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Plant pathology is the study of plants and their pathogens, the process of disease, and how plant health and disease are influenced by factors such as the weather, nonpathogenic microorganisms, and plant nutrition. It encompasses fundamental biology as well as applied agricultural sciences.

Plant pathology involves the study of plants and pathogens at the genetic, biochemical, physiological, cellular, population, and community levels, and how the knowledge derived is integrated and put into agricultural practice. Prerequisite to effective research, teaching, and extension in plant pathology is a breadth of interdisciplinary interest and knowledge, in a department and in its individual members, reaching from ecology to microbiology, from meteorology to applied mathematics, and from molecular biology to communication skills.

Learn through real-world, hands-on experiences

Plant Pathology students learn in many field and lab courses, including classes that focus on economics of plant disease, interactions between plants and people, fungi, organic agriculture, and global food security. They can also take part in a summer field course, numerous internships, and research opportunities.

Build community and networks

Plant pathology is a field that thrives in, and makes its greatest contribution to, comprehensive institutions like the University of Wisconsin–Madison where the proximity and complementarity of basic sciences and the other applied agricultural sciences are exceptionally strong. Please visit the department's Extension and Outreach overview page for additional details on the department's outreach activities, public education programs, and student organizations.

Customize a path of study

Undergraduates in plant pathology can choose between two tracks. The plant–microbe biology track has courses in basic math and sciences, including biology, chemistry, and physics, along with upper-level courses in plant pathology, biochemistry, and microbiology. This track is geared toward students who have an interest in receiving a broad education in the basic sciences or plan to pursue a graduate or professional degree.

The plant health and industry track includes some courses in basic math and sciences, as well as additional courses in agriculture and economics/management and upper-level courses in plant pathology, entomology, and other agricultural sciences. This track is designed for students who intend to work in industry after receiving their undergraduate degree.

Students are also able to explore double majors and a multitude of undergraduate certificates based on their unique educational and professional interests. More information about careers in plant pathology is available from the department.

Make a strong start

Freshmen who are interested in plant pathology are encouraged to participate in a First-Year Interest Group (FIG) program. Topics of interest to Plant Pathology students include global food security, plants and human well-being, and many other fascinating options. See the latest Choose Your FIG catalog for details.

Gain global perspective

The plant pathology program is a great choice for students who wish to participate in a study abroad experience. Students can choose from a multitude of destinations worldwide and can travel abroad during summer, spring, or fall terms. Students can explore studying abroad as a Plant Pathology major by utilizing the Plant Pathology Major Advising Page. Students work with their advisor and the CALS study abroad office to identify appropriate programs.

How to Get in

To declare this major, students must be admitted to UW–Madison and the College of Agricultural and Life Sciences (CALS). For information about becoming a CALS first-year or transfer student, see Entering the College.

Students who attend Student Orientation, Advising, and Registration (SOAR) with the College of Agricultural and Life Sciences have the option to declare this major at SOAR.  Students may otherwise declare after they have begun their undergraduate studies. For more information, contact the advisor listed in the Contact Box for the major.

University General Education Requirements

All undergraduate students at the University of Wisconsin–Madison are required to fulfill a minimum set of common university general education requirements to ensure that every graduate acquires the essential core of an undergraduate education. This core establishes a foundation for living a productive life, being a citizen of the world, appreciating aesthetic values, and engaging in lifelong learning in a continually changing world. Various schools and colleges will have requirements in addition to the requirements listed below. Consult your advisor for assistance, as needed. For additional information, see the university Undergraduate General Education Requirements section of the Guide.

General Education
  • Breadth—Humanities/Literature/Arts: 6 credits
  • Breadth—Natural Science: 4 to 6 credits, consisting of one 4- or 5-credit course with a laboratory component; or two courses providing a total of 6 credits
  • Breadth—Social Studies: 3 credits
  • Communication Part A Part B *
  • Ethnic Studies *
  • Quantitative Reasoning Part A Part B *

* The mortarboard symbol appears before the title of any course that fulfills one of the Communication Part A or Part B, Ethnic Studies, or Quantitative Reasoning Part A or Part B requirements.

College of Agricultural and Life Sciences Requirements

In addition to the University General Education Requirements, all undergraduate students in CALS must satisfy a set of college and major requirements. Courses may not double count within university requirements (General Education and Breadth) or within college requirements (First-Year Seminar, International Studies, Science, and Capstone), but courses counted toward university requirements may also be used to satisfy a college and/or a major requirement; similarly, courses counted toward college requirements may also be used to satisfy a university and/or a major requirement.

