Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00101
 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 May 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: VID00101
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


AGRICULTURAL RESEARCH AND EDUCATION CENTER AREC-LA Mimeo
LAKE ALFRED, FLORIDA Series 71-27

CITRUS INSECT AND DISEASE SUMMARY
END OF APRIL 1971

Statewide Index of Abundance
Mid Apr. End'Apr. Trend Mid d

2.0I HUME LIBRARY


Rust mite leaves i 1 3

1.5ofon
______- 1.5 __- High for I.F.A.S.- Univ. of Florida
mites
f.. _- ---> Glover sc
1.0 --
Citrus red mite H scales;
/- WFLY Adt ts
--.. whitefly
O -c -_-----> WFLY Larvae

-0.5 Texas C. mite X------ -- -- Snow sc
1< ------ -> Aphids



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: 69% of groves infested (Norm 63%); 51% economic (Norm 40%).
Population decreased in 37% of groves and increased in 30%. Nonetheless, statewide
counts of number of leaves infested showed an increase and population remained above
normal and in the high range. Highest districts are South (2.14) West (1.67) and
North (1.64). Little change is expected.
Citrus Red Mite: 47% of groves infested (Norm 49%); 24% economic (Norm 19%).
Population is near normal and in the moderate range. Increase is expected and will
result in heavy infestation in scattered groves. Highest districts are South (1.23) and
Central (.76).
Texas Citrus Mite: 43% of groves infested (Norm 49%); 19% economic (Norm 24%).
Population is in the low range and slightly below normal. However, increase is
likely to be rapid and cause heavy infestations in local areas. Highest districts are
South (1.00) Central (.90) and East (.82).
Six-spotted Mite: 9% of groves infested; 2% economic.
Statewide population is near normal and low. A few heavy infestations will persist
through May, then diminish.
Glover Scale: 86% of groves infested (Norm 82%); 15% economic (Norm 25%).
Population is slightly below normal but has entered the high range and will increase.
Highest districts are South (1.23) North (1.04) and West (1.00).
Purple Scale: 78% of groves infested (Norm 82%); 7% economic (Norm 11%).
Population will remain below normal and moderate. Highest district is North (.96).
Chaff Scale: 49% of groves infested (Norm 64%); 2% economic (Norm 11%).
This scale will remain below normal and in the low range despite slight increase.
Highest district is North (.70).
Yellow Scale: 36% of groves infested (Norm 64%); none economic (Norm 9%).
April population is the lowest since 1964 and will remain at very low level. Highest
district is South (.54).
Black Scale: 11% of groves infested (Norm 26%); 3% economic (Norm 10%).
April population is below normal and very low. Slight increase is expected late in
May. Highest district is West (.44).
Snow Scale: 29% of groves infested; 20% economic. Population will increase.
Whitefly: 93% of groves were infested with adults. 78% of groves had eggs on new leaves.
60% of groves have larvae on new leaves but only in normal moderate numbers. Increase is
expected.
Mealybug currently is present in only 3% of groves. It will become much more abundant
in May and some heavy infestations may be expected by June.


575 May 7, 1971 WAS


W. A. Simanton




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