Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00095
 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 January 1971
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: VID00095
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

r7 CITRUS EXPERIMENT STATION
/ LAKE ALFRED, FLORIDA CES Mimeo Series 71-17
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF DECEMBER 1970

Statewide Index of Abundance
II I _____ I I 1 -
End Nov. Mid Dec. End Dec. Trerd nd Nov. Mid Dec. End Dec. Trend

0- v,' Rust Mite Lvs.
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Frt.
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ust mite .rA.S. Univ. of Florida

0igh for
cales; white- --_ Glovr Sc
lCy; winter --> Purp e Sc
iCgh for _v ----- > WFLY L
--- RM & TCM
5 - -- -Yellhw Sc
5-3 --> -8- [-- 5z Snow Sc

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.

Citrus Rust Mite: 78% of groves infested (Norm 62%); 62% economic (Norm 43%).
Population decreased but is still above normal and in the high range on both leaves
and fruit. Further decrease is predicted. Highest districts are West (2.20) South (2.18)
Central (1.86) and North (1.41).
Citrus Red Mite: 44% of groves infested (Norm 35%); 16% economic (Norm 12%).
Population increased and is now above the normal low level. Although most infesta-
tions will be light a few heavy infestations may be expected in scattered groves. High-
est districts are Central (.83) and West (.75).
Texas Citrus Mite: 31% of groves infested (Norm 38%); 12% economic (Norm 14%).
This mite is in the low range and below normal abundance for year-end. Slight de-
crease is expected. Highest districts are Central (.90) and East (.41).
Glover Scale: 83% of groves infested (Norm 68%); 6% economic (Norm 11%).
Population is slightly above normal and in the moderate range. Infestations
generally will be numerous but most will be light. Highest districts are North (1.03)
and South (1.00).
Purple Scale: 77% of groves infested (Norm 69%); 6% economic (Norm 6%).
This scale is at moderate level and near normal abundance. Little change is
predicted. Highest districts are West (1.00) and North (.96).
Black Scale: 38% of groves infested (Norm 40%); 14% economic (Norm 16%).
Recent periods of freezing weather have reduced population to the low level normal
for year-end. Further decrease is expected. Highest districts are West (.94) and
Central (.90).
Yellow Scale: 41% of groves infested (Norm 62%); 4% economic (Norm 11%).
Population will remain low and below normal despite a predicted increase. Highest
district is East (.87).
Chaff Scale: 42% of groves infested (Norm 51%); 2% economic (Norm 6%).
Population will remain low and below normal in all districts.
Snow Scale: 25% of groves infested; 14% with moderate or heavy infestation. Population
decreased slightly in December. Increase is expected in January.
Whitefly: 65% of groves infested (Norm 69%); 3% economic (Norm 14%).
Population dropped below normal and into the low range for the first time since
September 1969. It will remain low. Highest districts are East (1.09) and West (.94).
Spray Notes: Snow scale infested limbs are likely to harbor tiny orange colored scale
crawlers even in winter months. Crawlers can be transported on pickers' clothing and
equipment. An overnite interval is advisable when moving pickers from infested to non-
infested groves.

THE NEXT ISSUE OF THIS SUMMARY WILL BE RELEASED EARLY IN FEBRUARY.


600 January 5, 1971 WAS


W. A. Simanton




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