Title: Citrus insect and disease summary
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00066150/00104
 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 1971
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: VID00104
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 7 1-3

Series 71-31

TI'p pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.

Citrus Rust Mite: 62% of groves infested (Norm 45%); 42% economic (Norm 26%).
Infestations again decreased on leaves and increased on fruit, and are above normal
for both. Population on fruit is expected to enter the high range in July and continue
high into August. Highest districts are South (1.72) West (1.67) and North (1.43).

Citrus Red Mite: 80% of
Population is above
July. Highest districts

groves infested (Norm 63%); 47% economic (Norm 38%).
normal and in the high range with further increase expected into
are West (1.88) South (1.70) North (1.56) and Central (1.43).

Texas Citrus Mite: 77% of groves infested (Norm 69%); 54%
This mite is also above normal and in the high range.
be followed by decrease in July. All districts are high:
North (1.64) East (1.50) and West (1.38).

Glover Scale: 92%
Population is
(1.83) is highest.

economic (Norm 47%).
Further increase in June will
Central (2.04) South (1.87)

of groves infested (Norm 86%); 25% economic (Norm 30%).
near normal and in the high range in all districts. South district
Gradual decrease is expected in July.

Purple Scale: 72% of groves infested
Chaff Scale: 50% of groves infested
Yellow Scale: 35% of groves infested
Populations of these three scales
level in all districts.

(Norm 80%); 4% economic (Norm 11%).
(Norm 70%); 3% economic (Norm 15%).
(Norm 68%); none economic (Norm 11%).
will remain below normal and at low or moderate

Black Scale: 26% of groves infested (Norm 69%); 11% economic (Norm 49%).
Although population is the lowest for June since 1960, it will increase rapidly and
enter the high range in July. East district (1.09) is much higher than the others.
Snow Scale: 25% of groves infested; 18% economic.
This scale has erratic periods of increase and decrease. The fact that only 29% of
groves were found infested in early June, whereas 28% were found infested in May, does not
imply that 3% of groves no longer harbor the pest. Groves are considered infested only
if scales occur on specific areas of bark previously selected for examination.
Whitefly: 77% of groves infested; 23% economic. Population is near normal and is ex-
pected to be in the high range through July.
Mealybug: 31% of groves infested; 6% economic. Population will increase in June and July
but is not expected to reach the high level normal for those months.
Spray Notes: If the summer cleanup spray is to be delayed until mid-July, an interim spray
may be necessary to control rust mite. Chlorobenzilate and sulfur are satisfactory for
this supplemental application. Ethion, Trithion and Delnav may be used for the same
purpose and these three materials also control spider mite. Sulfur should be applied at
50 to 100 pounds per acre. Do not use sulfur within 3 weeks of an oil spray.

550 June 17, 1971 WAS



Statewide Index of Abundance

Mid-June Trend IEnd Mav Mi

W. A. Simanton

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