Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00069
 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 September 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: VID00069
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

3O
ES CITRUS EXPERIMENT STATION CES Mimeo Series 70-9
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF SEPTEMBER 1969

Statewide Index of Abundance
End Mid End Trend End Mid End Trend
2.0 Aug. Sept. Sept. Aug. Sept. Sept.

----------------^-


1.5-- Rust mite
High for
mites Whitefly

1.0 High fo
scales,
whitefly 7
whit y Black scale

0.5 C. red mite ---- 7
O O ----Glover scal
0 0
C0- -D----


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

Rust Mite: 80% of groves infested (Norm 57%); 61% economic (Norm 35%).
Current population is the highest for September in 18 years of record. It will con-
tinue to remain much above average and in the high range. Little change is expected.
Infestations are of similar magnitude on leaves and on fruit. Highest districts are West
(2.38) South (2.17) North (1.79) and Central (1.70).
Texas Citrus Mite: 18% of groves infested (Norm 16%); 3% economic (Norm 3%).
Population is in the normal low range for September. Slight increase is expected.
Highest district is South (.35).
Citrus Red Mite: 28% of groves infested (Norm 23%); 7% economic (Norm 5%).
Population is slightly above normal and in the low range. Gradual increase is ex-
pected. Highest district is West (.73).
Glover Scale: 55% of groves infested (Norm 50%); 2% economic (Norm 8%).
Population is near normal and at moderate level. Most infestations are light.
Slight increase is expected. Highest districts are North (.73) and West (.73).
Purple Scale: 43% of groves infested (Norm 46%); 2% economic (Norm 2%).
This scale is near the normal low level in all districts and will remain unimportant.
Chaff Scale: 32% of groves infested (Norm 30%); 2% economic (Norm 2%).
Population will remain at the current normal and low level in all districts.
Yellow Scale: 43% of groves infested (Norm 46%); 4% economic (Norm 6%).
Population is near normal and low. Slight increase is expected. Highest district
is North (.80).
Black Scale: 59% of groves infested (Norm 37%); 31% economic (Norm 15%).
This scale has recently dropped from the high range but population is still above
normal for September. Further decrease is expected. Highest districts are Central (1.61)
and North (.93).
Snow Scale: 20% of groves infested; 6% have moderate to heavy infestations. This scale
is expected to remain active and produce crawlers.
Whitefly: 77% of groves infested; 167 with moderate to heavy infestations. Population
is above average for September and may increase to high level in October.

Spray Notes: The 30-day weather outlook is for above average temperature and rainfall.
If brown rot should appear, a spray of 3.5 lbs. of 53% tribasic copper sulfate (or equi-
valent) per 500 gals. will give some control if applied immediately to cover the entire
tree. Chopping the cover crop will promote ventilation and reduce humidity.


600 October 17, 1969 WAS


W. A. Simanton




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