Abstract
Abstract Three different insecticides were tested for the control of the western cherry fruit fly in an abandoned, mixed variety cherry orchard located in Benton County, Oregon. Single tree plots were sprayed to the point of run-off using a powered, pull-tank type sprayer with a hand gun. The sprays were applied at 300-350 psi pressure and at a rate of about 250 gallons/acre. Treatments were replicated four times in a randomized design. The fly emergence in the study orchard was checked by employing Zoecon’s Pherocon-AM traps and treatment timing determined accordingly. Chemicals were applied on June 8, June 18, and June 28, 1977. Treatment effectiveness was assessed by collecting 100 cherries/plot (400 cherries/treatment) and examining for fly stings and maggots under a binocular microscope.
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