Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00079
 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 March 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: VID00079
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
O
0
, < -.- CITRUS EXPERIMENT STATION ,

Es LAKE ALFRED, FLORIDA CES Mimeo Series 70-26
E CES Mimeo Series 70-26
CITRUS INSECT AND DISEASE SUMMARY
END OF MARCH 1970

Statewide Index of Abundance
Mid End Mid End '
Trend Trend
Mar. Mar. Mar. Mar.
2.0


Rust mite

-1.5 Leaves
----V-- ----High for
Fruit mites Whitefly L

-1.0 High for V--_
scales, -
whitefly Glover scale-
0- - -> 0 O
C. red mite Yellow scale
0.5

-0--5---- -D Aphids
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: 75% of groves infested (Norm 60%); 44% economic (Norm 40%).
Population remained above normal and in the high range. Increase is expected on both
leaves and fruit. Highest districts are West (1.73) South (1.52) East (1.45) and Central
(1.30).
Citrus Red Mite: 47% of groves infested (Norm 43%); 16% economic (Norm 17%).
Population is near normal and in the low range. Gradual increase is expected to start
in mid-April and result in scattered heavy infestations in all districts. Highest dis-
tricts are West (.81) and North (.77).
Texas Citrus Mite: 23% of groves infested (Norm 35%); 4% economic (Norm 15%).
Population is at the lowest March level in the past 11 years. Although increase is
expected, population will remain low through April. Highest district is Central (.43).
Six-spotted Mite: 8% of groves infested (Norm 9%); 1% economic (Norm 1%).
This mite is expected to remain near the current low level until late April; then
gradually increase.
Glover Scale: 82% of groves infested (Norm 79%); 10% economic (Norm 19%).
Population will continue at the current moderate level which is slightly below normal
for March. Highest districts are North (1.00) and West (1.00).
Purple Scale: 68% of groves infested (Norm 79%); 7% economic (Norm 10%).
Little change is expected from the present moderate and slightly subnormal level.
Highest district is North (.94).
Chaff Scale: 49% of groves infested (Norm 65%); 2% economic (Norm 12%).
Population is below normal and in the low range. Slight increase is expected.
Highest district is South (.62).
Black Scale: 10% of groves infested (Norm 29%); 2% economic (Norm 11%).
The present very low population is the lowest since 1963. It will remain low and
unimportant in all districts.
Yellow Scale: 65% of groves infested (Norm 65%); 5% economic (Norm 12%).
Population is slightly below normal and low. Little change is expected. Highest
district is North (1.03).
Citrus Snow Scale: 25% of groves infested; 10% with moderate or heavy infestations.
Population is higher than in any prior March. A strong spring increase has started.
Whitefly: 61% of groves infested (Norm 61%); 35% economic (Norm 15%).
Populations of the larval and pupal forms are the highest for March in 19 years of
record. These will change in April to a very high population of adult flies.
Aphids: 26% of groves infested (Norm 24%); less than 1% economic (Norm 1%).
Population is near normal and in the low range. It will increase through mid-April.
Spray Notes: The second fungicidal spray for scab control should be applied at 2/3 petal
fall. Apply a scalicide post bloom where snow scale is present.


600 April 2, 1970 WAS


W. A. Simanton




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