Table 3.--Mortality of test insects in type C (closed) tobacco warehouses 
treated with DDVP solution sprinkled in the aisles 
: : Mortality-- :  Mortality-—- 
: Exposure period : exposed in free : inserted in to- 
Amount of DDVP 8 g air space bacco hogsheads 
applied s Started : 3 F 3 3 
: after ;: Length : Adults : Eggs : Adults : Larvae 
streatment: 3 8 : : 
: Hours Hours Percent Percent Percent Percent 
1 gram per 1,000 : 
cubic feet... 3 25 1 hi il 
: 2 59 a 
: h 19 3 
Me ey h 82 ab 
: 28 20 99+ = 
3 
2 grams per 1,000 : 
cubic feet . . » ? 0 2h h 
3 L8 3 
$ 2k i 63 at 
: 2 83 3 
: h 93 3 
ceo? mn 75 2 
: 28 20 100 = 
10 grams per 1,000 : 
cubic feet . . « 3 0 2k 15 16 
3 h8 10 32 
Controls :  o<- -- nf 3 8 9 
2 
=a Ore 
