Abstract
Soybean cultivars (G. max) were screened for reaction to 14 races of P. megasperma f.sp. glycinea. Eighty-five cultivars were found susceptible to all 14 races, whereas 37 were resistant to one or more races. Many plant-pathogen interactions resulted in reactions that were intermediate and could not be classified as either susceptible or resistant to P. megasperma f.sp. glycinea.