This is referred to as melting out. Fertilize according to local recommendations and soil tests. Increase light penetration and air movement to the turfgrass area and speed drying of grass by selective pruning of trees and shrubs. Fungicides can also be used, but a full-season spray program is needed. Spraying every 10 to 14 days is impractical in most situations.
Cultural controls are generally the most practical.
Tomato Blights Wet spring and early summer conditions have favored the development of fungal blights of tomato. Two common foliage diseases of tomato are early blight, caused by Alternaria solani, and Septoria blight, caused by Septoria lycopersici. Lower leaves are usually attacked first. Septoria causes smaller brown spots that eventually turn light tan or gray in the center with a dark border. Both diseases cause foliage to eventually turn brown and die.