Monitoring & Trap-Out Strategies for Orchard Pest Control
The following diagram illustrates a monitoring strategy for apple pests:
- Five weeks after petal fall, hang a trap on the south side of a tree (see the black X on the diagram) at eye level, using one trap per planting up to one acre.
- Check the trap daily. Keep a log of the number of flies captured.
- Apply an approved spray 7 days after the first fly is caught. Repeat sprays at 10 to 14 day intervals if flies continue to be captured.
The following diagram illustrates a trap out strategy for apple maggot fly. Please Note - This strategy only works for apple maggot fly and only for those orchards that have received successful pest management during the previous two years:
- One trap in each wild (hawthorn) or abandoned (apple) tree (see the red X's on the diagram) within 300 to 400 yards of the orchard perimeter.
- One trap every 100 feet (see the black X's on the diagram) of the outside row of the orchard perimeter (especially near possible sources of migration).
- A minimum of one trap per acre throughout the interior of the orchard block.