Gray leaf spot hits a new location

During the past week, gray leaf spot continued on its expected path of destruction in California, and began to cause damage in the mid-West as well. But this aggressive disease also surprised everyone by making its first appearance on ryegrass fairways and roughs in a new location — Las Vegas, Nevada. According to Dr. Frank Wong of the University of California, the turf started showing symptoms of disease soon after a small summer shower (0.14 inches) on August 14. Temperatures…