined Effect of Abiotic Factors on the Decomposition of Organic Matter in Semiarid Grassland Soils , Elnazsadat Hosseiniaghdam

Livestock Grazing Impacts on Crop and Soil Responses for Two Cropping Systems , Alyssa Kuhn

American Burying Beetle, Plant Richness, and Soil Property Responses to Collapse of Juniperus virginiana Woodlands with Fire , Alison Ludwig

Evaluating Evapotranspiration and Management of Glyphosate-Resistant Palmer amaranth ( Amaranthus palmeri S. Watson) , Jasmine Mausbach

Management of Glyphosate-Resistant Palmer amaranth ( Amaranthus palmeri S. Watson) in Dicamba/Glyphosate-Resistant Soybean , Shawn McDonald

MAIZE NITROGEN MANAGEMENT USING REACTIVE SENSOR AND PROACTIVE MAIZE-N MODEL VIA FERTIGATION , Mohammed A. Naser

Formation of B Horizons in Engineered Putting Green Soils , Glen Obear

PRODUCTION, EVALUATION, AND SELECTION OF ELITE QUALITY PROTEIN POPCORN (QPP) HYBRIDS , Leandra Parsons

A Method for Visualizing Water Flow through Modified Root Zones , Dallas M. Williams

Phenotypic Plasticity of Diverse Sorghum Varieties in Response to Nitrogen Deficit Stress , Mackenzie Zwiener

Reaction of Tepary Beans to Eight Virulent Races of the Rust Pathogen that Overcomes All Known Common Bean Rust Resistance Genes , Santos Barrera Lemus, Prabin Tamang, Carlos A. Urrea, and Marcial A. Pastor-Corrales

Herbicide injury from dicamba and 2,4-D: How much is too much in lettuce? , Xinzheng Chen, Amit J. Jhala, Stevan Z. Knezevic, and Samuel E. Wortman

Evaluating Opportunities for Integrated Crop Livestock Systems in Eastern Nebraska , Elizabeth Kay Christenson

A Review of Technologies For Malt Flour and Sourdough From Brewery Spent Grain , Zachary Christman

Growing Torula Yeast (Candida utilis) For Food Grade Fatty Acids , Zachary Christman

Nutritional Strategies For Nurses In A Fast Paced Occupation , Zachary Christman

Wastewater Treatment Fatty Acids For Biodiesel Production , Zachary Christman

CRITICAL PERIOD OF PALMER AMARANTH REMOVAL AND EFFECTS OF LATE SEASON HERBICIDE APPLICATIONS ON PALMER AMARANTH SEED PRODUCTION , Jose de Sanctis

Fungicide Resistance: Surveillance, Risk Assessment and Evolution in Two Soil-Borne Pathogens , Nikita Gambhir

Weed Control Efficacy of Bio-Based Sprayable Mulch Films in Specialty Crop Systems , Eliott Gloeb

Influence of burning and grazing management practices on subirrigated Sandhill meadow hay production , Tara M. Harms

Spring Meadow Management Practices: What’s a Rancher to do? , Tara M. Harms, Jerry D. Volesky, and Mitchell B. Stephenson

Evaluating the Impact of Grafting on Local Tomato Production in Nebraska , Raihanah Hassim

Evaluating the Impact of Grafting on Local Tomato Production in Nebraska , Raihanah Hassim, Samuel E. Wortman, Ashley A. Thompson, and Stacy A. Adams

Soybean Response to Water: Trait Identification and Prediction , Shawn Jenkins

Reducing Mowing Requirements in Home Lawn and Golf Course Turfgrass , Mark A. Keck

IMPACT OF AGRICULTURAL LAND USE ON STREAM NITRATE, PHOSPHORUS, AND SEDIMENT CONCENTRATIONS AT THE WATERSHED AND FIELD SCALE , Brittany A. Kirsch

Extreme Fire as a Management Tool to Combat Regime Shifts in the Range of the Endangered American Burying Beetle , Alison K. Ludwig, Daniel R. Uden, and Dirac Twidwell

