Source: NCSU COOPERATIVE EXTENSION SERVICE, 7/10/18


Codling moth DD accumulations range from about 1480 in Henderson County to 1770 in Lincoln County, indicating that egg hatch of second generation codling moth is beginning in Henderson County and is about 40% complete in lower elevation orchards. Depending on population intensity, one or two applications of an insecticide effective against codling moth are recommended at this time. It should be noted that with a few exceptions, codling moth populations appear to be very low this year. There is minimal damage from the first generation and pheromone trap captures have been very low throughout the year.

In orchards using mating disruption for coding moth, insecticides targeting second generation codling moth are not necessary unless pheromone trap captures (orchard average per trap) exceeds a cumulative of 3 moths per trap over successive weeks when using CML2 or CMDA lures. In orchards that have used mating disruption for more than 3 or 4 years, insecticides are usually not necessary against the second generation. However, pheromone traps should be used to confirm low population pressure.
Emergence of first generation adult brown marmorated stink bug is now beginning in lower elevation orchards including Lincoln, Cleveland, and Burke Counties. First generation adult emergence in Henderson County is not expected for at least another two weeks.

In orchards where BMSB is a concern, an insecticide effective against this insect should be considered at this time. This includes most pyrethroid insecticides except Asana, the neonicotinoids Venom/Scorpion and Actara (35 day PHI), and the premix Besiege. The premixes Endigo and Voliam Flexi are also effective, but both have a 35 day PHI due to the thiamethoxam component.
Finally, in those orchards that had significant plum curculio damage earlier in the year, emergence of first generation adults occurs during July. These adults can feed on apples and peaches before seeking overwintering sites. Again, this is primarily a concern where a sufficient number of individuals completed development in fruit, which is usually very low in this region.

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