Soil Fertility Team


Steve Culman

Affiliated Faculty

Curriculum Vitae
Steve's Google Scholar Profile and ResearchGate Profile

Steve is a soil scientist and agronomist. He has a diversity of interests in soil health, soil fertility and nutrient management, perennial grain cropping systems and agroecology.







Leonardo Deiss

Visiting Assistant Professor

Leo's Google Scholar Profile

Leo works with ecology, agriculture, and soil science. He is a trained soil scientist and agronomist interested in understanding how soils function in a variety of ecological conditions to support management solutions and promote sustainable development goals.











Current Members



  Ben Robinson

Ben Robinson, Research Associate


Alyson Holzworth

Alyson Holzworth, Student Assistant

Alyson is an undergraduate student at Ashland University, studying environmental science, toxicology, and chemistry. Alyson has familiarity with solid-state synthesis, column chromatography, thin layer chromatography, gas chromatography, atomic absorption spectrometry, and UV-VIS. She previously interned at the OARDC and worked with water quality variability, field sampling within multiple agricultural fields, and soil samples. Alyson has also interned with The Ohio State University at Mansfield where she managed the campus Micro Farm, pinpointed vernal pools via GIS, managed inventory data and collection for the maple tree farm on campus, and sampled bee, butterfly, and vegetation plots. Alyson is very passionate about the environment and loves butterflies! She hopes to have fun while gaining experience with IR Spectroscopy and soil analysis applications at the Soil Fertility Lab!


Former Lab Members

Graduate Students

Brehm Pugliese Zone Gonzalez
Theresa Brehm
M.S. 2022
Jennie Pugliese,
M.S. 2017
Phoo Pye Zone,
M.S. 2018
Noely Gonzalez-Maldonado,
M.S. 2019
Wade Fleuridor    
Jordon Wade,
Ph.D. 2019
Louceline Fleuridor
Ph.D. 2022

Postdoctoral Researchers

Fulford Chaganti Hurisso Sprunger
Anthony Fulford
Extension Advisor,
University of California
Vijay Chaganti
PostDoc Researcher,
Texas A&M
Tunsisa Hurriso
Assistant Professor,
Lincoln University
Christine Sprunger
Assistant Professor,
The Ohio State University
Will Osterholz
Research Scientist,

Research Staff

Herman Gutierrez Manriquez Hoekstra Mann
Bethany Fortune
Lab Manager
Camila Gutierrez Manriquez
Research Scholar
Nicole Hoekstra
Research Associate
Meredith Mann
Research Assistant
Sharma Saeed Reynen Nyamai
Stuti Sharma
Research Assistant 

Muhammad Tariq Saeed
Visiting Scholar

Kenzie Reynen
Research Assistant
Priscilla Nyamai
Research Associate


Dygert Gingery  
Clay Dygert
Research Associate
Mason Gingery, Research Assistant  

Summer Interns

Faheem Ali (Case Western University),  Aista Sall (University of South Florida), Nakian Kim (Rice University), Otto Oppenheimer Lugo (University of Puerto Rico), Andrew Herzog (Ohio State), Samantha Wander (Ohio State), Noely Gonzalez-Maldonado (University of Puerto Rico), Madison Campbell (Ohio State).

Undergraduate Student Assistants

Grace Chapman, Caroline Bensman, Brady Linker, Cassian Filbrun, Nick LaRue, Ryan Hayes, Grant Ratliff, Cassie Reed, Annamarie Davies, Hannah Johnson, Lexie Popejoy, Brenden Tully, Jodi Livesay, Kristina Workinger.