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Agronomic Crops Network

Ohio State University Extension


Sudden Death Syndrome of Soybean in Ohio

We are finding fields in Ohio affected by sudden death syndrome (SDS). These symptoms are showing up earlier than normal. SDS is caused by the fungal pathogen Fusarium virguliforme. This species is the most prevalent in the region, however, other Fusarium species can cause SDS.

With support and funding from Ohio Soybean Council, we will process soybean plants with SDS symptoms from fields in Ohio to: 1) Determine the species and genetic diversity of Fusarium associated with SDS in Ohio, and 2) Determine the fungicide sensitivity of isolates in the culture collection. To successfully achieve these goals, we need your help. 

If you are seeing SDS symptoms, we encourage you to submit a sample to the Soybean Pathology and Nematology Laboratory in the Department of Plant Pathology at The Ohio State University in Columbus (read more HERE). If it is SDS, we want to determine what Fusarium species is the causal agent. To submit samples, dig out three to five symptomatic plants (including roots), placed them in a plastic bag, complete the SDS submission form, and submit them to our lab. Do not hesitate to contact your extension educator or us if you have any questions. Read more about SDS and other mid-season diseases of soybean HERE.

Mail your samples to:

OSU Soybean Pathology and Nematology Lab 
Attn: Horacio Lopez-Nicora, Ph.D.
110 Kottman Hall
2021 Coffey Rd.  
Columbus, Ohio 43210

Crop Observation and Recommendation Network

C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.