Soybean cyst nematode (SCN) remains the most economically damaging soybean pathogen in North America. If SCN levels are above damage threshold, significant yield reduction can often take place without visible symptoms.
To know if the nematode is present in a field, soil sample for SCN testing must be properly collected. The presence of SCN in a field, but most importantly, the SCN numbers will determine the best management strategy. Therefore, you need to test your fields to know your SCN numbers.
If you do not know you have SCN in your field, then fall is the best time to sample for SCN. If you know you have SCN but want to track its levels, then fall is the best time to sample for SCN. If you are planning to collect samples for soil fertility, a subsample can be used for SCN testing!
After harvest, a soil test will reveal if SCN is present and at what levels. Knowing your SCN numbers in fall will give enough time to plan for next year and to identify the best management practices [learn more on SCN management here and here].
We are excited to continue sampling soybean fields in Ohio to test for SCN with funding from the Ohio Soybean Council and The SCN Coalition. Fall is a great time to sample for SCN and we are excited to help with this task by processing up to TWO soil samples, per grower, to be tested for SCN, free of charge.
For more information on how to sample for SCN and where to send these samples, please visit our article: ‘Collect Fall Soil Samples for SCN.’ Additionally, BASF Agricultural Solutions is also offering free SCN testing kits throughout the month of October. Learn more about this opportunity here.
Growers will decide how they want to collect these samples, but we suggest collecting one sample from a low and one from a high yielding area. 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