Leaf spots may be peppered with tiny black dots. Lesions on stems and petioles are dark elongated spots. Infected leaves and petioles yellow and die. Disease Management Remove plant debris from last season or till it into the soil. Buy healthy transplants free of leaf spots.
Plant tomatoes to a different site in the garden each year.
Begin a fungicide spray program at bloom and continue through harvest. Read the product label before application to determine how long the waiting period is between treatment and harvest. Apply water at the base of plants instead of with a sprinkler. Early Blight Figure 2. Early Blight Figure 3.