What health condition of turfgrass is primarily associated with Brown Patch?

Brown Patch is a turfgrass disease primarily associated with high humidity and surface moisture conditions. This fungal disease thrives in environments where there is excess moisture, especially when combined with elevated temperatures. The high humidity levels create an ideal environment for the pathogens responsible for Brown Patch to proliferate, leading to symptoms such as circular brown patches on the grass that can expand rapidly under the right conditions.

In contrast, the other choices address different factors that affect turfgrass health but do not directly relate to Brown Patch. For example, excessive heat and aridity are more likely to stress the grass, making it susceptible to various stresses but are not a primary condition for Brown Patch. Low nitrogen levels can affect overall turfgrass health, leading to reduced growth or vigor, but they do not specifically contribute to the development of Brown Patch disease. Proper mowing techniques are essential for maintaining turf health and preventing certain issues, but neglecting them is not directly linked to the emergence of Brown Patch symptoms, which are specifically tied to humid environmental conditions.