Year-Round IPM Program Pages
This year-round IPM program covers the major pests of prune in California.
Bloom (green tip to petal fall)
- Why is this season important in an IPM program?
- Special issues of concern related to water quality: drift.
What should you be doing during this time?
Mow ground cover down to a maximum height of 2 inches.
Monitor success of dormant weed management program:
- Note plants escaping treatment and their location in the field.
- Pay particular attention to plants escaping control with glyphosate, which might be an indication of resistance.
Treat orchards where brown
rot is a chronic problem; monitor weather
to determine the need for additional treatments.
- Put up pheromone traps.
- Keep records on a degree-day monitoring form.
Monitor peach twig borer larvae:
- Time bloom treatments according to the prune Pest Management Guidelines.
- In fresh market, or if no dormant or bloom spray was applied, put up and monitor pheromone traps (by March 20 in San Joaquin Valley; April 1 in Sacramento Valley).
- Keep records on a degree-day monitoring form.
Monitor for leafrollers and other caterpillars. Treat if needed according to the prune Pest Management Guidelines.
Keep records of other pests you may see:
- Russet scab
(only in fresh market prunes) - Viruses
- Voles