Oviposition traps, flight traps baited with unmated females, and mating assays with unmated females have been used to monitor 4 square miles each of almonds and pistachios in Kern County, California, as part of a study of the impact of mating disruption treatments. These ranches are monitored on a weekly basis from March through October. Both the oviposition traps and the flight traps indicate that the navel orangeworm is more prevalent in pistachios than almonds, despite generally lower rates of infestation in pistachio nuts. There is a strong positive correlation between the proportion of mated females in the assays and prevalence, as indicated by males captured in the flight traps. Data and discussion about the impact of these findings for mating disruption as a pest control method in these commodities will be presented.
Species 1: Lepidoptera Pyralidae Amyelois transitella (navel orangeworm)
Keywords: mating disruption
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