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How to Manage Pests
UC Pest Management Guidelines
Citrus
Potato Leafhopper
Scientific Name: Empoasca fabae
(Reviewed 7/03,
updated 7/03)
In this Guideline:
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DESCRIPTION OF THE PEST
The potato leafhopper is a potential
pest of citrus in some areas, especially in groves near tomato fields, cotton
fields, or pastures in the San Joaquin Valley. It is a green,
slender insect with bristlelike
antennae and rows of spines along its hind legs. It breeds in large numbers on
wild plants and field crops. During late summer and fall, the leafhoppers may
migrate to citrus groves to spend the winter in the shelter of the trees.
DAMAGE
The potato leafhopper feeds on fruit by puncturing rind cells, causing
yellowish to light brown, roundish
scars on fruit. The scars are
particularly apparent on green fruit and resemble thrips oviposition sites
except they are more clustered and do not have darkened centers.
MANAGEMENT
Leafhoppers are not a problem every year. Use a yellow, sticky card, such as
the one used for the California red scale, or traps to determine if leafhoppers
are present. If you apply a Bordeaux spray in fall against brown rot and
Septoria, you may want to add some additional hydrated lime to repel
leafhoppers. Because this is a preventative treatment, it must be made before
migration into the grove occurs.
Common name
(trade name) |
Amount to Use
(type of coverage)** |
Minimum Days
before Harvest+ |
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| A. |
HYDRATED LIME# |
15-30 lb/100 gal (OC) |
12 hours |
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RANGE OF ACTIVITY:
Narrow (leafhoppers) |
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PERSISTENCE: Intermediate |
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COMMENTS: For use on all varieties. |
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UC IPM Pest Management Guidelines: Citrus
UC ANR Publication 3441
Insects, Mites, and Snails
E. E. Grafton-Cardwell, Kearney Agricultural Center, Parlier
J. G. Morse, Entomology, UC Riverside
N. V. O’Connell, UC Cooperative Extension, Tulare Co.
P. A. Phillips, UC IPM Program, UC Cooperative Extension, Ventura Co.
C. E. Kallsen, UC Cooperative Extension, Kern Co.
D. R. Haviland, UC Cooperative Extension, Kern Co.
Acknowledgments for contributions to the insect, mite, and snail section:
J. Barcinas, E. S. I., Corona, CA
R. Dunn, Badger Farming Co., Exeter, CA
J. Gorden, Pest Management Associates, Exeter, CA
H. Griffiths, E. S. I., Corona, CA
D. Machlitt, Consulting Entomology Services, Moorpark, CA
C. Musgrove, retired entomologist, Riverside, CA
K. Olsen, S & J Ranch, Pinedale, CA
T. Roberts, E. S. I., Corona, CA
J. Stewart, Pest Management Associates, Exeter, CA
P. Washburn, Washburn & Sons Citrus Pest Control, Riverside, CA
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