Source: NCSU COOPERATIVE EXTENSION, 4/23/19

Petal fall is an important time for control of the plum curculio and first generation oriental fruit moth (OFM). For both insects, a single insecticide application generally does an excellent job of minimizing damage by these pests. However, the choice of insecticides to use will depend on whether mating disruption is being used for OFM, and if an insecticide effective against rosy apple aphid was applied before bloom. 

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