Dec 07, 2025  
2025-2026 University Catalog 
    
2025-2026 University Catalog

Agricultural and Biological Engineering, PHD

Location(s): West Lafayette


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About the Program


In Agricultural and Biological Engineering at Purdue University, internationally known faculty and highly motivated graduate students collaborate to advance scientific and engineering frontiers. Graduate education is the foundation of our quest to extend knowledge frontiers, and we offer opportunities for fundamental and applied research applying engineering principles to agricultural and biological systems. Our innovative research creates products and processes that address national and global challenges in food, energy, water, health, and the environment.

Biological systems are at the heart of solutions to problems related to the environment, energy, health, food, and sustainability. Biological engineering graduate students use tools, either through computation and modeling or instrumentation and biological and biochemical methods, to create and manipulate cells and cellular materials for a variety of applications relating to human, plant, and animal systems. This emerging field is expected to rapidly advance and open opportunities in biomanufacturing, biosensors, microbiome, biomaterials, human therapeutics, tissue and organ regeneration, computational genomics, high-throughput sequencing algorithms, bioenergy and biofuel production, bioremediation, and biodefense.

Program Website

Program Requirements


90 Credits Required

Required Courses (42 credits)


Minimum requirements for the Ph.D. program are 42 semester hours of graduate work, of which at least 21 semester hours must be beyond the MS level, and the completion of an acceptable research thesis that contributes to knowledge in the field of research specialization. This total can include 3 credits of ABE 59000, or an equivalent designation in another department.

Core Courses (6 credits)


If coming into the program with an MS, choose at least one course of graduate level (50000 or 60000 level) in any mathematics, statistics, quantitative data processing and/or data science course, totaling 3 credits. If coming into the program without an MS, choose at least two courses of graduate level, totaling 6 credits.

The three Graduate Seminars below are also required. ABE 69400 is generally taken in the first fall semester, ABE 69700 after the second year of graduate studies is completed, and ABE 69600 after the student has compiled enough research results to develop a departmental seminar on their work.

ABE/ASM or Concentration Courses (12 credits)


If coming into the program with an MS, choose at least two courses, totaling 6 credits. If coming without an MS, choose at least four courses, totaling 12 credits. See below for a list of concentrations which can fulfill remaining credit requirements.

Electives (24 credits)


If coming into the program with an MS, choose at least four courses, totaling 12 credits. If coming into the program without an MS, choose at least eight courses, totaling 24 credits.

Dissertation Research (48 credits)


Additional Information


Up to 21 semester hours may be waived from the requirements of a completed MS degree. These semester hours should conform to the Agricultural and Biological Engineering, MSABE or MSENGR or MS  requirements. Individual courses applied to the MS degree from Purdue University or another institution should not be listed in the Ph.D. electronic plan of study. Instead, the student’s major professor and/or Graduate Program Administrator will enter and approve the total number of semester hours applied from the MS.

Graduate Programs Disclaimer


  • The student is ultimately responsible for knowing and completing all degree requirements. Students should consult with their advisor/department for more information.
  • Not all graduate programs may be actively recruiting students and course modality availability may vary. 
  • Please refer to the Explore Graduate Programs website for a list of currently available graduate programs.
  • Transfer credit policy: Credits earned for graduate study at other universities (both domestic and international) may be applied toward an advanced degree. Only credit hours associated with graduate courses for which grades of B- or better were obtained will be eligible for transfer. Any additional conditions under which credit transfers may be made are determined by the various departments.
  • Comparative information about Purdue University and other U.S. educational institutions is also available through the College Navigator tool, provided by the National Center for Education Statistics, and through the U.S. Department of Education College Scorecard.

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