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How to Manage Pests
UC Pest Management Guidelines
Cucurbits
Flea Beetles
Scientific Names: Epitrix spp.
(Reviewed 11/05,
updated 6/08)
In this Guideline:
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Flea beetle adults are
small, ranging in size from 0.06 to 0.12 inch (1.5 to 3 mm) long. These insects
derive their name from their well-developed hind legs; when disturbed they jump
like fleas.
Adult beetles chew small
holes in leaves, giving them a sievelike appearance. The small, slender, white larvae
feed on underground parts of the plant. On rare occasions, flea beetles may
feed directly on ripe fruit, just below the calyx. This damage is usually seen
only in late season plantings that show extreme foliar stress resulting from
lack of water or powdery mildew.
Eliminate plant stress from insufficient moisture and powdery
mildew. If field monitoring at the time of ripening shows feeding signs on
fruit, base treatment decisions on the severity of damage.
| Common name |
Amount/Acre |
R.E.I.+ |
P.H.I.+ |
| (trade name) |
|
(hours) |
(days) |
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| When choosing a pesticide, consider information relating
to water quality and impact on natural
enemies and honey bees. Not all registered pesticides are listed. Always read label of product being used.
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| A. |
CARBARYL* |
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(Sevin) 80S |
1.25 lb |
12 |
3 |
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MODE OF ACTION GROUP NUMBER1: 1A |
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COMMENTS: Observe plant response precautions listed on label. Avoid excessive applications. Highly toxic to honey bees. |
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(Sevin) 10 Dust |
5-10 lbs |
12 |
3 |
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COMMENTS: Observe plant response precautions. Avoid excessive applications. Highly toxic to honey bees. |
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| B. |
ENDOSULFAN* |
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(Thionex) 3EC |
0.66–1.33 qt |
24 |
2 |
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(Thionex) 50WP |
1–2 lb |
24 |
2 |
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MODE OF ACTION GROUP NUMBER1: 2A |
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COMMENTS: Do not exceed 3 applications/year. Observe all
precautions on label when applying this material. Moderately toxic to honey bees. |
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| C. |
METHOMYL* |
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(Lannate) 90SP |
0.5–1.0 lb |
48 |
1 (0.5 lb or less) |
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3 (more than 0.5 lb) |
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(Lannate) LV |
1.5–3 pt |
48 |
1 (1.5 pt or less) |
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3 (more than 1.5 pt) |
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MODE OF ACTION GROUP NUMBER1: 1A |
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COMMENTS: Labeled for use on cucumbers, melons, and summer
squash only. Use on pumpkins allowed under a Special Local Needs label. Highly toxic to honey bees. |
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| D. |
CRYOLITE |
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(Kryocide) 96W |
8–12 lb |
12 |
Summer squash: 7 |
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Winter squash, cucumber, melons, pumpkins: 14 |
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MODE OF ACTION GROUP NUMBER1: 9A |
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COMMENTS: Labeled for use on cucumber, squash, melons, and
pumpkins. Can be applied as a spray or dust. Thorough coverage using ground
equipment is necessary for adequate control. Do not apply immediately before
harvest. Remove excess residues on edible portions by washing, brushing, or
other effective means. Effectiveness of this material is lower than materials listed above. |
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. . . or . . . |
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(Prokil Cryolite 96) |
10–16 lb |
12 |
Summer squash: 7 |
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Cantaloupe, watermelon, |
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winter squash: 14 |
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COMMENTS: Labeled for use on cantaloupe, squash, and watermelon.
Applied as a spray. Thorough coverage using ground equipment is necessary for
adequate control. Do not apply immediately before harvest. Remove excess residues
on edible portions by washing, brushing, or other effective means. Effectiveness of this material is lower than materials listed above. |
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UC IPM Pest Management Guidelines: Cucurbits
UC ANR Publication 3445
Insects and Mites
E. T. Natwick, UC Cooperative Extension, Imperial County
L. D. Godfrey, Entomology, UC Davis
C. G. Summers, Entomology, UC Davis/Kearney Agricultural Center, Parlier
J. J. Stapleton, UC IPM Program, Kearney Agricultultural Center, Parlier
Acknowledgment for contributions to Insects and Mites:
R. L. Coviello, UC Cooperative Extension, Fresno County
C. B. Fouche, UC Cooperative Extension, San Joaquin County
J. B. LeBoeuf, AgriData Sensing, Inc., Fresno
M. Murray, UC Cooperative Extension, Colusa/Glenn counties
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