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In Washington commercial rotenone dusts (0.5 to 1 percent of 
rotenone) and pyrethrum dusts (0.1 to 0.2 percent of pyrethrins) 
gave practically complete mortality of this pest on asparagus 3 
days after treatment. A dust of 10-peroent calcium arsenate in 
pyrophyllite was cheap and effective, but comparable results were 
given by dusts containing 0.5, 0.75, or 1 percent of rotenone.— 
Webster and Eiohraann (662 ). 
In Wisconsin a 0.1-percent rotenone dust was effective.-- 
Wilson and Janes (689 ). 
In order to conserve the supply of rotenone it was recommend- 
ed that a 0.75-percent rotenone dust be substituted for the 1-percent 
dust used for the control of asparagus beetles.— U. S. Bureau of 
Entomology and Plant Quarantine (62o) . 
One of the more important uses of rotenone is to control the 
asparagus beetle.— Howard and coworkers (294, p. 31) • 
There is no adequate substitute for rotenone in the control of 
the asparagus beetle. Arsenicals are unsatisfactory on edible shoots 
because of the residue hazard.— U. S. Department of Agriculture (633) . 
Diabrotlca duodecimpunctata (F.), the spotted cucumber beetle, southern 
corn rootworra 
Rotenone was recommended against this species in North Carolina 
in 1943.— Maxwell (407). 
Diabrotica undecimpunctata Mann, ("soror Lee), the western spotted 
cucumber beetle 
In California a dust containing 0.5 percent of rotenone and 2 
percent of Lethane in talo gave inconclusive results, chiefly because 
many of the beetles flew from the fruit trees as soon as the dust was 
applied.— Miohelbacher and ooworkers (417) • 
The western spotted cucumber beetle can be destroyed with a 1- 
percent rotenone dust.— Rockwood and Chamberlin (510) . 
Diabrotioa spp., cucumber beetles 
In Louisiana a 1-percent rotenone dust did not give so effioient 
control as did cryolite.— Floyd and ooworkers (189 ) • 
In California derris was applied by airplane xo curcurbit plants, 
with considerable success.— Lookwood (370). 
