2005 Annual Report 4d.Progress report. This report serves to document research conducted under a reimbursable cooperative agreement between ARS and Virginia Polytechnic Institute. Additional details of research can be found in the report for the parent CRIS 1931-21000-015-00D, Integrated Orchard Management for Deciduous Tree Fruit Crops. This project explores the potential for using a mass trapping strategy to control dogwood borer in commercial apple orchards. Traps baited with the sex pheromone of dogwood borer were deployed in commercial apple orchard blocks at high and low densities prior flight activity to determine if dogwood borer populations can be reduced below damaging levels by trapping large numbers of male moths. Infestation rates by dogwood borer were established prior to trap deployment and were re-evaluated during the midseason. Infestation rates and trap captures from these blocks are being compared with those from a block treated with a conventional organophosphate insecticide chlorpyrifos and an untreated block. The study is ongoing. This project supplements the parent CRIS by providing detailed information on sub objective 2c, development of behaviorally based monitoring technologies for the indirect wood boring pest, dogwood borer.