Cage Test With Pink Bollworm 
Cotton infested with the pink bollworm (Pectinophora gossypiella 
(Saund.)) was grown in a screened cage partitioned into two sections 
40x60 feet each. An insect-collecting trap with four 15-watt black- 
light fluorescent lamps was operated in one section, and the other 
section was used as a check. Examination of early blooms immedi- 
ately before operation of the trap was begun showed a low initial infes- 
tation from winter carry-over. Therefore, it was deemed advisable to 
introduce additional pink bollworm moths into the cage. A total of 53 
male and 73 female moths were released in each section on April 19-20. 
The light trap was operated continuously from April 19 until the end of 
the experiment on July 15. 
All the trap collections were examined daily and the numbers of 
pink bollworm moths recorded. After the first bolls became approxi- 
mately 30 days old, 50-boll samples from the respective sections were 
examined about once a week. Green bolls became scarce during the 
last 2 weeks of the experiment. 
The trap-collection and infestation records are shown in table 4. 
There was practically no difference in rate of buildup between the light- 
trap and check sections of the cage as the season advanced, and the per- 
cent of infested bolls reached 100 in both sections during the same week. 
This lack of any material reduction in infestation despite the large 
number of moths caught indicates that moths deposit eggs before being 
trapped. 
Summary 
Light traps of the electric-grid type with two 15-watt black-light 
fluorescent lamps were used by growers for insect control on cotton, 
corn, broccoli, brussels sprouts, cabbage, and lettuce at Batesville, 
Tex., in 1955. There were 142 traps operated on five adjacent farms 
comprising approximately 3,000 acres. Infestation counts in repre- 
sentative fields of the trap area and in the check fields outside of the 
area showed that these traps were of no benefit in control of the boll- 
worm (Heliothis zea (Boddie)), the pink bollworm (Pectinophora gossypiella 
(Saund)), and the cabbage looper (Trichoplusia ni (Hbn.)). Other insects 
were of minor importance. Counts of bollworms and pink bollworms 
100, 450, and 800 feet from traps showed that the infestations did not 
vary appreciably with the distance from the traps. 
At Brownsville, Tex., cotton infested with the pink bollworm was 
grown in a screened cage partitioned into two sections 40x 60 feet 
each, and an insect-collecting type trap with four 15-watt black-light 
lamps was operated in one section while the other was used as a check. 
Although the trap caught a large number of pink bollworm moths during 
