Submitted to: Western Orchard Pest and Disease Management Conference
Publication Type: Abstract Only
Publication Acceptance Date: December 15, 2000
Publication Date: January 10, 2001
Citation: Knight, A.L., Light, D.M., Lingren, S. 2001. Monitoring codling moth in apple with a bisexual attractant. Western Orchard Pest and Disease Management Conference. p. 1. Technical Abstract: Lures loaded with DA2313 were evaluated in over 100 orchards in WA State during the 2000 season. DA2313 lures were effective in tracking the emergence and flight periods of codling moth. Moth captures by DA2313-baited traps begins a few days after the 1st males are caught in pheromone-baited traps and weekly counts are generally lower during the 1st flight in DA2313-baited than pheromone-baited traps. DA2313 lures clearly outperformed sex pheromone lures during the 2nd flight in pheromone-treated orchards. The regression of moth catch vs. the estimate of fruit injury within 2.5 acres around each trap was more highly correlated with DA2313- baited than with sex pheromone-baited traps. Traps baited with DA2313 were used effectively to establish a Biofix for timing insecticide applications. Sprays based on 155 deg days not 250 deg days following Biofix are recommended with the use of DA2313. Data suggest that practitioners may not need to sex moths caught in the trap or dissect the female moths to determine their mating status when using DA2313 lures. High levels of female mating occurs in orchards treated with Isomate-C+ despite its success in reducing fruit injury, and both sexes tend to be caught concurrently.