What timing of the year is most critical for preventing Necrotic Ring Spot?

The timing of late spring to early summer is critical for preventing Necrotic Ring Spot because this is when the turfgrass is actively growing and conditions are generally optimal for disease development. During late spring and early summer, temperatures and moisture levels create a conducive environment for the pathogen that causes Necrotic Ring Spot to thrive and spread.

In this period, cultural practices such as proper irrigation, nitrogen management, and mowing height can significantly influence the development of the disease. For example, too much nitrogen can lead to excessive top growth, which may create a more favorable environment for the disease. In contrast, maintaining proper mowing heights and avoiding stress on the grass can help mitigate the onset of Necrotic Ring Spot.

By focusing on management practices during this critical window, turf managers can significantly reduce the incidence and severity of this disease, as the pathogen is more likely to establish and cause damage when the weather conditions align with its lifecycle in this part of the year.