Most diseases that are found on lawns are caused by fungi. This is more likely to occur on lawns that are improperly watered (evening hours), cutting the lawn under 3 inches in length, mowing when the lawn is still wet, mowing with dull blades, or nitrogen deficiency. Weather conditions such as humid, high temperatures strongly influence the occurrence of disease. Lawn disease control requires extensive knowledge and years of experience. It is important to remember that, different types of lawn fungus cause different types of lawn diseases.
Rhizoctonia solani, (also know as Brown Patch) is the most common lawn disease which most homeowners have to deal with. Brown Patch is a fungus that normally occurs during the mid-summer months, and appropriate to its name, results in the formation of unsightly circular patches of brown, blighted turf.
Fungicide Applications should be applied to prevent spreading of lawn diseases. Our preventative program provides multiple applications to treat such issues, that are preventing your lawn from looking healthy and green. However, weather conditions favor lawn diseases. Do not irrigate lawns in late afternoon or evening if possible, this extends the number of hours the leaves remain wet and increases the likelihood of Brown Patch development. Irrigation or watering your lawn after midnight to mid-morning is preferable, these are the hours the turf would normally be wet from dew. Irrigation in these early morning hours does not extend the leaf wetness period and allows the turf time to dry throughout the day.
Disease development is favored by night-time temperatures above 60° F and by a high relative humidity and/or a thin film of moisture on the leaf surface. Brown Patch infestation can be very rapid, large blighted areas may develop within a 1-2 day period. In light attacks, only the leaves will be affected and the turf recovers within two to three weeks. However, when conditions are favorable for the disease to persist, the crowns or roots may also be killed.