Not available – first paragraph follows: One to three insecticide treatments are required each season to control codling moth, a major insect pest in the 200,000 acres of walnuts, apples, and plums grown in California. Pheromone traps have been used for the last ten years to monitor moth populations so that insecticide applications can be timed for the most effective control. These traps have also been tested as a means of estimating codling moth infestations and suppressing populations by mass-trapping the adult males.