17 Year Cicada Biology Management

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17 Year Cicada Biology / Management
Dr. Richard Miller (Emeritus) Dr. David Shetlar
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Brood X
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Brood X
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Cultural Controls
Option 1 Cultural Control - Delay Tree
Planting If a periodical cicada emergence is
predicted, it may be best to postpone new orchard
plantings until the following spring. Home
gardeners are encouraged to delay planting until
late summer or fall, after the adult cicadas have
died.
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Cultural Controls
Option 2 Cultural Control - Prevent Egg-laying
Trees in small orchards or yards can be
protected with nylon netting or cheesecloth
during the egg laying period. The netting should
have a mesh of no less than 1/4 inch and should
be placed over the trees when the first male
songs are heard. The netting should be tied to
the trunk beneath the lower branches, and can be
removed after adult activity has ended.
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Cultural Controls
Option 3 Cultural Control - Remove Eggs Prune
out and destroy young twigs that have been
damaged by egg laying within a three week period
after eggs are laid. This will prevent newly
emerged nymphs from reaching the ground.
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Netting
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Chemical Controls
Option 4 Chemical Control - Nurseries or
Orchards Ornamental nurseries and orchards near
woods should be scouted every two to three days
during the egg laying period to detect migrating
females. Sprays may be necessary if egg laying
activity is apparent or continues after spraying.
Insecticides labeled for use on cicadas include
carbaryl (Sevin), chlorpyrifos (Dursban,
Lorsban), esfenvalerate (Asana) and
resmethrin. Fruit orchards using methomyl
(Lannate, Nudrin), oxamyl (Vydate) or
permethrin (Pounce, Ambush) in a cover spray
need not add a special cicada insecticide.
Applications of Sevin or Vydate within 21 days
after apple full bloom may cause thinning. The
use of pyrethroids, Vydate or Sevin is cautioned
in orchards because of the subsequent problems
with increased spider mite densities due to
toxicity to predatory mites.
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Chemical Controls
Option 5 Chemical Control - Landscape
Ornamentals Spraying the ground and trees to
control periodical cicadas is not generally
recommended. However, if small trees are present
and cicadas are numerous in the area, chemical
controls may be warranted. The insecticides
carbaryl (Sevin), resmethrin, and permethrin
(Bug-B-Gon Multi-Purpose) have products labeled
to protect shrubs and trees in landscapes. Either
can be applied about once a week, although
blooming plants should be avoided to preserve
honey bees and other pollinating insects.
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