Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00022
 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 June 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: VID00022
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


CES Mimeo Series 68-1


CITRUS INSECT AND DISEASE SUMMARY
END OF JUNE 1967


Statewide Index of Abundance


Mid End Trend
June jane
-2.0 0 >
Texas C. mite --7


Rust mite


-1.5




-1.0


on leaves


on fruit
____ H h for


9-


. red mite


-0.5


mites


HaFh for


scales;
mealybug


Mid
june


End
June


Black scale-s-,
/// "


Trend

---


/'Glover scale
-- ----

Mealybug


NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.

Rust Mite: 58% of groves infested (Norm 47%); 36% economic (Norm 26%).
Population is above average on both leaves and fruit. Increase into the high range is
expected by mid-july with the summer peak occurring near the end of the month. The greatest
increase will be on fruit. Highest districts are West (1.92) southh (1.56) and Central (1.07)
Texas Citrus Mite: 86% of groves infested (Norm 75%); 69% economic (Norm 54%).
Population has reached the summer peak near the record high level reported for June
1965. Decrease is expected after mid-July but population will remain in the high range
until August. All districts are high: South (2.48) Central (2.17) West (2.00) North (1.74)
and East (1.65).
Citrus Red Mite: 62% of groves infested (Norm 71%); 36% economic (Norm 47%).
Statewide population is expected to hold near the current moderate level through July,
then decline. Highest districts are West (1.43) North (1.30) and East (1.17).


Glover Scale: 87% of groves infested; 34% economic.
high range. It is expected to decrease late in July.
South (1.64) and Central (1.36).


Population is near average and in the
Highest districts are East (1.65)


Purple Scale: 75% of groves infested; 9% economic. Population is below average and in the
moderate range with decrease expected. Highest district is East (.96).
Black Scale: 85% of groves infested; 59% economic. The peak population for the year will
occur at mid-July and will be near average level. This scale is expected to remain in the
high range until mid-August. Highest districts are East (2.52) and South (1.82).


Chaff Scale: 76% of groves infested; 14% economic.
moderate range. Decrease is expected in late July.


Population is below normal and in the
Highest district is East (1.13).


Yellow Scale: 76% of groves infested; 5% economic. This scale will remain in the moderate
range. Highest district is Central (.87).
Mealybug: 78% of groves infested; 30% economic. Population has entered the high range
and is nearing the summer peak at normal level. It will remain high through July. Highest
districts are East (2.17) Central (1.14) and South (1.08).
Whitefly: 72% of groves infested; 20% economic. Population is holding at the moderate
level normal for June. A gradual decrease is expected. Highest districts are East (1.35)
and Central (1.12). Winged forms will be numerous in July.
Melanose: Infection of fruit to date is lower than in any prior year.

Spray Notes: The summer spray application should be timed for rust mite control where
rust mite is a problem. In groves with a history of greasy spot, spray soon after the
summer flush has expanded. If oil is not used in the summer spray, neutral copper should
be included for greasy spot control (except with'zineb). Use 1.5 pounds of metallic
copper per 500 gallon in groves that received a postbloom copper and 2.5 pounds in groves
that did not receive copper earlier.


700 July 6, 1967 WAS


Hiah f or


W. A. Simanton




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