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¸£Àû±ÆÕ¾ Catalog 2023-2024

Crop Science

This is an archived copy of the 2023-2024 catalog. To access the most recent version of the catalog, please visit .

The Graduate Program in Crop Science revolves around our vision of being a world leader in Crop Science education and in the generation and application of knowledge required for economically and environmentally sustainable crop systems and products, as well as in developing land management strategies that protect the quality of North Carolina’s soil, water and air resources.

Our mission within the Graduate program is to develop future leaders in Crop Science with a focus on improving crop plants and products, devising effective and sustainable crop production systems and effective and sustainable management techniques in both agricultural and urban settings; and dissemination of crop science knowledge for the benefit of users and producers of food, feed, turf, biofuels and fiber in North Carolina, the nation and the world.

The specific program areas in which Graduate education focuses are crop management and physiology, plant breeding and genetics, weed science, alternative crops and pesticide fate and impact on the environment.

Entrance requirements for the Graduate program in Crop Science follow the NC State Graduate School guidelines. A minimum of a 3.0 GPA at the Baccalaureate or master’s level is required, although exceptions may be made for master’s applicants with a very strong GPA in science classes and/or their final two years, or with substantial post-baccalaureate work experience. Students accepted will typically have a bachelor’s or master’s degree in crop science, or closely related fields, with strong preparation in the biological and physical sciences. 

Financial assistance in the form of a Graduate Assistantship is available for most of the students accepted into the program. However, funding is limited and positions are highly competitive within a major professor’s program area. It is recommended that applicants review the department’s faculty listing and communicate directly with faculty members who have similar interest to theirs. 

Faculty

Adjunct Professors

  • Gina Brown-Guedira
  • Kent O. Burkey
  • Thomas E. Carter
  • Miguel S. Castillo
  • Guy D. Collins
  • Richard J. Cooper
  • Ralph E. Dewey
  • Keith L. Edmisten
  • Loren Ray Fisher
  • Major M. Goodman
  • Candace H. Haigler
  • Ronnie W. Heiniger
  • James B. Holland
  • David L. Jordan
  • Vasu Kuraparthy
  • Ramsey S. Lewis
  • David P. Livingston III
  • David S. Marshall
  • Rouf M. Mian
  • Grady L. Miller
  • J. Paul Murphy
  • Robert P. Patterson
  • Charles H. Peacock
  • S. Christopher Reberg-Horton
  • Robert J. Richardson
  • Thomas W. Rufty Jr.
  • Michelle S. Schroeder-Moreno
  • Randy Wells
  • Fred H. Yelverton
  • Wesley J. Everman
  • Travis W. Gannon
  • Ramon Gonzalo Leon Gonzalez
  • Matthew D. Krakowsky
  • Susana R. Milla-Lewis
  • Lori J. Unruh Snyder
  • Charles W. Cahoon
  • Jeffrey C. Dunne
  • Benjamin David Fallen
  • Joseph Lee Gage
  • Amanda M. Hulse-Kemp
  • Anna Locke
  • Angela R. Post
  • David H. Suchoff
  • Earl Taliercio
  • Matthew C. Vann
  • Rachel A. Vann
  • Daniel C. Bowman
  • Daryl T. Bowman
  • Arthur H. Bruneau
  • Joseph W. Burton
  • Harold D. Coble
  • William K. Collins
  • Will A. Cope
  • Frederick T. Corbin
  • David A. Danehower
  • James T. Green, Jr.
  • Harry D. Gross
  • Robert D. Keys
  • H. Michael Linker
  • Raymond C. Long
  • Jean-Marie Luginbuhl
  • Gail G. McRae
  • J. Paul Mueller
  • Gerald F. Peedin
  • Rongda Qu
  • W. David Smith
  • Janet F. Spears
  • Harold T. Stalker, Jr.
  • Gene A. Sullivan
  • Donald L. Thompson
  • Jerome B. Weber
  • Arthur K. Weissinger
  • P. Randall Weisz
  • Earl A. Wernsman
  • A. Douglas Worsham
  • Johnny C. Wynne
  • Alan C. York
  • Thomas R. Sinclair

Research Scholars

  • Robert E. Austin

Assistant Professors

  • Amanda Avila Cardoso
  • Qiyu Zhou

Courses

°ä³§Ìý502/±á³§Ìý502/±Ê±ÊÌý502ÌýÌýPlant Disease: Methods & DiagnosisÌýÌý(2 credit hours)ÌýÌý

Introduction to the basic principles of disease etiology in plants and the methods used to research and diagnose plant diseases caused by bacteria (and other prokaryotes), fungi (and oomycetes), nematodes and viruses. Lab-based course intended to give graduate students a practical, hands-on research experience for diagnosing and characterizing each plant pathogen group. Introduction to pathogen-specific as well as more general experimental techniques utilized in plant pathology. No course prerequisites, but prior experience in microbiology and/or completion of ±Ê±ÊÌý315, ±Ê±ÊÌý501 or equivalent will benefit the ±Ê±ÊÌý502 learning experience.