College Requirements for all CALS BS Degree Programs

Quality of Work: Students must maintain a minimum cumulative grade point average of 2.000 to remain in good standing and be eligible for graduation.
Residency: Students must complete 30 degree credits in residence at UW–Madison after earning 86 credits toward their undergraduate degree.
First year seminar1
International studies3
Physical science fundamentals4-5
General Chemistry I
Chemistry in Our World
Advanced General Chemistry
Biological science5
Additional science (biological, physical, or natural)3
Science breadth (biological, physical, natural, or social)3
CALS Capstone Learning Experience: included in the requirements for each CALS major (see "major requirements")

Major Requirements

Courses may not double count within the major (unless specifically noted otherwise), but courses counted toward the major requirements may also be used to satisfy a university requirement and/or a college requirement. A minimum of 15 credits must be completed in the major that are not used to complete university or college requirements.

Core Mathematics
Complete one of the following (or may be satisfied by placement exam):5-6
Algebra
and Trigonometry
Algebra and Trigonometry
Calculus with Algebra and Trigonometry I
Core Chemistry
Complete one of the following:5-9
General Chemistry I
and General Chemistry II
Advanced General Chemistry
Introductory Biology
Complete one of the following options:10
Option 1 (preferred):
Introductory Biology
and Introductory Biology
Option 2:
Animal Biology
and Animal Biology Laboratory
and General Botany
Option 3:
Evolution, Ecology, and Genetics
and Evolution, Ecology, and Genetics Laboratory
and Cellular Biology
and Cellular Biology Laboratory
Core Physics
Complete one of the following:4-5
General Physics
General Physics
General Physics
Plant Pathology Core
PL PATH 300 Introduction to Plant Pathology4
PL PATH/BOTANY 332 Fungi4
Another PL PATH course numbered 300 and above 13
Capstone
PL PATH 590 Capstone in Plant Pathology3
Focus Areas
Complete one of the following:29-39
Plant-Microbe Biology Focus
Plant Health and Industry Focus
Total Credits67-83
1

Not including PL PATH 375 Special Topics or independent study credits—PL PATH 299 Independent Study, PL PATH 399 Coordinative Internship/Cooperative Education, PL PATH 590 Capstone in Plant Pathology, PL PATH 681 Senior Honors Thesis, PL PATH 682 Senior Honors Thesis, or PL PATH 699 Special Problems.

Focus Areas

Plant–Microbe Biology Focus

Additional Mathematics and Statistics
Complete one of the following:5
Survey of Calculus
Calculus with Algebra and Trigonometry II 1
Calculus and Analytic Geometry 1
Complete one of the following:3-4
Calculus and Analytic Geometry 2 2
Introduction to Statistical Methods
Introductory Applied Statistics for the Life Sciences
Additional Chemistry
Complete one of the following options:4-8
Organic Chemistry I
and Introductory Organic Chemistry Laboratory
and Organic Chemistry II
Elementary Organic Chemistry
and Elementary Organic Chemistry Laboratory
Biology
Complete one of the following options:5-8
Option 1:
Biology of Microorganisms
and Biology of Microorganisms Laboratory
Principles of Genetics
Option 2:
Complete two of the following:
Principles of Physiology
Principles of Physiology Laboratory
Biological Interactions
Additional Physics
Complete one of the following:4-5
General Physics
General Physics
General Physics
Plant Physiology
BOTANY 500 Plant Physiology3-4
Plant-Microbe Electives
Complete 5 credits from the following:5
Introduction to Biochemistry
Plant Anatomy
Plant Systematics
Vascular Flora of Wisconsin
General Ecology
Introduction to Entomology
Any PL PATH course numbered 300 and above
Total Credits29-39
1

MATH 171 is a prerequisite for MATH 217.

2

MATH 221 Calculus and Analytic Geometry 1/MATH 217 Calculus with Algebra and Trigonometry II is a prerequisite for MATH 222 Calculus and Analytic Geometry 2

