In problem lawns substitute Kentucky bluegrass or fine fescues for perennial ryegrass or tall fescue. Avoid excess use of nitrogen in early spring. Avoid using common types of Kentucky bluegrass. Ascot, Princeton 104, Eclipse, Unique, Alpine, SR 2000, Bartita, Apex, Touchdown, Liberty, and Barblue. Overseed affected areas with perennial ryegrass.
Tall fescue is also resistant to necrotic ring spot.
Avoid piling snow in sensitive turfed areas. Continue mowing turf in fall until growth ceases. Do not apply excessive amounts of nitrogen in mid-fall. Creeping bentgrass and perennial ryegrass are more susceptible than Kentucky bluegrass and fine fescues. Do not grow Kentucky bluegrass in shaded areas.