Root Rot of Peas C t 
Root rot of peas, variety Early Market, caused by Aphanomyces euteiches occurring in a field 
at Hanover, Md., May 21, 1920. The plant at the left with white clean stem and turgid 
roots is not infested. The three remaining plants show increasing degrees of disease pro¬ 
gressively toward the right. The plant at the extreme right shows the first symptoms of 
disease above ground in the shriveled lower leaf 