Buffalograss Diversity Assessment , Collin Marshall

Effects of Char on Nitrogen Management in Agricultural Soils of Semi-arid Western Nebraska , Dinesh Panday

Control of Volunteer Corn in Enlist Corn and Economics of Herbicide Programs for Weed Control in Conventional and Multiple Herbicide-Resistant Soybean Across Nebraska , Adam M. Striegel

Influence of Cover Crop Management Practices on Rainfed Corn Production in Semi-Arid Western Nebraska , Alexandre Tonon Rosa

Effects of Tank Contamination and Impact of Drift-Reducing Agents on Weed Control in Response to Dicamba Applications , Milos Zaric

Effect of Soil-Applied Protoporphyrinogen Oxidase Inhibitor Herbicides on Soybean Seedling Disease , Nicholas J. Arneson

Challenges and Opportunities for Weed Control in Nebraska Popcorn , Ethann R. Barnes

Expression of Multi-Domain Lytic Peptide Genes in Transgenic Plants for Disease Resistance , George Biliarski

Understanding Nitrogen Limitation In Soybean , Nicolas Cafaro La Menza

Herbicide Drift Influence on Amaranthus spp. Herbicide Resistance Evolution , Bruno Canella Vieira

Integrated management of Phytophthora stem and root rot of soybean and the effect of soil-applied herbicides on seedling disease incidence , Vinicius Castelli Garnica

Biomethane Production From Distillery Wastewater , Zachary Christman

Improving the Distribution and Use of Biogas by Conversion to Methanol , Zachary Christman

Introduction to Sorghum Paper Production , Zachary Christman

EFFECTS OF DIFFERENT WATER AND NITROGEN REGIMENS ON YIELD OF WINTER WHEAT PRODUCED IN NEBRASKA , Joseph Emory Davis

Investigating Parental Effects on End-Use Quality in Hard Winter Wheat (Triticum aestivum L.) Hybrids , Anthony Delaney

Dual Biological Control: Characterization of Fungi and Bacteria to Control Granary Weevil and Fungal Pathogens of Stored Grain , Gülçin Ercan

Genome-wide Association Studies in Maize and Sorghum , Preston Hurst

ESTABLISHMENT OF PERENNIAL LEGUMES WITH AN ANNUAL WARM-SEASON GRASS AS A COMPANION CROP , Martina N. La Vallie

New Approaches to Use Genomics, Field Traits, and High-throughput Phenotyping for Gene Discovery in Maize ( Zea mays ) , Zhikai Liang

CANAVALIA AND DOLICHOS EXTRACTS FOR SUSTAINABLE PEST BIOCONTROL AND PLANT NUTRITION IMPROVEMENT IN EL SALVADOR , Carlos Martinez

Evaluation of Stabilized Fertilizer and Crop Canopy Sensors as Next-Generation Nitrogen Management Technologies in Irrigated Corn , Leonardo Mendes Bastos

A Survey of Soil Properties Affecting Vegetation Establishment Along Nebraska Highways , Shad D. Mills

Rust and Viral Mosaic Diseases in Biofuel Switchgrass , Anthony A. Muhle

DNA BARCODING OF PRATYLENCHUS FROM AGROECOSYSTEMS IN THE NORTHERN GREAT PLAINS OF NORTH AMERICA , Mehmet Ozbayrak

Use of Annual Forage Mixtures in Crop/Livestock Production Systems in Nebraska , Nathan Paul Pflueger

Legacy Effects of Biodegradable Mulch and Soil Amendments on Vegetable Crops and the Soil , Elise V.H. Reid

Microbial Response to Biodegradable Mulch: Can Degradation Rate Be Accelerated by Management? , M. Benjamin Samuelson

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

Use of UAV Imagery and Nutrient Analyses for Estimation of the Spatial and Temporal Contributions of Cattle Dung to Nutrient Cycling in Grazed Ecosystems , Amanda Shine

