Dog urine burn spots that are over a week old will be surrounded by a dark green taller growing perimeter. If a burned area is thoroughly flushed with water in the early stage of damage some recovery may occur. Otherwise reseeding or sodding will be necessary. Diseases are almost always related to heat and moisture. The most susceptible months of the year are July, August, and September.
High humidity creates an ideal disease environment.
However, poor irrigation practices can also promote disease development. The longer moisture stays in the turf foliage the greater the disease risk. It is best to irrigate between 6 am and 8 am. Weather permitting, do not water established sod everyday. Also, reduce fertilization in the summer.