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European Corn Borer Continues to Decline (07/29/21)

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European corn borer (ECB) moths continue to decline. ECB Z-race moths (univoltine) were detected at 9 of the 13 of trap sites and ECB E-race (bivoltine) at 3 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 97% of the total trap catch last week, while ECB-E moths were only 3%. Corn crop stages were VT to R1.

 

Summary of pheromone trap catches for European corn borer in ND Field corn, 2021

 

Veronica Calles-Torrez

Post-doctoral Scientist

 

TJ Prochaska

Extension Crop Protection Specialist

NDSU North Central Research Extension Center

 

Janet J. Knodel

Extension Entomologist