-42- 
One of the more important uses of rotenone is to control cu- 
cumber beetles*— Howard and coworkers (294 , p. 31), 
Rotenone and copper-rot enone are considered fair for cuoumber 
beetles in victory gardens.— Reed \_£96) • 
Pyrerthrum can be substituted for rotenone to control cucumber 
beetles*— Turner and Horsfall (606 ) . 
Rotenone was recommended against cucumber beetles an beans, 
cantaloupes, cucumbers, and squashes in victory gardens in 1944«— 
White and Doolittle (683)* 
Diabrotioa vittata (F«), the striped cucumber beet]$ 
A derris dust containing 0#6 percent of rotenone is recommend- 
ed over other treatments, for it serves not only as a repellent but 
as a stomach and contact poison as well*— Beard (39). 
In Massachusetts a spray of 4 pounds of wettable cube powder 
(3.65 percent of rotenone) in 100 gallons of water reduced the 
beetles 90 percent, 8nd a cube-clay dust (0.6 percent of rotenone) 
reduced them 85 percent.— Bourne and Whitcomb (73). 
In Wisconsin a derris dust (0.6 percent of rotenone) was the 
most effective insecticide in controlling the striped cucumber 
beetle. Fluosilicates, arsenicals, and nicotine dusts were less 
effective in -the order named.— Brooks and Allen (92). 
A combination of insoluble copper, lAieat flour, and pyrophyllite, 
in which rotenone was the active ingredient, gave some promise. The 
use of a fungicidal and insecticidal combination dust is desirable 
in Maine.— Hawkins (272) • 
Rotenone dusts and derris sprays were effective in New York.— 
Hervey (279) . 
When calcium arsenate and rotenone were used separately, each 
brought about a marked increase in yield of cucumbers.— Parrot t (457 ) . 
Derris dusts (0.5 to 0.75 percent of rotenone) were the most 
effective insecticide tested against this pest in Mississippi .--Lyle 
(372). 
In all tests the mortality following use of 0.25 percent of rote- 
none with pyrophyllite was higher than from 2 percent of rotenone 
with fibrous talc or day. In regard to flaky talc and slate dust, 
