Dr. Greg Tylka is a Morrill Professor in the Department of Plant Pathology and Microbiology at Iowa State University with extension and research responsibilities for management of plant-parasitic nematodes. The focus of Dr. Tylka's research program at Iowa State University is primarily the soybean cyst nematode (SCN), Heterodera glycines. Current research includes study of SCN-resistant soybean varieties, effects of nematode-protectant seed treatments, and the effects of cover crops on SCN biology and management. He also serves as director of the Iowa Soybean Research Center at Iowa State University.