Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00049
 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 October 1968
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: VID00049
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

" 6- (-- ]CITRUS EXPERIMENT STATION *-*
LAKE ALFRED, FLORIDA CES Mimeo Series 69-12

CITRUS INSECT AND DISEASE SUMMARY
MID-OCTOBER 1968

Statewide Index of Abundance
I I I I I |
End Mid End Mid
Trend Trend
Sept. Oct. Sept. Oct.
-2.0
Rust mite on fruit ,,


-1.5 ,
-" ivs -.1 --

Ivs- High fcr
iT mites

-1.0 High for
scales

-----> Whitefly

-0.5 _
Texas C. mite- -- .--- Glover sc
---- Black sc

C. red mite

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

Rust Mite: 64% of groves infested (Norm 65%); 39% economic (Norm 37%).
Population increased and is again at high level. Further increase is expected to
take population well into the high range and above normal for October. Infestations will
be higher on fruit than on leaves. Highest districts are West (1.69) South (1.68) and
North (1.18).

Texas Citrus Mite: 15% of groves infested (Norm 19%); 3% economic (Norm 3%).
Population increased from the very low level of September but is still low and below
normal. Gradual increase is expected. Highest district is North (.35).

Citrus Red Mite: 17% of groves infested (Norm 24%); 3% economic (Norm 5%).
Gradual increase from the record low September level is underway and will continue.
Population is expected to remain low and below normal. Highest district is West (.31).

Black Scale: 30% of groves infested (Norm 35%); 6% economic (Norm 12%).
Population will remain low and below normal. Highest district is East (.62).

Glover Scale: 35% of groves infested (Norm 61%); 1% economic (Norm 9%).
Purple Scale: 18% of groves infested (Norm 58%); 1% economic (Norm 3%).
Chaff Scale: 16% of groves infested (Norm 43%); less than 1% economic (Norm 3%).
Populations of the 3 scales named above will continue below normal and in the low
range despite gradual increase.

Yellow Scale: 32% of groves infested (Norm 57%); less than 1% economic (Norm 7%).
Population is in the low range and below the average level of the past 4 years.
Little change is expected.
Snow Scale: 14% of groves infested; 1% economic.
Activity is at a low level and little change is expected.

Whiteflies are present in larval form in 60% of groves. 10% have economic infestations.
Population will remain near the normal moderate level for October.

Spray Notes: Heavy infestations of rust mites may be expected in many groves in all parts
of the citrus belt during the next two months. Rust mite control should be started be-
fore 15% of leaves or fruit are infested. Chlorobenzilate 4E at 1.25 pints per 500 gals
can be used for rust mite alone; sulfur may be preferred for dense trees that are hard to
penetrate; Guthion LC2 at 5 pints per 500 gals is a good choice if snow scale, other
scale or whitefly also require control. The latter 2 materials may promote spider mite
buildup. Kelthane, ethion, trithion and Dplnav are recommended for rust mite and
spider mite control. HU E LIBRARY

625 October 18, 1968 WAS 22 W. A. Simanton
OCT 22 1968


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