Oriental Fruit Moth (OFM) on Peaches

Regional Information

• Regional historic sites
• Ideal several sites/region
• 10 traps/site ideal
• 5 traps/site minimum
• Rely on regional data from a number of sites for timing of control options
  

Site Specific Monitoring

• Pesticide resistance monitoring conducted 1994-99
• Grower follow-up on efficacy of chemical control option by examining shoots and fruit 7-10 days after spray application
  

Monitoring Techniques Thresholds

• Traps monitored twice/week
• Pherocon II trap
• Pheromone lure
• Damage potential too high to set threshold by number of moths caught per trap
• Traps give timing of population activity of adult male OFM only
  

Additional Notes

• Three generations and partial 4^th per year
• One well-timed spray per generation is usually sufficient
• Composite of trap catches within areas and across region to predict spray dates
• Harvest assessment to monitor fruit damage
• Research examining temperature predictive computer modelling for timing of sprays continues
• OFM can also cause damage to pear and apple
  

Commonly Used Control Options

• Resistance to organophosphates (e.g. Guthion, APM, Sniper) was confirmed in all major areas of production in Niagara and Essex/Kent. Resistance is suspected in other areas.
• Treatment of 1^st generation with Lorsban and 2^nd-4^th generation with pyrethroid insecticide has been a successful control strategy
• Demonstration trial is underway to incorporate mating disruption technology - excellent results to date.

Related Links

• Pest Complex on Peach and Nectarine in Ontario Major Pests (PDF File 16K)
• Pest Complex on Peach and Nectarine in Ontario Minor/Sporadic Pests (PDF File 15K)