2007 Annual Report 1a.Objectives (from AD-416) Demonstrate efficacy of large scale mating disruption: . 1)as the initial management strategy for lesser peachtree borer attacking southeastern peaches, and. 2)as a replacement for chlorpyrifos to manage peachtree borers attacking southeastern peaches. 1b.Approach (from AD-416) Research initiates mating disruption as an alternative pest management strategy for sesiid borers attacking peach. This approach addresses the loss of broad spectrum organophosphate insecticides for peach production and the concomitant rise of secondary pests to primary pest status with an environmentally-friendly strategy. 3.Progress Report This progress report serves to document research conducted under a specific cooperative agreement between ARS (Byron, GA) and the University of Georgia, CRIS 6606-21220-008-19R, "Risk Reduction for Southeastern Peaches: Implementing mating disruption for management of borers." Additional details of research can be found in the report of parent CRIS 6606-21220-008-00D, "Deciduous Fruit Improvement and Protection from Disease Pests." The Lesser Peachtree Borer has become a serious pest of peach production in the SE and the Peach Tree Borer annually is a significant pest that must be controlled. Mating disruption offers another environmentally safe method of controlling these pests. An ARS scientist from the Southeastern Fruit and Tree Nut Research Laboratory, Byron, Georgia, in cooperation with a colleague at the University of Georgia, has tested mating disruption to control these pests. Orchard permeation with high rates of a synthetically-produced sex pheromone led to a decrease in the populations of both pest species. This technology is readily adaptable to southeastern peach production. The ADODR has monitored this project through meetings with the cooperator as well as e-mail correspondence with the cooperator.