Title: Citrus insect and disease summary
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00066150/00127
 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 August 1972
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: VID00127
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


AUG 4 1972

I.F.A.S.- Univ. of Florida CS-1972-22
450-8/2/72-WAS-Lake Alfred, Fla.

END OF JULY 1972 B k
0s Black Scale
Statewide Index of Abundance
Mid July End' July Trend Mid'July End'July\ Trend
2.0 on -
Rust frt -.._->
mite *\ .
mie on leaves

Texas C. mite High
3__ High for
mites V
mites ^ ~ Whitefly L

1.0 High for Whitey
scales; .
whitefly ----> Glover s :ale
Snow sca e
> Mealybug
0.5 -----0

C. red mite

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: 84% of groves infested (Norm 70%); 66% economic (Norm 51%).
Population continued to increase and is nearing the summer peak. It is much above average
and very high on leaves and fruit. Although many groves will show decrease in late August,
numerous groves will continue to develop or maintain infestations into September. All dis-
tricts are high: South (2.57) West (2.22) Central (2.00) North (1.45) East (1.44).
Texas Citrus Mite: 68% of groves infested (Norm 66%); 48% economic (Norm 42%).
The summer peak of population occurred in early July, about two weeks later and slightly
higher than average. Decrease to low level is expected by September. Highest districts are
West (2.10) Central (1.97) and East (1.53).
Citrus Red Mite: 35% of groves infested (Norm 63%); 10% economic (Norm 35%).
Population of this mite peaked early in July at the lowest summer level in 21 years of
record. It will continue in the low range. Highest district is South (.88).
Black Scale: 96% of groves infested (Norm 80%); 88% economic (Norm 61%).
Population peaked at the normal time in early July, but at the highest level in 21 years
of record. Gradual decrease is expected. All districts are high: Central (2.63) East (2.47)
South (2.38) West (2.20) and North (2.18).
Citrus Snow Scale: 36% of groves infested; 23% economic.
Population again increased and is higher than in any prior month. Little change is expected.
Glover Scale: 78% of groves infested (Norm 77%); 6% economic (Norm 22%).
Population of this scale is lower than normal and infestations are lighter. Little change
is expected from the present moderate level. Highest district is West (1.00).
Purple Scale: 70% of groves infested (Norm 68%); 2% economic (Norm 6%).
Population is near normal and low to moderate. Little change is expected.
Yellow Scale: 34% of groves infested (Norm 60%); none economic (Norm 9%).
Chaff Scale: 42% of groves infested (Norm 52%); none economic (Norm 5%).
These two armored scales are below normal abundance and occur only as light infestations.
Green Scale: 30% of groves infested (Norm 7%); 127 economic (Norm 1%).
This soft scale is more widespread and abundant than in any prior month in 21 years of record.
Whitefly: 83% of groves infested (Norm 61%); 34% economic (Norm 25%).
Population will remain above normal and in the high range despite an expected decrease in
August. Highest districts are East (1.86) and Central (1.28).
Mealybug: 68% of groves infested (Norm 69%); 13% economic (Norm 21%).
Population is below normal, in the moderate range, and is decreasing.
SPRAY NOTES: Application of the summer oil spray to early maturing varieties should be com-
pleted by mid-August to avoid the possibility of delayed coloring of fruit.

W. A. Simanton

August 2, 1972

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