​​Soybean Cyst Nematode: Heterodera glycines Introduction and Biology (Part 1)

November 2007 | 8 min., 27 sec.
by Gregory L. Tylka
Iowa State University
https://doi.org/10.1094/GROW-SOY-11-07-001

Summary

The soybean cyst nematode (SCN) is a very widespread and damaging pest of soybeans in North America. And although SCN is widely known as a serious yield-reducing pest, many fields infested with the nematode go undiagnosed. SCN can drastically reduce soybean yields if not detected when population densities are low. In this presentation, the biology and life cycle of SCN are described. The various symptoms caused by SCN are explained and illustrated, and specific scouting guidelines are presented. Finally, various SCN management options are discussed. This presentation can be viewed in three parts. Part 1 offers an introduction to the soybean cyst nematode and its biology, Part 2 covers SCN scouting, and Part 3 discusses management of the soybean cyst nematode.

About the Presenter

Gregory L. Tylka​ Gregory L. Tylka is a professor in the Department of Plant Pathology at Iowa State University. He has been with the university since February 1990. Tylka earned his BS and MS degrees in biology from California University of Pennsylvania and his PhD in plant pathology from the University of Georgia. Virtually all of the research and extension work done in Tylka's program at Iowa State University focuses on soybeans and the soybean cyst nematode (SCN). Currently, his research investigates the effects of soybean resistance on SCN population densities and soybean yields. Research also is underway, in collaboration with other scientists, to study the interactions of SCN with other soybean diseases and with the soybean aphid. Since 2004, Tylka has served as coordinator of the Iowa State University Corn and Soybean Initiative, a unique effort providing research-based corn and soybean production information to growers through formal partnerships with agribusinesses throughout Iowa. Tylka also has assisted with training certified crop advisers and other agribusiness professionals in Iowa on identification and management of Asian soybean rust.​

Contact Information:
Email: gltylka@iastate.edu

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