Title: Citrus insect and disease summary
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00066150/00019
 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 1967
Copyright Date: 1966
Frequency: semimonthly
Subject: Citrus -- Diseases and pests -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
periodical   ( marcgt )
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: VID00019
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

MID-MAY 1967

Statewide Index of Abundance
End Mid End Mid
Trend Trend
Apr May Apr May
Texas C. mite

1.5 -) Scales
Rust mite High for
mites -> Glover

0 High for purple
10 ---- scales

C. red mite o o Chaff

S0.5 -. Black


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

Rust Mite: 67% of groves infested (Norm 49%); 57% economic (Norm 28%).
Population is at a record high level for May. It will continue to be high on a state-
wide basis, but with localized increases and decreases. All districts are high: Central
(1.89) South (1.75) East (1.50) North (1.40) and West (1.40).
Texas Citrus Mite: 67% of groves infested (Norm 49%); 47% economic (Norm 24%).
Population is the highest ever recorded in May and further increase is expected.
Highest districts are North (1.92) West (1.57) Central (1.48) and South (1.36). All
districts will have numerous heavy infestations through June.
Citrus Red Mite: 57% of groves infested (Norm 51%); 28% economic (Norm 31%).
Population is near the average of recent years. Slight decrease is expected in May
and will be followed by an increase into the high range in June. Scattered heavy in-
festations may be expected in all districts. Highest districts are North (1.24) South
(.91) and West (.86).
Six-spotted Mite: 16% of groves infested; 2% economic. This mite is below average
abundance. It will increase slightly then decrease by mid-June.
Mealybug: 17% of groves infested; 2% economic. Spotty heavy infestations are occurring
in scattered groves. A sharp increase in May is expected to put population in the high
range by June.
Whitefly larvae will increase until mid-June when population will be slightly above

Glover Scale: 87% of groves infested; 31% economic. Population is above average and in
the high range. Little change is expected. Highest districts are East (1.45-) South (1.42)
and Central (1.33).
Purple Scale: 83% of groves infested; 16% economic. Population is near normal and near
the high range. Very few infestations will be important. No change is expected. Highest
districts are Central (1.30) and North (1.00).
Yellow Scale: 72% of groves infested; 2% economic. Population will be below average and
of little concern. Highest district is Central (.87).
Chaff Scale: 66% of groves infested; 7% economic. Population is below normal and little
change is expected. Highest district is Central (.90).
Black Scale: 23% of groves infested; 9% economic. Increase has started and will continue
through June. The summer peak is expected to be below average.

Spray Notes: Any of the mites can be destructive to drouth-stricken trees if present in
large numbers. The miticides mentioned in the May 3 issue can be used but may not be
very effective if mites are already on more than 15% of leaves or fruit. Do not apply
oil sprays to trees unless soil moisture is good. Fresh fruit crops like Temples and
tangelos may suffer fruit burn if sprayed with sulfur at temperatures above 90 F.

700 May 16, 1967" WAS

W. A. Simanton

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