How to Manage Pests
UC Pest Management Guidelines
Peach Silver Mite
Scientific name: Aculus cornutus
In this Guideline:
Peach silver mites are tiny, four-legged eriophyid mites, yellow to
pinkish white, and somewhat wedge shaped, being broadest just behind the
anterior end. Because they are so tiny, they are difficult to see without a
hand lens of at least 10X power.
Peach silver mites overwinter as females in bark crevices, around
buds, and under bud scales. They move to leaves soon after budbreak in spring.
These mites can also be found on small fruit, often inhabiting the area between
the calyx and the fruit. Later in the season they are found primarily on the
lower leaf surface. Before leaf fall, females move to overwintering sites. Many
generations are produced during the season.
Injury is not usually noticed until mid- to late summer when heavily
infested leaves take on a silvery appearance.
Treatments applied specifically for control of peach silver mite are
rarely needed and should be avoided because peach silver mites serve as early
season food for predaceous mites, which in turn aid in reducing populations
of other pest mites. The use of broad-spectrum insecticides for other pests can
cause high infestations of peach silver mite.
Sulfur sprays are acceptable for organically certified crops, but will
reduce predator mite populations.
and Treatment Decisions
If heavy populations (200–300 per leaf) of peach silver mite are
present and causing damage, consider applying sulfur or miticides used for
control of other mite species. Some insecticides applied for control of other
pests eliminate peach silver mites as well.
|When choosing a pesticide, consider information relating to impact on natural enemies and
honey bees, the impact
of the timing on beneficials, and environmental impact. Not all
registered pesticides are listed. Always read label of product being used.
||MODE OF ACTION: Unknown. An inorganic miticide.
||COMMENTS: Do not apply within 2 weeks of oil spray. May reduce predator mite populations.
UC IPM Pest Management Guidelines: Peach
UC ANR Publication 3454
Insects and Mites
W. J. Bentley, UC IPM Program, Kearney Agricultural Center, Parlier
J. K. Hasey, UC Cooperative Extension, Sutter/Yuba counties
K. R. Day, UC Cooperative Extension, Tulare County
Acknowledgment for contributions to the Insects and Mites:
R. E. Rice, Kearney Agricultural Center, Parlier
C. Pickel, UC IPM Program, Sutter/Yuba counties
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