Monitoring the Codling Moth (Lepidoptera: Olethreutidae) and the Obliquebanded Leafroller (Lepidoptera: Tortricidae) with Sticky and Nonsticky Traps

In monitoring trials conducted in 1985 in 17 apple orchards of Quebec, Ontario, Massachusetts, and New York, two sticky pheromone trap models (Pherocon 1C and Pherocon II) and two non sticky trap models (Multi-Pher I and III) were tested to monitor the codling moth, Cydia pomonella L., and the oblique banded leaf roller, Choristoneura rosaceana (Harris). Three criteria of trap performance were considered: (1) total seasonal captures, (2) maximum seasonal captures of the first generation, and (3) first date of captures. Trap performance varied between sprayed and unsprayed orchards. In sprayed orchards, Pherocon 1C and Multi-Pher I had higher codling moth captures than expected; however, no trap model was consistently superior for monitoring of oblique banded leaf roller. For codling moth, Multi-Pher I consistently had a higher frequency of maximum seasonal captures than other trap models. For the oblique banded leaf roller, the two sticky trap models had a higher frequency of maximum captures than other trap models in sprayed orchards. Pherocon II was the best trap for evaluation of the first date of capture of codling moth in sprayed and unsprayed orchards and oblique banded leaf roller in sprayed orchards.