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December 1964 ARS 33-100 
UNITED STATES DEPARTMENT OF AGRICULTURE 
Agricultural Research Service 
Boll Weevil Control with Emphasis on Early-Season and 
Fall Treatment in 1960, 1961, and 1962 at Tallulah, La. 
By G. L. Smith, Ly CO LeVveLangd andi) snr. eller) 
Entomology Research Division 
Results of research conducted in Texas, Louisiana, and Mississippi on 
treating cotton with an insecticide during the fall to reduce or eliminate 
overwintering boll weevils (Anthonomus grandis Boheman) indicated that lower 
seasonal populations might make this method more effective and that a combina- 
tion of treatments might result in eradication. To evaluate this approach to 
control, community-wide experiments with early-season, late-season, and fall 
treatments were conducted near Tallulah, La., in 1960, 1961, and 1962. Results 
of these experiments are given in this report. 
All infestation records were made by Tallulah laboratory personnel. 
Materials for the early-season and fall treatments were furnished by several 
insecticide companies. The National Cotton Council made some funds available 
for conducting the experiment in 1960. Early-season treatments were made 
with ground equipment, but most of the late-season and fall treatments were 
made with airplanes. 
1960 Experiment 
Three communities with some isolation—Hunter's Bend, Houston Ridge, and 
Quimby —received early-, late-season, and fall treatments for boll weevil 
control. Three similar communities receiving only late-season treatment were 
used as checks or untreated areas, 
In the treated areas, Hunter's Bend, in the southern end of Madison 
Parish on the Tensas River, had 165 acres TOE cotton in 16 fields on 10 farms. 
The nearest cotton was srown about 33 miles away. Houston Ridge, h miles 
south of Tallulah, had 64 acres in four fields on three farms. Tt is 
surrounded by inser. Other cotton was grown 2 miles away. Quimby, on 
Highway 65 in the southern end of Madison Parish, had 36 acres of cotton on 
one farm 2 miles from other cotton. 

1/ Retired. 
2/ Deceased, 
