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By Greg Tylka, Department of Plant Pathology and Microbiology

Since 1990 the Iowa State University SCN-resistant Soybean Variety Trial Program has evaluated the agronomic performance and nematode control provided by hundreds of soybean varieties advertised as resistant to the soybean cyst nematode (SCN). The work is funded by the soybean checkoff through a grant from the Iowa Soybean Association.