Most seed companies offer varieties with good levels of resistance. Phytophthora root rot of soybeans . Both polygenic and major-gene resistances are available. Most seed companies offer Phytophthora -resistant varieties. Soybean cyst nematode .
Resistance is polygenic and there are some varieties with good white mold resistance.
Growth characteristics of different varieties also may influence their tendency to be infected. Iowa State University publishes results of white mold variety trials each year. Sudden death syndrome . Resistance is available in late-maturing varieties, but in maturity groups 0 to III, resistant varieties are not yet available. You should make disease resistance a priority if a potentially recurring disease was a problem in 1997 or 1998.