Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00088
 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 August 1970
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: VID00088
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 7/--6 CITRUS EXPERIMENT STATION 71
CES Mimeo Series 71-6
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
MID-AUGUST 1970

Statewide Index of Abundance
End July Mid Aug. Trend End July Mid Aug. Trend
-2.0 --- Fruit

Rust mite a --
Leaves

-.5
High for \ 7 --- ->WF Adult
mites
C. red mite i- i A
\h-,' ^ --> WF \Larva
\ '-. --.> Mlybug
O whitefly, ~Black sc
Texas C. mite O m mealybg J Glover s

.5.5. ,., ,:





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: 78% of groves infested (Norm 59%); 64% economic (Norm 45%).
Population decreased on leaves but increased on fruit. Both indexes are in the
high range and above normal. Decrease is expected. All districts are high: West
(2.44) North (2.08) South (1.82) Central (1.58) and East (1.50).
Citrus Red Mite: 52% of groves infested (Norm 44%); 24% economic (Norm 22%).
Population dropped out of the high range and will continue to decrease. It is
near normal for August. Highest districts are West (1.11) and South (.92).
Texas Citrus Mite: 41% of groves infested (Norm 46%); 24% economic (Norm 21%).
This mite is decreasing and will soon be at the normal low level for August.
Highest district is South (.83).
Glover Scale: 76% of groves infested (Norm 61%); 11% economic (Norm 15%).
Population dropped to the moderate level normal for August and will decrease
further. Highest district is North (1.06).
Purple Scale: 63% of groves infested (Norm 56%); 7% economic (Norm 3%).
This scale decreased from moderate to low level but is still slightly above
normal for August. Decrease is expected. Highest district is North (1.06).
Yellow Scale: 42% of groves infested (Norm 55%); 10% economic (Norm 6%).
Population dropped sharply and will continue in the low range. Highest district is
North (1.06).
Black Scale: 69% of groves infested (Norm 68%); 35% economic (Norm 49%).
Population decreased and will soon be at moderate to low level. It will continue
below normal. Highest districts are East (1.58) West (1.67) and Central (1.18).
Snow scale is less abundant than in the past 3 months. About 9% of groves will have
moderate to heavy infestations. Little change is expected.
Chaff scale will continue to be below normal and unimportant in all districts.
Whitefly: 71% of groves infested; 27% economic.
This pest has decreased but is still at high level and above normal. Little
change is expected.
Mealybug population dropped to moderate level and will continue to decrease. It is
higher than normal for August.

Spray Notes: In groves with a history of brown rot, it is advisable to apply a copper
spray to the lower 6 feet of tree in August. Use 3.5 pounds of neutral copper (52-56%
copper) or equivalent per 500 gals. Chop cover crop to improve ventilation.


600 August 20, 1970 WAS


W. A. Simanton




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