6 hours at 15° C. Fumigation would not be effective at lower tem- 
peratures. At 13° the time could be reduced to 4 hours, but no 
harm was done to the plants by fumigating for 6 hours. All stages 
except the eggs were killed in 6 hours with. 0.75 percent at 18°. 
Atmospheric humidity did not affect S-gas, which acted perfectly 
in fully saturated air. No injury to the plants occurred, even 
with a strength of 2.4 percent. 
"HLMOT, R. J. (141) 
Fumigation of horticultural products. Fla. Agr. Expt. Sta, Ann. 
Rpt. 1938: 106, 1939. 
It was found that the green pods of cowpea could be fumigated 
safely with methyl bromide, and that fumigation with half the 
basal dosage [.2.5 lbs. per 1,000 cu. ft. for 90 minutes] gave com- 
plete control of larvae and adults of the cowpea pod borer. It 
also controlled larvae of the tomato pinworm without injury to the 
plants. 
