Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00121
 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 1972
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: VID00121
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
I)


5 HUME LIBRARY



M MAY4


I.F.A.S. Univ. of Florida cs-1972-11
500-5/3/72-WAS-Lake Alfred, Fla.

AGRICULTURAL RESEARCH AND EDUCATION CENTER LAKE ALFRED, FLORIDA
CITRUS INSECT AND DISEASE SUMMARY
END OF APRIL 1972
Statewide Index of Abundance
I I I I I I
Mid Apr. End Apr. Trend Mid Apr. End Apr. Trend
-2.0

Rust mite
leaves ->

1.5
__High for
mites
>WFly L
High forWFy L
1.0 scales; Glover scale
whitefly B---- Black scale
Texas C. mite o- Purple scale
-5 _- --> Snow sca e
0.5 o
o---
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.
Citrus Rust Mite: 75% of groves infested (Norm 65%); 56% economic (Norm 44%).
Population increased and is again above normal and in the high range. Further increase
is expected. Highest districts are South (2.31) Central (1.87) and West (1.75).
Citrus Red Mite: 32% of groves infested (Norm 47%); 7% economic (Norm 19%).
Population will remain below normal and in the low range until mid-May; then increase.
Highest district is South (.54).
Texas Citrus Mite: 39% of groves infested (Norm 44%); 19% economic (Norm 21%).
Although the recent increase will continue, population is expected to be below normal
and in the moderate range through May. Heavy infestations will develop in scattered groves
in most districts. Highest districts are South (1.04) and East (.86).
Six-spotted Mite: 4% of groves infested (Norm 8%); none economic (Norm 1%).
Population is below normal and will remain very low.
Glover Scale: 81% of groves infested (Norm 81%); 3% economic (Norm 20%).
Population is below normal and nearly all infestations are light. Gradual increase is
predicted. Highest district is West (1.00).
Purple Scale: 72% of groves infested (Norm 79%); 6% economic (Norm 10%).
This scale is below normal abundance and at moderate level. Little change is expected.
Highest district is North (.96).
Chaff Scale: 50% of groves infested (Norm 57%); 2% economic (Norm 8%).
Yellow Scale: 34% of groves infested (Norm 62%); none economic (Norm 7%).
These two armored scales will remain subnormal and at low level in all districts.
Black Scale: 44% of groves infested (Norm 22%); 25% economic (Norm 8%).
Population is above normal and will continue near the present level until the end of
May when it is expected to increase to the high range. Highest districts are East (1.78)
and Central (1.23).
Snow Scale: 32% of groves infested; 23% economic. Slight increase is expected.
Whitefly: All forms are more abundant than average for April. All districts have a similar
degree of infestation. Increase is predicted.
Aphids: Rapid increase to above normal numbers occurred until late April, two weeks later
than average. Decrease to low level is underway.
Mealybugs currently are at very low level but a strong increase is expected in May.
Spray Notes: The high populations of rust mites on foliage should be reduced to prevent the
new fruit from early and serious attack. Materials available for rust mite control are
Acaraben, Carzol, Delnav, Guthion, sulfur and Trithion. Where snow scale, black scale, mealy-
bug or whitefly also are problems, the choice would be Guthion. Parathion or malathion may
be used with the other miticides to provide scale control. Thorough coverage is necessary
for effectiveness against scales and mealybug.


W. A. Simanton


May 3, 1972




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