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The
Raspberry Fruitworms -Yellow
to brown beetles, 1/4 inch long. The larvae is brown and
white, up to 1/8 inch long. Commonly infest Blackberry,
dewberry and raspberry. Adults make long, narrow slits in
blossom buds and newly formed leaves. Larvae feed in
berries. [Image-Larva]
Adult raspberry
Fruitworm beetles [Image-Adult] overwinter in soil around host
plants, emerging in spring. The beetles begin feeding on
tender new foliage and, later, flower buds. Females
deposit eggs on or inside flower buds or young fruit.
Larvae bore into fruit and fall to the soil where they
pupate when fruit ripens.
Working
diatomaceous earth
into the soil around host plants will help deter this pest. Applying
beneficial nematodes
to the soil before planting will greatly reduce surviving
pupae.
Sprays/Pesticides must be
applied in the pre-bloom stage to prevent injury Pesticides such as pyrethroids
{Pyrethrin}
that are more effective in cool than warm weather will
work more efficiently against Fruitworms earlier in the
season, and is the recommended early season chemical
for Fruitworms.
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Cherry Fruitworms
-
[Image] cause
severe damage in
blueberries, cranberries and Cherries. It causes its
injury by boring into the fruit. The larvae bore through
the epidermis shortly after they hatch. This early injury can be
detected in a few days. The larvae may feed
extensively
just below the surface. A maturing larva may damage more
than one fruit. The cherry
Fruitworm has one generation
per year, once the
fruits themselves become infested there is
no way to kill off the worms which are inside.
All
infested fruits must be handpicked and destroyed so that
the cherry and cranberry Fruitworms do not migrate to
other nearby host plants.
Sprays/Pesticides must be
applied in the pre-bloom stage to prevent injury.
Pesticides such as
pyrethroids {Pyrethrin}
that are more effective in cool than warm weather
will work more efficiently against Fruitworms earlier in
the season, and is the recommended early season
chemical for Fruitworms. See Also
.
Bacillus Thuringiensis Thuricide
.
Cranberry fruit worm
A
serious pest of blueberries cranberries cherries .
Infested berries may be harvested without detection,
resulting in inspectors or consumers finding larvae in
packaged berries.
Wild blueberries and
cranberries are often heavily infested with the
cranberry Fruitworms; if commercial fields are nearby
they will likely have problems with this pest. Weedy,
unkempt plantings are also likely to have higher
populations of this insect.
Sprays/Pesticides must be applied in the pre-bloom stage to prevent injury.
Pesticides such as pyrethroids
{Pyrethrin} that are more effective in cool than warm
weather will work more efficiently against Fruitworms earlier
in the season, and is the recommended early season chemical for
Fruitworms. See Also .
Bacillus Thuringiensis Thuricide
.
Blueberry fruitworm
Sprays/Pesticides must be
applied in the pre-bloom stage to prevent injury.
Pesticides such as pyrethroids
{Pyrethrin} that are more
effective in cool than warm weather will work more
efficiently against Fruitworms earlier in the season,
and is the recommended early season chemical for
Fruitworms.
Fruit Crop Advisory
- Michigan State University
University of Florida - Insect
Management in Blueberries
Tomato Fruitworms and Corn earworms
The corn earworm/
Tomato Fruitworm varies in color from light green or
pink to dark
gray but are generally lighter on their
undersurface and have alternating light and
dark stripes along the length of their
bodies. The young larvae clip off silks and then
proceed into the ear where they remain until
ready to pupate in the soil. There are five
to six larval stages and the appearance and
color of the larvae change with each stage .
The moth is usually
light yellowish-olive with a single dark spot near
the center of each forewing. Common hosts are
Corn ,Tomato
,
Eggplant
, snap beans,
Sprays/Pesticides must
be applied in the pre-bloom stage to prevent injury.
Pesticides such as
pyrethroids {Pyrethrin}
that are more effective in cool than warm
weather will work more efficiently against
Fruitworms earlier in the season, and is the
recommended early season chemical for Fruitworms.
They Feed on corn,
soybeans,
strawberry
and tomatoes as well as several non garden plants.
This critter can cause severe damage to young seed
pods ,early recognition is the key to control.
Corn earworm moths are most active during evening
hours.
