Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00063
 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: Mid June 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: VID00063
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
3/ CITRUS EXPERIMENT STATION
LAKE ALFRED, FLORIDA *-*
5 CES Mimeo Series 69-34
-3 CITRUS INSECT AND DISEASE SUMMARY
MID-JUNE 1969

Statewide Index of Abundance
End Mid End Mid
Trend Trend
May June May June
2.0



1 A Rust mite ,7Black sc.
-1.5-
'6" High for
mites M-Whitefly
mt ---'7Mealybug
High for .,.-'- -->Glover sc
.0 C. red mite scales,--
N~. scales,
-0,-- -- > whitefly,
--- -- mealybug a /

-0.5 Texas c. mite x

HUME LIBRARY


JUN 23 1QG9
NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.
Rust Mite: 65% of groves infested (Norm 45%); 44% economic c.N 2LJ)i. Of Florida
Population decreased but is still in the high range and a ove nLunlal. ALl upward
trend is starting and is expected to continue through July. Heavy infestations will be
more numerous than average in most districts. Highest districts are West (1.86)
North (1.81) South (1.58) and Central (1.38). East (.40) is especially low.
Texas Citrus Mite: 36% of groves infested (Norm 69%); 20% economic (Norm 47%).
Population is at the lowest mid-June level in 10 years. Although increase is ex-
pected, this mite will remain below normal abundance. Highest district is North (.88).
Citrus Red Mite: 46% of groves infested (Norm 63%); 26% economic (Norm 38%).
This mite is also below normal abundance and is expected to continue near the
current moderate level.
Glover Scale: 84% of groves infested (Norm 86%); 16% economic (Norm 30%).
Population entered the high range but is below normal. Increase is expected.
Highest district is South (1.19), others slightly lower.
Purple Scale: 67% of groves infested (Norm 81%); 6% economic (Norm 11%).
Population will remain subnormal and moderate.
Chaff Scale: 50% of groves infested (Norm 70%); less than 1% economic (Norm 15%).
Population will remain below normal and low.
Yellow Scale: 70% of groves infested (Norm 68%); 4% economic (Norm 11%).
Population is below normal and moderate with little change expected.
Black Scale: 62% of groves infested (Norm 69%); 36% economic (Norm 49%).
Population has reached the high range and the current upward trend will continue.
The statewide population is not expected to exceed the normal level. There is wide
variation among districts: East (2.32) South (1.50) Central (1.04) West (.67) and
North (.37).
Snow Scale: 18% of groves infested; 4% with moderate to heavy infestation. Increase
is expected.
Whitefly: 74% of groves infested; 40% economic. Population is above normal and in the
high range with further increase expected.
Mealybug: 60% of groves infested; 27% economic. Population is near the normal level
for June. It will increase further, enter the high range in late June and remain high
through July.
Spray Notes: Now is the time to take inventory of citrus insects and mites in advance
of the summer spray application. If only rust mites are numerous at this time it may be
advisable to apply sulfur and postpone the summer spray for 3 weeks. Whitefly, mealybug
and black scale all cause sooty mold buildup and should be controlled promptly where
numerous, especially on crops for the fresh fruit market. Glover, purple, and chaff
scales also should be controlled promptly, if numerous, as they can cause green spots
that downgrade fresh fruit.


625 WAS June 16, 1969


W. A. Simanton




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