Florida Agricultural Experiment Station


which the disease is disseminated is not known but the fungus is
capable of living for several years in the tissues of an attacked
tree.
 CONTROL OF SPHAEROPSIS KNOT
 In Jamaica, where the disease has proved quite troublesome,
it has been kept under control by cutting out all affected parts of
the tree. This method is fairly successful where attacks are
slight and confined to the smaller branches and twigs. The af-






























 Fig. 46.-Damping-off of citrus seedlings. Note the lesions at the
 ground line.

fected parts should be cut off several inches below the lowest gall
so as to be sure to remove all infected tissue. Removing the
affected branches probably will suffice for the control of this
disease in Florida.