Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00065
 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 July 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: VID00065
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 70-2
CES Mimeo Series 70-2
; CITRUS INSECT AND DISEASE SUMMARY
MID-JULY 1969

Statewide Index of Abundance
I I I I I I
End June Mid Jul. Trend End June Mid Jul. Trend
-2.0
2. Black sc

Rust mite

-1.5 x--
High for Mealybug
mites V----> Whitefly
Texas C. mite
1.0 ai. High for _
So'-- scales; --- Glover c.
whitefly, ) Yellow c.
C. red mite mealybug Yellow0---

-0.5





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

Rust Mite: 76% of groves infested (Norm 58%); 63% economic (Norm 34%).
Population reached the highest level for mid-July in 18 years of record. It is likely
to attain a record high peak by August 1, then decrease. Infestations are similar on leaves
and on fruit. All districts are very high except East which is unusually low for July:
Highest are West (2.60), North (2.52), South (1.94), Central (1.83), and lowest is East (.89).
Texas Citrus Mite: 50% of groves infested (Norm 76%); 34% economic (Norm 53%).
Population peaked at the lowest level for mid-July since 1959. Decrease is expected
but scattered groves will have important infestations through August. Highest districts
are Central (1.40),North (1.17) and East (1.00).
Citrus Red Mite: 57% of groves infested (Norm 70%); 30% economic (Norm 41%).
This mite has attained the summer peak of abundance but is at the lowest mid-July
level in 18 years of record. Highest district is West (1.27).
Glover Scale: 80% of groves infested (Norm 80%); 14% economic (Norm 29%).
Population dropped to moderate level. It will remain below normal and decrease further.
Highest district is North (1.08).
Purple Scale: 60% of groves infested (Norm 75%); 1% economic (Norm 12%).
This scale will remain subnormal and at low level. Highest district is North (.83).
Chaff Scale: 45% of groves infested (Norm 66%); 1% economic (Norm 13%).
This scale will remain below normal and low in all districts.
Yellow Scale: 71% of groves infested (Norm 66%); 3% economic (Norm 11%).
Population is near the normal moderate level. Slight increase is expected. Highest
district is North (1.00).
Black Scale: 88% of groves infested (Norm 85%); 70% economic (Norm 65%).
Population reached the summer peak in early July slightly above the normal high level.
Gradual decrease is expected to drop population into the moderate range in late August. All
districts are high at present: East (2.71), South (2.47), Central (1.81),West (1.64) and
North (1.54).
Snow Scale: 18% of groves infested; 7% with moderate to heavy infestations. Increase is
expected through August.
Whitefly: 84% of groves infested; 36% economic. Population is currently higher than at
any month in the prior 18 years of record. It is expected to remain high through July;
then decrease to moderate level in August.
Mealybug: 85% of groves infested; 43% economic. Population is at the summer peak, and
above the normal high level. Decrease is expected.
Spray Notes: Sprays to control greasy spot disease should hp plied 4 to 6 weeks after
the summer flush. Oil is effective, bit "i" is i ed in the summer spray,
1.5 pounds of metallic copper per 500 ;alRL-JlId- co trol. Increase the copper
to 2.5 pounds in groves that did not r ceive copper in the post bloom spray.

625 July 18, 1969 WAS JUL 23 1969 W. A. Simanton


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