Female Apple Maggot Captures and Injury to Unsprayed Apples

The amount of injury by Rhagoletis pomonella (Walsh) in unsprayed apple orchards was not related to the number of female captures on Pherocon® AM traps. Injury was greatest in the orchard with the most captures, but weekly estimates of injury were not proportional to weekly female captures. No injury occurred until at least 3 wk after the 1st capture which indicates that the 1st spray does not need to be applied within 7 days after 1st capture as presently recommended. Sprays will be necessary at low levels of adult prevalence to provide maggot free fruit.