Agriculture: Pear Pest Management Guidelines

Bloom

This year-round IPM program covers the major pests of pear.

About Bloom (red bud to petal fall)

What should you be doing during this time?

Examine flower clusters for

  • Pear psylla eggs and nymphs
  • European red mites
  • Pear rust mites
  • Caterpillars (green fruitworm, obliquebanded leafroller)
  • Western flower thrips
  • Mealybugs (grape, obscure)
  • Western boxelder bug eggs, nymphs, and adults

Manage if needed according to the Pear Pest Management Guidelines.

Place pheromone traps in the orchard for

  • Codling moth in late March for mating-disruption and conventional orchards
  • Consperse stink bug in early April
  • Obliquebanded leafroller in late April

Check traps and keep records (example monitoring form PDF).

If using mating disruption for codling moth, place pheromone dispensers in orchard at biofix.

When weather conditions promote disease, time fungicide and antibiotic treatments as needed according to the Pear Pest Management Guidelines:

  • Pear scab
    • Check leaves and emerging fruit for pear scab lesions 7 to 10 days after an infection period to assess the effectiveness of treatment.
  • Fire blight

Watch the orchard for vertebrates and manage as necessary:

In cold, wet weather note the presence of blossom blast.

Text Updated: 11/12