Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00016
 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 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: VID00016
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 CITRUS EXPERIMENT STATION
LAKE ALFRED, FLORIDA *-*
CES Mimeo Series 67-27
CITRUS INSECT AND DISEASE SUMMARY
END OF MARCH 1967

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

Rust mite on fruit


-1.5
Rust mite on lvs77 High for Scales

Texas C. mite mites
S_ -> Glover
-1.0 a 0 > High for *- -
0--- ------ > scales --Purple
SO Yellow
C. red mite

0.5





NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.
Son Leaves:- 68% of groves infested (Norm 56%); 59% economic (Norm 35%).
Rust Mite -
on Fruit: 82% of groves infested (Norm 44%); 57% economic (Norm 26%).
Population on leaves decreased slightly from the record high level at mid-March.
However, the population on fruit increased to a new 16 year record high for March. Al-
though a downward trend is expected in April, the statewide population will continue to
be in the high range. Highest districts are South (2.12) West (2.00) Central (1.72)
North (1.19) and East (.90). North district has more mites on fruit than on leaves.
Texas Citrus Mite: 56% of groves infested (Norm 32%); 36% economic (Norm 12%).
Population increased, establishing a new record high level for March. Little change
is expected in the statewide population. Infestations will vary greatly among districts
and groves. Highest districts are West (1.53) Central (1.19) and North (1.19).
Citrus Red Mite: 59% of groves infested (Norm 41%); 27% economic (Norm 16%).
This spider mite is more abundant than usual for March but is still at moderate
level. Slight increase is expected. Infestations will be localized. Highest districts
are West (1.40) North (1.39) and Central (.78).
Six-spotted Mite is present in only 4% of survey groves and all infestations are light.
This below-normal condition will continue.
Glover Scale: 84% of groves infested; 20% economic. Population is near the normal of
recent years. It will continue in the high range with slight increase expected. Highest
districts are East (1.30) South (1.27) and Central (1.12).
Purple Scale: 78% of groves infested; 9% economic. Population is below normal and in
the moderate range with slight increase expected. Highest district is Central (.97).
Yellow Scale: 77% of groves infested; 6% economic. Population is near normal, and in
the moderate range. Little change is expected. Highest district is Central (1.06).
Chaff Scale: 61% of groves infested; 6% economic. Population is below normal and in the
low range. Slight increase is expected. Highest district is Central (.91).
Black Scale: 24% of groves infested; 9% economic. Population is below normal and very
low. It will start to increase in April. All districts are low.
Whitefly: 65% of groves infested; 15% economic. Population is near normal. Adults will
be very numerous in April.
ADhids are reaching peak population about a week earlier than normal and will decrease
in April.
SPRAY NOTES: Grapefruit grown for the fresh fruit market should be kept free of black
scale. Guthion is the only material that will control black scale in the postbloom period.
Groves infested with snow scale should receive a postbloom scalicide. Use 2.5 pt.
parathion 4 liquid or equivalent per 500 gal; or 5 pt. Guthion. Malathion at 5 qt. of
5 liquid formulation and Diazinon at 5 pt. of the 4 liquid formulation also are effective.
The latter two materials require fewer safety precautions but are more expensive. Thor-
ough coverage of all wood is necessary.


4-3-67 WAS


W. A. Simanton




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