What environmental condition can exacerbate large patch disease?

Large patch disease, caused by the fungus Rhizoctonia solani, is particularly influenced by excessive nitrogen application in turfgrass management. When nitrogen levels are too high, it promotes lush, dense growth in the grass, but this condition can create an ideal environment for the disease to thrive. The excess nitrogen stimulates rapid growth, resulting in more succulent tissues that are more susceptible to fungal infections, including large patch disease.

In addition to that, high nitrogen levels can disrupt the balance of nutrients in the soil, leading to further stress on the grass and making it even more vulnerable to disease pressure. Therefore, managing nitrogen levels is critical in preventing the onset and spread of large patch disease and maintaining healthy turf.

Humidity, dry spells, and cold temperatures can have certain roles in the development of diseases in general, but they do not directly correlate with the specific exacerbation of large patch disease in the same way that excessive nitrogen does. Maintaining balanced nutrient levels is essential for promoting overall plant health and resilience against diseases.