Plant and Soil Sciences Graduate Program

One graduate program. Two concentrations. Three degree options.


Plant Science
involves course work in plant molecular biology, plant breeding, plant pathology, plant tissue culture, horticulture, crop science, plant anatomy and/or plant physiology with thesis research in one of those areas.

Soil Science involves course work and thesis research in soil chemistry, soil fertility and management, soil physics, soil microbiology and biochemistry, environmental microbiology, soil and water quality and soil formation and biogeochemistry.

Degree options:

  • Ph.D. dissertation degree
  • M.S. thesis degree
  • M.S. non-thesis degree (full- or part-time)
Latest News
  • Research presentation competition participants pose for a photo.

    Plant pathology students organize UD’s first Carroll Symposium

    February 11, 2025 | Written by Molly Schafer
    Graduate students Lauren Irwin, Shiv Singla and Adelaide Mullin planned and organized the University of Delaware’s first Carroll Symposium. The student-led event was possible thanks to a generous donation made in honor of UD’s Bob Carroll, emeritus professor. The event, which included a research presentation competition, also served as a reunion for UD’s Bob Carroll and the plant pathology community.
  • Deb Jaisi’s phosphorus research earns national award from the Soil Science Society of America

    January 31, 2025 | Written by Dante LaPenta
    Deb Jaisi has received the 2024 Jackson Soil Chemistry and Mineralogy Award from the Soil Science Society of America, which honors advanced soil chemistry and minerals research. In the Environmental Biogeochemistry Lab, Jaisi investigates phosphorus, a critical element for plant fertilizers and a notoriously scarce nutrient.
  • Greener turf

    January 24, 2025 | Article by Nya Wynn
    Charanpreet Kaur, who completed her doctoral degree in plant and soil sciences, conducted research of beneficial bacteria in turfgrass systems. Her research has awarded her the 2024-25 Encompass Fellowship.

Application process update:  Due to coronavirus (COVID-19), the program of PLSC is waiving the GRE requirement for our graduate program.  If you wish to apply without a GRE score, please enter a future GRE exam date into the application.  It need not be a legitimate exam date.  Entering a future exam date causes the system to finish your application and send it on to our review committee where it will receive full consideration.