Title: Citrus insect and disease summary
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Full Citation
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00059
 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 April 1969
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: VID00059
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












-2.0




-1.5


S; (jz<


Statewide Inde


End
Mar.


Mid
Apr.


Trend


Rust mite

a-------^-----,
High for
mites


-1.0


-0.5


Texas C. mite
D- __ --'-
0 0
0- -------m
C. red mite


High for


scales;
aphids


MENT STATION


CES Mimeo Series 69-28


rV. Vi, , I- Trend







Aphids ,
Yellow 7 >
scale


0 9


Glover scale


'C


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

Rust Mite: 69% of groves infested (Norm 61%); 50% economic (Norm 41%).
Population is above normal and in the high range. Temporary decrease is expected
early in May. Highest districts are South (1.87) West (1.86) and North (1.79).
Texas Citrus Mite: 29% of groves infested (Norm 41%); 10% economic (Norm 19%).
Population is expected to remain below normal and in the low range. An upward trend
will be apparent in May as new leaves become infested. Highest districts are Cen-
tral (.56) and East (.56).


Citrus Red Mite:
This mite is
evident until May


29% of groves infested (Norm 48%);
also below normal abundance and at
when gradual increase is expected.


9% economic (Norm 17%).
low level. Little change will be
Highest district is East (.52).


Six-spotted mite is present in 7% of groves; less than 2% are economic. Gradual in-
crease is expected, but only a few scattered groves will develop important infestations.


Glover Scale:
Purple Scale:
Yellow Scale:
Chaff Scale:
Black Scale:


of groves
of groves
of groves
of groves
of groves


infested (Norm
infested (Norm
infested (Norm
infested (Norm
infested (Norm


80%); 8%
81%); 6%
66%); 5%
63%); 2%
26%); 4%


economic (Norm 22%).
economic (Norm 12%).
economic (Norm 11%).
economic (Norm 12%).
economic (Norm 10%).


All of the above listed scales are below average abundance for April. All are
presently at low or moderate level in all districts. Gradual increase is expected.

Snow Scale: 16% of groves infested; 5% with moderate or heavy infestations. Population
is higher for this date than in prior years. Activity is expected to intensify in May.


Whitefly Larvae:
Adults:
Eggs :
The whitefly


57% of groves infested; 9% moderate to heavy.
61% of groves infested; 9% moderate to heavy.
50% of groves infested; 5% moderate to heavy.
stages are near normal levels. Adults and eggs will become more numerous.


Mealybug population is still very low but is expected to increase in May.
Aphids: 58% of groves infested; 13% moderate to heavy.
Population increased sharply and is much above normal. It is expected to enter
the high range in April and continue high through mid-May; then decrease rapidly.

Spray Notes: Where melanose control is important use 3.75 pounds of metallic copper in
neutral form per 500 gal. and apply 1 to 3 weeks after petal fall. If melanose is not
important, time the spray to control rust mite before it infests more than 10% of young
fruit. Use chlorobenzilate, Nabac (dilute only), sulfur;or Guthion if a scale problem
also exists. Groves with active snow scale will benefit from a postbloom scalicide in
addition to the summer treatment.


625 April 17, 1969 WAS


CITRUS EXPERI]
LAKE ALF

CITRUS INSECT AN
MID-APR


'Wf LIBRARY
) DISEASE SUMMARY
L 1969A
1969ApR 211969
of Abundance
I r A fdi, r\f FIridal


I.I . -
I 1 Mar


I


W. A. Simanton




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