What type of symptoms do fungal foliage diseases of grain sorghum typically exhibit?

Fungal foliage diseases of grain sorghum typically exhibit circular to elliptical spots on the leaves. This symptom is characteristic of infections caused by various fungal pathogens that affect sorghum. The circular to elliptical shape of the spots helps in identifying the type of disease and allows for a targeted approach to management and control.

These symptoms often arise as fungi infect the leaf tissues, leading to localized necrosis and the development of lesions. The arrangement and shape of these spots are crucial for diagnosis, as they can vary between different fungal species. Understanding the typical appearance of these symptoms aids growers in recognizing and responding to fungal infections early, thereby minimizing damage to the crop.