BENCHMARKING ON-FARM MAIZE NITROGEN BALANCE IN THE WESTERN U.S. CORN BELT , Fatima Amor Tenorio

Critical Time for Weed Removal in Corn ( Zea mays L.) as Influenced by Pre Herbicides , Ayse Nur Ulusoy

Hormonal Signaling Induced in Soybean by Lysobacter enzymogenes Strain C3 , Jessica C. Walnut

Integration of Cover Crops Into Midwest Corn-Soybean Cropping Systems and Potential for Weed Suppression , Joshua S. Wehrbein

Evaluation of bacillus strains for plant growth-promotion potentials on corn (Zea mays) , wheat (Triticum aestivum) , and soybean (Glycine max) . , Rufus John Akinrinlola

Identification of Genes/Genomic Regions Controlling Resistance to Biotic and Abiotic Stresses in Synthetic Hexaploid Wheat , Madhav Bhatta

Epidemiology and Management of Fusarium Head Blight and Foliar Fungal Diseases of Wheat , Carlos Bolanos-Carriel

Spray Characterization and Herbicide Efficacy as Influenced by Pulse-Width Modulation Sprayers , Thomas R. Butts

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Home > CNS > Agriculture > HORTICULTURE_THESES

Horticulture Masters Theses Collection

Theses from 1964 1964.

The effect of certain chemicals on the rate of respiration, firmness and color change of harvested tomato fruit. , Amr Abdel Fattah Ismail, Horticulture

Inheritance studies of shuck color and size of laminae in ears of sweet corn. , Bruce Wendell Ogilvie, Horticulture

Theses from 1962 1962

Identification of ornamental crab apples by pages and petiole sections. , Tom Sherman Hamilton, Horticulture

Theses from 1961 1961

The influence of nitrogen fertilization, vine killing and storage temperatures on chip color of Massachusetts grown potatoes. , Chaim Frenkel, Horticulture

Theses from 1960 1960

Life history studies and the control of northern nutgrass (Cyperus esculentus L.). , John Wilbur Durfee, Horticulture

Theses from 1947 1947

The stability of carotene and vitamin A in mixed poultry rations and the comparative efficiency of these components for egg production and hatchability. , Leonard Raymond Parkinson, Horticulture

Theses from 1945 1945

A study of the effect of different canning procedures on the stability of certain of the "B" vitamins in mushrooms (Agaricus campestris). , Angela Mary Filios, Horticulture

Theses from 1944 1944

Canning, freezing, salting, and dehydration as methods of home food preservation. , Celeste Margaret Dubord, Horticulture

A study of methods of preparation and containers for canned tomato juice and factors influencing its quality. , Rubie Alfreda Woodward, Horticulture

Theses from 1943 1943

The preservation of cranberries and mushrooms by dehydration and freezing. , Harvey James Brunell, Horticulture

Theses from 1942 1942

The utilization and preservation of limes. , Ahmed Abd El Wahab Abd, Horticulture

The effect of sucrose and dextrose on the thermal resistance of some acid food spoilage organisms. , Harvey Fram, Horticulture

U.S. grade labeling and its effects on the producer and consumer. , Henry Shoub Kushlan, Horticulture

The effects of domestic refrigeration on foods. , John Earl Willard McConnell, Horticulture

Theses from 1941 1941

Apple juice; clarification by the gelatin-tannin method. , Robert Louis Messier, Horticulture

Acetic acid in the preservation of fountain syrups. , Roy Earl Morse, Horticulture

Theses from 1940 1940

A study of the effect of light on the oxygen content of the headspace of glasspacked fruit juices. , William Henry Fitzpatrick, Horticulture

Some factors affecting the toxicity of red squill. , Joseph Arthur Lubitz, Horticulture

The effect of dextrose and sucrose on the growth of Saccharomyces cereviseae and Aspergillus niger. , Leonard Tarkow, Horticulture

An investigation of apple cider jelly and apple cider marmalade. , Fred Benidict Voit, Horticulture

Nutritive and enzymic studies on the cranberry. , Frank John Yourga, Horticulture

