Deb Jaisi


  • Postdoc – Yale University, New Haven, CT, 2010
  • Ph.D. – Miami University, Oxford, OH, 2007
  • M.S. – Asian Institute of Technology, Bangkok, Thailand, 2003
  • M.Sc. – Trichuvan University, Kathmandu, Nepal, 1998

Current Courses

  • PLSC445/645 – Biogeochemical Cycling of Nutrients (offered every other Spring semester: 2012, 2014, 2016)
  • PLSC467 – Environmental Forensics and Society (offered in each Spring semester: 2016, 2017, 2018)


Disciplinary roots of the research activities conducted in my research team consist of studying the biogeochemical cycle specific to phosphorus in soils, sediments, and waters. Its applications are interdisciplinary and span in three fronts: phosphorus as i) an essential element for all living beings (a nutrient), ii) as a major environmental contaminant (a pollutant), and iii) a biocidal agent (e.g., a herbicide). Our research is carried over a trillion-fold scale range, from chemical bond formation/cleavage to micro-macro scale processes in soil and sediment and to landscape and ecosystem processes. The ecosystem scale research seeks to address questions on source, sink, transformation, and internal cycling of phosphorus in terrestrial and coastal environments.

Professional Activities

  • Member, Sigma Xi Society
  • Member, American Geophysical Union
  • Member, Geological Society of America
  • Member, Soil Science Society of America

Contact Information
Deb Jaisi

Associate Professor

Plant and Soil Sciences
160 Townsend Hall

Newark, DE 19716
Phone: (302) 831-1376
Fax number: (301) 831-0605