Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00113
 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 November 1971
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: VID00113
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


6 AREC-LA Mimeo Series 71-47
AGRICULTURAL RESEARCH AND EDUCATION CENTER
LAKE ALFRED, FLORIDA
CITRUS INSECT AND DISEASE SUMMARY
MID-NOVEMBER 1971

/ Statewide Index of Abundance
/ End ct Nov. Trend End Oct. Mid Nov. Trend

2 3 Frt

," Lvs.

Rust mite

_High for
rust mite

1.0 High for WFTY larvae
scales; B--~ '--> Black scale
whitefly; WFLY Adults
winter high ----> Glover scale
for CRM & TCM *-
-0.5 C. red mite -> Snow sc le
0-C. red mie

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: 82% of groves infested (Norm 69%); 62% economic (Norm 51%).
Population decreased but is still above normal and in the high range. Although further
decrease is expected, about 28% of groves will harbor heavy infestations. Highest districts
are West (2.58) South (2.00) Central (1.71) and North (1.71).
Citrus Red Mite: 26% of groves infested (Norm 32%); 3% economic (Norm 8%).
Population continued in the low range and below normal. Slight increase is expected.
Highest districts are West (.50) and South (.32).
Texas Citrus Mite: 25% of groves infested (Norm 27%); 3% economic (Norm 10%).
Population remained static. It is below normal and in the low range. Little change is
expected. Highest districts are West (.43) and Central (.39).
Glover Scale: 65% of groves infested (Norm 65%); 3% economic (Norm 12%).
Population increased but is still below normal and in the low range. Although further
increase is expected, infestations are not likely to be important until Spring. Highest
districts are West (.87) and North (.77).
Purple Scale: 61% of groves infested (Norm 61%); 2% economic (Norm 5%).
Chaff Scae:T 41% of groves infested (Norm 41%); 1% economic (Norm 6%).
Yellow S :ale: 28% of groves infested (Norm 55%); none economic (Norm 8%).
The 3 scales named above are all below normal abundance and at low population levels.
Little change is expected.
Black Scale: 61% of groves infested (Norm 32%); 32% economic (Norm 10%).
The November population this year is higher than in any prior November in 20 years of
record. However, most infestations are light to moderate and are not expected to be very
troublesome this year. Decrease is expected. Highest districts are Central (1.53) and
East (1.30).
Snow Scale: 30% of groves infested; 23% moderately or heavily infested. Population is higher
than in any prior month. Decrease is expected.
Whitefly: 87% of groves infested; 20% economic. Population is the highest for November in
20 years of record. It is expected to drop out of the high range in December. Highest dis-
tricts are East (1.55) and West (1.31).
Spray Notes: Snow scale infested trees are likely to harbor tiny orange colored crawlers even
in winter months. Crawlers can be transported on pickers' clothing and equipment. An overnite
interval is advisable when moving picking crews from infested to non-infested groves. A full
coverage scalicide spray to reduce snow scale population is advisable where snow scale in-
festations are heavy and active. Do not use the miticide Kelthane in snow scale infested groves
unless a scalicide is also included.


500 November 18, 1971 WAS


W. A. Simanton




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