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Effects of pheromone loading, dispenser age, and trap height on pheromone trap catches of the Oriental fruit moth in apple orchards



Effects of pheromone loading, dispenser age, and trap height on pheromone trap catches of the Oriental fruit moth in apple orchards



Phytoparasitica 34(3): 252-260



The effects of field aging (0-28 days) and pheromone loading rate on the longevity of red rubber septa loaded with the sex pheromone blend of the oriental fruit moth Grapholita molesta (Busck), were evaluated in North Carolina apple orchards in 2002. Separate field tests examined the influence of trap height and pheromone loading rate of rubber septa on trap catches of adult G. molesta males in an abandoned orchard. The loss of the major pheromone component, (Z)-8-dodecenyl acetate (Z8-12:OAc), from red rubber septa over a 4-week period exhibited a relatively constant release rate with 30, 100 and 300 mu g pheromone. Trap catch was significantly higher in pheromone traps placed in the upper canopy than in those in the lower canopy. Pheromone traps baited with 100-mu g lures caught more moths compared with those loaded with 300 mu g. There was no apparent relationship between pheromone trap catch and septa age, with trap catch appearing to be primarily a function of G. molesta population density.

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Accession: 066195306

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DOI: 10.1007/bf02980952


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