While herbicide-resistant weeds have been in the spotlight, soybean cyst nematode (SCN) continues to silently spread throughout soils in all major soybean-producing states.

Since its arrival in 1954, growers have managed this No. 1 soybean pest by planting SCN-resistant varieties and rotating soybeans with non-host crops such as corn. However, those practices alone no longer effectively manage SCN.

More than 95 percent of soybean varieties...