Prerequisite: Graduate standing or department consent

Typically offered in Fall only

°ä³§Ìý514/°ä³§Ìý414ÌýÌýWeed ScienceÌýÌý(4 credit hours)ÌýÌý

Introduces topics fundamental to the discipline of weed science. Lecture topics include losses caused by weeds, weed biology, weed ecology, biological, chemical, cultural, and mechanical weed control, herbicide modes of actions, uses, and symptomology, and herbicide resistance. In addition, students will be introduced to weed management in various facets of agriculture through guest lectures from a wide range of NC State faculty with weed management responsibilities. Guest lectures include weed management in traditional row crops, aquatics, turf, tobacco, vegetables, ornamentals, pastures and hay crops, organic systems, and tree fruit.

Typically offered in Fall only

°ä³§Ìý518/°ä³§Ìý418ÌýÌýIntroduction to Regulatory Science in AgricultureÌýÌý(3 credit hours)ÌýÌý

This course covers laws, regulations and agencies involved in the registration of conventional, biotechnology and biological crops, crop protectants and growth regulators. US and International laws and regulations will be discussed from technical proof of concept through commercial release.

Typically offered in Fall only

°ä³§Ìý524/°ä³§Ìý424ÌýÌýSeed PhysiologyÌýÌý(3 credit hours)ÌýÌý

This course will explore the physiological processes associated with seed formation, development, maturation, germination, and deterioration of agronomic and horticultural species. We will also study the physiological aspects of seed dormancy, how dormancy is manifested and overcome in cultivated and noncultivated systems and dormancy's impact on weed seedbank ecology.

Typically offered in Fall only

°ä³§Ìý528/°ä³§Ìý428ÌýÌýAdvanced Regulatory Science in AgricultureÌýÌý(3 credit hours)ÌýÌý

This course goes into additional depth and provides hands-on exercises concerning agriculture regulatory topics covered in °ä³§Ìý418/518. The course will introduce laws, regulations and agencies involved in the fertilizer, animal and waste management as well as the role of public policy in the regulatory process. °ä³§Ìý418/518 is a prerequisite for this class.

Prerequisite: °ä³§Ìý418

Typically offered in Spring only

°ä³§Ìý530/°ä³§Ìý430ÌýÌýAdvanced AgroecologyÌýÌý(4 credit hours)ÌýÌý

This course applies agroecological principles and critical thinking to evaluate various agroecosystems. Students will examine food, fiber, and other commodity production systems for security, productivity, and sustainability and address the simultaneous need to protect natural environments and the biodiversity on which agroecosystems depend. Topics include discussion of national and international government policies, research programs, and education programs that influence the future application of agroecosystem principles.

Typically offered in Spring only

°ä³§Ìý535/³§³§°äÌý535ÌýÌýRoot and Rhizosphere Processes for Plant NutritionÌýÌý(3 credit hours)ÌýÌý

The focus of this course is on the understanding of concepts and principles of plant hydro-mineral acquisition, plant adaptation to nutrient deficiencies, water and nutrient cycles in the soil, and the impact that microbial communities have on these processes. Understanding below ground biological networks and their complexity is crucial for understanding soil fertility and improving the acquisition of nutrients in natural and agroecosystems.

Prerequisite: ³§³§°äÌý200 or ±ÊµþÌý321, or consent of instructor

Typically offered in Fall only

°ä³§Ìý541/±á³§Ìý541ÌýÌýPlant Breeding MethodsÌýÌý(3 credit hours)ÌýÌý

Overview of plant breeding methods for advanced undergraduate and beginning graduate students. Covers principles and concepts of inheritance, germplasm resources, pollen control, measurement of genetic variances, and heterosis. Special topics include heritability, genotype-environment interaction, disease resistance, and polyploidy. In-depth coverage on methods for breeding cross-pollinated and self-pollinated crops. Prepares students for advanced plant breeding courses.

