Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00123
 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 June 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: VID00123
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




HUME LIBRARY


JUN F 1972


CS-1972-15
I.F.A.S. Univ. of Florida 500-6/2/72-WAS-Lake Alfred, Fla.

AGRICULTURAL RESEARCH AND EDUCATION CENTER LAKE ALFRED, FLORIDA
CITRUS INSECT AND DISEASE SUMMARY
END OF MAY 1972


Statewide Index of Abundance


Mid May End May Trend
-2.0


Rust mie - .
Rust mite ivs.


0 Texas C. mite




C. red mite
C. red mite


-High for


Mid May End May Trend








,> Bla

,D "^ ~- iyc.


mites

High for


scales;
whitefly


ick schle


Glover scale


--"-- -----
a'


Snow sea
x--- -- --- > Mealybug
--


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: 72% of groves infested (Norm 50%); 48% economic (Norm 33%).
Population decreased temporarily but will again increase on both leaves and fruit. It
will continue above normal and in the high range. Highest districts are South (2.17) Central
(1.78) and West (1.78).
Texas Citrus Mite: 55% of groves infested (Norm 55%); 33% economic (Norm 34%).
Population increased and is now near normal. Further expected increase through June will
take population into the high range. Highest districts are Central (1.46) and West (1.07).
Citrus Red Mite: 27% of groves infested (Norm 57%); 10% economic (Norm 30%).
This mite is below normal and in the low range. Although population generally will remain
low, a few heavy infestations are expected in scattered areas. Highest district is West (.57).
Glover Scale: 81% of groves infested (Norm 85%); 3% economic (Norm 24%).
Purple Scale: 76% of groves infested (Norm 80%); 3% economic (Norm 10%).
Populations are below normal and moderate for both species. Very few infestations are
important. Little change is expected. Highest districts for Glover scale are West (1.00) and
South (.96). For purple scale the highest district is East (.86).


Black Scale: 52% of groves infested (Norm 40%); 32% economic (Norm 21%).
Population increased and is now above normal and in the high range. Further
predicted through June. Highest districts are East (2.24) and Central (1.45).


Chaff Scale: 49% of groves infested (Norm 62%); 1% economic (Norm 10%).
Yellow Scale: 43% of groves infested (Norm 62%); none economic (Norm 8%).
These two scales are below normal and at low level in all districts.
expected.


Little change is


Snow Scale: 32% of groves infested; 22% economic. Population will spread and intensify.


Whitefly: 77% of groves infested (Norm 66%); 31% economic (Norm 25%).
Population is above normal and in the high range. Temporary decrease
Highest districts are East (1.43) Central (1.41) and West (1.33).


is expected.


Mealybug: 41% of groves infested (Norm 39%); 6% economic (Norm 8%).
Population is near normal and presently low but with a strong increase expected.
Spray Notes: Materials recommended as thorough coverage sprays for the control of Glover,
snow, purple, chaff, and yellow scales in summer are: 2.5 pints of parathion 4 liquid (or
equivalent), 1.25 pints of parathion 4 liquid plus 0.5 percent oil, 5.0 quarts of malathion 5
liquid (or equivalent), 3.0 quarts of malathion 5 liquid plus 0.5 percent oil, 3.75 pints of
ethion 4 liquid plus 0.5 percent oil, and 5.0 pints of Guthion 2 liquid (or equivalent) per
500 gallon of spray. These also control whiteflies, black scale in early June, and will
control mealybugs if applied before they move under the stem buttons. In addition to the above
mentioned materials, ethion at 3.75 pints and Trithion at 3.75 pints are effective in con-
trolling citrus snow scale. If scales, mealybug or mites do not require a June spray it is
advisable to delay the summer spray until July, when oil (or copper) is effective in controlling
greasy spot on the summer flush.


-1.5




-1.0




-0.5


increase is


Hig fo


p ,


,


3~-11


June 2, 1972


W. A. Simanton




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