Description: Black
lesions occur on lower leaves and stems. The entire lower portion of the stem
may be blackened and brittle. Heavily infected leaves turn yellow and drop.
Location: Spring black stem occurs throughout Ohio.
Time of Attack: Infection takes place primarily during cool, wet periods
in the spring and fall. Most damage occurs in the spring, prior to the first
harvest.
Management:
· Monitor soil pH and fertility
· Frequent cutting