Description: Scab is seedborne, and it also survives in
the soil. Scab usually develops in warm weather after
midseason, when wet weather conditions exist. Spores
can spread over long distances when the air is moist.
Solution: As with
many diseases, it helps to plant cucurbits where other
cucurbits have not been planted for at least two years.
Plant in unprotected areas where breezes and sunshine
are not restricted. This will allow leaf surfaces to
dry more quickly, reducing infection. Begin applications
of Soap-Shield® Fungicidal Soap
before scab normally appears.