In  2024, we experienced a significant resurgence of fall armyworm infestations, resulting in notable damage to both tall fescue and bermudagrass hayfields and pastures across North Carolina. These two perennial forages - tall fescue being a cool-season species and bermudagrass a warm-season one - were both impacted.

Below, I have included photos and a video taken in September 2024. This time of the year is particularly transitional; while bermudagrass remains green, its growth rate slows substantially due to cooler temperatures. Meanwhile, tall fescue begins its seasonal regrowth.

The level of fall armyworm damage observed in 2024 marked the end of a 3- to 4-year period with minimal reports of infestation and damage. This serves as an important reminder that even in year with little to no pest activity, regular monitoring remains essential to protect forage systems.

A list of recommended control products is available (here). It's worth noting that damage appears to be more commonly reported in hayfields (which are clipped) than in grazed pastures. However, if armyworm populations reach the treatment threshold of 3 larvae per square foot and pastures are not grazed promptly, significant damage can still occur.

•  Extension workshop in Pittsboro, NC, June 17, 6-8 pm (registration details here).
• Annual Forage Webinar Series: Webinar on July 15, 3-4 pm by Dr. Terri Billeinsen. Registration details can be found here.