Title: Citrus insect and disease summary
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00066150/00044
 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 July 1968
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: VID00044
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

5 T CES Mimeo Series 69-4

Statewide Index of Abundance
I I I ----= -_ I
End Mid End Mid ', Trend
2.0 June July en June July
Black scale
Texas C. mite-)

1.5 -
Lvs -- High for Mealybug
Frt ~ Rust mite mites --
-1. 0 -----O -> High for _
C. red mite scales
Whitefly y

-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: 69% of groves infested (Norm 56%); 44% economic (Norm 32%).
Population advanced and further increase is expected. It is above normal and will
continue in the high range through August. Fruit will be more heavily infested than leaves.
Highest districts are West (2.11) South (1.94) and Central (1.86).
Texas Citrus Mite: 80% of groves infested (Norm 76%); 54% economic (Norm 53%).
Population is at the summer peak and near the normal high level for July. Although
decrease is expected, some heavy infestations will occur in all districts. Highest dis-
tricts are South (1.90) Central (1.75) West (1.67) and North (1.50).
Citrus Red Mite: 62% of groves infested (Norm 71%); 33% economic (Norm 43%).
Population has entered the high range but is below normal and is expected to decrease.
Scattered groves will harbor a few heavy infestations. Highest districts are North (1.33)
and West (1.22).
Black Scale: 93% of groves infested (Norm 83%); 80% economic (Norm 63%).
The summer peak of population was attained in early July and was much higher than
average. Gradual decrease may be expected. Considerable sooty mold will result where
heavy infestations are allowed to exist. All districts are still high: East (2.75)
South (2.41) Central (2.36) West (2.08) and North (1.79).
Glover Scale: 72% of groves infested (Norm 82%); 14% economic (Norm 32%).
A sharp decrease has taken population out of the high range. It will continue to be
below normal and will drop to low level. Highest districts are East (1.25) and
South (1.23).
Snow Scale: Populations are spreading and increasing. This is more evident in infested
young groves than in the bearing groves included in our survey.
Purple Scale: 60% of groves infested (Norm 78%); none economic (Norm 14%).
This is the lowest July population in 17 years of record. Further decrease is expected
Chaff Scale: 40% of groves infested (Norm 73%); 2% economic (Norm 15%).
Population is very low for July.and may go lowet..
Yellow Scale: 66% of groves infested (Norm 66%); 2% economic (Norm 13%).
July population is lower than in the four prior years. Little change is expected.
Highest districts are West (.92) and East (.90).
Whiteflies: 64% of groves infested; 26% economic. Population is expected to be at moderate
to high level and slightly above normal.
Mealybugs: 81% of groves infested; 32% economic. Population is near normal. It is ex-
pected to remain in the high range until mid-August.
Spray Notes: Trees with snow scale in any amount should receive a summer spray applied
to thoroughly wet interior wood, leaves, and fruit. Use 2.5 pint of parathion 4 liquid
per 500 gal; or 5.0 pint Guthion LC; or 0.5% to 0.7% FC oil with 3.75 pint ethion 4 liquid
or with 1.25 pint parathion 4 liquid or with 3 quarts malathion 5 liquid; or 5.0 pint
Diazinon 4 liquid.
625 July 19, 1968 WAS W. A. Simanton

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