Delay nitrogen fertilization during periods of rapid development of Large Patch of Zoysia. Avoid deficiencies in other essential nutrients, especially potassium. Soil nutrient levels can be checked with a soil test. Perform these activities once the soil and thatch have warmed up and the disease is no longer active. Core aerification can help reduce soil compaction and allow improved water and air movement into the soil.
Power raking or dethatching can help remove thatch in a lawn.
At press time, no information was available on resistance of Zoysiagrasses to Large Patch Disease. Fungicidal Application Fungicides can help control Large Patch of Zoysia. The timing of spray application of the fungicide is very important. Ideally, fungicides should only be applied to areas which are likely to have a reoccurrence of the disease. Areas that were infected in the previous spring or fall are more probable locations for the disease to occur than areas that were not previously infected.