Theses from 1939 1939

A cost analysis of home canning, and the acidification of non-acid vegetables in order to reduce the thermal treatment necessary for preservation. , Kenneth E. Benson, Horticulture

Citrus by-products. , Norman Glaskin, Horticulture

Studies on the canning of apples in syrup. , Andrew A. McCornack, Horticulture

Theses from 1938 1938

A study of the suitability of native citron melon and watermelon for preserves, pickles and candied fruit. , Lavada Katherine Curtis, Horticulture

The utilization of dextrose in manufactured pickle products. , Harlan A. Howard, Horticulture

The effect of pectin supplements in avitaminosis A in rats. , Abraham Kobren, Horticulture

The development of canned rat bait. , Ernest Merle Mills, Horticulture

The effect of fruits in the diet of rats on calcium retention. , Abraham. Mindell, Horticulture

Factors influencing quality of apple pectin extracts. , Sylvester C. Mitchell, Horticulture

The utilization of dextrose in the manufacture of fruit sauces and syrups. , Charles W. Morrison, Horticulture

The determination of ascorbic acid (Vitamin C) in highly colored plant tissues. , Edwin F. Poland, Horticulture

Technical and nutritional investigations on canned baked apples. , John Ruffley, Horticulture

Benzoate ice in fish preservation. , Philip Nelson Simon, Horticulture

Theses from 1937 1937

A powdered buttermilk dog ration , John William Bernotavicz, Horticulture

Nutritive studies on distillers' by-products , Augustino D. D'ercole, Horticulture

The stability of vitamin C in spinach to cooking, freezing, canning and drying , Carl F. Dunker, Horticulture

The utilization of dextrose in the manufacture of fruit sauces and syrups , Kenneth Raycraft Newman, Horticulture

Effect of apples, tomatoes and dates on urinary acidity and blood alkali reserve , Kevin Griffin Shea, Horticulture

Theses from 1936 1936

Studies on the utilization and nutritive value of whiting (Merluccius bilinearis) , Donald A. Bean, Horticulture

Factors in the management of golf courses as illustrated by the study of a specific golf club , Lawrence Sumner Dickinson, Horticulture

Utilization and composition of green and red peppers (Capsicum annum) , Vladimir. Jancik, Horticulture

Nutritive studies on wild and cultivated blueberries , Oreana Alma Merriam, Horticulture

Preparation and preservation of apple pectin extracts , Robert Vincent Murray, Horticulture

Crushed fruits and syrups , William Fenton Robertson, Horticulture

Theses from 1935 1935

Some internal physical conditions in glass containers of food during thermal treatment , Walter Arnold Maclinn, Horticulture

Corn sugar utilization in the manufacture of horticultural food products , Thomas. Onsdorff, Horticulture

Community canning projects in the South , Leora Jones Spaulding, Horticulture

Theses from 1934 1934

Preparation and properties of red squill extracts , Robert Edward Buck, Horticulture

Preservation of dried figs with special emphasis on pasteurization , Abraham. Naoum, Horticulture

Theses from 1933 1933

Studies in oven canning , Pearl R. Haddock, Horticulture

The use of red squill as a raticide , Michael Gerald O'connor, Horticulture

Chemical and microbiological studies on Citron (Citrus medica, Linn.) , Ernest Gordon Smith, Horticulture

Theses from 1932 1932

Vitamin C content of cranberries , Paul Dwight Isham, Horticulture

The propagation of Sciadopitys verticillata Sieb. + Zucc , Wayne J. Lowry, Horticulture

Preservation, utilization and properties of cranberry juice , Cecil Curtis Rice, Horticulture

Theses from 1924 1924

The study of the growth and bearing habit of apple spurs and shoots as related to biennial bearing , Warren Bryan Mack, Horticulture

Theses from 1922 1922

Investigations in avocado breeding , B. S. Nirody, Horticulture

Theses from 1916 1916

Foliage key to trees and shrubs: including those native and introduced species with alternate leaves that are deciduous and semi-evergreen and hardy in New England and New York , Arthur S. Thurston, Horticulture

