Year-Round IPM Program Pages
This year-round IPM program covers the major pests of pear.
About Fruit development (petal fall to harvest)
- Special issues of concern related to environmental quality: runoff from irrigation and drift.
- Mitigate pesticide effects on air and water quality.
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
- Plant bugs (lygus bugs, stink bugs)
- Katydid nymphs
Manage if needed according to the Pear Pest Management Guidelines.
Continue monitoring weather conditions during rattail bloom for fire blight.
Manage orchard floor vegetation:
- Mow, cultivate, or apply a a postemergence herbicide to manage ground cover.
- Survey for escaped winter weeds and emerging annual and perennial summer weeds.
- Keep records (example late-spring weed survey form .
Note the presence of Armillaria root rot (oak root fungus).