Bollworm (a.k.a. corn earworm) moth traps are not real high but certainly higher than last year, and we have been catching moths for several weeks. I suspect we will not have much difficulty finding larvae in the ears of field corn during the next few weeks.  There is really nothing that can be done to economically prevent this, but it may indicate some future probelms in soybean and cotton.  I am a little concerned give the late planted soybean crop, as later planted beans are typically at higher risk to corn earworm infestations.

Link to moth trapping data (Excel file)

Southwestern corn borer moth catches have dropped considerably, suggesting as usual that we are right between generations when much of our corn is beginning to tassel.  In fields at Jackson and Milan, all indications are that half-grown larvae are already in the stalks.  Thus, it will be 2-3 weeks before we really get into the second generation moth flight.  It will too early to spraying non-Bt corn for the second generation in most areas (and mostly too late for the first generation).  Keep the timing of the moth flight in mind when deciding if insecticide is needed when applying foliar fungicides to non-Bt corn.  They can vary by a week or more across the state.  Also remember that corn borer infestations are very sporadic.  Serious infestations are usually in areas that traditionally grow a fair amount of non-Bt corn.  We seldom see damaging infestations in non-Bt corn grown in the central and southern counties of West Tennessee.  Pheromone traps for moths are a good predictor of field infestations, but you really need 2 or 3 traps near your non-Bt fields to judge what is happening locally.