Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00039
 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: End April 1968
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: VID00039
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
CITRUS EXPERIMENT STATION
LAKE ALFRED, FLORIDA


CES


Mimeo Series 68-28


CITRUS INSECT AND DISEASE SUMMARY
END OF APRIL 1968


Statewide Index of Abundance


Mid
Apr.


End
Apr.


Trend


Rust mite


Hih- for
High for


-1.0 Texas C. mite


-d mi

-0.5 0 C. red mite


mites

High for
scales


Mid
Apr.


End
Apr.


Trend


Scales


i .-- _.- -> Glover


I i 4 I
NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.
Rust Mite: 74% of groves infested (Norm 62%); 45% economic (Norm 39%).
Population is still above average and in the high range. Mites are increasing on
new leaves and new fruit. Highest districts are Central (1.84) South (1.65) West (1.60)
and East (1.50).


Texas Citrus Mite:
Population is
range is expected.


52% of groves infested (Norm 48%); 25% economic (Norm 24%).
near normal and in the moderate range. Strong increase into the high
Highest districts are East (1.32) and South (1.27).


Citrus Red Mite: 48% of groves infested (Norm.49%); 22% economic (Norm 19%).
Population is near normal and moderate. A sharp increase is expected where dry con-
ditions prevail Highest districts are East (1.32) and West (1.07).
Six-spotted Mite: 4% of groves infested; 1% economic. This mite is increasing slightly
but population is expected to remain low and scattered.
Glover Scale: 77% of groves infested (Norm 82%); 10% economic (Norm 29%).
Population is the lightest in several years. It is expected to increase slightly-
and may enter the high range. Highest districts are East (1.35) and Central (.94).


Purple Scale: 70%
Population is
expected. Highest


of groves infested (Norm 83%); 1% economic (Norm 13%).
the lowest recorded for April in 17 years of record. Little change is
district is West (.88).


Chaff Scale: 39% of groves infested (Norm 70%); 3% economic (Norm 13%).
This scale will remain subnormal and at low level despite an expected increase.
Highest district is South (.62).
Yellow Scale: 65% of groves infested (Norm 62%); 2% economic (Norm 10%).
Population is below normal and in the low range with little change expected.
Highest district is Central (.81).
Black Scale: 39% of groves infested (Norm 24%); 12% economic (Norm 10%).
This scale is still low in most districts but is above average for April. Increase
will start in May and accelerate in June. Highest district is East (1.17).


Snow Scale:
April 1967.


15% of groves infested. Infestations are more numerous but lighter than in
They are expected to become heavier and of greater importance.


Aphids: 26% of groves infested (Norm 32%). Population is below normal and decreasing.
Whitefly: 61% of grcves were infested with adults,and egg deposition was high. The
destructive larval stage currently is at the normal low level but will increase.
Mealvbugs are now at low level but will increase. Fulgorid hoppers, now present on tender
growth in scattered groves, form cottony colonies and are sometimes confused with mealybugs.
Spray Notes: With harvest of Valencia and late bloom crops of other varieties underway,
it is important to observe the required waiting periods following the postbloom spray
application. Cor.ult the 1968 Florida Citrus Spray and Dust Schedule for details.


600 May 3, 10.68 WAS


W. A. Simanton


I ,




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