Title: Citrus insect and disease summary
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Permanent Link: http://ufdc.ufl.edu/UF00066150/00105
 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 July 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: VID00105
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
u


5 7.-- AREC-LA Mimeo
AGRICULTURAL RESEARCH AND EDUCATION CENTER Series 72-2
LAKE ALFRED, FLORIDA

CITRUS INSECT AND DISEASE SUMMARY
END OF JUNE 1971

Statewide Index of Abundance
Mid June End June Trend Mid June End June Trend
2.0 Texas ---
C. mite -e> /7
7

,- -- \ > WFLY -
1.5 C. red Black sc
Lvs. A' re v
,Hi mite High for B
mites .
Frt. -- > Glover s
r--Rust mite High for -- ----- > WFLY I
1.0 scales; v / 7 Mealybug
---whitefly; /

SHUME LIBRARY i mealybug now
I Vs L_ Snow sc
0.5 x



I.F.A.S. Univ. of Florida
NO 'y pests or conditions of general or current interest are reported.
Forecasts are for 1 month in advance unless otherwise indicated.

Citrus Rust Mite: 767. of groves infested (Norm 51%); 53% economic (Norm 29%).
Population at the end of June was the highest for that period in 20 years of
record. Further increase to very high level is expected through July. Highest dis-
tricts are South (1.96) West (1.83) North (1.77) and Central (1.56).
Citrus Red Mite: 81% of groves infested (Norm 68%); 51% economic (Norm 43%).
Population is above normal and in the high range. Decrease is expected. Highest
districts are North (1.96) West (1.87) South (1.70) and Central (1.43).
Texas Citrus Mite: 86% of groves infested (Norm 77%); 70% economic (Norm 56%).
This mite also is above normal and in the very high range. Decrease is expected
at mid-July. All districts are high: North (2.39) Central (2.20) South (2.13) East
(1.67) and West (1.67).
Glover Scale: 93% of groves infested (Norm 86%); 25% economic (Norm 32%).
Population is near the normal high level for June. Gradual decrease is expected
in July. All districts are high: South (1.65) Central (1.23) West (1.07) East (1.05)
and North (1.04).
Purple Scale: 78% of groves infested (Norm 80%); 4% economic (Norm 13%).
Population is below normal and moderate. Slight increase is expected. Highest
districts are West (1.00) and South (.96).
Chaff Scale: 54% of groves infested (Norm 72%); 1% economic (Norm 17%).
Yellow Scale: 43% of groves infested (Norm 70%); none economic (Norm 12%).
Population will continue below normal and at low to moderate level in all districts
despite a slight increase.
Snow Scale: 25% of groves infested; 18% economic. Population has held rather constant
since March but is expected to increase in July.
Mealybug: 58% of groves infested (Norm 70%); 14% economic (Norm 29%).
Increase started about 3 weeks later than average this year. It will continue to
increase through July but is not expected to attain the high levels of the past two years.
Whitefly: 84% of groves infested (Norm 69%); 20% economic (Norm 15%).
Population of the immature forms is in the high range and slightly above normal.
These forms will be fewer in July, coincident with the current increase in adults.

Spray Notes: FC 435-66 spray oil is effective in controlling greasy spot when applied
at 1.0% concentration by volume within 1 month after expansion of the summer flushes.
Oil alone does not control snow scale. The 1971 Spray Schedule lists several scalicides
that are effective when used alone or with oil. Thorough coverage of all wood is neces-
sary to control snow scale.


550 July 1, 1971 WAS


W. A. Simanton




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