European Corn Borer Low (08/12/21)
European corn borer (ECB) moth flight is ending. ECB Z-race moths (univoltine) were detected at 3 of the 13 trap sites and ECB E-race (bivoltine) at 1 of the 13 trap sites last week (Table 1). The ECB-Z and ECB-E-race moths peaked the week of July 2-8. The ECB-Z moths were 90% of the total trap catch last week, while ECB-E moths were only 10%. Corn crop stages were R2 to R3.
Extension Crop Protection Specialist
NDSU North Central Research Extension Center