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In 3-year trials in Wisconsin it was possible to control both 
the cabbage worm and the cabbage aphid with a mixture containing 
rotenone (0.76 percent) nicotine (2.5 percent), and sulfur (20 per- 
cent). Derris was superior to lead arsenate for oontrol of the im- 
ported cabbage worm and diamondback moth, but the arsanicals were 
better for control of the cabbage looper.— [All«i] (15); Wisconsin 
Agricultural Experiment Station ( 695) • 
In Alabama Derris and Tephrosia were more effective than 
Lonchocarpua of the same guaranteed rotenone content against a mixed 
infestation of cabbage worms in the field.— Arant (26). 
A survey of various commercial cabbage fields in South Carolina, 
in which several insecticides, inoluding derris and cube dusts, were 
used, showed that there was need for more adequate control measures. 
— Bare (34) • 
A derris-nicotine dust with sulfur and hydrated lime added as 
diluents gave excellent control of cabbage worms, as well as fair re- 
sults against the pea aphid.— Brooks and Allen (91). 
In Ohio in 1938 the greatest yield of cabbage was obtained by 
treatment with a mixture of 1 pound of derris dust (4 percent of rote- 
none) and 7 pounds of talc— Gui (246) . 
The more important uses of rotenone include the control of cab- 
bage caterpillars.— Howard and coworkers (294) . 
Rotenone dusts in 1939 on Long Island were almost replaced on 
a commercial scale by pyrethrum dusts. The former were not effective 
against the older larvae of the cabbage looper on cruciferous crops. 
— Huckett (295) . 
In Michigan cabbage worms are controlled with arsenical sprays 
and dusts, and by rotenone (derris), or with pyrethrum dusts and 
sprays. The diamondback moth is controlled with derris or pyrethrum. 
— Hutson (303 ). 
The standard recommendations in New York in 1942 for cabbage 
insects— cabbage aphid and the three speoies of cabbage caterpillars- 
included a 0.75 to 1-percent rotenone dust or a spray containing 4 
pounds of derris or cube powder (4 to 6 percent of rotenone) •— 
Parrott (457) . 
A 0.5-percent rotenone dust was recommended in North Carolina 
in 1943 against cabbage worms on cabbage after the head is half 
gr own • — Uaxwe 1 1 ( 407 ) • 
