Source: NCSU COOPERATIVE EXTENSION, 5/18/21


Codling moth remains the primary concern across the region, with degree-day accumulations since biofix ranging from about 300 DD in Henderson County to about 520 in the Cleveland/Lincoln County area. As highlighted in last week’s update, insecticide recommendations vary depending on how an orchard is being managed – i.e., a full crop versus one that is questionable as to whether or not to manage.

In higher elevations (Henderson, Haywood, Wilkes) being managed as a full crop, insecticidal control of codling moth is recommended an upcoming spray. In situations with a low codling moth population and which have not yet been sprayed for codling moth, an application should be made at about 350 DD, which is later this week in these locations. In lower elevations where DD accumulations are about 520, it should be remembered that an application between 500 and 650 DD will coincide the optimum timing for control of tufted apple bud moth. While first generation codling moth can remain a concern up to about 900 DD, in most situations insecticides are not needed beyond 600 and 650 DD.

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