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How to Manage Pests
UC Pest Management Guidelines
Citrus
Citrus Flat Mite
Scientific Name: Brevipalpus lewisi
(Reviewed 7/03,
updated 7/03)
In this Guideline:
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DESCRIPTION OF THE PEST
The flat mite is a minor pest of
citrus in the desert regions and interior valleys. The adult is much smaller
than the citrus red mite, is flat, and often appears salmon colored but varies
in color. The flat mite is usually a secondary invader, feeding on rind tissue
damaged by leafhopper feeding, thrips oviposition, or wind.
DAMAGE
Citrus flat mite feeding results in a scabbing of the injury caused by thrips
and leafhoppers, which would otherwise disappear as the fruit change color. The
flat mite is fairly heat tolerant, so populations persist during the hot
summer.
MANAGEMENT
No treatment thresholds have been established. Treat when high mite levels
appear and monitoring for fruit scarring indicates a need.
Common name
(trade name) |
Amount to Use
(type of coverage)** |
Minimum Days
before Harvest+ |
|
| A. |
WETTABLE SULFUR# |
60 lb/acre (TDC) |
1 |
| |
RANGE OF ACTIVITY:
Narrow (mites and citrus thrips) |
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PERSISTENCE: Intermediate |
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COMMENTS: For use on all varieties. Apply from Oct thru
May when monitoring indicates a need. Do not apply more than 6 lb/100
gal water. Do not apply during or preceding high temperatures. Do
not apply sulfur within 2 months of a previous oil spray, and do not
apply oil 60-90 days after a sulfur treatment. Not recommended for
use in the San Joaquin Valley. |
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| B. |
DICOFOL |
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(Kelthane MF) 4EC |
0.4 pt/100 gal (TDC) |
7 |
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RANGE OF ACTIVITY:
Narrow (pest and beneficial mites) |
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PERSISTENCE: Long |
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COMMENTS: For use on all varieties. Closed application
system required with this material. Can cause secondary outbreaks
of citrus red mites. Do not exceed 6 pt/acre. |
| ** |
TDC - Thorough distribution coverage
uses 500-3,000 gal/acre, but less than thorough coverage (TC). |
| + |
Minimum days before harvest takes into
account the California restricted entry interval and the federal preharvest
interval and lists the longer interval. (See Table 1 Mandatory
Intervals Between Application, Reentry and Harvest, and Hazards to
Bees.) |
| # |
Acceptable for use on organically grown
produce. |
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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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