Journal of Economic Entomology (2019) 112, 763-771

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Charles S. Burks and Donald R. Thomson (2019)
Optimizing efficiency of aerosol mating disruption for navel orangeworm (Lepidoptera: Pyralidae)
Journal of Economic Entomology 112 (2), 763-771
Abstract: Improved cost efficiency for aerosol mating disruption for the navel orangeworm, Amyelois transitella Walker, was examined in experiments performed between 2015 and 2017. A programmable dispenser was used to explore the effects of frequency of treatment, time of night when pheromone was emitted, and the concentration of pheromone required. A negative curvilinear trend of males captured as a function of emission frequency was evident in the range of 2–12 emissions per hour. A subsequent experiment found greater trap suppression when the same amount of active ingredient was emitted seven times per hour compared with the same amount of material emitted at twice the concentration but half the frequency. Another experiment found no significant difference in cumulative trap suppression between treatment for the last 4 or 6 h of the night compared with 12 h. A subsequent experiment comparing a current commercial mating disruption system emitting for 12 h with a proposed alternative emitting more material per hour for fewer hours showed similar levels of suppression of males in pheromone traps. A season-long efficacy trial using dispensers deployed and programmed based on these findings demonstrated significant reduction of damage to Nonpareil almonds treated with mating disruption. These data reveal important information about the response of the navel orangeworm to aerosol mating disruption, which provides improved cost-effectiveness compared with the status quo ante. These findings for navel orangeworm are discussed in relation to studies of aerosol mating disruption for the codling moth, Cydia pomonella L. (Lepidoptera: Tortricidae).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
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Database assignments for author(s): Charles S. Burks

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
control - general


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Amyelois transitella Almond (Prunus dulcis) U.S.A. (SW)
Amyelois transitella Pistachio nut and relatives (Pistacia) U.S.A. (SW)