Praying Mantids
Are highly
effective at this stage. Adult moths are about an
inch long, robust and range from olive green to dark
red in color.
A recent study has
shown that
Lady Bugs
are a voracious predator of the larvae/pupae stages.
"A Lady Bug, ....... was the dominant
predator in corn contributing slightly less than
half of the observed predation. "
From
Baseline
Susceptibility of the Corn Earworm
The best control for
corn earworm on Strawberries and similar cultivars
is
Bacillus Thuringiensis Thuricide
(Bt)
Praying Mantids
Are effective against
the moth
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Controls
Predators
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Green Fruitworms
Speckled-Green Fruitworms
Humped-Green Fruitworms
Named "Green" Fruitworms, not only
because are primarily green, but because they predominantly attack Green
or immature Fruit.
Young green Fruitworms larvae feed on leaves.
Fruit feeding usually begins about petal fall and continues until larvae
have completed their development. At harvest, these fruit are misshapen
and have large, roughened, russeted cavities.
They include several species of caterpillars,
all of which are pale green, often with whitish stripes down each side
of the body and a narrow stripe down the middle of the back. Most
species pass the winter as pupae or adults, and have one generation each
year. Green Fruitworms eat large holes in young leaves and fruit
during late bloom and petal fall causing fruit to be scarred and
misshapen as they grow.
Small larvae feed on young
foliage initially, buds and blooms later, and finally on the
fruit when it becomes available. They cause deep, sunken
pits in the fruit. Most of the fruit damaged by these
caterpillars fall to the ground by early June. Damaged fruit
remaining on the tree has large, sunken, corky wounds at
harvest. A wide host range,
including apple, cherry, plum, pear, apricot, strawberry,
quince, willow, birch, poplar, balsam, alder, choke cherry,
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Sprays/Pesticides must
be applied in the pre-bloom stage to prevent injury.
Pesticides such as pyrethroids that are more
effective in cool than warm weather will work more
efficiently against Fruitworms earlier in the
season, and is the recommended early season
chemical for Fruitworms.
Pickleworms [Image] -
A tropical insect which routinely survives the winter only in deep
southern regions of the United States and further south (adios amigo)
North Carolina and South Carolina are regular hosts of the pickleworm,
but often this usually doesn't occur until early Autumn. It takes some
time for the varmints to hitch a ride north.
The life cycle is approximately one month. Overlapping generations
occur. Their minute eggs are white when deposited on the buds, flowers, and
other portions of the plant , but change to yellow after the first day. They are distributed in small groups, usually less than a dozen per
cluster. Hatching takes about four days.
Larval development time is about two weeks. After which the moths
emerge, they are primarily nocturnal. [Pickleworm
Moth - Image]. Moths are not found in the field during the daylight hours, and probably
disperse to adjacent wooded or weedy areas during the heat of the day.
Moths do not produce eggs until they are several days old.
Praying Mantids are recommended if not used in
conjunction with chemicals as they as well as bats are
among the few nocturnal predators of moths.
They feed on squash, cucumber, cantaloupe, and pumpkin. The blossom is a favored feeding site, especially for young larvae. In
plants with large blossoms, such as summer squash, larvae may complete
their development without entering fruit. They may also move from
blossom to blossom, feeding and destroying the plant's capacity to
produce fruit. Very often, however, the larva burrows into the fruit.
They have several natural enemies, but none reliably suppress damage. It
is difficult to scout for this insect and predict its appearance.
Pollinators, particularly bees, are very important in cucurbit
production, and insecticide application can interfere with pollination
by killing bees. If insecticides are to be applied when blossoms are
present, it is advisable to use insecticides with little residual
activity, and to apply insecticides late in the day, when honeybee
activity is minimal.
Beneficial Insect Mix
-A blend of lady bugs, parasitic wasps and other predatory carnivorous insects which have proven effective in reducing populations of many species of worms and various garden pests.
