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How to Manage Pests
UC Pest Management Guidelines
Cherry
American Plum Borer
Scientific Name: Euzophera semifuneralis
(Reviewed 11/09,
updated 11/09)
In this Guideline:
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The forewings of the adult
moth are
gray with brown and black markings. The wingspan in about 0.75 inch. Young
larvae are
white with a large, dark brown head. Mature
larvae are
about 1 inch long, dusky white, pinkish or dull green in color. Reddish
orange frass,
webbing, and gum pockets indicate their presence. They overwinter as mature
larvae in a cocoon within the tree. There are three to four generations each
year.
Larvae bore into the tree, leaving reddish
orange frass and gum pockets.
The boring is most damaging to the scaffold
crotches or
graft unions of young trees. Vigorous
trees will heal over, but with heavy, prolonged infestations, scaffolds
may break
with wind or a heavy crop.
Monitor young orchards in spring and summer for frass and gum
pockets. If larvae are present, spray trees from 1 foot above the scaffold
crotch to 1 foot below, two to three times during the growing season. The first
application should be mid- to late April and subsequent applications at 6-week
intervals.
| Common name |
Amount/Acre |
R.E.I.+ |
P.H.I.+ |
| (trade name) |
|
(hours) |
(days) |
|
| The following materials are listed in order of usefulness in an IPM program, taking into account efficacy.
When choosing a pesticide, also consider information relating to environmental impact. Not all registered pesticides are listed. Always read label of product being used. |
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| A. |
CHLORPYRIFOS* |
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(Lorsban Advanced, 4EC) |
1.5–3 qt/100 gal water |
4 days |
21 |
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MODE OF ACTION GROUP NUMBER1: 1B |
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COMMENTS: Use chlorpyrifos for the first
application. In Central Valley orchards where harvest is to begin in mid- to
late May, move treatment up to allow 6 days for preharvest interval. Apply as
a trunk spray, avoiding contact with foliage or premature leaf drop may
occur. Uniformly cover trunk and the wood of the lower branches. Do not make
more than 3 applications/season or allow meat or dairy animals to graze in
treated orchards. Avoid drift and runoff into surface water or choose
alternative materials. Chlorpyrifos has been found in surface waters at levels that violate federal and state water quality standards. |
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| B. |
DIAZINON* 50WP |
1 lb/100 gal water |
4 days |
21 |
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MODE OF ACTION GROUP NUMBER1: 1B |
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COMMENTS: Do not exceed 4 lb diazinon 50WP/acre. Avoid drift and tailwater runoff into surface waters. |
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| C. |
CARBARYL* |
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(Sevin) 80S |
3.75–5 lb/acre |
12 |
1 |
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MODE OF ACTION GROUP NUMBER1: 1A |
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COMMENTS: Do not exceed 17.5 lb Sevin 80S/acre. |
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UC IPM Pest Management Guidelines: Cherry
UC ANR Publication 3440
Insects and Mites
J. A. Grant, UC Cooperative Extension, San Joaquin County
J. L. Caprile, UC Cooperative Extension, Contra Costa County
W. W. Coates, UC Cooperative Extension, San Benito County
R. A. Van Steenwyk, Insect Biology, UC Berkeley
K. M. Daane, Kearney Agricultural Center, Parlier
Acknowledgment for contributions to Insects and Mites:
J. Colyn, Mid-Valley Ag. Services
M. Devencenzi, Devencenzi Ag. Pest Mgmt. and Research
P. McKenzie, Mid-Valley Ag. Services
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