Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00071
 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 October 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: VID00071
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 70-12
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF OCTOBER 1969

Statewide Index of Abundance
I I I I I I
Mid Oct. End Oct. Trend Mid Oct. End Oct. Trend
-2.0


-- . .

1.5 Rust mite

High for
mites 7_ --)-> Whitefly

_1.0 High for
scales,
whitefly ___ > Black sc
.--.----> Glover s
C. Red mite
0.5
O ----


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: 74% of groves infested (Norm 70%); 61% economic (Norm 49%).
Population continued above normal and in the high range. Little change is expected.
Highest districts are West (2.40) North (2.24) South (1.81) and Central (1.77).
Texas Citrus Mite: 24% of groves infested (Norm 23%); 6% economic (Norm 7%).
Population is normal and low. Slight increase is expected. Highest district is
Central (.46).
Citrus Red Mite: 31% of groves infested (Norm 28%); 8% economic (Norm 7%).
Population is near normal and in the low range. Gradual increase is expected.
Highest district is West (.80).

Glover Scale: 62% of groves infested (Norm 62%); 4% economic (Norm 9%).
Population decreased and is now below normal and in the low range. Little change is
expected. Highest districts are North (.79) and West (.70).
Purple Scale: 54% of groves infested (Norm 56%); 4% economic (Norm 3%).
Population is normal and low with little change expected. Highest district is
North (.79).
Chaff Scale: 39% of groves infested (Norm 41%); 3% economic (Norm 4%).
Population increased but will remain in the low range in all districts.
Yellow Scale: 47% of groves infested (Norm 55%); 5% economic (Norm 9%).
This scale is below normal abundance and will remain at low level in most districts.
Highest district is North (.83).
Black Scale: 51% of groves infested (Norm 32%); 25% economic (Norm 10%).
Population is the highest for October in 18 years of record. It is expected to
continue near the current moderate level until cool weather slows activity. Highest
districts are Central (1.41) West (1.20) and East (.83).
Snow Scale: 24% of groves infested; 9% with moderate to heavy infestation. Population
is at a record high level and will continue to increase.
Whitefly: 81% of groves infested (Norm 68%); 34% with moderate to heavy infestations
(Norm 12%). Population is in the high range and is the highest on record for October.
It nearly equals the record for any month in the past 18 years. Decrease is expected
after mid-November. Highest districts are East (1.91) North (1.45) and West (1.00).
Melanose: The October index for melanose lesions on leaves and fruit is close to the
long term average index.
Fruit splitting, a physiological disorder, occurred in 25% of groves in October 1969
and was severe in 6% of groves. In October 1968 splitting occurred in 5% of groves and
was not severe.


600 WAS November 4, 1969


W. A. Simanton




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