What sign indicates head blights and molds on sorghum?

The correct answer is indicated by the presence of pink, gray, white, or black mold growth, which is a characteristic symptom of head blights and molds affecting sorghum. These molds are the result of various fungal pathogens that thrive under specific environmental conditions, particularly in humid or wet weather. The color and type of mold can help in identifying the specific fungus involved, which is essential for effective disease management.

In the context of sorghum, observing these mold colors on the heads of the plant suggests a significant issue that may lead to reduced yield and quality due to the pathogens affecting the kernels. The visual identification of these mold growths enables growers to take appropriate measures, such as the application of fungicides or adjustments in cultural practices, to control the disease and mitigate its impact.