Source: NCSU COOPERATIVE EXTENSION, 6/2/20


Codling Moth
Codling moth degree-day (DD) accumulations range from 420 in Henderson County to about 750 in the Lincoln/Cleveland County area. Henderson County, and locations of similar elevation (>2000 ft), are in the midst of first-generation flight, and codling moth should be considered a potential concern for another two weeks. With that said, to date populations have been very low in Henderson County. In lower elevation orchards with an accumulation of 750 DD, we are approaching the end of first-generation adult emergence (>90% emergence complete), and additional insecticide applications are most important where first-generation populations have been high based on pheromone trap captures.

Tufted Apple Bud Moth
Tufted apple bud moth DD accumulations in Henderson County are about 525 as of June 2. Historically TABM populations are more important in Henderson County opposed to other production regions. Based on forecasts, the ideal timing for an insecticide will be in about 7 to 10 days, when DD accumulations will approach 800. A single application of an insecticide recommended for codling moth will provide season-long control of TABM; these include the diamides (i.e., Altacor, Voliam Flexi, Exirel, Verdepryn) or Delegate. In addition, Intrepid also provides excellent season-long control of TABM. Because the diamides and Delegate are more effective against codling moth than Intrepid, the latter should only be used where codling moth is not a concern.

Secondary Pests
Aphids, leafhoppers, and mites have been very low to nonexistent up to this point in time. However, with warmer and hopefully drier weather returning, these are pests to keep an eye out for in the coming weeks.

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