Prerequisite: ³§°ÕÌý511, Corequisite: ³§°ÕÌý512

Typically offered in Fall only

°ä³§Ìý565/°ä³§Ìý465ÌýÌýTurf Management Systems and Environmental QualityÌýÌý(3 credit hours)ÌýÌý

Integration of turfgrass management systems and the use of BMPs and IPM to protect environmental quality. Examination of water quality issues relative to turf. Application of Best Management Practice and Integrated Pest Management strategies. Credit cannot be received for both °ä³§Ìý465 and °ä³§Ìý565. Senior standing.

Prerequisite: °ä³§Ìý400 and Senior standing

Typically offered in Fall only

°ä³§Ìý590ÌýÌýSpecial TopicsÌýÌý(1-6 credit hours)ÌýÌý

The study of special problems and selected topics of current interest in crop science and related fields.

°ä³§Ìý601ÌýÌýSeminarÌýÌý(1 credit hours)ÌýÌý

Review and discussion of scientific articles, progress reports in research and special problems of interest to agronomists. Maximum of two credits allowed toward master's degree; however, additional credits toward doctorate allowed.

Prerequisite: Graduate standing

Typically offered in Fall, Spring, and Summer

°ä³§Ìý620ÌýÌýSpecial ProblemsÌýÌý(1-6 credit hours)ÌýÌý

Special problems in various phases of crop science. Problems may be selected or will be assigned. Emphasis on review of recent and current research. Credits Arranged.

Typically offered in Fall, Spring, and Summer

°ä³§Ìý685ÌýÌýMaster's Supervised TeachingÌýÌý(1-3 credit hours)ÌýÌý

Teaching experience under the mentorship of faculty who assist the student in planning for the teaching assignment, observe and provide feedback to the student during the teaching assignment, and evaluate the student upon completion of the assignment.

Prerequisite: Master's student

Typically offered in Fall and Spring

°ä³§Ìý688ÌýÌýNon-Thesis Masters Continuous Registration - Half Time RegistrationÌýÌý(1 credit hours)ÌýÌý

For students in non-thesis master's programs who have completed all credit hour requirements for their degree but need to maintain half-time continuous registration to complete incomplete grades, projects, final master's exam, etc.

Prerequisite: Master's student

Typically offered in Spring only

°ä³§Ìý689ÌýÌýNon-Thesis Master Continuous Registration - Full Time RegistrationÌýÌý(3 credit hours)ÌýÌý

For students in non-thesis master's programs who have completed all credit hour requirements for their degree but need to maintain full-time continuous registration to complete incomplete grades, projects, final master's exam, etc. Students may register for this course a maximum of one semester.

Prerequisite: Master's student

Typically offered in Spring only

°ä³§Ìý690ÌýÌýMaster's ExaminationÌýÌý(1-9 credit hours)ÌýÌý

For students in non thesis master's programs who have completed all other requirements of the degree except preparing for and taking the final master's exam.

Prerequisite: Master's student

Typically offered in Spring only

°ä³§Ìý693ÌýÌýMaster's Supervised ResearchÌýÌý(1-9 credit hours)ÌýÌý

Instruction in research and research under the mentorship of a member of the Graduate Faculty.

Prerequisite: Master's student

Typically offered in Fall, Spring, and Summer

°ä³§Ìý695ÌýÌýMaster's Thesis ResearchÌýÌý(1-9 credit hours)ÌýÌý

Thesis research.

Prerequisite: Master's student

Typically offered in Fall, Spring, and Summer

°ä³§Ìý696ÌýÌýSummer Thesis ResearchÌýÌý(1 credit hours)ÌýÌý

For graduate students whose programs of work specify no formal course work during a summer session and who will be devoting full time to thesis research.

Prerequisite: Master's student

Typically offered in Summer only

°ä³§Ìý699ÌýÌýMaster's Thesis PreparationÌýÌý(1-9 credit hours)ÌýÌý

For students who have completed all credit hour requirements and full-time enrollment for the master's degree and are writing and defending their thesis.

Prerequisite: Master's student

Typically offered in Spring and Summer

°ä³§Ìý701ÌýÌýBreeding for Insect Resistance and Abiotic StressÌýÌý(2 credit hours)ÌýÌý

This course will cover the basic principles of breeding for insect resistance and abiotic stress. Topics include plant defenses, interactions between pest or stress and plant and environment, types of resistance, methods of breeding and screening.

Prerequisite: °ä³§Ìý413, °ä³§Ìý541, or ³Ò±·Ìý311; Students who believe to have acquired a similar background through different courses should contact the instructor or the director of the program.

Typically offered in Fall only

°ä³§Ìý714ÌýÌýCrop Physiology: Plant Response to EnvironmentÌýÌý(3 credit hours)ÌýÌý

Examines interactions between plants and the environment. Light environment, plant canopy development, photosynthesis, source-sink relations, growth analysis, growth regulation, water relations, and environmental stresses are addressed.

