Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00045
 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 July 1968
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: VID00045
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 CES Mimeo Series 69-5
5 LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF JULY 1968

Statewide Index of Abundanc__
I ,~~,--->
Mid End Tyrend Mid End- Trend
2.0 July July ,-- July July -
-2.0
Frt /' Lvs Black scale
Rust mite '
-

-1.5 Texas C. mitE
-.. High for Mealybug
mites x

O High for
-l.0 scales---
SWhitefly

C. red mite
-0.5 Glover scale





NOTE: Only pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.

Rust Mite: 78% of groves infested (Norm 60%); 58% economic (Norm 41%).
Population is much above normal and in the very high range. Further increase is
expected until mid-August, followed by a decrease extending to mid-September. Highest
districts are West (2.50) South (2.27) and Central (2.00) East has a high count of
rust mites on fruit but not on leaves.
Texas Citrus Mite: 73% of groves infested (Norm 68%); 49% economic (Norm 42%).
Population will drop out of the high range by the end of August and continue to
decrease. It will be slightly above the normal level for August. Highest districts
are West (1.80) Central (1.75) and South (1.43).
Citrus Red Mite: 52% of groves infested (Norm 65%); 27% economic (Norm 37%).
Population did not attain the high range for mites as reported in error at mid-July.
It remained at moderate level considerably below normal for July. Decrease to low level
is expected. Highest district is Central (1.04).

Black Scale: 93% of groves infested (Norm 79%); 79% economic (Norm 61%).
Population has started to decrease from the mid-July peak which was much above normal
and at very high level. Greater decrease is expected after mid-August. All districts
are still high: East (2.86) Central (2.38) West (2.20) South (2.07) and North (1.86).
Glover Scale: 63% of groves infested (Norm 80%); 4% economic (Norm 32%).
Purple Scale: 49% of groves infested (Norm 71%); none economic (Norm 8%).
Chaff Scale: 23% of groves infested (Norm 66%); none economic (Norm 7%).
Yellow Scale: 67% of groves infested (Norm 62%); none economic (Norm 10%).
Snow Scale: 18% of groves infested; 4% economic. (No norms established.)
Four of the 5 armored scales listed above are below normal abundance. Moderate to
heavy infestations of Glover and/or snow scale will occur in scattered groves. Little
change in the scale situation is expected in August.
Mealybug: 81% of groves infested; 26% economic. Population is slightly above normal for
July. Gradual decrease is expected.
Whitefly: 56% of groves infested; 31% economic. Population is moderate and above the
July normal. Decrease is expected.

Spray Notes: Rust mite often becomes numerous in August, especially where the summer
spray was applied in June. If an extra rust mite spray is needed, use chlorobenzilate 4E
at 1.25 pints, sulfur at 25 pounds, nabac 50E at 0.5 pint or Guthion LC2 at 5.0 pints
per 500 gallons of spray. Guthion is also effective against snow scale, other scales
and whitefly if applied as a full coverage spray. Its use is limited to 2 sprays per
year on fruit.


625 August 2, 1968 WAS


W. A. Simanton




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