Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00110
 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 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: VID00110
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


AREC-LA Mimeo
- 7/-/7 AGRICULTURAL RESEARCH AND EDUCATION CENTER Series 71-42
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF SEPTEMBER 1971

Statewide Index of Abundance
End Aug. Mid Sept. End Sept Trend End Aug. Mid Sept. End Sept. Trend


.0- "--v- rt. HUME LIBRARY

Rust mite --
.-...-' ", 2 197i
Lvs.
.5-

High for J--.AS. Univ. of Florida
mites VI _-

.0 High for ----->WFLY Larvae
scales; --Blac c
whitefly N~WFLY Adults
"- Glover sc
z--- .- ~ ~~-- Snow s
.5
O C. red mite
D- 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.

Citrus Rust Mite: 80% of groves infested (Norm 57%); 63% economic (Norm 35%).
This mite is again increasing after a brief decline in August and early September.
Population is the highest for this period in 20 years of record. Further increase is
expected to keep population in the high range into November. Highest districts are
West (2.67) South (2.12) Central (1.82) and North (1.73). East district is low (.69).
Citrus Red Mite: 18% of groves infested (Norm 23%); 4% economic (Norm 5%).
Population is near the normal low level. Gradual increase is expected, and a few
groves may develop important infestations. Highest district is West (.38).
Texas Citrus Mite: 17% of groves infested (Norm 16%); 2% economic (Norm 3%).
This mite is at the low level of abundance normal 'for September. The fall increase
has started and will continue into December. Highest district is South (.30).
Glover Scale: 48% of groves infested (Norm 50%); 5% economic (Norm 8%).
Population is slightly below normal and in the low range. Gradual increase is
expected. Highest district is West (1.00).
Purple Scale: 45% of groves infested (Norm 46%); 1% economic (Norm 2%).
Chaff Scale: 28% of groves infested (Norm 30%); 2% economic (Norm 2%).
Yellow Scale: 19% of groves infested (Norm 46%); none economic (Norm 6%).
The 3 armored scales listed above are all near or below their normal low levels for
this time of year in all districts. Little change is expected.
Black Scale: 59% of groves infested (Norm 37%); 34% economic (Norm 15%).
Although population is at a record high level for this month of the year, it will
soon drop out of the high range and gradually decrease to normal. Highest districts are
Central (1.52) South (1.15) and East (1.10).
Snow Scale: 27% of groves infested; 21% economic.
Population is higher than in September of any prior year. Increase is predicted
for October.
Whitefly: 88% of groves infested; 20% economic.
Population of the larval stage is above normal and in the high range. Decrease is
expected. Highest districts are West (1.31) Central (1.22) and East (1.14).
Spray Notes: With rust mite a continuous threat and with spider mites increasing, the
fall mite spray will be important. Where spider mites are present either alone or with
rust mite, use 5.0 pints of Kelthane MF or 2.5 pints of either Ethion 4 liquid, Trithion 4
liquid or Delnav 4 liquid per 500 gallon; however, do not use Kelthane in snow scale
infested groves. A full coverage dilute spray of either Ethion or Trithion at 3.75 pints
per 500 gallon would be a good choice to control mites and snow scale.


530 October 6, 1971 WAS


W. A. Simanton




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