Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00070
 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 October 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: VID00070
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 1 n CITRUS EXPERIMENT STATION C M S 7-
7 ID LAKE ALFRED, FLORIDA CES Mmeo eres 70-10

CITRUS INSECT AND DISEASE SUMMARY
MID-OCTOBER 1969

Statewide Index of Abundance
End Sept. Mid Oct. Trend End Sept. Mid Oct. Trend
-2.0


---------------------->

1.5 Rust mite -
High for Whitefly
_______________________ High for Wtf
mites

1.0 High for _
scales, Black scale
whitefly --


0.5 C. red mite /
.-> Glover scale
O ---- -0

Texas C. 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: 79% of groves infested (Norm 67%); 58% economic (Norm 41%).
Population decreased but is still above normal and in the high range. Although decrease
is expected in number of groves infested, some groves now harboring mites will show further
buildup. Infestations will be similar on leaves and on fruit. Highest districts are West
(2.20) South (2.11) and North (2.00).
Texas Citrus Mite: 18% of groves infested (Norm 18%); 5% economic (Norm 4%).
Population is normal and low with gradual increase expected. Highest district is
Central (.39).
Citrus Red Mite: 28% of groves infested (Norm 23%); 7% economic (Norm 5%).
This spider mite is slightly more abundant than normal for October. Population in-
crease is expected and scattered groves may develop important infestations. Highest
districts are West (1.00) and South (.50).
Glover Scale: 58% of groves infested (Norm 56%); 5% economic (Norm 7%).
Population is near normal and at low to moderate level. Gradual increase is expected.
Highest district is North (.83).
Purple Scale: 53% of groves infested (Norm 53%); 6% economic (Norm 2%).
This scale increased but is expected to remain near normal and in the low range.
Highest district is North (.90).
Chaff Scale: 31% of groves infested (Norm 37%); 3% economic (Norm 2%).
Population will remain near normal and at low level in all districts.
Yellow Scale: 48% of groves infested (Norm 52%); 5% economic (Norm 6%).
Population is near normal and moderate with a slight upward trend. Scattered heavy
infestations may be expected on young trees. Highest district is North (.93).
Black Scale: 51% of groves infested (Norm 35%); 23% economic (Norm 13%).
Although decrease has occurred in all districts, population is still above normal and
a few groves have heavy infestations. Further decrease is predicted. Highest districts
are Central (1.48) and West (.79).
Snow Scale: 20% of groves infested; 8% with moderate to heavy infestations. Activity and
population will continue at the present levels.
Whitefly: 78% of groves infested; 27% with moderate to heavy infestations. Larval and
adult forms are at the highest October levels in 18 years of record. Population of the
larval form will increase and will continue in the high range. The high population may
result in abundant sooty mold but otherwise is not likely to damage citrus if rainfall
remains adequate. Highest districts are North (1.45) West (1.00) and Central (.91).
Spray Notes: With harvest time at hand, and the possible need for a fall spray applica-
tion, growers should review the regulations as to required waiting periods between spray
treatment and fruit harvest. These are given in the 1969 Florida Citrus Spray and Dust
Schedule available from county agricultural agents and from the Florida Department of
Citrus, Lakeland.


600 WAS October 21, 1969


W. A. Simanton




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