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How to Manage Pests
UC Pest Management Guidelines
Fig
Fig Scale
Scientific Name: Lepidosaphes conchiformis
(Reviewed 7/06,
updated 7/06)
In this Guideline:
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Overwintering adults are dark brown with a greasy-appearing wax
coating; summer broods and younger scales are lighter in color. Overwintering
females are found on 1- to 2-year-old wood. Eggs are laid in spring, and
crawlers hatch when leaves are unfolding. First generation scales settle on
leaves, but later generations settle on leaves, twigs, or fruit. Adult female
scales are oystershell shaped and about 0.1 inch long. There are usually three
generations with occasionally a partial fourth.
Damage is caused when scales settle on fruit. Their feeding causes a
kind of callous tissue to form on the skin, which gives the fruit a warty
appearance. It is particularly noticeable if the fruit is canned or candied.
A wasp parasite (Aphytis sp.), imported in 1949 from France, generally gives
excellent control of the fig scale. If the scale parasite has been disrupted
for some reason, chemical control may be necessary. Treatments applied during
the dormant season will adequately control the scale in most cases and have the
least disruptive effect on the parasites.
| Common name |
Amount to Use |
| (trade name) |
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| When choosing a pesticide, consider information relating
to impact on natural enemies and honey bees and environmental impact.
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| DORMANT |
| A. |
NARROW RANGE OIL# |
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(Omni Supreme Spray) |
3 gal/acre or |
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2 gal/100 gal water |
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MODE OF ACTION: Contact including smothering and barrier effects. |
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UC IPM Pest Management Guidelines: Fig
UC ANR Publication 3447
Insects and Mites
R. L. Coviello, UC UC Cooperative Extension, Fresno County
W. J. Bentley, UC IPM Program, Kearney Agricultural Center, Parlier
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