Bulletin 208, Cucumber Diseases in Florida


WNW


 Fig. 17. Above: Cucumber fwuit showing surface lesions caused by
Bacterium lachrymans isolated from infected cucumber leaf. Lower: Same
fruit cut lengthwise through lesions, showing decay of interior parts caused
by this organism.

which were untreated, failed to germinate the same as the treated
seed.
 After the plants had developed several true leaves a survey was
made of 26 cucumber fields and the occurrence or absence of
angular leaf spot was recorded. In 18 of these fields the disease
was found. A closer check and interview with the growers re-
vealed the fact that none of the seed in these fields had been
treated. Of the eight fields found free of the disease, six had been
treated and two had not been treated. These data show the
wisdom of seed treatment for the control of this disease, and this
method of control is efficient, cheap, simple and quickly done.
 MOSAIC
 The true and exact cause of the mosaic disease is not definitely
known at the present time. It is known, however, that the infec-