Typically offered in Fall only

°ä³§Ìý716/±á³§Ìý716ÌýÌýWeed BiologyÌýÌý(3 credit hours)ÌýÌý

This course analyzes the interactions between human disturbance and dynamics of weed populations and communities. Emphasis is given to factors that drive weed control actions and the ecological and evolutionary processes by which weeds survive and adapt to these actions. Similarities and differences between weeds and invasive plant species are discussed as well as benefits and limitations of using traditional ecological theory from natural systems to explain weed behavior in highly disturbed environments.

Prerequisite: °ä³§Ìý414

Typically offered in Spring only

°ä³§Ìý717/±á³§Ìý717ÌýÌýWeed Management SystemsÌýÌý(1 credit hours)ÌýÌý

Weed management systems including integration of cultural, biological, mechanical and chemical methods for vegetables, fruits, ornamentals, turf, small grains, corn, tobacco, cotton, peanuts, aquatic and non-cropland settings. Taught second 5 weeksof semester. Drop date is by last day of 3rd week of minicourse.

Prerequisite: °ä³§Ìý414

Typically offered in Fall only

°ä³§Ìý720/³Ò±·Ìý720/±á³§Ìý720ÌýÌýMolecular Biology In Plant BreedingÌýÌý(3 credit hours)ÌýÌý

Theory and principles of molecular biology applied to plant breeding. Understanding of the relationship between genes and crop traits. Principles and molecular mechanisms of crop traits, and their applications to solve breeding problems and improve crop traits, which include heterosis, male/female sterility, self-incompatibility, polyploidy, double haploid, protoplast fusion, random mutagenesis, plant regeneration, transgenic breeding, advanced genome editing for breeding, gene silencing, gene activation, gene drive, plant synthetic biology, metabolic engineering, epigenetics for trait improvement, gene stacking, decoy and R genes, and bioconfinement.

P: °ä³§Ìý211 or ³Ò±·Ìý311 or equivalent, and ±ÊµþÌý421 or equivalent.

Typically offered in Spring only

°ä³§Ìý725/±á³§Ìý725/³§³§°äÌý725/°Õ°¿³ÝÌý725ÌýÌýPesticide ChemistryÌýÌý(1 credit hours)ÌýÌý

Chemical properties of pesticides including hydration and solvation, ionization, volatilization, lipophilicity, molecular structure and size, and reactivity and classification according to chemical description, mode of action or ionizability. Taughtduring the first 5 weeks of semester. Drop date is last day of 3rd week of the minicourse.

Typically offered in Fall only

°ä³§Ìý726/´¡±·³§Ìý726/¹ó°¿¸éÌý726ÌýÌýAdvanced Topics In Quantitative Genetics and BreedingÌýÌý(3 credit hours)ÌýÌý

Advanced topics in quantitative genetics pertinent to population improvement for quantitative and categorical traits with special applications to plant and animal breeding. DNA markers - phenotype associations. The theory and application of linear mixed models, BLUP and genomic selection using maximum likelihood and Bayesian approaches. Pedigree and construction of genomic relationships matrices from DNA markers and application in breeding.

Prerequisite: ³§°ÕÌý511, Corequisite: ³§°ÕÌý512

Typically offered in Fall only

°ä³§Ìý727/±á³§Ìý727/³§³§°äÌý727/°Õ°¿³ÝÌý727ÌýÌýPesticide Behavior and Fate In the EnvironmentÌýÌý(2 credit hours)ÌýÌý

Sorption/desorption, soil reactivity, movement, volatilization, bioavailability, degradation and stability of pesticides in the environment. Taught during the last 10 weeks of semester. Drop date is last day of 3rd week of the minicourse.

Prerequisite: CS(HS,SSC,TOX) 725,³§³§°äÌý200

Typically offered in Fall only

°ä³§Ìý729/±á³§Ìý729ÌýÌýHerbicide Behavior In PlantsÌýÌý(2 credit hours)ÌýÌý

Chemical, physiological and biochemical actions of herbicides in plants including uptake, translocation, metabolism and mechanism of action.

Prerequisite: BO 751 and BO 752 and CS(HS,SSC) 725

Typically offered in Spring only

°ä³§Ìý745/³Ò±·Ìý745/±á³§Ìý745ÌýÌýQuantitative Genetics In Plant BreedingÌýÌý(1 credit hours)ÌýÌý

Theory and principles of plant quantitative genetics. Experimental approaches of relationships between type and source of genetic variability, concepts of inbreeding, estimations of genetic variance and selection theory.

