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Cage toxicity tests against the boll weevil and the leaf 
worm with derris, cube, and devil's shoestring. 
Materials and proportions 
(and percentage of rotenone) 
Derris-sulfur 40:60 (rotenone 1.56) 
Derris-sulfur 20:80 (rotenone .78) 
Derris-sulfur 10:90 (rotenone .39) 
Cube-sulfur 40:60 (rotenone 1.96) 
Cube-sulfur 20:80 (rotenone .98) 
Cube- sulfur 10:90 (rotenone .49) 
Devil's shoestring- sulfur 94:6 
(rotenone 1.6) 
Devil's shoestring-sulfur 47:53 
(rotenone .8) 
Devil's shoestring-sulfur 23.5:76.5 
(rotenone .4) 
Derris (rotenone 3.9, total 
extractives 11.6) 
Cube (rotenone 4.9, total 
extractives 17) 
Devil's shoestring (rotenone 1.7, 
total extractives 7.5) 
Calcium arsenate No. 2 
Checks 
Cube with pyrethrum and sulfur was tried against these insects 
and also Lygus pratensis with the following results: 
Cage toxicity tests against the boll weevil, the leaf worm, 
and Lygus pratensis with pyrethrum and pyrethrum mixtures 
Materials and proportions Percent mortality Percent control 
Boll Leaf Lygus Boll Leaf Lygus 
weevil worm pratensis weevil worm pratensis 
Nymphs Adults Nymphs Adults 
Pyre thrum-cube- sulfur 
10:10:80 
Pyrethrum- sulfur 
40:60 
Pyrethrum (.76$ total 
pyrethrins) 
Sulfur 
Checks 
Percent 
Percent 
mort< 
ality 
control 
Boll 
Leaf 
Boll 
Leaf 
reevil 
worm 
weevil 
worm 
49 
64 
40 
62 
39 
56 
27 
54 
28 
41 
14 
39 
53 
73 
45 
72 
39 
60 
28 
58 
21 
33 
6 
31 
37 
39 
25 
37 
38 
40 
26 
38 
31 
41 
18 
39 
72 
78 
67 
77 
83 
77 
80 
76 
37 
46 
26 
44 
77 
89 
73 
89 
16 
3 
34 
65 
79 
52 
9 
63 
71 
21 
36 
74 
74 
73 
12 
73 
63 
63 
37 
92 
90 
88 
14 
92 
86 
80 
70 
41 
58 
3 
27 
5 
29 
40 
