PHEROMONE TRAPPING OF ORCHARD LEPIDOPTEROUS PESTS IN CENTRAL OTAGO, NEW-ZEALAND

Pheromone traps were operated weekly throughout the growing season for three key leafroller pests and codling moth at four orchard sites for up to 10 growing seasons in the Alexandra and Clyde districts (Centra l Otago) of New Zealand. Epiphyas postvittana and Planotortrix octo we re the most commonly trapped species. Ctenopseustis obliquana was caug ht in low numbers at all sites. All three species showed a trough in m ale flight activity in January between first and second generations. C ydia pomonella occurred at all four sites, exhibiting one generation p er year, with flights continuing during the trough in leafroller activ ity. Prospects for reduced use of insecticides during this period ther efore seem better on stonefruit than pipfruit since stonefruit are rar ely attacked by codling moth.