Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00015
 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 March 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: VID00015
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 CES Mimeo Series 67-26

CITRUS INSECT AND DISEASE SUMMARY
MID-MARCH 1967

Statewide Index of Abundance
End Mid Trend End Mid Trend
Feb. Mar. Feb. Mar.
-2.0

Rust mite

A--
1.5
High for Scales
rust mite
Texas C. mite -H
1.- High for ---- ----- --- C Glover
-.0- ---- > scales; -- --> Purple
C. red mite winter high o o > Yellow
for
CRM & TCM
-0.5





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

Rust Mite: 73% of groves infested (Norm 56%); 58% economic (Norm 34%).
Population increased and is now at the highest March level in 16 years of record on
both leaves and fruit. It will continue in the high range and may increase further. Four
of the 5 districts are in the high range: South (2.16) West (2.07) Central (1.61) North
(1.33) and East (1.00).
Texas Citrus Mite: 52% of groves infested (Norm 27%); 34% economic (Norm 10%).
This mite is also at the highest March level on record and will increase into the
high range. Highest districts are West (1.43) North (1.13) Central (1.06) and South (.84).
Citrus Red Mite: 37% of groves infested (Norm 37%); 25% economic (Norm 14%).
Population is above the average of recent years. Increase is expected in scattered
areas and about 10% of groves will have heavy infestations. Highest districts are West
(1.36) North (1.10) and Central (.77).
Six-spotted mite is abnormally scarce and of little threat.
Glover Scale: 34% of groves infested; 20% economic. Population is above average and in
the high range. Little change is expected. Highest districts are East (1.26) South (1.22)
and Central (1.16).
Purple Scale: 30% of groves infested; 10% economic. Population is near normal and mod-
erate, with slight decrease expected.
Yellow Scale: 72% of groves infested; 3% economic. Population is near normal. It is in
che moderate range and lower than last March. No change is expected. Highest districts
are Central (1.00) and East (,91).
Chaff Scale: 59% of groves infested; 5% economic. Population is below normal and will
remain low or moderate in all districts.
Black Scale: 35% of groves infested; 12% economic. Population is above normal but will
remain in Lhe low range in most districts.
Whiitflies are slightly above normal numbers. Adult forms will become abundant.
Mealyougs are expected to remain at normal low level until early May.
Aphids will increase rapidly during the coming month and peak early in April. Overall
abundance is not expected to exceed the normal.

Spray Notes: Rust mite must be kept under control to avoid early fruit damage. This
will ;.e difficult where infestations are now on new growth. A thorough spray of chloro-
benzilate 4 liquid at 1.25 pt. per 500 gal is recommended. Sulfur at 25 lbs can be used
buc may increase scale and spider mices later. Guthion at 5 pints will control rust mites
and scale. Trithion 4 or ethion 4 at 3.75 pt will give spider mite control but control
may not c~ economical except in groves weakened by ocher causes.

SEE ENCLOSED NOTE A30UT CITRUS RESEARCH DAY!


550 March 17, 1967 WAS


W. A. Simanton




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