Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00017
 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 April 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: VID00017
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

CITRUS INSECT AND DISEASE SUMMARY
MID-APRIL 1967


CES Mimeo Series 67-29


Statewide Index of Abundance
.... .. ..-


Mid
Apr


Trend


Rust mite

A------
Texas C. mite
-__>4


C. red mite


A

)


High for


mites


High for
scales


Ehd
Mar


Mid
Apr


Trend


Scales


.* .--> Glover
-------> Purple
-- --- Yellow
o- -O-- ---9 Yellow


NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.
Rust Mite: 69% of groves infested (Norm 58%); 59% economic (Norm 36%).
Population again reached a record high level for this time of year and will continue
to be high. New leaves are now almost as heavily infested as old leaves. Highest dis-
tricts are West (2.08) South (2.08) Central (1.83) and North (1.27).
Texas Citrus Mite: 67% of groves infested (Norm 37%); 42% economic (Norm 16%).
April population is already higher than in any prior April. A further increase into
the high range is expected. Highest districts are West (1.85) Central (1.53) and
North (1.33).
Citrus Red Mite: 66% of groves infested (Norm 45%); 33% economic (Norm 15%).
April population is increasing. A further expected increase will result in more
and heavier infestations than in April of the past 6 years. Highest districts are
North (1.47) West (1.38) and Central (.97).
Six-spotted Mite: 6% of groves infested; none economic. This mite is expected to remain
below normal and of little concern.

Glover Scale: 87% of groves infested; 21% economic. Population is expected to remain in
the high range at the current level. This level is near normal for April in recent years.
Highest district is East (1.32); South (1.27) and Central (1.23).
Purple Scale: 81% of groves infested; 11% economic. Slight increase will occur but
population will be near normal and few if any infestations will be heavy. Highest dis-
trict is Central (1.10).
Yellow Scale: 76% of groves infested; 4% economic. Population will decrease and infesta-
tions will be lighter than in the past three years. Very few groves will have damaging
numbers of scale. Highest district is Central (.93).
Chaff Scale: 60% of groves infested; 7% economic. Population will remain below average
and in the low range. Highest district is Central (.83).


Black Scale:
abundance and
generation of


24% of groves infested; 6% economic. This scale is currently below average
at very low level. Little change is expected until May when the spring
crawlers will appear. Highest district is East (.68).


Aphids: 54% of groves infested; 14% economic. The spring peak of abundance occurred
in the first half of April and was above normal.
Mealybugs are very scarce. Population is expected to be near normal and smaller than
last spring.
Whitefly adults will be present through April but population will not exceed the normal.

Spray Notes: Where melanose is a problem the postbloom spray should include 3.75 pounds
metallic copper in neutral form per 500 gals and be applied within 3 weeks after petal
fall.


700 April 17, 1967 WAS


End
Mar


--


W. A. Simanton




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