Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00060
 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 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: VID00060
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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CITRUS EXPERIMENT STATION
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF APRIL 1969


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 63%); 50% economic (Norm 40%).
Population is increasing and will continue to be above normal and in the high range.
District levels are West (1.93) North (1.92) South (1.91) Central (1.19) and East (.79).
Texas Citrus Mite: 31% of groves infested (Norm 49%); 14% economic (Norm 24%).
Population increased but is still below normal and at low level. Little change is
expected. Highest districts are Central (.71) and East (.57).


Citrus Red Mite: 34% of groves infested
Population of this spider mite also
is expected and will result in scattered
East (.62) and South (.56).


Six-spotted Mite:
Population is
tions are expected


(Norm 49%); 12% economic (Norm 19%).
is below normal and in the low range. Increase
heavy infestations. Highest districts are


8% of groves infested; 2% economic.
near the average level of the last 4 years. Scattered heavy infesta-
through May.


Glover Scale: 77% of groves infested (Norm 82%); 10% economic (Norm 25%).
Population is below average and in the moderate range. Increase is expected.
Highest districts are South (1.12) and East (.91).
Purple Scale: 74% of groves infested (Norm 82%); 5% economic (Norm 11%).
This scale also is below normal abundance and in the moderate range. Although
decrease will occur, very few heavy infestations are expected. Highest district is
North (.94).
Yellow Scale: 77% of groves infested (Norm 64%); 6% economic (Norm 9%).
Population is near normal and in the moderate range. Slight increase is expected.
Highest district is North (1.00).
Chaff Scale: 40% of groves infested (Norm 60%); 2% economic (Norm 11%).
Little change is expected from the current low and subnormal population level.
Highest district is North (.55).
Black Scale: 14% of groves infested (Norm 26%); 3% economic (Norm 10%).
Population is at the lowest April level since 1963. This portends a much lower
summer population despite a sharp increase expected late in May. Highest districts are
East (.45) and West (.43).
Snow Scale: 17% of groves infested; 7% with moderate or heavy infestations. Population
is at a record high level and activity is increasing.
Aphids: 82% of groves infested (Norm 32%); 21% economic (Norm 2%).
Population peaked a few days after mid-April and reached the highest level in
18 years of record. A rapid decrease is expected to return population level to the low
range before mid-May.
Mealybug is currently present as light infestations in 12% of groves. Increase is expected.


625- May 5, 1969 WAS


CES Mimeo Series 69-29






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