Year-Round IPM Program
(Reviewed 6/10, updated 6/10)
These practices are recommended for a monitoring-based IPM program that reduces water quality problems related to pesticide use. 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.
This program covers the major pests of Avocado. Details on carrying out each practice and information on additional pests can be found in the guidelines. Track your progress through the year with this annual checklist form.
|What should you be doing
during this period?
diseases and conditions that promote disease development.
Record the date
and location of problem trees or sites. Manage if needed
according to Avocado Pest Management Guidelines.
Begin monitoring for
invertebrate pests, including:
if needed according to Avocado Pest Management Guidelines.
Survey weeds, especially
weeds near trunks, during spring through fall.
- Manage vegetation if
needed, especially weeds near trunks.
- Record results (example weed
survey form ).
Look for vertebrates,
especially during spring and summer. Manage if needed.
|Provide proper cultural
care and good growing conditions
to improve fruit yield and control pests.
Promote pollination of flowers:
- Place honey bee hives in groves during bloom.
- Manage pesticides to avoid killing bees.
Apply gypsum and mulch to
reduce avocado root rot and improve soil.
- Inspect irrigation systems by late winter.
and adjust scheduling to meet trees’ varying
- Test irrigation water quality.
|What should you be doing during this period?
|Check preharvest intervals for all products used.
Use pruning and other cultural
minimize anthracnose in groves and fruit rots postharvest.
|Size pick fruit.
Thin clustered fruit and prune to reduce protected sites,
thereby culturally controlling greenhouse thrips, leafrollers,
loopers, and mealybugs:
- Thin by selectively
harvesting only larger fruit, which increases market
price to the grower.
Minimize fruit injury
and postharvest disease.
Educate and supervise workers regarding fruit handling
Management Practices (BMP), Good
Agricultural Practices (GAP),
| Inspect fruit quality
before bins are moved from the picking site to identify
grove areas where management practices need improvement.
Take steps to prevent fruit contamination and theft.
Pesticide application checklist
When planning for possible pesticide applications in an
IPM program, 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:
- Choose application procedures that
keep pesticides on target.
- Identify and take special care to
protect sensitive areas (for example, waterways or
riparian areas) surrounding your application site.
- Review and follow label for pesticide
handling, 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
- Consider water
management practices that reduce pesticide movement off-site.
- Limit irrigation to amount required
evapotranspiration (ET) monitoring.
- Install an irrigation recirculation
or storage and reuse system.
- Consider the use of cover crops.
- Consider vegetative
filter strips or ditches.
- Install sediment traps.
- Use polyacrylamide (PAM) tablets
in furrow irrigation or sprinkler irrigation systems
to improve soil infiltration and prevent off-site
movement of sediments.
- Redesign inlets and outlets into tailwater
- Consider orchard
floor management practices that improve soil structure and reduce
- Consider practices that reduce air
- When possible, choose pesticides that
are not in an emulsifiable concentrate (EC) formulation,
which release volatile organic compounds (VOCs); this
is especially important from May to October. VOCs react
with sunlight to form ozone, a major air pollutant.
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