Which of the following is a fungal foliage disease of grain sorghum?

The correct answer is a fungal foliage disease of grain sorghum, specifically gray leaf spot. This disease, caused by the fungus Cercospora sorghicola, manifests as lesions on the leaves that may eventually lead to leaf blight and can significantly reduce the yield and quality of the grain sorghum. The relationship between the fungal pathogen and host plant is critical, as the disease thrives under specific environmental conditions and can spread rapidly in dense plantings.

Identifying gray leaf spot is crucial for effective management practices, as early detection can lead to timely interventions, such as fungicide applications or agronomic practices aimed at reducing humidity and improving air circulation. Knowing this, practitioners must recognize the signs of gray leaf spot to implement appropriate control measures.

While bacterial streak, root rot, and Phytophthora blight are significant issues in various crops, they are not classified specifically as fungal foliage diseases of grain sorghum. Understanding these distinctions is important for effective pest control and crop management strategies.