Source: NCSU COOPERATIVE EXTENSION, 5/11/21


We have entered a period where the main focus of insect control throughout the region is the codling moth, and it will remain that way for the next several weeks. Degree-day accumulations since biofix range from about 240 in Henderson County to 420 in the Lincoln/Cleveland County region. Under moderate to high codling moth populations, an initial application is recommended at 250 DD, which coincides with initial egg hatch. However, populations are considerably lower in the vast majority of commercial orchards, and delaying an application until approximately 350 DD will allow growers to reduce the number of applications targeting the first generation without risking damage. The last spray targeting first generation codling moth is generally between 600 to 650 DD. Pheromone trapping is an important tool to verify the existence of low populations. The forecast calls for below normal temperatures for the next week, so few degree-days will be accumulating during this time.

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