Year-Round IPM Program
(Reviewed 6/06, updated 6/06)
These practices are recommended for a monitoring-based IPM program that reduces water quality problems related to pesticide use. Links take you to information on how to monitor, forms to use, and management practices. Track your progress through the year with the annual checklist form. This program covers the major pests of prunes; information on additional pests is included in the Prune Pest Management Guideline.
Water quality becomes impaired when pesticides move off-site and into water. Each time a pesticide application is considered, review the Pesticide Application Checklist at the bottom of this page for information on how to minimize water quality problems.
Special issues of concern related to water quality: dormant sprays, drift, and
|What should you be doing at this time?
|If aphids are a chronic problem, treat during the period from November 1 to the end of December.
|Take a dormant spur sample for San
Jose scale, mites, and aphids (if not treated in November).
- Keep records on a monitoring
- Treat if needed according to Prune Pest Management Guideline.
|Delay treatment for peach twig borer until
|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.
|Allow resident vegetation to grow; monitor weeds in October and November.
Keep records of other pests you may see:
- Euriophyid mites
- Fruittree leafroller egg masses
- Italian pear scale
- Peach twig borer hibernacula
- Tree borers
- Pocket gophers
Special issues of concern related to water quality: drift.
Special issues of concern related to water quality: runoff from irrigation,
Why is this period important in an IPM program?
Fall is when aphids
migrate back into the orchard.
Pesticide application checklist
When planning for possible pesticide applications in an IPM program, consult the Pest Management Guidelines, and review and complete this checklist to consider practices that minimize environmental and efficacy problems.
- Choose a pesticide from the UC IPM Pest Management Guidelines for the target pest considering:
- Before an application:
- Ensure that spray equipment is properly
calibrated to deliver
the desired pesticide amount for optimal coverage.
- Use appropriate spray nozzles and pressure to minimize off-site movement of pesticides.
- Avoid spraying during these conditions to avoid off-site
movement of pesticides.
- Wind speed under 3 mph and over 10 mph
Just prior to rain or irrigation (unless it is
an appropriate amount, such as when incorporating a soil-applied pesticide)
- At tractor speeds over 2 mph
- Identify and take special care to protect sensitive areas (for example, waterways or riparian areas) surrounding your application site.
- Review and follow labeling for pesticide handling,
personal protection equipment (PPE) requirements, storage, and disposal guidelines.
- Check and follow restricted entry intervals (REI) and preharvest intervals (PHI).
- After an application:
- Record application date, product used, rate, and location of application.
- Follow up to confirm that treatment was effective.
- Consider water management practices that reduce pesticide movement off-site.
- Consider practices that reduce air quality problems.
- When possible, reduce volatile
organic compound (VOC) emissions by
decreasing the amount of pesticide applied, choosing low-emission management
methods, and avoiding fumigants and emulsifiable concentrate (EC) formulations.
For more about mitigating the effects of pesticides, see the Mitigation page
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