What can contribute to the development of dollar spot?

The development of dollar spot, a common turfgrass disease caused by the fungus Sclerotinia homoeocarpa, is closely associated with the nitrogen levels in the soil. Low nitrogen availability can lead to weak, stressed grass, making it more susceptible to diseases such as dollar spot. Fertilizing with nitrogen helps strengthen the grass, improving its overall health and resilience against pathogens. Therefore, managing nitrogen levels in the soil is crucial for preventing the onset of this disease.

While excess water, cool temperatures, and high humidity can influence the overall health of turf and the prevalence of diseases, they are not as directly linked to the specific development of dollar spot as nitrogen deficiency is. High humidity can create a favorable environment for various turf diseases, including dollar spot, but it is often the combination of environmental stressors and nutrient deficiencies that plays a more significant role in the severity of the disease.