Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00061
 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 1969
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: VID00061
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

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CITRUS EXPERIMENT STATION
LAKE ALFRED, FLORIDA


CES Mimeo Series 69-31


CITRUS INSECT AND DISEASE SUMMARY
MID-MAY 1969


NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.
Rust Mite: 79% of groves infested (Norm 55%); 57% economic (Norm 35%).
This pest increased greatly and further increase is expected. Population on leaves
is in the high range and is the highest in 18 years of record for mid-May. Infestation
of fruit is also much above normal and will soon be at high level. Highest districts are
North (2.41) West (2.00) South (1.76) and Central (1.38).
Texas Citrus Mite: 36% of groves infested (Norm 53%); 16% economic (Norm 29%).
Population is still below normal and in the low range statewide. Heavy infestations
are present in 8% of groves in scattered locations. Increase is expected through June.
Highest districts are Central (.83) North (.66) and West (.54).
Citrus Red Mite: 41% of groves infested (Norm 52%); 13% economic (Norm 26%).
This spider mite also is below normal abundance and at low level statewide. Slight
increase expected and heavy infestations are likely to develop in about 5% of groves.
Highest districts are West (,91) and North (.72).
Six-spotted Mite: 16% of groves infested; 7% economic.
Population increased and is near the average May level of the past 7 years. Scat-
tered heavy infestations may be expected into June in groves not treated with miticide.


Glover Scale: 81%
Population is
expected. Highest


of groves infested (Norm 82%); 12% economic (Norm 27%).
slightly below average and in the moderate range. Slight increase is
districts are South (1.12) East (.95) and North (.93).


Purple Scale: 82% of groves infested (Norm 81%); 6% economic (Norm 11%).
Population is below normal and at moderate level. Although increase is expected,
very few infestations will be severe.
Yellow Scale: 76% of groves infested (Norm 65%); 7% economic (Norm 9%).
This scale is slightly more abundant than normal but only a few infestations are heavy.
Little change is expected from the current moderate level. Highest districts are North
(1.03) and South (.88).
Chaff Scale: 50% of groves infested (Norm 68%); 2% economic (Norm 13%). Population is
expected to continue low and subnormal despite slight increase.
Black Scale: 21% of groves infested (Norm 32%); 3% economic (Norm 13%).
The summer increase of this scale has started and will continue into July. Current
population is below normal and in the low range. Highest districts are East (.63) and
Central (.40).
Snow Scale: 20% of groves infested, 7% with moderate or heavy infestation. This scale
will continue to spread.
Mealybug: 167 of groves infested; 2% economic. Population is still low but expected
rapid increase will cause heavy infestation in scattered groves.
Whiteflies: 71% of groves infested; 10% economic. Population of the larval form is near
normal. It is expected to increase and enter the high range.


625- May 19, 1969 WAS


W. A. Simanton




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