Black Root Rot symptoms on Strawberry

Black Root Rot (various fungi): The exact cause of black root rot is unknown. It has been associated with several different organisms or conditions. The symptoms of black root rot are a black and woody root system. On healthy plants, the roots will appear white and pliable; however, diseased plants will have stiff roots. The feeder roots are partially or completely destroyed. The tip of the main roots will be destroyed. Fumigation has helped with this problem.
January, 1996