72 ANNUAL REPORTS OF DEPARTMENT OF 
before April L5. The third measure In the program Is th< planting of small 
plots of cotton to trap the later moths. The cotton Is plan ed In the fields as 
early In the spring as possible, with the farmers preparing the soil, planting, 
and taking care of the cotton until i> reaches the blooming Btage. Inspect 
this project colled and destroy all blooms dally. This year cool weather during 
April bo retarded the plot cotton that it did aot get as early a start as usual 
The weather, of course, affected the field cotton also; and even though the trap 
plots \\<rc qoI as Ear ahead of the field cotton as desired, Indicationa were thai 
they \\ in serve tin lr purp •••. Much Larger plots than usual arc being used this 
year, and as a result it is impossible to Inspect all of the blooms. Enough 
blooms are Inspected, however, to give some Idea of the moth emergence. The 
cotton began blooming aboul the firsl of June, and by the middle of the month 
a considerable Dumber of worms were being found. The last week of June 
there was a considerable decrease in the Dumber found. The field cotton was 
beginning to bloom by the close of the fiscal year, and a few specimens were 
being found in some of the fields, but it K -till too early to obtain very accurate 
indications as to what the Infestation will he like this coming season. 
CHANGES IN REGULATIONS 
The pink bollworm quarantine regulations were revised effective December 5, 
1935, for the purpose of releasing from restriction all part- of the State of 
Georgia formerly included in the regulated areas. The regulated areas under 
this revision DOW include 3 counties in southern Arizona. 14 in north-central 
Florida, D in southern New Mexico, and IT entire counties and parts of 4 addi- 
tional ones in western Texas. Of this area five counties and part of another in 
Texas are designated as heavily infested and the other areas as lightly inf< 
on March 1. 1936, administrative instructions were issued approving alternate 
treatments for haled lint cotton from heavily infested areas. These treat- 
ments are (1) steam sterilization when followed by standard or high-density 
compression and (2) roller treatment of lint, with proper safeguards against 
contamination. 
(mi April i.",. lit::*;, administrative instructions were issued allowing the move- 
ment of haled cotton lint and linters produced from sterilized cottonseed from 
the regulated areas of Florida without restriction other than a permit. This 
action was taken because no pink bollworm infestation was found in the regu- 
lated area of Florida during the 1935 season. 
CONTROL AND ERADICATION MEASURES 
The present measures enforced to control and prevent the spread of the pink 
bollworm from Infested areas are (1) disposal of gin trash: (2) sterilization of 
seed; (3) supervision of oil mills; iii fumigation, compression, steaming, and 
roller treating of lint; and I •". ) road stations. 
DISPOSAL of (.I\ IB \>ll 
Practically all gins are equipped with cleaning machinery which removes b 
considerable amount of trash from seed cotton before it enters the -in stands. 
Fink bollworm larvae, the Dumber depending upon the degree of Infestation, are 
discharged with the gin trash. The trash Is therefore disposed of by burning, 
sterilization, or grinding op until the first killing frost in the fall. 
SI ' li sl'l Kll 1/. \ T|e\ 
Gins within the regulated areas are equipped with machines whereby seed Is 
heated to a temperature of lire f. as a continuous process *'f ginning, inas- 
much as the principal means whereby pink bollworm infestation is Bpread is 
Infested seed, sterilization is the most important single measure enforced against 
the iii-ect. These sterilizers a re a 1 1 equipped with a thermograph which records 
the temperature of the seed at all time-. During the BeaSOD IOC sterilizers were 
operated and Blightlj over 128,000 tons of si-i^\ were treated. The regulations 
permit Seed beated to 146 for •"•<> minutes, and handled thereafter so as to pro- 
\eiii contamination, to move to any designation. This treatment i< to take care 
of planting seed, and during the season several tons were so treated. 
