Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00090
 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 1970
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: VID00090
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
) ,5-- LAKE ALFRED, FLORIDA ---
CES Mimeo Series 71-9
CITRUS INSECT AND DISEASE SUMMARY
END OF SEPTEMBER 1970

Statewide Index of Abundance
I t I I I I I I
End Mid End Trend End Mid End Trend
AVg. Sept. Sept. Aug. Sept. Sept.
Rust mite fruit

- - :

.5-' -- Whitefly A
Rust mite leaves .High
High for
mites _

High for V WF L
scales;
whitefly
Glover scale
C. red mite *- ----
.5- o X --->
a -0->
Snow scale

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.
Citrus Rust Mite: 76% of groves infested (Norm 57%); 58% economic (Norm 35%).
Population is above normal, is in the high range and is expected to increase.
Infestation will be of similar magnitude on leaves and fruit. Highest districts are
West (2.33) South (2.11) Central (1.85) and North (1.41). East district is low (.84).
Citrus Red Mite: 27% of groves infested (Norm 23%); 7% economic (Norm 5%).
Population is slightly above normal but is in the low range. Little change is
expected. Highest district is Central (.62).
Texas Citrus Mite: 14% of groves infested (Norm 16%); 2% economic (Norm 3%).
Population is near average and very low in all districts. Slight increase is
expected.
Glover Scale: 56% of groves infested (Norm 50%); 5% economic (Norm 8%).
Purple Scale: 44% of groves infested (Norm 46%); 4% economic (Norm 2%).
Chaff Scale: 32% of groves infested (Norm 30%); 3% economic (Norm 4%).
Populations of these 3 species are near average, and low. Gradual increase is
expected. Highest district for Glover scale is South (.73), for purple scale it is
North (.57), and for chaff scale North (.50).
Black Scale: 49% of groves infested (Norm 37%); 24% economic (Norm 15%).
This scale will continue to be above average and near the current moderate level
of abundance. It is at high level only in Central district (1.38) and is not expected
to be of wide importance this year.
Yellow Scale: 34% of groves infested (Norm 46%); 2% economic (Norm 6%).
Population is below average. It will decrease and remain low in all districts.
Snow Scale: 29% of groves infested; 15% with moderate or heavy infestations. This
scale continued to increase. Population is higher than in any prior month. Further
increase is expected.
Whitefly: 84% of groves infested (Norm 64%); 29% economic (Norm 13%).
Population is in the high range and is highest for September in 19 years of record.
Additional increase is predicted for October. Highest districts are West (1.44) North
(1.32) Central (1.26) and South (1.04). The cloudy-winged species Dialeurodes
citrifolii predominates.
Mealybug population is now in the low range and will be lower. However, it is above
average for this time of year and is the highest for September in 19 years of record.
Highest district is South (.69).
Spray Notes: The outlook is for heavy infestation of rust mite to occur in about 30% of
groves in October. Rust mite can russet fruit just as readily in the fall as at other
times and in addition can cause leaf drop. Chlorobenzilate at 1.25 pints per 500 gal-
lons, or wettable sulfur at 25 to poud p 500 gallui, or sulfur dust may be used
if only rust mites are present. HUME LIBRARY


600 October 2, 1970 WAS OCT 20 1970 W. A. Simanton



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