Which time is ideal for monitoring fall armyworm infestations?

Monitoring for fall armyworm infestations is most effective during the night because these pests are primarily nocturnal, meaning they are more active and easier to spot when it is dark. During nighttime, they are more likely to emerge from their hiding spots in the soil and start feeding on grass and other foliage, allowing for better detection.

In contrast, daytime conditions are less favorable for monitoring these pests, as the fall armyworms tend to remain less active during the day, hiding from predators and avoiding bright light. Therefore, monitoring at dawn or during daylight hours would likely yield fewer opportunities to observe their activity. Additionally, while rainy weather could temporarily affect their behavior, it does not provide the same consistent opportunity for monitoring as the night does.

Thus, focusing monitoring efforts during the night maximizes the chances of identifying and managing fall armyworm infestations effectively.