|
|
Peach
Year-Round IPM Program
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 peaches;
information on additional pests is included in the Peach
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.
Dormant/Delayed-dormant season
activities (leaf fall to bud swell) |
| What should you be doing during this period? |
|
Prune trees, removing and destroying:
|
|
Apply fungicide treatments** as needed according to PMGs:
|
|
Manage orchard floor vegetation:
|
|
Make an oil treatment** for scales and mite eggs.
- If you saw increasing damage from scales last year,
take a dormant shoot sample to
see if an insect growth regulator should be added to
the oil treatment.
|
|
Treat** peach
twig borer with environmentally
sound material or delay treatment until bloom. |
|
Keep a record of other pests you may see:
- Peach twig borer hibernacula
- Peach silver mite
- Fruittree leafroller egg masses
- Armillaria root rot
|
- Voles
- Pocket gophers
- Stink bugs
- Tree borers
|
Bloom season activities (green tip
to petal fall) |
| What should you be doing during this period? |
|
Put out pheromone traps for:
- Oriental fruit moth (February 15 in San Joaquin Valley,
February 20 in Sacramento Valley)
- Omnivorous leafroller (San Joaquin Valley—February
20)
- San Jose scale (February 25—San Joaquin and Sacramento
valleys)
Check traps and keep records
on a monitoring/degree-days
form . |
| If using mating disruption for oriental
fruit moth, place
dispensers in orchard after first moth is caught but no later
than March 5. |
Examine flower clusters
and leaves for:
- Peach twig borer
- Fruittree leafroller
- Obliquebanded leafroller
- Katydids
|
|
Watch ground cover for
pests:
- Stink bugs
- Plant bugs
- Katydids (primarily San Joaquin Valley)
|
|
When rainy conditions promote disease, time fungicide treatment** according to PMGs:
|
|
Monitor for diseases:
- Shot
hole
- Fruiting
structures in leaf lesions as long as weather is
wet.
- Manage if needed according to PMG.
|
|
Observe the orchard for vertebrates and manage as necessary:
|
|
Manage orchard floor vegetation:
|
|
Keep records of other pests you may see:
|
Fruit development period activities
(petal fall to harvest) |
| What should you be doing during this period? |
|
Put up pheromone traps for:
- Peach twig borer (March 20 in San Joaquin Valley, April
1 in Sacramento Valley)
- Obliquebanded leafroller (April 15 in San Joaquin Valley
and Sacramento Valley)
|
|
Monitor
shoot strikes for damage from oriental fruit moth
and peach twig borer.
|
If wet weather persists, continue to monitor
for rust:
- Manage if needed according to PMG.
|
If orchard has a history of scab:
- Treat** 3 weeks after full bloom.
- Treat** again 2 weeks later if scab was severe the
previous year.
|
|
Where ground
covers are present, take sweep samples for pests,
beginning from early April to early June for:
- Plant bugs (Lygus and Calocoris).
- Katydids.
- Stink bugs.
Manage if needed according to PMG. |
|
Examine fruit regularly after pit hardening
or color break in May for pest
damage. |
|
Monitor powdery
mildew
through pit hardening and treat** if needed according to
PMG. |
|
Manage orchard floor vegetation:
|
|
Monitor spider mites from May through August:
- For best evaluation, conduct two 5-minute searches
and keep records on a monitoring
form .
- Manage if needed according to PMG.
|
|
Take leaf samples in July to analyze for nitrogen, phosphorus,
potassium, and micronutrients.
- Select 60 to 80 mid-shoot leaves from moderately
vigorous fruiting shoots.
|
| If rain is predicted during the last 4 weeks before harvest,
treat for ripe
fruit rot. |
|
Keep a record of other pests you may see:
- Armillaria root rot
- Bacterial canker
- Phytophthora root and crown rot
- Peach silver mite
|
- Black peach aphid
- Scab
- Verticillium wilt
- Tree borers
|
| What should you be doing during this period? |
|
In early harvest orchards continue to watch for:
|
|
Treat** for leaf
curl and shot
hole just after leaf fall. |
| Consider seeding a cover
crop if resident vegetation is
sparse. |
**Pesticide application checklist |
|
Before a pesticide application is made and when planning for possible applications in an IPM program,
review and complete this checklist to minimize water quality and other problems.
- Follow each practice in the year-round IPM Program.
- Identify target pest, treatment threshold, trigger, or justification for treatment.
- Consider nonchemical alternatives.
- Identify important natural enemies that might be impacted by pesticide application.
- Choose a pesticide from the UC IPM Pest Management Guidelines for the target pest, considering
impact on natural enemies and
consulting the UC
IPM Watertox Database for water quality concerns. Select an alternative chemical or nonchemical
treatment when risk is high.
- Consider chemical class if pesticide resistance is an issue.
- Identify sensitive areas (for example, waterways or riparian areas) surrounding your application
site.
- Identify practices or mitigation measures to be used
to reduce pesticide movement off-site.
- Choose sprayers and application methods that minimize off-site movement.
- Review and follow pesticide handling, storage, and disposal guidelines.
- After an application is made, record application date, product used, rate, and location of application.
- Follow up to confirm that treatment was effective.
|
Top of page
|
