Which of the following best describes the treatment for crown rot?

The treatment for crown rot primarily focuses on addressing the excess moisture that contributes to the condition. The correct choice emphasizes the importance of managing soil moisture levels, which is critical in preventing disease development and promoting plant health. By removing wet soil and excess turf, you effectively reduce the humidity and moisture around the plant's crown, creating a drier environment that is less conducive to rot and fungal development.

Crown rot is often exacerbated by poor drainage or overly saturated conditions. By alleviating these factors, you assist in improving aeration around the roots and crown, which further helps in recovery and prevents future occurrences of rot. This approach addresses the root cause of the problem directly, ensuring a healthier growing environment for the plant.

Other options do not effectively target the primary issue associated with crown rot. Increasing irrigation frequency can worsen the problem by adding more moisture to an already saturated area. Regular applications of chemical fungicides may provide temporary relief but do not address the underlying issue of soil moisture. Increasing soil pH is generally unrelated to managing crown rot and does not contribute to resolving the immediate problem.