Second generation moths will fly again in mid July and August. Pheromone traps are an excellent tool for monitoring populations of adult male codling moths. The second application, if necessary, can be applied about 2 - 3 weeks later. Under low pressure, mating disruption may represent a valuable alternative for conventional insecticides. The Isomate C pheromones are commercially available for the mating disruption of this pest.
Petal fall is a crucial timing for a wide range of pests of apples.
Although both Agri-Mek and Provado are rated as having moderate toxicity against Stethorus, both are systemic and thus the period of activity is very brief. Plum curculio injury has increased in recent years, particularly in the southern portion of Pennsylvania. Plum curculio injury can be prevented with insecticide applications timed to prevent adult feeding and egg laying in the fruit. Recommendations for PC are an organo-phosphate insecticide applied as early in petal fall as possible, treating on a variety by variety basis if necessary. A residual of insecticide should be maintained for 340 degree-days base 50 after petal fall.