Plant Health and Industry Focus

Biology
GENETICS 466 Principles of Genetics3
Core
PL PATH 559 Diseases of Economic Plants3-4
or BOTANY 500 Plant Physiology
Plant Health and Industry Electives
Complete 24 credits from at least two different subject listings from the following:24
Principles and Practices in Crop Production
Cropping Systems
Forage Management and Utilization
Introductory Ecology
Plant Anatomy
General Ecology
Plant Physiology
Introduction to Biochemistry
Introduction to Community and Environmental Sociology
Food, Culture, and Society
Poverty and Place
Sociology of Agriculture
Insects and Human Culture-a Survey Course in Entomology
Introduction to Entomology
Forests of the World
Human/Animal Relationships: Biological and Philosophical Issues
Extinction of Species
The Vegetation of Wisconsin
General Ecology
Forest Ecology
Survey of Horticulture
Sustainable Turfgrass Use and Management
Landscape Plants I
Environment of Horticultural Plants
Fruit Crop Production
General Microbiology
General Microbiology Laboratory
Biology of Microorganisms
Biology of Microorganisms Laboratory
Nutrition Today
Comparative Animal Nutrition
Human Nutritional Needs
World Hunger and Malnutrition
Nutritional Biochemistry and Metabolism
Community Nutrition and Health Equity
Any PL PATH course numbered 300 and above not already taken for another category
Earth's Water: Natural Science and Human Use
Soil: Ecosystem and Resource
General Soil Science
Soils and Environmental Quality
Plant Nutrition Management
Business
Complete 6 credits from the following:6
Introductory Financial Accounting
Introductory Managerial Accounting
Accounting Principles
Financial Reporting I
Financial Reporting II
Taxation: Concepts for Business and Personal Planning
Agricultural Systems Management
Introduction to Agricultural and Applied Economics
Commodity Markets
Cooperatives and Alternative Forms of Enterprise Ownership
Agricultural Finance
Economic Decision Analysis
Economic Problems of Developing Areas
Principles of Microeconomics
Principles of Macroeconomics
Marketing Communication for the Sciences
Managing Organizations
Human Resource Management
Total Credits36-37

University Degree Requirements  

Total Degree To receive a bachelor's degree from UW–Madison, students must earn a minimum of 120 degree credits. The requirements for some programs may exceed 120 degree credits. Students should consult with their college or department advisor for information on specific credit requirements.
Residency Degree candidates are required to earn a minimum of 30 credits in residence at UW–Madison. "In residence" means on the UW–Madison campus with an undergraduate degree classification. “In residence” credit also includes UW–Madison courses offered in distance or online formats and credits earned in UW–Madison Study Abroad/Study Away programs.
Quality of Work Undergraduate students must maintain the minimum grade point average specified by the school, college, or academic program to remain in good academic standing. Students whose academic performance drops below these minimum thresholds will be placed on academic probation.

Learning Outcomes

  1. Define and explain major concepts in the biological sciences including Plant Pathology.
  2. Appropriately use biological instrumentation and laboratory techniques.
  3. Explain and apply the scientific method including designing and conducting experiments and testing hypotheses.
  4. Recognize the relationship between structure and function at all levels: molecular, cellular, organismal, and ecological.
  5. Demonstrate a style appropriate for communicating scientific results in written and oral form.
  6. Integrate math, physical sciences, and technology to answer biological questions using the scientific method.

Four-Year Plan

This Sample Four-Year Plan is a tool to assist students and their advisor(s). Students should use it—along with their DARS report, the Degree Planner, and Course Search & Enroll tools—to make their own four-year plan based on their placement scores, credit for transferred courses and approved examinations, and individual interests.

Students must complete at least 120 total credits to be eligible for graduation.

Sample Plant Pathology Four-Year Plan—Plant-Microbe Biology Focus Area

First Year
FallCreditsSpringCredits
CHEM 1034CHEM 1045
MATH 2215Humanities Course3
First Year Seminar1MATH 2224
COMM A or Elective3Electives3
 13 15
Second Year
FallCreditsSpringCredits
CHEM 3433ZOOLOGY/​BIOLOGY/​BOTANY  152 or BOTANY 1305
ZOOLOGY/​BIOLOGY/​BOTANY  1515CHEM 3442
Humanities Course3CHEM 3453
Social Science Course3Ethnic Studies Course3
 14 13
Third Year
FallCreditsSpringCredits
PL PATH 3004PHYSICS 1044
PHYSICS 1034PL PATH/​BOTANY  3324
Electives6GENETICS 4663
International Studies Course3Electives6
 17 17
Fourth Year
FallCreditsSpringCredits
MICROBIO 3033BOTANY 5003
MICROBIO 3042PL PATH 5903
Plant Pathology Core Elective3Plant Microbe Electives5
Electives6Electives6
 14 17
Total Credits 120

Advising and Careers

Advising 

Students in plant pathology are assigned to both a professional staff advisor and one of our faculty advisors. Current faculty advisors include:

Caitilyn Allen
Jeri Barak (lead faculty advisor)
Amanda Gevens
Mehdi Kabbage
Paul Koch
Richard Lankau

Details can be found on our faculty webpage. Undergraduates in plant pathology are strongly encouraged to consult with an advisor before enrollment for the upcoming term. 

For more information about the Plant Pathology major or the department in general, please see the contact information on this page. Students with questions regarding Plant Pathology lab positions — both paid and unpaid — should contact Professor Jeri Barak.

