Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00020
 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 May 1967
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: VID00020
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

CITRUS INSECT AND DISEASE SUMMARY
END OF MAY 1967


CES Mimeo Series 67-32


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

Rust Mite on Leaves: 53% of groves infes..d (Norm 36%); 44% economic (Norm 19%).
Population decreased but is still near the high range and at the highest level on
record for May. Little change is expected until the summer increase starts in late June.
Highest districts are Central (1.57) South (1.50) and North (1.20).
Texas Citrus Mite: 76% of groves infested (Norm 54%); 56% economic (Norm 34%).
Population attained a new record high level for May. Further increase expected
through June will keep population well into the high range. All districts are high:
South (2.04) North (1.80) West (1.67) Central (1.58) and East (1.55).
Citrus Red Mite: 58% of groves infested (Norm 57%); 26% economic (Norm 43%).
Population of this mite will increase into the high range late in June but is not
expected to exceed normal level for the period. Highest district is East'(1.15).
Glover Scale: 88% of groves infested; 32% economic. Population is above normal and in
the high range. Further increase is expected. Highest districts are East (1.52) South
(1.52) Central (1.44) and West (1,00),
Purple Scale: 84% of groves infested; 9% economic. Population is near normal and in the
moderate range. Little change is expected. Very few infestations will be important.
Highest district is Central (1.15).
Black Scale: 43% of groves infested; 22% economic. Rapid increase is now underway and
population will enter the high range by mid-June. A peak near average level is expected
about mid-July. Highest districts are East (1.62) and West (,92).
Chaff Scale; 72% of groves infested; 8% economic. Population is below average and in
the moderate range. Slight increase is expected through June. Highest districts are
Central (1.11) and East (.90).
Snow Scale is present in 11% of survey groves and is spreading and increasing.
Yellow Scale: 69% of groves infested; 2% economic. This scale will occur only as light-
'to moderate infestations aid be less important than in the past 2 years. Highest district
is Central (.85).
9Whiteflies: 62% of groves infested; 22% economic. The larval form will be present in
above normal numbers during June and population may enter the high range.


IMoalyb I: 50% of groves infested; 8% economic.
the high range in late June. Infestations will
-with heavy infestations expected in 5 to 10% of


Population will increase rapidly and enter
be about as numerous as in the past 2 years
groves.


S ir 0 Notes: Now is the time to take inve..ory of citrus insects and mites in advance.of
the summer spray season, Glover scale has built up heavy infestations in the interior of
trees in many groves. Purple scale and chaff scale often occur with Glover scale. All
three weaken wood, drop leaves, and cause green spots on fruit so the combined population
should be considered. Also inspect interior limbs for'snow scale.


b 700 June 7, 1967 WAS


W, A. Simanton




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