| Material Information
||Citrus insect and disease summary
||AREC-LA Mimeo series
||v. : ; 28-34 cm.
||Citrus Experiment Station (Lake Alfred, Fla.)
Agricultural Research and Education Center (Lake Alfred, Fla.)
||Citrus Experiment Station.
||Place of Publication:
||Lake Alfred Fla
||Mid February 1972
||Citrus -- Diseases and pests -- Periodicals -- Florida ( lcsh )
||government publication (state, provincial, terriorial, dependent) ( marcgt )
periodical ( marcgt )
||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>.
||Description based on: Mid July 1966; title from caption.
||Latest issue consulted: End of August 1972.
| Record Information
||University of Florida
||University of Florida
||All rights reserved by the source institution and holding location.
||oclc - 71265791
lccn - 2006229397
500-1/11/72-WAS-Lake Alfred, Fla.
AGRICULTURAL RESEARCH AND EDUCATION CENTER
LAKE ALFRED, FLORIDA
CITRUS INSECT AND DISEASE SUMMARY
END OF DECEMBER 1971
Statewide Index of Abundance
End Nov Mid Dec.
En- Dec. Tren
End Dec. Tram1
-a-- 9- 4
C. Rust mite
Texas C. mite
for CRM & TCM
End Nov. Mid Dec. End Dec. Trend
o .---o- ----> Black
.---.-'" --- Purpl
---- -- ----. --> Glove
C. red 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: 83% of groves infested (Norm 62%); 64% economic (Norm 43%).
Population is much above average and in the very high range on both leaves and fruit.
Increase is expected on leaves and slight decrease is expected on fruit. Highest districts are
West (2.33) South (2.21) North (2.00) Central (1.87) and East (.89).
Citrus Red Mite: 25% of groves infested (Norm 35%); 67% economic (Norm 12%).
This mite is below normal abundance and in the low range in all districts. Little change
is expected. Highest district is South (.59).
Texas Citrus Mite: 247 of groves Noinresrp aBnr. da d r.u turm 1L4/).
Population is below normal a d i h mloranirtri ts. Although incre
expected, very few groves will ha bor meLb (f H hest district is E
Glover Scale: 71% of groves infe ted (Norm 68%); 1. economic (Non 11%).
Population is below normal a d in the low range. Little chan is expected. Hig
district is West (.88). JAN 10
Purple Scale: 78% of groves infe ted (Norm 69%); 3% economic (No 67.).
This scale increased in Decel er and-is expected to increase irther in January.
population is in the low range ant y L sghth 6Lve y, 4it est districts are
and North (.90). .
Chaff Scale: 44% of groves infested (Norm )1%); 1% economic (Norm 6%).
Yellow Scale: 28% of groves infested (Norm 62%); none economic (Norm 11%).
Florida Red Scale: 15% of groves infested (Norm 20%); none economic (Norm none).
The latter species is expected to increase briefly but all 3 species will remain
below normal abundance and in the very low range.
Black Scale: 60% of groves infested (Norm 40%); 31% economic (Norm 16%).
Population was higher in December 1971 than in any prior December in 20 years of record.
Although this scale caused an increase in sooty mold, damage was not great because the summer
population was much lighter and later than normal. Little change from the current moderate
infestation is expected unless subfreezing weather occurs. Highest district is East (1.52).
Snow Scale: 28% of groves infested; 22% moderately or heavily infested. Population is higher
than in any prior December. Increase is expected. Due to the warm winter to date, this scale
has remained active which portends increased spread in 1972.
Whitefly population is at moderate level and slightly above normal with little change predicted.
Spray Notes: For scab control, the first application of ferbam or copper should be made just
before trees begin to flush. As an alternative, Difolatan 4F at 4 to 5 gal. per 500 gal. may
be used for scab and melanose control in a single application as a delayed dormant spray in
groves where overhead irrigation is available to further distribute the fungicide. Do not apply
to mature fruit or postbloom to fresh market citrus, as rind blemish may occur. Follow directions
on label. Difolatan is available under Florida Temporary Permit valid until May 1, 1972.
- - -- --
rLJ~-_l)n~\ lOI _____I_ 11___ 1~11\
W. A. Simanton
January 11, 1972