Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00055
 Material Information
Title: Citrus insect and disease summary
Series Title: AREC-LA Mimeo series
Physical Description: v. : ; 28-34 cm.
Language: English
Creator: Citrus Experiment Station (Lake Alfred, Fla.)
Agricultural Research and Education Center (Lake Alfred, Fla.)
Publisher: Citrus Experiment Station.
Place of Publication: Lake Alfred Fla
Publication Date: Mid February 1969
Copyright Date: 1966
Frequency: semimonthly
regular
 Subjects
Subject: Citrus -- Diseases and pests -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
periodical   ( marcgt )
 Notes
Issuing Body: Issued by the Citrus Experiment Station (Lake Alfred, Fla.) <July 1966-Jan. 1971, later called Lake Alfred (Fla.) Agricultural Research and Education Center, Feb. 1971-Aug. 1972>.
General Note: Description based on: Mid July 1966; title from caption.
General Note: Latest issue consulted: End of August 1972.
 Record Information
Bibliographic ID: UF00066150
Volume ID: VID00055
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 71265791
lccn - 2006229397

Full Text
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CES Mimeo Series 69-22


CITRUS INSECT AND DISEASE SUMMARY
MID-FEBRUARY 1969

Statewide Index of Abundance


Mid
Feb.


I
Trend


End
Jan.


I
Mid
Feb.


I
Trend


Rust mite Lvs

--
High for
rust mite

High for


Texas C. mite


C. red mite
C. red mite>


scales;
winter high
for CRM, TCM


Glover scale


0 Yellow scale


NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.


Rust Mite: 69% of groves infested (Norm 61%); 48% economic (Norm 42%).
Population increased and is again above normal and in the high range.
crease is expected. Infestations are of similar magnitude on leaves and on
est districts are South (2.08) West (2.00) North (1.63) and East (1.10).


Further in-
fruit. High-


Texas Citrus Mite: 27% of groves infested (Norm 31%); 15% economic (Norm 11%).
Population increased slightly but is still in the low range and near normal. Ad-
ditional increase and a few heavy infestations are expected. Highest districts are
Central (.52) and North (.47).
Citrus Red Mite: 27% of groves infested (Norm 36%); 9% economic (Norm 18%).
Population decreased and is expected to remain below normal and near the current low
level. Highest district is East (.59).

Six-spotted Mite: 6% of groves infested; none economic. Slight increase is expected.

Glover Scale: 70% of groves infested (Norm 78%); 4% economic (Norm 17%).
Purple Scale: 51% of groves infested (Norm 73%); less than 1% economic (Norm 13%).

Black Scale: 23% of groves infested (Norm 36%); 3% economic (Norm 15%).
Yellow Scale: 66% of groves infested (Norm 62%); 4% economic (Norm 15%).
Chaff Scale: 40% of groves infested (Norm 64%); less than 1% economic (Norm 9%).
All of the above scales are below normal population levels for February. All are
in the low to moderate range in all districts and are not expected to increase importantly
within the next month. Slight increase is indicated for Glover scale and yellow scale.
Snow scale continues to be present in 16% of groves but is temporarily inactive.
Whiteflies and mealybug are below normal February levels. Little change is indicated.
Aphids are expected to be less numerous than normal until mid-March; then increase rapidly.

Spray Note: Rust mite will continue to be a threat in many groves and may require treat-
ment before the postbloom period. Spraying should be avoided if possible while the
blossoms are open.
Meta-Systox-R (oxydemeton methyl) at 5 pints per 500 gallon is recommended for aphid
control on non-bearing trees that are not expected to bear fruit for 1 year. Systox
(demeton) at 5 pints per 500 gallon can be used to control aphids on orange, grapefruit
and lemon trees bearing fruit, but 21 y mutie between application and harvest.
Although these aphicides have a system tom perae of young foliage is
necessary for good results.


625 February 19, 1969 WAS


CITRUS EXPERIMENT STATION
LAKE ALFRED, FLORIDA


I
End
Jan.


-2.0


-1.0


W. A. Simanton




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