Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00103
 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 June 1971
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: VID00103
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



9/-30
S 7/3


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AREC-LA Mimeo
Series 71-30


CITRUS INSECT AND DISEASE SUMMARY
END OF MAY 1971

Statewide Index of Abundance
Trend id ay
Trend Mid May


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: 68% of groves infested (Norm 44%); 50% economic (Norm 27%).
Population decreased on leaves but is still in the high range and above normal. Popu-
lation on fruit increased strongly and is above normal although still at moderate level.
Erratic increase is expected in June. Highest districts are West (2.11) and North (1.63).
Citrus Red Mite: 66% of groves infested (Norm 57%); 36% economic (Norm 32%).
Population has jumped above normal and is about to enter the high range. Further
increase is expected. Highest districts are South (1.52) and West (1.40).
Texas Citrus Mite: 68% of groves infested (Norm 59%); 41% economic (Norm 38%).
A strong increase has placed the population above normal and into the high range.
Further increase is predicted until early July. Highest districts are Central (1.69) and
South (1.44).
Six-spotted Mite: 15% of groves infested (Norm 14%); 4% economic (Norm 3%).
Population is slightly above normal. Decrease is predicted.
Glover Scale: 90% of groves infested (Norm 84%); 23% economic (Norm 28%).
Population is at the high level normal for June. Slight increase is expected.
Highest districts are South (1.67) and West (1.07).
Purple Scale: 76% of groves infested (Norm 81%); 7% economic (Norm 12%).
Population will continue to be below normal. Most infestations will be light.
Highest district is North (1.03).
Chaff Scale: 52% of groves infested (Norm 69%); 2% economic (Norm 15%).
Population will continue below normal and low in all districts despite a slight
increase.
Yellow Scale: 33% of groves infested (Norm 66%); none economic (Norm 11%).
This is the lowest May population since 1963. All districts will remain low.
Snow Scale: 28% of groves infested; 22% economic. Population is higher than in any prior
month. Increase is expected.
Black Scale: 8% of groves infested (Norm 48%); 3% economic (Norm 26%).
Population is the lowest for May since 1960. The very low level will persist in all
districts until late June.
Whitefly population will remain near the current moderate level normal for May.
Mealybug: 14% of groves infested (Norm 41%); none economic (Norm 11%).
Population is below normal and very low. Rapid increase is expected late in June.
Spray Notes: The summer spray for scales, whitefly, mealybug and greasy spot will be
more timely in most groves this year if delayed until July. However, it can be applied
earlier in combination with a miticide if mite control is needed in June.


575 June 2, 1971 WAS


AGRICULTURAL RESEARCH AND EDUCATION CENTER
LAKE ALFRED, FLORIDA


W. A. Simanton




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