Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00082
 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 May 1970
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: VID00082
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
U v


7 3/ CITRUS EXPERIMENT STATION CES Mimeo Series 70-31
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
MID-MAY 1970

Statewide Index of Abundance
E I I I
End Mid End Mid
Trend Trend
-2.0 Apr. May Apr. May


Rust mite leaves

-1.5 A---- Hh Whitefly
'-- 7 High for ^
mites
V
1.0 High for _--7 Glover sc
C. red mite scales; .- --
.0O--- -_ -- whitefly
----O -----> Yellow sc

-0.5

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: 70% of groves infested (Norm 55%); 50% economic (Norm 35%).
Population is above normal on leaves and fruit. Leaf infestation is in the high
range and fruit infestation is at moderate level. Decrease is expected in May, fol-
lowed by an increase in June if the normal adequate rainfall occurs. Highest districts
are South (2.08) West (1.80) and Central (1.35).
Citrus Red Mite: 52% of groves infested (Norm 52%); 23% economic (Norm 26%).
Population increased and is now near normal and in the moderate range. Little
change is expected. Highest districts are West (1.08) and South (.86).
Texas Citrus Mite: 31% of groves infested (Norm 53%); 14% economic (Norm 29%).
This mite also increased but population is still in the low range and much below
normal. Further increase is expected. Highest district is South (.77).
Six-spotted Mite: 11% of'groves infested; 3% economic.
Population is near normal and generally in the low range except for a few scat-
tered heavy infestations. Increase is expected until mid-June with decrease thereafter.
Glover Scale: 85% of groves infested (Norm 82%); 12% economic (Norm 27%).
Population increased and is approaching the high range, but is still below normal.
Increase into the high range is expected. Highest districts are South (1.17) East
(1.00) North (1.00) and West (1.00).
Purple Scale: 73% of groves infested (Norm 81%); 6% economic (Norm 11%).
Yellow Scale: 64% of groves infested (Norm 65%); 4% economic (Norm 9%).
Chaff Scale: 44% of groves infested (Norm 68%); 3% economic (Norm 13%).
Black Scale: 9% of groves infested (Norm 32%); 2% economic (Norm 13%).
All 4 of these scales are below normal abundance. They are not expected to
increase importantly. Only a few heavy infestations are likely to occur.
Snow Scale: 26% of groves infested; 8% with moderate or heavy infestations. Population
is higher than in May of prior years. Little change is expected.
Whitefly: 76% of groves infested; 33% with moderate or heavy infestations. Population
of the larval form is the highest for May in 19 years of record. Increase is expected.
Mealybug population will increase from the present low level but is not expected to
become important until mid-June.
Spray Notes: Rust mite, whitefly and mealybug are the only pests likely to require
control before July. Spider mites may be a problem on young drouth weakened trees in
June. Because mealybugs can appear and increase very quickly, it is important to
spray before they become establi shPd inldr frut h Qitng and between fruits.
Parathion and Guthion are recommeeP f cr Eri $ :,ontTol.


600 May 20, 1970 WAS W. A. Simanton
600 May 20, 1970 WAS W.A. Simanton

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