Theses from 1915 1915

Inheritance of habit in the common bean , John B. Norton, Horticulture

Theses from 1913 1913

Report on Rosedale Subdivision Richmond, Virginia , John Bullock Watkins, Horticulture

Theses from 1911 1911

Types of corn suited to Massachusetts conditions , Philip H. Smith, Horticulture

Theses from 1896 1896

The Tanning Principles of Plants , Frederic J. Smith, Horticulture

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Theses and Dissertations

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M.S. in Horticulture

Ph.D. in Horticulture

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The Ph.D. in Horticulture is granted for proven ability in research and scholarship. The student conducts research under the guidance of the major professor with input from the student’s doctoral committee. The doctoral committee consists of a minimum of five members of the graduate faculty, including at least two from the Department of Horticulture and a representative from the Graduate Council.

Requirements

• There is no rigid credit requirement; however the equivalent of at least three years of full-time graduate work beyond the bachelor’s degree (at least 108 graduate credits) is required.
• The equivalent of one full-time academic year in regular non-blanket course work (at least 36 graduate credits).
• A graduate student who holds an M.S. degree must file a study program with the graduate school by the end of one calendar year of enrollment as a Ph.D. student. This program is formulated and approved at a formal meeting of the student's doctoral committee prior to this date.
• No more than 15 hours of blanket-numbered courses (e.g., 501, 507, etc.), other than thesis (Hort 503), may be included in the program.
• HORT 507 (1 credit), Horticulture Seminar. The student presents a seminar at the regularly scheduled time of the department seminar (Tuesdays at 4:00 pm).
• HORT 511 (2 credits), Research and Educational Perspectives in Horticulture, to be taken the first Fall term of enrollment (not required if the student earned these credits as an MS student).
• A minimum of 6 credits of ENT/HORT 518, PBG/HORT 519, or HORT 520 (two credits per course).  At least one course should be related to the student's area of emphasis, but students are encouraged to enroll in other topic areas.
• Successful completion of an oral preliminary examination. In Horticulture it is the prerogative of a major professor to require a written comprehensive examination as well.
• Successful completion of a final oral examination, which includes a defense of the thesis.

Courses in the major, Horticulture, may be selected from those in Horticulture (i.e. with a Hort designation) as well as from those offered by many other departments and programs.

• Plant Breeding and Genetics

Learning Outcomes: 

Through successful participation and completion of a Doctoral degree in Horticulture students will gain an advanced understanding of horticulture and the interaction with related disciplines, and conduct original research that advances the field of horticulture. Students will be trained through disciplinary coursework and research experience to provide soil science expertise and will have the breadth of knowledge to be able to communicate with professionals from the broad range of specialties involved in horticultural systems management and research.

Outcome 1: SCHOLARSHIP

Graduates will have the ability to conduct original research that extends knowledge in the field of horticulture. This will be demonstrated through mastery and application of critical thinking in the design and conduct of original research, and application of standard and innovative theory and methods in both coursework and an individual thesis research project.

Outcome 2: KNOWLEDGE

Graduates will be able to demonstrate:

• In-depth disciplinary knowledge and capacity to apply that knowledge to horticultural systems issues at multiple scales and levels of biological organization.

• Skill in integrating horticultural systems concepts across multiple disciplines.

• Original and innovative contributions to the understanding of horticultural systems.

• The ability to employ technical knowledge and leadership skills to a horticulture research problem.

Learning outcomes specific to Horticulture students:

• Ability to perform basic analyses in horticulture.

• Ability to perform other basic tasks required of a professional horticultural researcher.

• Understand key linkages and interactions between horticulture and other biological and earth science processes.

• Ability to make original contributions to the understanding of horticultural systems.

These outcomes will be accomplished through successful completion of the coursework required for the degree and a dissertation research project.

Outcome 3: COMMUNICATION

Graduates will have the ability to communicate professionally and with the public about horticulture research and horticultural resources. They will gain skills and experience in communicating in both formal and informal venues with learners, practitioners and community members. This will be demonstrated through presentation of a thesis, a special non-thesis seminar and a teaching assignment.

