Title: Citrus insect and disease summary
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00066150/00093
 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 November 1970
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: VID00093
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

436 "1: *-

Statewide Index of Abundance
End Oct Mid Nov Trend End Oct Mid Nov Trend
Leaves --
2.0- -'-
'" Fruit

1.5- Rust mite

High for .,

1.0- High for
scales; >Glover sc
whitefly Whitefly L
---Purple sc
C. red mite-----
0.5- -- -
) -->Snow sc
Texas C. mite

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 on Leaves: 88% of groves infested (Norm 69%); 77% economic (Norm 51%).
Citrus Rust Mite on Fruit: 89% of groves infested (Norm 73%); 71% economic (Norm 54%).
Population on both leaves and fruit is the highest for November in 19 years of
record. It is close to the all time high record for any month in 19 years. A downward
trend is expected before December. All districts are high: Central (2.47) South (2.29)
West (2.27) North (2.15) and East (1.53).

Citrus Red Mite: 34% of groves infested (Norm 32%); 10% economic (Norm 8%).
Texas Citrus Mite: 30% of groves infested (Norm 27%); 15% economic (Norm 10%).
Both of these spider mites are slightly above normal abundance and in the low range.
Although populations recently increased, little further change is expected. Highest
districts for citrus red mite are Central (.68) and West (.67); for Texas citrus mite
the highest districts are Central (.96) and North (.44).

Glover Scale: 81% of groves infested (Norm 65%); 7% economic (Norm 12%).
Purple Scale: 72% of groves infested (Norm 61%); 3% economic (Norm 5%).
Populations of both species recently increased and now are slightly above normal.
They are still in the moderate range and very few infestations are heavy. Little change
is expected. Highest districts for Glover scale are North (1.07) and South (.89). For
purple scale, highest districts are North (.89) and Central (.75).
Black Scale: 52% of groves infested (Norm 32%); 24% economic (Norm 10%).
Population increased and is now much above average and in the moderate range.
Only 8% of infestations are heavy enough to be important. Gradual decrease is expected.
Highest districts are Central (1.32) and East (1.09).
Yellow Scale: 42% of groves infested (Norm 55%); 1% economic (Norm 8%).
Population is below normal and low in all districts. Little change is expected.
Chaff Scale: 42% of groves infested (Norm 41%); 1% economic (Norm 6%).
Population is normal and will remain at the present low level in all districts.
Snow Scale: 24% of groves infested; 15% with moderate or heavy infestation. Population
is above normal and spotty. Slight decrease is expected.
Whitefly: 85% of groves infested; 6% economic.
Population dropped out of the high range but is still above normal. Slight decrease
is expected. Highest districts are East (1.04) and West (1.00).

Spray Notes: Rust mites are still abundant in many groves and may persist through the
winter. Some groves will have a gradual build-up of spider mites. Combination miticides
for use in fall and winter to control all mite species are: Delnav 4 liquid, ethion 4
liquid, or Trithion 4 liquid at 2.5 pints per 500 gallons of spray; use Kelthane MF at
5.0 pints. Do not use Kelthane in snow scale infested groves unless a scalicide is

600 November 18, 1970 WAS

W. A. Simanton

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