Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00099
 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 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: VID00099
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



SAGRIC LTURAL RESEARCH AND EDUCATION CENTER AREC-LA Mimeo
\ LAKE ALFRED, FLORIDA Series 71-22

\y C RUS INSECT AND DISEASE SUMMARY
\ ^ \ MID-MARCH 1971

\ O\' Statewide Index of Abundance
I r I I I
\ y Mid Mar. Trend End Feb. Mid Mar. Trend



Rust mite Lvs.
.--' ...--
1.5
C_----
Rust mite Frt. High for
rust mite

-1.0 __High for ..---) Glover s
scales; white ---"
Citrus red mite fly; winter .------>Purple s
0---_0_ .--> high for
S CRM & TCM VWFLY L
-0.5 x> Snow c
Texas C. mite
SAphids


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 61%); 54% economic (Norm 40%).
The recent upward trend is expected to continue. It will keep population above normal
and in the high range on both leaves and fruit. Highest districts are South (2.22) West
(2.07) North (1.48) and Central (1.35).
Citrus Red Mite: 48% of groves infested (Norm 39%); 17% economic (Norm 15%).
Gradual increase is expected from now through June. Population will be at normal
moderate level in March. Scattered heavy infestations will be important especially in
young groves. Highest districts are South (.96) and North (.73).
Texas Citrus Mite: 34% of groves infested (Norm 31%); 12% economic (Norm 14%).
Although population is still at the normal low level for March, it will start to
increase before April and continue into June. Some heavy infestations may be expected
in all districts. Highest districts are East (.65) and South (.64).
Six-spotted Mite: 7% of groves infested; 1% economic. Increase is expected in April.
Glover Scale: 87% of groves infested (Norm 80%); 10% economic (Norm 16%).
Population is near normal. It is expected to enter the high range by April and
gradually increase. Highest districts are South (1.16) East (1.00) and West (1.00).
Purple Scale: 77% of groves infested (Norm 79%); 3% economic (Norm 9%).
Population will increase slightly but will stay below normal and at moderate level.
Highest district is North (1.03).
Chaff Scale: 57% of groves infested (Norm 61%); 2% economic (Norm 10%).
Although an increase is predicted, this scale will remain below normal and at low
to moderate abundance.
Yellow Scale: 37% of groves infested (Norm 63%); none economic (Norm 12%).
Population is the lowest since 1963 and will remain low in all districts.
Snow Scale: 30% of groves infested; 18% economic. Population is higher than in any prior
month and will increase after March.
Black Scale: 17% of groves infested (Norm 30%); 4% economic (Norm 13%).
Population is much below normal and at low level. Gradual increase is expected in
April. Highest district is West (.75).
Aphids have appeared in 13% of groves since February. Rapid increase is expected until
mid-April.
Whitefly adults will appear on new foliage in large numbers.
Spray Notes: Both the foliage growth and the bloom will be very irregular this year in
many groves. The date the fruit crop sets will vary greatly. This will be more noticeable
in groves that were injured by cold even if the injury was only moderate. Careful planning
and timing of pre-bloom and post-bloom sprays will be necessary for adequate protection of
the new foliage and fruit.


600 March 17, 1971 WAS


W. A. Simanton




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