The first flight of the European corn borer continues; however, the number of moths reported from several areas of the state suggests that the first-generation infestation may be very low. Ron Hines, senior research specialist, Dixon Springs Agricultural Center, indicates that he has been unable to capture European corn borer moths in his pheromone traps. On June 8, I observed very minor shot-holing caused by European corn borer larvae near Arenzville, located in Cass County. Mike Roegge, crop systems educator, Adams/Brown Extension Unit, observed on June 8 first-instar European corn borer larvae on "thigh-high" corn in Pike County. Overall, Mike indicated that not much of an infestation appeared to have established as of yet.|
Although European corn borer moth numbers appear to be down, Ron Hines indicates that the southwestern corn borer moth flight remains impressive. Ron reported on June 12 that he has been capturing approximately 90 moths per day in Massac County since the June 1 peak. Based on Ron's trapping records, this year's capture of southwestern corn borer moths for Massac County is approximately nine times greater than last year's moth flight.
If you detect significant infestations of European corn borers in your scouting efforts, please let us know. We would be happy to report your findings.--Mike Gray