Year-Round IPM Program Pages
This year-round IPM program covers the major pests of prune in California.
Dormancy/delayed-dormancy (leaf fall to bud swell)
- Why is this season important in an IPM program?
- Special issues of concern related to water quality: dormant sprays, drift, and rain runoff.
What should you be doing during this time?
Survey weeds in October and November.
- Survey weeds after first rains and complete a late fall weed survey form.
- Let resident vegetation grow between rows.
- Manage weeds in tree rows with pre- or postemergent herbicides, or approved practices in organic orchards.
If aphids are a chronic problem, treat during the period from November 1 to the end of December.
Take a spur sample for San Jose scale, mites, and aphids (if not treated in November).
- Keep records on a monitoring form.
- Treat, if needed according to the prune Pest Management Guidelines.
Delay treatment for peach twig borer until bloom time.
During pruning, look for dead wood caused by shothole borer and Pacific flatheaded borer. Prune and burn infested branches.
Knock off and destroy mummy fruit to reduce brown rot problems.
Keep a record of other pests you may see:
- Eriophyid mites
- Fruittree leafroller egg masses
- Italian pear scale
- Peach twig borer hibernacula
- Pocket gophers
- Tree borers
- Voles