BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE 
85 
products originating in the pink bollworm quarantined areas before 
they were allowed to be moved to noninfested areas prevented the 
spread of the pink bollworm by carriage in such products. 
VEHICULAR INSPECTION TO PREVENT SPREAD OE^ THE PINK BOLLWORM 
To determine whether the quarantine is being violated, vehicles 
on highways leading out of the regulated areas must be inspected. 
Another object of this inspection is to prevent the movement of 
small lots of seed cotton by transient cotton pickers leaving the 
regulated areas to go into noninfested regions to pick cotton. The 
fact that hundreds of lots of seed cotton were removed from cotton- 
pick sacks during such inspection is believed to show its primary 
importance in preventing the spread of the pink bollworm. 
INSPECTION FOR THE PINK BOLLWORM IN REGULATED AREAS 
Gin-trash inspection in the 1939 cotton crop in the lower Rio 
Grande Valley indicated that the pink bollworm infestation had 
built up to a considerable extent, particularly in the area near 
Brownsville in Cameron County. There was a noticeable increase 
in the number of pink bollworms found in Hidalgo County as well, 
but infestation in the Coastal Bend counties of Texas in the vicinity 
of Corpus Christi had not increased to any considerable extent over 
that in 1938. Gin-trash inspection in the 1939 cotton crop in the 
irrigated valleys of western Texas, New Mexico, and Arizona indi- 
cated that the infestation, as a rule, was much lighter in those areas 
than in 1938, and this appeared to be directly attributable to the 
tremendous decrease in infestation in the Big Bend area of Texas 
and Mexico. Infestation in the southern plains of Texas was lighter 
in the 1939 crop than in that of 1938. As a result of the finding of 
pink bollworms in the 1939 crop, the counties of Dimmit, Duval, Frio, 
Jim Hogg, La Salle, Maverick. Webb, Zapata, and Zazala in southern 
Texas were added to the regulated area and the counties of Tom 
Green, Concho, and Mitchell in west-central Texas were also added 
to the quarantined area because of spread of infestation into those 
areas. A summary of the amount and results of the various types 
of inspection in the regulated areas, including those counties added 
to the area in 1939, is shown in table 9. 
Table 9. — Summary of inspection* for the pint: boll (form in regulated areas, crop 
season of 1939 
State 
Gin trash 
Field 
Laboratory 1 
Quantity 
Pink boll- 
worms 
Man -days 
Pink boll- 
worms 
Green boll 
samples 
Pink boll- 
worms 
Arizona. 
New Mexico 
Texas 
Total _. 
Bushels 
38, '245 
798 
47. 838 
Number 
94 
1,048 
19, 051 
Number 



Number 



Number 


92 
Number 


692 
86. 881 
20. 193 


92 
692 
1 Laboratory inspection covers bolls collected from the 1938 crop. 
