Title: Citrus insect and disease summary
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00066150/00043
 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 June 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: VID00043
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

S : LAKE ALFRED, FLORIDA CES Mimeo Series 69-2

SEP 17 i3-3 END OF JUNE 1968

Statewide Index of Abundance -
Mid .End. Trend Mid nTrend
-2.0 June June June /June
/ Black Scale
Texas C. mite /
1.5 lover Scale
Lvs .'------> High for Mealybug
Rust mite mites
Frt-7----- ---------mites7>
-1.0 -~~0--- High for ____ _---_______
-1.0 scales -
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.
Rust Mite on Leaves: 63% of groves infested (Norm 49%); 41% economic (Norm 27%).
on Fruit: 54% of groves infested (Norm 48%); 38% economic (Norm 26%).
Population decreased but is still above normal and in the high range. Little change
is expected. Highest districts are West (1.90) South (1.53) and Central (1.46).
Texas Citrus Mite: 81% of groves infested (Norm 76%); 48% economic (Norm 57%).
Population appears to have reached the summer peak slightly below the normal high
level for June. Decrease is expected by the end of July. Scattered heavy infestations
will occur. Highest districts are Central (1.88) South (1.87) and West (1.50).
Citrus Red Mite: 61% of groves infested (Norm 69%); 28% economic (Norm 45%).
Population was the lowest for June in 17 years of record. Although this mite is
nearing the summer peak of abundance, it is still at moderate level. Population is ex-
pected to decrease after mid-July. Very few infestations will be important. Highest
districts are North (1.14) and West (1.08).
Black Scale: 93% of groves infested (Norm 81%); 79% economic (Norm 59%).
A sharp increase has taken population to the highest June level in 17 years. Ad-
ditional increase is expected in July, followed by decrease in August. All districts
are high: East (2.73) South (2.29) Central (2.24) North (1.95) West (1.93).
Glover Scale: 87% of groves infested (Norm 85%); 21% economic (Norm 35%).
Population is below normal but is in the high range and is expected to remain high
until August. Highest districts are South (1.46) and East (1.36).
Purple Scale: 60% of groves infested (Norm 82%); none economic (Norm 15%).
Population is the lowest ever recorded for June, and will remain near this level.
Highest district is West (.73).
Chaff Scale: 50% of groves infested (Norm 78%); 2% economic (Norm 20%).
This scale is also at the lowest June level in 17 years of record. Little change
is expected. Highest district is East (.73).
Yellow Scale: 69% of groves infested (Norm 70%); 3% economic (Norm 14%).
Population is below normal and will remain in the low to moderate range in most
districts. Highest district is West (.87).
Snow Scale is present in more groves (16%) than last June (12%) but infestations are lighter,
Whitefly population reached the normal high level for June and will decrease.
Mealybug population has entered the high range and will remain near the normal high level
through July. A few scattered infestations will be important.
Spray Notes: Sprays to control greasy spot disease should be applied 4 to 6 weeks after
the summer flush. Oil is effective, but if oil is not included in the summer spray,
1.5 pounds of metallic copper per 500 gals. should give good control. Increase the copper
to 2.5 pounds in groves that did not receive copper in the post bloom spray.

625 July 10, 1968 WAS

W. A. Simanton

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