Abstract
Abstract The experimental design was a randomized complete block design consisting of four single-tree replications. Tree spacing was 20 by 20 ft with tree age being 40 years. The main variety was Barcelona with Daviana pollinizers. All insecticides were applied to Barcelona trees. Adjuvants were not included. Treatments were applied with an Amerind McKissick sprayer by handgun, using 2 gal of water per tree (ca. 218 gal/acre). Pretreatment monitoring of filbert nut development, weather, and adult flight activity of filbertworm were used to time insecticide applications. Pheromone traps were monitored twice a week until the third week of Sept. Large moth catches were recorded in all traps. Pheromone caps were changed twice during the monitoring period.
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