Most plants outgrow flea beetle damage. See 5.592, Flea Beetles . A green to reddish horn protrudes from the hind end. They are voracious feeders, stripping leaves from stems and even eating unripe fruit. Pick them off by hand.
Symptoms become prevalent during the hotter months.
This disease produces brown to black, target-like spots on older leaves. If severe, the fungus also attacks stems and fruit. Affected leaves may turn yellow, then drop, leaving the fruit exposed to sunburn. Sanitation is the best control. Remove all diseased plant tissue on the ground, as the fungus overwinters on leaf debris.