Apple, Codling Moth Control with AC 303630, 1991

The experimental insecticide AC 303630 was evaluated for its ability to control CM when used in a seasonal spray program. The test orchard was located at the Tree Fruit Research and Extension Center, Wenatchee. Trees were 12-year-old non-spur ‘Red Delicious’ and ‘Golden Delicious.’ The orchard was irrigated by over-tree sprinklers on a 14-day schedule. The test design consisted of five single-tree replicates per treatment arranged in randomized complete blocks. Treatments were applied with a handgun sprayer at 300 psi to the point of drip, simulating a dilute spray of approximately 400 gal/acre. The first application, 29 May, coincided with beginning of CM egg hatch as predicted by the CM degree day (°D) model (250 °D after BIOFIX = first capture of CM in pheromone traps).