Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00109
 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 September 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: VID00109
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


AGRICULTURAL RESEARCH AND EDUCATION CENTER
LAKE ALFRED, FLORIDA


AREC-LA Mimeo
Series 71-39


CITRUS INSECT AND DISEASE SUMMARY
ENnT OF ATTCUN.T 1971

Statewide Index of Abundance


Mid Aug. End Aug. Trend


I


-2.0


Frt.


Rust
mite
-1.5


-1.0


-0.5


0

0o C. red mite
"K0__~-


Lvs.
Lvs.


Mid A g. nd Aug end


I '. 1


High for
mites

High for
scales;
whitefly


I . .


WFLY Ac

-v/

- -- --- C-=._ -> Black sc
----WFLY Li


Glover sc
Snow sc
x -


ults





.rvae


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 on leaves: 78% of groves infested (Norm 50%); 54% economic (Norm 33%).
on fruit: 86% of groves infested (Norm 60%); 70% economic (Norm 44%).
Populations decreased on both leaves and fruit but both are still above normal and
at high level. Little change is expected. All districts are in the high range: West
/7 n V-,r- 4 1 f\ PN 0 1 t /1 71\ hr ^"rh (1 ?,1 r! c1 3N\ -

Citrus Red Mite: 47% of groves infested (Norm 49%); 24% economic (Norm 19%).
Population is at the normal low level. Little change is expected. All districts
are low.

Texas Citrus Mite: 19% of groves infested (Norm 23%); 4% economic (Norm 9%).
Population continued to decrease. It is below normal and very low. Little change
is expected until the fall increase begins in early October.

Glover Scale: 64% of groves infested (Norm 44%); 7% economic (Norm 8%).
Population is above normal and in the moderate range. Slight decrease is expected.
Highest district is South (.86).


Pur2le Scale: 49%
Chaff Scale: 37%
Yellow Scale: 24%
The 3 armored
districts. Little


of groves infested (Norm 44%); 2% economic (Norm 2%).
of groves infested (Norm 34%); 1% economic (Norm 3%).
of groves infested (Norm 24%); none economic (Norm 7%).
scales mentioned above are at or below the normal low level in all
change is expected.


Black Scale: 53% of groves infested (Norm 57%); 32% economic (Norm 36%).
Hatching of a new brood of crawlers will cause population to remain in the moderate
range which is near normal for September. Decrease is expected in October. Highest
districts are East (1.54) and Central (1,5).

Snow Scale: 29% of groves infested; 21% economic. Population is near the level of the
past 3 months and is higher than in any prior August. Increase is expected.

Whitefly: 73% of groves infested; 18% economic. Population is slightly above normal
and moderate. Adults are increasing and starting to deposit eggs on the early fall
flush. Highest districts are West (1.38) and East (1.23).

Spray Notes: Rust mite will be a continuing problem that will require frequent checking
of fruit with a hand lens. Spotty infestations can appear suddenly and quickly blemish
fruit. Most other pests will be unimportant in September. An exception is snow scale
which is likely to increase. Examine the bark on inside limbs for "snow" which is the
3-ridged white wax exudate of the male scales. Look among the males for tiny orange
colored crawlers. If crawlers are present, it is advisable to include a scalicide in
the fall spray.

THE NEXT SUMMARY WILL BE ISSUED EARLY IN OCTOBER.


530 August 31, 1971 WAS


I. A. Simanton


L




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