BUREAU OF PLANT QUARANTINE 21 
because similar infestations in the past have yielded to eradication measures. 
The pink bollworms are so scarce in these areas that they would probably have 
remained undiscovered, had it not been for improved methods of detecting 
them, particularly the use of the gin-trash machine. With this machine new 
infestations can be found while still exceedingly light, and without the expendi- 
ture of unduly large sums. The discovery of such infestations at a very early 
stage facilitates prompt control. 
NEW INFESTATIONS IN GEORGIA AXD FLORIDA 
On September 18, 1933, two larvae were discovered in gin trash at Enigma, 
Berrien County, in the southern part of Georgia, and 4 days later another 
specimen was found in gin trash at Brookfield, Tift County, about 5 miles away. 
This is the first time the insect has ever been found in the cotton fields in Georgia, 
and the infestation is very light, as is the case in the other new areas. Immedi- 
ately after these findings additional inspectors and gin-trash machines were sent 
to the area, and the State entomologist also placed a number of his men in the 
field. Gin-trash inspections were continued until the end of the season without 
any more specimens being found. Field inspections were concentrated in 
Berrien and Tift Counties, particular attention being given to the area around 
Enigma. It was not until October 27 that worms were found in the fields, 
on which date 9 living specimens were taken in a planting 2h 2 miles south of 
Enigma. The following day another specimen was taken on an adjoining farm. 
The field inspections were continued for some time without any additional 
specimens being found. 
The fact that so few specimens were found as a result of the intensive inspec- 
tions indicates that the infestation is extremely light and that a very small area 
is involved. This made it advisable to conduct a field clean-up campaign, and 
all fields within a radius of about l l > miles of the two infested fields were cleaned 
during November and the early part of December. The fields were small and 
scattered, and the work involved only 227 acres, which were cleaned at an average 
cost of $4.39 per acre. 
Shortly after this the Agricultural Adjustment Administration inquired of 
this Bureau as to the practicability of utilizing the cotton-curtailment program 
to aid in the control and eradication of the pink bollworm. After some considera- 
tion it was decided to eliminate the growing of cotton from the area where field 
clean-up had been conducted for the 1934 crop season. The farmers involved 
willingly signed contracts covering the acreage. About four rows of cotton, 
each 10 feet long, were planted in the two fields where infestation had been found, 
to see whether or not there would be a recurrence of the infestation. All of the 
blooms were to be picked daily and, as the cotton had been considerably 
retarded by rains, only a few had been produced by the close of the fiscal year. 
These were inspected without any signs of the insect being noted. 
On September 22, 1933. one dead larva of the pink bollworm was discovered 
in gin trash at Madison. Madison County, Fla. This county is west of the area 
in Florida where infestation was found in 1932, but where no pink bollworms 
have since been discovered. Intensive gin-trash inspections wen 1 carried on in 
Madison and adjacent counties throughout the remainder of the Beason without 
any additional specimens being found. After the discovery of the larvae in gin 
trash, a considerable amount of field inspection was done in an effort bo Locate 
the infested held, but without success. 
The measures taken to prevent the spread of the new infest at ions in Georgia and 
Florida included, in addition to the cotton-free 1 zone described, primarily the 
sion of the Federal quarantine to the infested areas, the heat treatment of 
91] ions of svc(\, and the compression of the lint produced in those areas, the 
disposal of gin trash, and clean-up of gins and oil mills after the close of the season's 
I ions. 
WILD COTTON IX BOUTHBRN FLORIDA 
The eradication of wild cotton in southern Florida i> being undertaken to 
elin inate a severe pink bollworm infestation which was discovered in 1932. The 
Cotton Belt <>f the Southeastern states can never he considered Bafe from in- 
festation so 1 ng as the insect persists in the wild plants on the keys and along 
the coast. 
Because of climatic conditions this eradication work can he carried on onlj 
in the tall, winter, and earl^ spring. The work this past Beason was begun about 
the first of November, and especially good progress lias been made. .Ml of the 
areas previously cleaned were recleaned, and in addition an original clean-up was 
