Necrotic ring spots are caused by a fungus (ophiosphaerella korrae) that attacks the roots of grass. In Utah, the disease is particularly damaging to cool season grasses such as Kentucky bluegrass. Shaded areas of lawn are usually most vulnerable to this fungal disease; however, necrotic ring spots can occur in any area of lawn. Signs

SPECIAL WATERING AND CARE INSTRUCTIONS TO HELP IN THE CONTROL OF NECROTIC RING SPOT (NRS) If your lawn has Necrotic Ring Spot problems, changing the way you water your lawn has been helpful in aiding to control the disease. Watering daily for shorter periods is necessary to help control Necrotic Ring Spot (N.R.S.) Ring to