What is indicated when white fecal pellets are found on grain heads and leaves?

The presence of white fecal pellets on grain heads and leaves is indicative of a feeding activity related to specific insect pests. In this case, sorghum webworms are known to produce these distinctive fecal pellets as they consume plant material. The pellets are a result of the webworms' digestive processes and are often found near or on the plant parts they infest.

Recognizing the signs of infestation, such as these fecal pellets, is crucial for integrated pest management, as it allows for timely intervention to minimize crop damage. Understanding the life cycle and feeding habits of sorghum webworms can also help in effectively managing their populations through appropriate control measures. Therefore, the identification of these fecal pellets serves as a valuable tool for diagnosing pest problems in crops.