In Minnesota, corn earworm (CEW) is primarily a pest of sweet corn. Each year, CEW migration is variable, making it essential to monitor adult population levels with either a pheromone or a blacklight trap. We have found that the pheromone trap provides consistent results in the Upper Midwest region. View current trap catch data on the CEW page on VegEdge.
European Corn Borer
European corn borer (ECB), a historical pest of both sweet corn and field corn, has seen a dramatic population decrease with the advent of Bt corn. Despite these low population levels, you should continue to monitor ECB using a blacklight trap to ensure that economic infestations aren't present. The ECB page on VegEdge provides both current and historical data.
Migrating black cutworm (BCW) moths are one of the earliest pests that we detect in Minnesota. Damage from black cutworm infestations can be predicted, in part, from sex pheromone trap captures and degree-day accumulations. For historical and current BCW moth counts, visit the Black Cutworm Reporting Network.
Spotted Wing Drosophila
Since its first detection in 2012, spotted wing drosophila (SWD) has been a significant pest of berry crops in Minnesota. Because SWD lays eggs directly into fruit and develops rapidly, it has been a challenging pest for fruit growers to manage. Results of trap monitoring can be found on the SWD page on FruitEdge.