Pyrethrin
Celery worm
The large larva of the black swallowtail butterfly,
{Papilio polyxenes
asterius Stoll}, is an occasional feeder on carrot foliage, and other
crops. Generally not a major problem, the 2-inch, dark green caterpillar
has a black encircling band on each segment and a pair of orange horns
that can be protruded from behind the neck when disturbed. ---
Pyrethrin
{}
Controls
Bacillus Thuringiensis Thuricide
Diazinon
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Webworms
Larvae of small moths that complete several generations per year
these worms are about 3/4 inch in length, and have light green
coloration with numerous black spots. As they develop, webworms spin
silken webs over plant terminals, then feed on leaves, buds, and
blossoms within the webs. Although extensive defoliation may not result
from their feeding, webworms often consume fruiting structures and their
webs interfere with pollination and seed set. Infestations by these
worms can result in serious losses in seed production.
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Leek Moth
The leek moth (a/k/a onion leafminer), is a pest of several species of Allium. native to Europe, The distribution of the pest includes Asia, Africa, Europe, and North
America. Where generations are limited to 1-2 per year, the pest is sporadic and
causes little damage.
The leek moth attacks leeks (Who would have guessed ? ) as well as
garlic, chives, green onions,, shallot, and some related plant species.
The larvae will tunnel mines in the leaf tissue, sometimes causing
distortion, and are reported to occasionally attack the bulb and stems.
See Also Leafminer
Controls
Bacillus Thuringiensis Thuricide
Diazinon
Predators / Natural
Control
Trichogramma Pretiosum
Corn Borers
The European Corn borer larvae are 3/4 to 1 inch in length
and creamy-white to pink in color. The head capsule is dark
brown and, on top of each abdominal ring or segment, there
are several small dark brown or black spots . Pupae vary from 1/2 to 3/4 of an inch in length, are torpedo
in shape, and range in color from reddish-brown to
dark-brown. The moth has a wingspan of about one-inch, with
the female being slightly larger than the male. The wings
are dusky-yellow in color and bear transverse, irregular,
olive-green bands . Male wings are often darker in color. The females typically lay 15 to 30 eggs in masses and may
lay up to 500 eggs over their lifetime. Egg masses usually
are laid on the underside of corn leaves and are about 3/4
of an inch in diameter .
Moths become active in the evening mating and laying eggs.
they spend the day hiding in protected areas. In addition to corn, They feed on over 300 different plants,
including green peppers, and bush beans.
The South Western Corn borer is a more difficult insect to
control. It has two to three generations per year. First
generation infestations do not often cause much damage.
Second and third generation larvae can be devastating. First-generation feeding include small holes, and small
circular lesions in leaf tissue. Second-generation larvae tunnel extensively through the
plant.
Blueberry Tip Borer
A tiny moth that emerges sometime in
early Summer and deposits eggs on the undersides of tip leaves. The
larvae bore into the plants woody section forming a channel
several inches in length which causes the shoot to wilt and die
back.
Blueberry Stem
Borer
In
late June / early July, the first three to four inches of the
current season's growth may wilt or be destroyed by this pest. this
can occur on large, rapidly growing suckers or on small,
slow-growing twigs. An examination of the injured twig reveals
girdling in two places, about 1/2 inch apart, caused by egg
deposition.
The other injury is the dying out of canes. The leaves first
turn from green to yellow or reddish green and drop off, and the
cane dies. Close examination may show pinholes at 3- to 4-inch
intervals along the shoot and yellowish strings of castings hanging
from them. The cane, when split, contains a yellowish, legless grub,
1/2 to 1 inch long, at the end of a long tunnel.
Controls
Bioneem Insecticide: Concentrate
is a safe bio-control
recommended against these pests
Praying Mantids
Are
effective against the moth
Cabbage Looper
The cabbage looper larvae are a light
green color with faint stripes down their backs. They reach approximately 1½ inches long and have three pairs
of slender legs near the head and three pairs of larger legs at the
rear end. The middle section is legless and is looped when the insect
is moving. (Inch-worm style)
Larvae are the damaging stage of this insect. Worms feed on
the undersides of leaves between the veins and leave ragged holes.
They also feed on cabbage, cauliflower and broccoli heads. They can
be present from early spring to late fall.
Controls
Bacillus Thuringiensis Thuricide
Pyrethrin
Leaf Rollers
Leaf rollers are small
greenish to green/brown caterpillars (moth larvae) that feed on
leaves, buds and fruit ..they're the worm in your apple .(Or 1/2
worm as the case may be) .Some of the more prevalent and
bothersome varieties include red banded leaf roller, fruit tree
leaf roller, oblique banded leaf roller, variegated leaf roller,
omnivorous leaf roller.
