Bruce Potter, Senyu Chen, Phil Glogoza and Ryan Miller
The soybean cyst nematode (SCN) is a serious pest of Minnesota soybean and has been managed with crop rotation and soybean varieties with resistance to SCN. SCN populations virulent on (able to infest, reproduce on and damage) SCN resistant soybeans are increasingly widespread. Virulence on the PI 88788 resistance source is the most common, but increasing numbers of field populations virulent on Peking or both PI88788 and Peking resistance sources have been observed (Chen, et al. 2011). Therefore, effective chemical or biological complements to resistant varieties would be helpful to soybean growers’ SCN management programs.