Early Season Insect Activity Raises Crop Concerns for Farmers

By Andi Anderson

The 2026 field crop season has started with increased insect activity across many regions. Changing weather conditions have encouraged the movement of pests, especially moths, into crop-growing areas. Agricultural experts are monitoring these developments to guide farmers in managing early-season threats.

Recent updates to crop management guides now include new insecticide options for corn and soybean production. These updates aim to provide farmers with more tools to control pests effectively, including options suitable for organic farming.

One of the first pests observed this season is the alfalfa weevil. Its development is closely linked to temperature, measured through growing degree-days (GDD). In some regions, eggs are still developing, while in others, larvae have already begun feeding. Farmers are advised to monitor their fields closely, as feeding damage can increase with larval growth.

Experts strongly recommend field scouting instead of relying only on predictive models. Models help estimate pest stages but do not confirm their presence. A common method involves checking at least 100 plant stems and measuring feeding damage. If significant damage is found, action may be required. Early harvesting is often suggested in alfalfa fields to reduce pest damage and protect beneficial insects.

Another concern is the rise in true armyworm populations. These pests arrive through wind currents and lay eggs in grassy areas and wheat fields. Farmers should inspect wheat crops for larvae and feeding signs. Early detection can prevent major crop loss and stop pests from spreading to nearby fields.

Black cutworm moths have also been reported. These pests prefer laying eggs in fields with weeds. After weed control, farmers should monitor crop areas for plant damage, especially in corn fields. Larvae can move from dying weeds to young crops, causing serious harm.

Researchers are also studying damage caused by maggots and slugs. Farmers are encouraged to report affected fields to help improve pest management strategies.

Overall, careful monitoring, timely scouting, and proper crop management are essential to control early-season insect challenges and ensure healthy crop production.

Photo Credit: gettyimages-gabrielabertolini