Career Opportunities

Please visit our Internship & Job Resources page for information on career opportunities available to plant pathology students. For more information on other academic, co-curricular, financial aid, and career services available to plant pathology students, please visit the CALS Career Services page. Students in the major are welcome to make an individual appointment with an advisor to discuss career-related topics such as career exploration, search strategies, graduate school, and review of application materials (resume, CV, letters, etc.).

Plant Pathologists from all educational levels are able to seek employment in a variety of areas. Some examples include:

  • colleges and universities
  • biotechnology companies
  • state and federal agencies
  • international agricultural research centers
  • nurseries, greenhouses, and garden centers
  • non-governmental organizations
  • golf courses, public parks, and landscape maintenance companies
  • diagnostic laboratories
  • seed, plant production, and tissue culture companies
  • a variety of private consulting firms

If you would like to know more about what is Plant Pathology and how an undergraduate education in Plant Pathology can help you make an impact on the world around you, please check out the “Plant Pathology: taking you further than you ever imagined” video from the American Phytopathological Society.

People

Faculty

Ahlquist, Paul
Allen, Caitilyn
Barak-Cunningham, Jeri
Bent, Andrew
DiGennaro, Peter
Gevens, Amanda (chair)
Gluck-Thaler, Emile
Holland, Leslie
Handelsman, Jo
Kabbage, Mehdi
Koch, Paul
Lankau, Richard
Rakotondrafara, Aurelie
Silva, Erin
Solís-Lemus, Claudia
Smith, Damon

Affiliated Faculty

Ane', Jean-Michel (Bacteriology)
Groves, Russell (Entomology)
Havey, Michael (Horticulture)
Keller, Nancy (Medical Microbiology & Immunology)
Pringle, Ann (Botany)
Whitman, Thea (Soil Science)
Yu, Jae-Hyuk (Bacteriology)

Faculty Associate

Hudelson, Brian

Wisconsin Experience

Undergraduates majoring in plant pathology at UW–Madison will find an inclusive, welcoming community where professors know their students and are able to provide guidance based on students’ specific academic and career goals. There are numerous opportunities to conduct research with internationally prominent faculty and to take part in the Wisconsin Idea, whereby faculty and students extend the knowledge developed at the university to stakeholders in Wisconsin and beyond for the betterment of society.

Internships

Plant Pathology offers paid research internships during summer term, as well as paid or credit-earning research opportunities year-round. Undergraduates get a firsthand view of how research is conducted and what it means to be a professional scientist. For more information on internship opportunities available to plant pathology students, please visit our Internship & Job Resources page.

Research Experience

Nearly all Plant Pathology undergraduates participate in field- or lab-based research with a professor. Research in the department has a long tradition of supporting grower needs. Many faculty are using the plethora of research tools available, including molecular biology and systematics, to answer questions that are directly applicable to grower groups. Please visit the department's Research page for additional details on research activities in Plant Pathology.

Student Organizations

By joining the Plant Pathology Undergraduate Club, majors get to know their fellow students outside the classroom. The department provides resources for students to meet experts who lead discussions on a range of topics including cutting-edge research and technology, career options, and how to apply and compete for jobs.

Undergraduate students are also welcome to join What's Eating My Plants (WEMP). This organization, founded in 2010 by Plant Pathology graduate students, is dedicated to bridging the gap between the University and the greater Madison community. The students visit Family Science Nights at schools, community centers, and Saturday Science at the Wisconsin Institute for Discovery (WID) throughout the year.

Global Engagement

Plant Pathology students interested in studying issues on a global scale are encouraged to enroll in Plant Path 311: Global Food Security, which explores drivers of food insecurity: barriers to food production (pests, land availability, climate), barriers to food availability (politics, price, biofuels), and a greater need due to population growth. The Plant Pathology program is an excellent choice for students wishing to participate in a study abroad experience. Students can find more information about study abroad on the CALS study abroad advising page.

Community Engagement and Volunteering

The UW–Madison Division of Extension provides statewide access to the resources and research of the University of Wisconsin, other universities, and the United States Department of Agriculture so that the people of Wisconsin can learn, grow, and succeed at all stages of life.  The UW–Madison Division of Extension carries out the tradition of the Wisconsin Idea – extending the boundaries of the university to the boundaries of the state. UW–Madison Extension and outreach activities support educational programs for farmers, businesses, communities, families, and youth. More details can be found on the department Extension & Outreach page.

On campus, the Morgridge Center for Public Service provides resources to help students connect with volunteer opportunities based on their interests and goals.

Resources and Scholarships

Department scholarships are available to Plant Pathology students and fellowships are available to support research work with a professor. Students across the College of Agricultural and Life Sciences receive more than $1.25 million in scholarships annually. Learn more about college scholarships here.