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Agronomic Crops Network

Ohio State University Extension


National Nematode Day

The SCN Coalition, with support from sponsors BASF, Bayer, Nufarm, and Syngenta, has officially declared October 2 as National Nematode Day. The main objective of this day is to raise awareness about the impact and threat that plant parasitic nematodes such as soybean cyst nematode (SCN), Southern root-knot nematode, lesion nematode, and reniform nematode pose to our crops.


Farmers and anyone interested in National Nematode Day can find more information and learn about it HERE, as well as at


With increased awareness comes action. The SCN Coalition strongly emphasizes that the first step in effectively managing SCN is to determine if it exists in your fields. The promotions for National Nematode Day will keep SCN at the forefront of farmers' and agronomists' minds, hopefully encouraging them to test their soils this autumn.


With funding from the Ohio Soybean Council and promoting the mission of The SCN Coalition, we will process up to TWO soil samples, per grower, to be tested for SCN, free of charge. We are excited to help with this task. Download and complete this Soil Sample Submission Form and 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



The SCN Profit Checker

In addition, The SCN Coalition has recently launched a new tool known as the "SCN Profit Checker Calculator." This tool provides an estimate of how much yield loss and profit decline can be attributed to SCN in a particular field. It can be accessed at By only requiring field inputs such as SCN egg count, percent sand, soil pH, and the SCN female index on PI88788 (most states, including Ohio, have provided a default female index), the tool calculates how much farmers are losing due to SCN infestation. This new tool from The SCN Coalition further emphasizes the urgency to test soils this fall.


In autumn, we strongly encourage growers to gather soil samples for SCN analysis. We hope you have a successful harvest and also celebrate National Nematode Day!

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.