Northern Research and Demonstration Farm
The primary method of managing yield loss due to the soybean cyst nematode (SCN) is through the use of resistant soybean varieties. Most SCN-resistant varieties available in Iowa have the PI 88788 source of SCN resistance. There are concerns that over time, SCN will be able to overcome the PI 88788 resistance.
Iowa State University
Tylka, Gregory L. and Marett, Christopher C., "Comparing Yields of Soybean Varieties with Different Sources of SCN Resistance in Strip Trials" (2011). Iowa State Research Farm Progress Reports. 257.