Hosts: apple, pear
Biology: Overwinter as diapausing larvae, and pupate in spring. Adult female moths lay eggs on and near apple/pear fruit and larvae tunnel within fruit and feed on the seeds. Two-three generations/season.
Symptoms: Frass at entry/exit hole; tunneling inside fruit toward seeds.
- Non-mating disruption: Hang pheromone trap with regular codling moth lure at first pink or 100 degree days after March 1 to record date of first moth flight (called biofix, when 2+ moths have been caught). Leave trap in orchard and check moth numbers weekly to monitor population throughout the season.
- Mating disruption: Hang pheromone trap with CM-DA lure at first pink or 100 degree days after March 1 in backyard tree or non-mating disrupted area close to orchard to determine biofix date. Continue checking trap weekly for threshold level.
- Non-mating disruption: no threshold; usually treatment is needed throughout the season to protect fruit.
- Mating disruption: treat when 10 moths have been trapped using the CM-DA lures.
Degree Day Model:
- Upper threshold: 88°F
- Lower threshold: 50°F
- Biofix: first trap catch
|1% egg hatch||220|
|period of greatest egg hatch||340-640|
|100% egg hatch||920|
|1% egg hatch||1100|
|period of greatest egg hatch||1320-1720|
|100% egg hatch||2100|
|1% egg hatch||2160|
In addition, maintain proper sanitation by removing apple bins from the orchard and removing/mowing fallen fruit.