Black rot (Xanthomonas campestris pv.
campestris, X. campestris pv. maculicola, X.
campestris pv. raphani) – Seedborne
Radish is susceptible to all three pathovars of X.
campestris that can infect crucifers. This can be a
very serious disease of crucifers, including radish.
Symptoms vary greatly depending on the age of
the plant when infected, as well as the pathovar
and the particular strain of the pathovar.