Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00057
 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 March 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: VID00057
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

/s CITRUS EXPERIMENT STATION CES Mimeo Series 69-25
C S 9 LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
MID-MARCH 1969

Statewide Index of Abundance
End Mid End Mid
Trend Enid Trend
2.0 Feb. Mar. Fk ar.

Rust mite fruit


-1.5 -x--- 41AR 31 1969

Rust mite Ivs. High for A. cables
rust mite IuVl O /of c0e

-1.0 High for _
scales; winte
high for > Yellow
CRM. & TCM > YPurple
Texas C. mite Glover

-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: 72% of groves infested (Norm 61%); 52% economic (Norm 40%).
Population is above normal and in the high range. At present, populations on leaves
and fruit are similar; however, infestation of mature fruit is expected to increase while
infestation of mature leaves is expected to decrease. Spring leaves are likely to harbor
important infestations after mid-April. Highest districts are South (2.20) West (2.00)
and North (1.72).
Texas Citrus Mite: 33% of groves infested (Norm 31%); 15% economic (Norm 14%).
Population is near normal and in the low range. Increase has started and is expected
to continue. Moderate to heavy infestations are predicted for 20 to 25% of groves. High-
est districts are Central (.66) and North (.63).
Citrus Red Mite: 34% of groves infested (Norm 39%); 10% economic (Norm 12%).
Population is slightly below average for this date and is in the low range. Gradual
increase is expected and about 15% of groves are likely to develop moderate to heavy in-
festations. Highest districts are East (.75) West (.56) and South (.44).
Six-spotted mite is present in 7% of groves as light infestations only. Slight increase
is expected.
Glover Scale: 69% of groves infested (Norm 80%); 5% economic (Norm 16%).
Purple Scale: 67% of groves infested (Norm 78%); 5% economic (Norm 9%).
Yellow Scale: 78% of groves infested (Norm 62%); 3% economic (Norm 12%).
Black Scale: 21% of groves infested (Norm 30%); 6% economic (Norm 13%).
Chaff Scale: 34% of groves infested (Norm 61%); 1% economic (Norm 9%).
Snow Scale: 18% of groves infested; 8% moderate to heavy.
All of the above scales are at low or moderate level in all districts. Activity is
below average for this date and little change in the level of infestation is expected be-
fore mid-April. Populations of all scales except snow scale are below the normal March
levels.
Whiteflies increased but are still at low to moderate level and of little concern.
Mealybug population is below normal and very low.
Aphids are present in 10% of groves, which is near av ag for this date. A strong
increase is expected to occur through mid-April. / y
Spray Notes: Although aphids and spider mites may become ou on the spring foliage,
the grower should consider whether control is eco mical. In g control is justi-
fied where the foliage consists mostly of young eaves, as trees and on cold
damaged trees, where vigorous foliage should b antained '~tpromo teowth. Aphid
control is always important on susceptible varn e uch as Tege.


625 March 20. 1969 WAS




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