Leaf rollers larvae feed on both fruit and foliage. Foliar injury
is generally not a major concern.
Larvae may seal leaf surfaces together and live between them or
fold leaves together and live in the folds. Larvae also feed within berries and fruit (The worm in your
apple ) and may not be noticed until harvest time, or at
consumption.
Young larvae feed on unfolded leaves. Older larvae fold the
leaves in half and hold them in place with webbing. Damage
results from the larvae feeding within the folded, rolled or
webbed leaves, causing them to turn brown and die.
Monitoring should begin early. Look for folded or
rolled leaves among the plants. (Fig.1)
The leaves may be discolored or show some feeding
damage such as small holes in the leaves. Pick the
rolled leaves carefully and examine for leaf roller
larvae. If the rolled leaves do not have any larvae
present, it is too late to control the larvae. Now
you will be dealing with the adults, spraying would
be ineffective and costly at this time.
Controls
Bioneem Insecticide: Concentrate
is a safe bio-control
recommended against these pests
Pyrethrin
Only under extreme
conditions should spraying be necessary. Healthy
plants have an abundance of leaves and the loss of a
small percentage will have little if any effect .
My primary concern has always been ...the worm in my
Apple, or ...
Higher populations may coincide with fruiting and may cause
severe damage but this is rare. Bio-controls are recommended to
keep populations in check.
Cutworms
Cutworms are larvae of of a large
family of dull-colored , night-flying moths, often visible around lights
in Spring, They come in various colors, but are generally a dull gray
and well camouflaged within the soil. They are soft-bodied, hairless
caterpillars that curl up when touched. Fully grown, they are less
than 2 inches long. (Fig. 1)
Their life cycle consists of egg - larva- pupa and adult.
One generation is produced each year. Eggs overwinter on the tip of
grass blades or on the top layer of soil.
Army Cutworms (Armyworms) travel in
great numbers. They could be grey, brown or black, striped, black sided,
yellow-headed and greasy. They hide under the soil surface during the day, but are voracious night
feeders.
On top of the soil they cut through seedlings or devour leaves, leaving
only the stem. Some varieties infest Fruit Trees, Vines and Berry
Bushes. A few varieties feed on roots causing plants to wilt and die.
Cutworm Damage (Fig.2)
Usually larvae chew young
plants off at the base at or near ground level. When you see a
freshly severed plant, carefully stir the soil around it and you
can usually find and destroy the culprit before it can move to
the next plant. Sometimes you will find more than one cutworm in
the immediate area ....Plants are often cut off completely at or
just below the soil surface giving the appearance of a freshly
mowed a
Controls
Bacillus Thuringiensis Thuricide
is a safe bio-control
recommended against these pests
Diatomaceous Earth is a highly effective
preemptive
device against further infestation.
Organic Pest Control: Diatomaceous Earth Mastergardening Brand 3.6 lbs
Predators / Natural
Control
Praying Mantids
Most
cutworms are night feeders, The Mantid (Mantis) hunts at
night (As well as day)
Beneficial Nematodes
are useful against cutworms as
They hide under the soil surface
during the egg and larva stages.
Their favorite garden menu consists of
Corn,
Tomato, pepper, cabbage, peas, beans, and squash.
They also feed on Potatoes, Cauliflower, Misc.
greens, Melons and Onions
They avoid plants with woody stems.
Wireworms
Wireworms are the slender, yellowish-brown,
hard-bodied larvae of various beetles There are many species of
wireworm , various species attack Beans,
Carrots, beet, celery, lettuce,
onion, sweet potato, turnip, and mustard
. These worms reek their havoc by puncturing and
tunneling stems, roots and tubers.
Carrots are a particular favorite.
They also feed on the seeds prior to germination
or shortly after germination. If the plants do germinate at all they
will continue to deteriorate, because wireworms bore into
underground portions of the stem causing further wilting and
ultimately death.
They continue to feed upon the small roots of
many plants throughout the season. Wireworm larvae are generally
hard, burnt brown, smooth, varying from 1/2 to 1-1/2 inches in
length when full grown. Some species are soft, and white or
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