Prerequisite: CS(GN, HS) 541, ST 712, course in quantitative genetics recommended

Typically offered in Spring only

°ä³§Ìý746/³Ò±·Ìý746/±á³§Ìý746ÌýÌýCytogenetics in Plant BreedingÌýÌý(2 credit hours)ÌýÌý

Theory and principles of plant breeding methodology including population improvement, selection procedures, genotypic evaluation, cultivar development and breeding strategies.

Typically offered in Spring only

°ä³§Ìý755ÌýÌýApplied Research Methods and Analysis for Plant SciencesÌýÌý(3 credit hours)ÌýÌý

Students will gain understanding of the common principles of scientific method. They will gain knowledge and experience with planning for research, developing research objectives, methodology considerations, experimental design, statistical analyses, and presentation of data. Class will have a heavy focus on experimental methods in applied plant science research.

Prerequisite: ³§°ÕÌý511

Typically offered in Fall only

°ä³§Ìý795ÌýÌýSpecial TopicsÌýÌý(1-6 credit hours)ÌýÌý

The study of special problems and selected topics of current interest in crop science and related fields.

°ä³§Ìý801ÌýÌýSeminarÌýÌý(1 credit hours)ÌýÌý

Review and discussion of scientific articles, progress reports in research and special problems of interest to agronomists. Maximum of two credits allowed toward master's degree; however, additional credits toward doctorate allowed.

Prerequisite: Graduate standing

Typically offered in Fall and Spring

°ä³§Ìý820ÌýÌýSpecial ProblemsÌýÌý(1-6 credit hours)ÌýÌý

Special problems in various phases of crop science. Problems may be selected or will be assigned. Emphasis on review of recent and current research. Credits Arranged.

Typically offered in Fall, Spring, and Summer

°ä³§Ìý860/³Ò±·Ìý860/±á³§Ìý860ÌýÌýPlant Breeding LaboratoryÌýÌý(1 credit hours)ÌýÌý

Visitation of plant breeding projects in the Depts. of CS and HS at NC State, along with commercial seed companies. Discussion and viewing of breeding objectives, methods and equipment and teaching and practice of hybridization methods.

P: CS 741 or GN 741 or HS 741

Typically offered in Spring only

°ä³§Ìý861/³Ò±·Ìý861/±á³§Ìý861ÌýÌýPlant Breeding LaboratoryÌýÌý(1 credit hours)ÌýÌý

Visitation of plant breeding projects in the Depts. of CS and HS at NC State, along with commercial seed companies. Discussion and viewing of breeding objectives, methods and equipment and teaching and practice of hybridization methods.

P: CS 741 or GN 741 or HS 741

Typically offered in Fall only

°ä³§Ìý885ÌýÌýDoctoral Supervised TeachingÌýÌý(1-3 credit hours)ÌýÌý

Teaching experience under the mentorship of faculty who assist the student in planning for the teaching assignment, observe and provide feedback to the student during the teaching assignment, and evaluate the student upon completion of the assignment.

Prerequisite: Doctoral student

Typically offered in Fall and Spring

°ä³§Ìý890ÌýÌýDoctoral Preliminary ExaminationÌýÌý(1-9 credit hours)ÌýÌý

For students who are preparing for and taking written and/oral preliminary exams.

Prerequisite: Doctoral student

Typically offered in Spring and Summer

°ä³§Ìý893ÌýÌýDoctoral Supervised ResearchÌýÌý(1-9 credit hours)ÌýÌý

Instruction in research and research under the mentorship of a member of the Graduate Faculty.

Prerequisite: Doctoral student

Typically offered in Fall and Spring

°ä³§Ìý895ÌýÌýDoctoral Dissertation ResearchÌýÌý(1-9 credit hours)ÌýÌý

Dissertation research.

Prerequisite: Doctoral student

Typically offered in Fall, Spring, and Summer

°ä³§Ìý896ÌýÌýSummer Dissertation ResearchÌýÌý(1 credit hours)ÌýÌý

For graduate students whose programs of work specify no formal course work during a summer session and who will be devoting full time to thesis research.

Prerequisite: Doctoral student

Typically offered in Summer only

°ä³§Ìý899ÌýÌýDoctoral Dissertation PreparationÌýÌý(1-9 credit hours)ÌýÌý

For students who have completed all credit hour, full-time enrollment, preliminary examination, and residency requirements for the doctoral degree, and are writing and defending their dissertations.

Prerequisite: Doctoral student

Typically offered in Fall, Spring, and Summer