Identifying and Distinguishing Seedling and Root Rot Diseases of Sugar Beets

Fig. 27. Aphanomyces-infested field at harvest (irregularly distributed roots with crowns of varying height) and the severely scarred and distorted roots broken off at ground level after defoliation (inset).



Image from Plant Health Progress article:
Identifying and Distinguishing Seedling and Root Rot Diseases of Sugar Beets