Welcome to the Soil Fertility Lab's website. Our work focuses on determining timely and efficient use of fertilizers, developing farmer-friendly soil health tests, and understanding how long-term management strategies can build organic matter and soil productivity. We engage and work collaboratively with farmers, crop consultants, and educators on a wide variety of soil fertility and management issues.


  1. The Soil Fertility Lab has two new graduates!

    Apr 30, 2019

    We are excited to announce that the Culman Lab has two new graduates! Congratulations to Jordon Wade and Noely Gonzalez-Maldonado on completing their graduate degrees. Jordon's PhD dissertation, entitled "Soil Health and Nutrient Dynamics in Agroecosystems of the Midwestern US", focused on elucidating how soil health measurements influence and are influenced by fertilizer applications. Noely's MS work, entitled "Evaluating the Effects of Long-Term No-Till and Crop Rotations in Soil Health and Corn Productivity, focused on determining the effects of half a century of continuous no-till and crop rotation on soil health and its relationship with crop productivity. Both theses will be made available on our website soon!

  2. EVENT: Conservation Tillage and Technology Conference

    Feb 20, 2019

    Have you registered for this year's Conservation Tillage and Technology Conference yet? The conference will be held from March 5th to the 6th at the McIntosh Center in Ada, Ohio. Sessions include corn university, soybean school, cover crops, nutrient management, soil and water quality, precision ag, soil health, on-farm research and decisions, conservation planning, and no-till systems. OSU speakers include: 

    Doug Jackson-Smith (Professor, SENR), Caroline Brock (Senior Research Associate) Steve Culman (Asst. Professor, SENR), Will Osterholz (Postdoc, SENR), Doug Doohan (Professor, HCS), Andrea Leiva Soto (PhD student, HCS) Louceline Fleuridor (MS student, HCS) Christine Sprunger (Asst Professor, SENR) Subbu Kumarappan (Assoc Professor, ATI)

    Details on how to register can be found here

    We hope to see you there!

  3. Now hiring!

    Feb 12, 2019

    The Soil fertility Lab is looking for a summer intern interested in agroecology field crop research and soil health to assist with a project investigating the long-term effects of different tillage and crop rotation practices on soil properties and corn, soybean, and hay productivity. The student will synthesize data to answer questions related to a topic of interest chosen by them. In addition, they will be provided field and lab opportunities working with a team of postdocs, grad students, and technicians. A stipend is provided for this position. 

    Full details, including how to apply, can be found here