Source:  NCSU COOPERATIVE EXTENSION, 77/21


With the exception of the second generation coding moth flight, overall insect activity remains low throughout the region.

Codling moth degree-day accumulations since biofix range from about 1215 in Henderson County to almost 1700 in the Cleveland County area. The 1700 DD in lower elevations correlates with about 70% emergence of moths and 30% egg hatch, so this is an important time to be monitoring to determine the need for insecticide sprays. While in most situations a single insecticide application at about 1450 DD is sufficient for second-generation codling moth, two applications may be needed under higher population pressure. If traps are capturing more than 5 to 7 moths per week, an insecticide is recommended. Remember to use an insecticide with a different mode of action than was used against the first generation.

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