Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00053
 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 December 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: VID00053
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


6-1


CITRUS EXPERIMENT STATION
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF DECEMBER 1968


NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.
Rust Mite: 56% of groves infested (Norm 62%); 43% economic (Norm 44%).
Population dropped to the moderate range and is slightly below average for year-end.
Further decrease is expected. Infestation on leaves is now quite similar to that on
fruit. Highest districts are South (1.68), West (1.62) and East (1.21).
Texas Citrus Mite: 26% of groves infested (Norm 40%); 8% economic (Norm 14%).
Population is below normal and in the low range. Although slight increase is ex-
pected, very few groves will have important infestations. Highest districts are
Central (.69) and East (.32).
Citrus Red Mite: 25% of groves infested (Norm 36%); 3% economic (Norm 14%).
This spider mite is in the low range and is at the lowest December level in 18 years
of record. Slight increase is expected. Highest districts are West (.47) and East (.37).
Glover Scale: 51% of groves infested (Norm 73%); 2% economic (Norm 14%).
Population is below normal and in the low range with little change expected.
Highest district is West (.88).
Purple Scale: 49% of groves infested (Norm 72%); less than 1% economic (Norm 7%).
This scale is at the lowest December level in 18 years of record.
Chaff Scale: 42% of groves infested (Norm 54%); less than 1% economic (Norm 7%).
Population will remain much below normal.
Yellow Scale: 53% of groves infested (Norm 64%); 2% economic (Norm 13%).
Population is the lowest for December since 1964 and most infestations are very
light. Slight increase is expected. Districts are quite uniformly infested, the
highest being West (.69).


Black Scale: 36% of groves infested (Norm 36%); 11% economic (Norm 16%).
Population is near average, low and spotty with little change expected.
districts are East (.95) and Central (.84).


Highest


Snow Scale: 15% of groves infested; 7% with moderate or heavy infestation. This scale
is at the highest level in 18 years of record. Increase is expected. Infestations are
very spotty.
Whitefly: 51% of groves infested; 12% moderate to heavy. Population is in the low range
and slightly below normal. Little change is expected.

NOTES: About 20% of groves will have heavy rust mite infestations which can blemish fruit
if not controlled promptly. Sprays applied in winter can include nutritional materials.

ON WEDNESDAY, JANUARY 29 THE CITRUS EXPERIMENT STATION WILL HOLD OPEN HOUSE FROM
1:00 TO 3:30 PM. THIS WILL CONCLUDE WITH A DEDICATION CEREMONY FOR THE NEW RESEARCH
LABORATORY BUILDING.

Former employees of the Station are invited to attend a "CES alumni" get-together
and barbecue at 5:00 PM that evening.


625 January 7, 1969 WAS


W. A. Simanton


CES Mimeo Series 69-19


(No Summary was issued
at mid-December)




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