Outcome 4: ETHICS AND DIVERSITY

Graduates will have a commitment to diversity and high ethical standards in scholarship, teaching and service. This will occur through participation and training in research methods courses, professional development courses, and seminars, workshops, or other activities focused on diversity and ethics. 

Outcome 5: BROADER IMPLICATIONS

Graduates will demonstrate awareness of the broader implications of their research. These broader implications can include the linkages and relationships between the student’s research and aspects of broader society such social relationships—including issues relating to diversity equity and inclusion, economics, and environmental impacts. This will be demonstrated through exploration of these issues in the thesis, as part of the thesis seminar, or during the final exam.

Learn more: 

Degree: Horticulture

Level: Doctor of Philosophy (Ph.D.)

Department: Department of Horticulture

Class Location: Corvallis Campus

Contact Us: 

For more information or to review our admissions process , please contact: Elaine Clark Oregon State University 4017 ALS Building Corvallis, OR 97331-3002 Phone: (541) 737-5477 Fax: (541) 737-3479

Degree Requirements - OSU Catalog

John Lambrinos Director of Graduate Programs 4137 Ag Life Sciences Bldg Corvallis, OR 97331-3002 Phone: (541) 737-3484 [email protected]

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Ph.D. Horticulture

The Doctor of Philosophy (PhD) degree in Horticulture program is designed to prepare students to become successful independent researchers to help meet the challenge of providing nutritious foods and sustaining an aesthetically-pleasing and healthy environment to support the health and well-being of the citizens of Texas and beyond. Our program provides an advanced science-based education for students through innovative teaching and directed horticultural research experiences. The program encompasses basic genetic, physiology, production, processing and utilization of horticultural products including fruits, vegetables, flowers, and landscape plants.

Ph. D. Program Details

For a PhD degree, a student with a Master’s degree must complete 64 hours, and a student with only a baccalaureate degree must complete 96 hours.

• Degree: Ph.D. in Horticulture
• Credit Hours: 36 total credit hours

NOTE: It is highly recommended that all graduate students in the Department of Horticultural Sciences have taken or will take 6 credit hours of 200, 300, 400, or 600 level HORT courses prior to admission. In the event that a student is deficient in HORT courses, the student’s committee can require the student to take an additional 6 credit hours of HORT (300, 400 or 600 level courses) as part of their degree  The courses must be approved by the Chair of the student’s Advisory Committee.  Any 300, 400, or 600 level courses may be applied towards the student’s Degree Plan with the Chair and Committee’s approval.  These 6 hours of HORT courses will be in addition to the 9 hour Master’s and 12 hour Doctoral requirement at the 600 level for all HORT graduate students.  If the student is deficient in the non-HORT supporting field courses (for example: chemistry, soils, plant physiology, etc.), the Chair will determine course prerequisites that need to be taken.

More information about the Department of Horticultural Science’s graduate faculty and their research can be found in Table 2 of the TAMU Graduate Horticultural Sciences Policy Handbook .

Degree requirements are posted in the official TAMU  Graduate Horticultural Sciences Policy Manual . Students must meet requirements set forth in the Texas A&M University catalog which is current in the year of their first registration, and the catalog is updated on an annual basis.  The official University Catalog for the current academic year can be accessed online.

Graduate Admissions

Texas A&M University is the premier choice to gain a graduate degree, thanks to our national academic ranking and high financial value. Joining the Aggie Family and gaining an advanced degree from Texas A&M puts you in the highest class of job candidates.

What Do I Need to Apply?

• Minimum GPR of 3.0 in the last 60 hours of undergraduate work, or 3.25 in 30 hours or more of graduate work.
• Application through the Texas A&M University GraduateCAS system
• Resume or Curriculum Vitae
• Statement of Purpose
• Three letters of recommendation, submitted online with your application.
• Official transcripts and records , sent to the Office of Admissions .

International Students

International students are required to verify English language proficiency using one of the methods outlined by the Office of Admissions details can be found at Texas A&M University Office of Admissions.

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