Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00038
 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 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: VID00038
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
.j- b^ CITRUS EXPERIMENT STATION ,
LAKE ALFRED, FLORIDA CES Mimeo Series 68-26

CITRUS INSECT AND DISEASE SUMMARY
MID-APRIL 1968

Statewide Index of Abundance
Erd Mid 'End Mid 'Tr
Trend Trend
Mar. Apr. Mar. Apr.
-2.0


Rust mite

-1.5
i-High for
mites Scales

-i.0 High for
scales > Glover

Texas C. mite ?urple
0. -- Yellow
0.5

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: 70% of groves infested (Norm 58%); 47% economic (Norm 36%). Population is
similar to that of late March. It is above average and in the high range. Slight decrease
is expected. Highest districts are South (1.74) Central (1.67) and West (1.57).
Texas Citrus Mite: 37% of groves infested (Norm 37%); 12% economic (Norm 16%). This mite
is now at the normal low level for April. Further increase is expected and a few heavy
infestations will develop. Highest districts are East (.82) and South (.71).
Citrus Red Mire: 43% of groves infested (Norm 45%); 12% economic (Norm 15%). Population
is currently in the low range and slightly below normal. Although the statewide popula-
tion is expected to decrease slightly, some local infestations will increase. Highest
district is East (1.00).
Six-spotted Mite: 4% of groves infested. This mite is expected to continue below normal
abundance and at very low level.
Glover Scale: 80% of groves infested (Norm 80%); 8% economic (Norm 25%). Population is
below normal and moderate. Little change is expected. Highest districts are East (1.04)
Central (.97) and South (.96).
Purple Scale: 65% of groves infested (Norm 84%); 1% economic (Norm 14%). Population is
below normal and low. Slight increase is expected. Highest district is West (.80).
Chaff Scale: 68% of groves infested (Norm 71%); 3% economic (Norm 14%). This scale is
below average and at low level in all districts. Further decrease is expected.
Yellow Scale: 66% of groves infested (Norm 65%); 2% economic (Norm 13%). Population is
below normal and low. Little change is expected. Highest district is East (.78).
Black Scale: 34% of groves infested (Norm 32%); 14% economic (Norm 10%). Population is
slightly above average for April but is in the low range. Increase is expected early in
May. Highest districts are East (.87) and Central (.77).
Snow Scale: 157 of groves infested; increase is expected.
Aids: 16% of groves infested, which is about half of the normal percentage for April.
Most infestations are expected to be light and of short duration.
Whirefly population is near normal and at moderate level. Increase is expected in May..
Mealybug currently is at very low level. A strong increase is expected at mid-May.
Sray Notes: Rust mite, melanose and scale are pests for which a postbloom spray is needed.
If melanos. control is important use 3.75 pounds of metallic copper in neutral form per
500 gals and apply within 3 weeks of petal fall. .If melanose is not important, time the
spray to control rust mite before it infests more than 10% of young fruit. Use chloro-
benzilate, sulfur, Nabac (dilute only) or if scale control also is needed use Guthion LC
for rust mite and scale. A scalicide should be used if snow scale is present and/or where
other scales, mealybug or whitefly have been a chronic problem.


600 April 19, 1968 ..-.S


W. A. Simanston




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