1. Welcome to Our New Graduate Students: Theresa and Louceline!

    Jun 15, 2020

    Welcome to our two new graduate students for fall of 2020!

    Theresa will be persuing her Master's degree and Louceline will be working towards her Ph.D. A little bit about each student and was their research will be can be found below.


  2. Wade

    Congrats Jordon Wade on publishing expansive soil health study!

    Jun 12, 2020

    Former Culman lab PhD student and postdoc, Dr. Jordon Wade just published an important study to help validate some important assumptions we hold about the value of soil health in agriculture. Jordon aggregated research corn N rate trials across the Midwest to ask the question "do improvements in soil health translate into increases in yield?". The answer is a pretty straightforward yes. Increases in soil health can help mitigate the risk of underfertilizing with N.

  3. Congratulations to Leo Deiss for Advancing IR Methodology!

    Jun 8, 2020

    Establishing best practices for diffuse reflectance infrared Fourier transform spectroscopy (mid-DRIFTS) of soils is a high priority to enable robust soil testing. Our aims were to determine suitable experimental parameters to optimize analytical and predictive applications of high-throughput mid-DRIFTS in soil analysis. Based on a series of three papers that evaluated A) sample preparation, B) instrument setup for spectra acquisition, and C) data processing (chemometrics), we provide recommendations on how to improve mid-DRIFTS efficiency to measure soil properties.

  4. What to do about Nitrogen Fertilizer in Corn?

    Jul 8, 2019

    The most recent Agronomic Crops Network C.O.R.N. newsletter contains an article addressing common questions about nitrogen (N) fertilizer applications in corn. The article addresses concerns due to persistent rain this year causing concern about N loss from denitrification and leaching. Common questions being asked are addressed and include:

    Do I need additional N?

    What tools can help me determine if I need additional N?

    How late and how much N should be applied?

    What is the best N source to use?

    The full article can be accessed HERE

  5. New fact sheet reporting relationships between soil test extractants published by Culman Lab

    Jun 18, 2019

    The Soil Fertility Lab has published a fact sheet reporting their results investigating the relationships between commonly used soil test extractants in the Tri-State Region. The fact sheet reports findings for soil samples collected in Ohio and Indiana from a diverse range of fields. Soils were tested for Mehlich-3, Bray-P, and ammonium acetate extractable nutrients for phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg). The summary of findings can be found in the full news article and the fact sheet can be found HERE

  6. 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!

  7. 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!

  8. 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 

  9. Soil Fertility and Nutrient Management in Hops

    Feb 4, 2019

    The Soil Fertilty Lab is looking for hop growers to participate in our new research project. Details on the project, as well as cooperator involvement, can be found here. This is a two-year study that we hope to expand upon with further research after completion. Inputs from growers, as well as our advisory committee consisting of select regional growers, will form future research questions. We look forward to establishing a strong connection with the hop growers of the North Central region and working with you to answer questions and establish best practices in hop soil fertility and nutrient management. 

  10. Congratulations, Phoo Pye Zone!

    Jan 31, 2019

    In December 2018, Phoo Pye Zone successfully defended her Masters of Science from the School of Environment and Natural Resources. Her research focused on evaluating the response of soil test values and fertilizer on corn, soybean, and wheat tissue levels. Phoo plans on publishing this work in both peer-review and factsheets. Congratulations, Phoo!