Zeroing in on Large Patch

Here in the Southeast, most turf managers consider zoysiagrass a hardy, easily maintained turfgrass for use on home lawns, commercial turf areas and — of course — golf course fairways. Since zoysiagrass is drought tolerant, grows in any type of soil and requires minimal mowing, it’s often an attractive alternative to bermudagrass.
But zoysiagrass does have its downside. It is particularly susceptible to a disease commonly known as Large patch’ — caused by a strain of Rhizoctonia solani. Environmental conditions favoring Large patch development are cool soil temperatures and wet conditions. Visual symptoms can occur in the fall and spring as circular, discolored patches that expand over time.