Agriculture: Pear Pest Management Guidelines

Fruit Development

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

About Fruit development (petal fall to harvest)

What should you be doing during this time?

Take weekly samples.

Examine leaves for

  • Aphids
  • European red mites and eggs
  • Katydids or feeding damage
  • Pear psylla eggs and nymphs
  • Pear sawfly (pearslug) eggs and larvae
  • Pearleaf blister mite damage
  • Twospotted spider mites and predatory mites

Examine fruit for

  • Codling moth larva or damage
  • Katydid damage after June 30
  • Mealybugs (grape, obscure) at the calyx
  • Obliquebanded leafroller larva or damage
  • Pear rust mites at the calyx
  • Plant bug damage (western boxelder bug, lygus bugs, stink bugs)

Manage according to the Pear Pest Management Guidelines.

Continue to monitor for codling moth:

  • Continue monitoring traps.
  • Monitor fruit on the tree for damage at 800 to 900 degree-days from biofix.
  • Check fallen fruit on the ground in early July.

Manage if needed according to the Pear Pest Management Guidelines.

Check cover crops and weeds for

Manage if needed according to the Pear Pest Management Guidelines.

Continue monitoring weather conditions during rattail bloom for fire blight.

Manage orchard floor vegetation:

Note the presence of Armillaria root rot (oak root fungus).

Text Updated: 11/12