Development of a Female-Produced Sex Pheromone for Managing Prionus Californicus in Hop Grant uri icon



  • Prionus californicus (Coleoptera: Cerambycidae) is a serious root-feeding pest of hop in the Pacific Northwest. At present there are no host-plant resistance or biological control alternatives available to control this pest, and no insecticides have been registered for its control. The only effective methods available for managing P. californicus infestations in hop are the complete removal of hop rootstock from infested fields followed by soil fumigation, or by a 2- to 3-year period in which the field is left fallow or planted to a non-host crop. All of these alternatives are very expensive and disruptive to hop growers. Our recent research has confirmed that female P. californicus produce a sex pheromone that is highly attractive to males, and we have narrowed the pheromone structure down to one of only eight possible compounds. The primary goals of this proposal are are to confirm the structure of the Prionus californicus pheromone and to develop volatile pheromones as a component of an IPM program for managing P. californicus in hop: by reducing populations of insect pests by preventing mating, either by eliminating males from the population or by inundating the area with pheromone so that males cannot locate females, and consequently females produce no viable eggs

date/time interval

  • August 15, 2007 - August 14, 2010

sponsor award ID

  • IDA00703-CG