What is the first symptom of infection by Pythium blight?

The first symptom of infection by Pythium blight is characterized by spots in the turf that range from 1 to 12 inches in diameter, accompanied by soft and slimy leaves. This distinctive appearance is indicative of the pathogen's attack, where it causes the leaves to decay and take on a mushy texture. The formation of these water-soaked lesions occurs in favorable conditions, such as warm, humid weather, making it a clear sign of Pythium blight presence. The initial symptoms reflect the pathogen's rapid spread, where it thrives in moist environments, leading to significant turf damage if not addressed promptly. Recognizing these symptoms is crucial for early intervention and effective management of the disease.