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Polychrosis viteana (den. ), the grape berry moth 
At the annual codling moth conference held by the United States Depart- 
ment of Agriculture, Bureau of Entomology ( 451 ) at Washington, D. C., in 
1930, Runner reported tests of nonarsehicals for use on grapes at Sandusky, 
Ohio'. Three years' work with commercial derris extract in mixtures applied 
against the grape berry moth had not -shown any important gain in control. 
At a strength of 1:800 it did not seem to destroy the eggs nor have any 
decided effect in preventing damage from larvae. The same Bureau (453) in 
1931 reported that for the control of the grape berry moth several contact 
materials, including oil emulsions, nicotine sulfate, and derris and pyre- 
thrum extracts, as well as rotencne, have been tested against the, second 
brood of worms, with very disappointing results. The Bureau of Entomology 
and Plant Quarantine in 1935 (439) reported that derris-kaolin (rotenone 1 
percent) at 10 pounds per 100 gallons plus white oil, and derris (rotenone 
4- percent) at 2,5 pounds per 100 gallons plus' fish oil, reduced damage by 
the grape berry moth at Venice, Ohio, but caused such serious staining 
that the grapes were practically unsalable. 
Runner ( 359 ) in 1932 reported that pyrethrum extract, derris extract, 
nicotine sulfate, and nicotine tannate were tested against this insect un- 
der field conditions but without encouraging" results. Failures in control 
also characterized the use of rotenone, of oil sprays, and of oil in com- 
bination with nicotine. TfVhile most of the nonarsenical materials men- 
tioned showed decided toxic properties, they apparently either did not re- 
main highly toxic or were too easily washed from the grape clusters to 
afford protection over the long period needed for adequate control. 
R hopobota naevana (Hon.), the blackheaded fireworm 
. The Washington State Agricultural Experiment Station ( 475 ) in 1930 
reported the results of tests by Crowley with insecticides against cran- 
berry insects. Neoton, a derris derivative, was tried again but proved 
to be. no more effective then the less expensive pyrethrum sprays. Rote- 
none was tried against this fireworm at the rate of 3 ounces to 100 gal- 
lons., of water. It killed uhe larvae at this strength and also repelled 
chewing insects for several days after the. plants were sprayed with it. 
The Massachusetts Agricultural Experiment Station ( 270 ) in 1937 re- 
ported that a spray of 5 pounds of derris powder (4 percent rotenone) and 
4 pounds of fish-oil soap in 100 gallons of viator, 400 gal,, to an acre, 
killed 75 percent of the worms; 6 pounds of derris powder (4 percent rote- 
none) and 4 pounds of fish-oil soap in 100 gallons of water, 400 gallons 
to an acre, killed 85 percent; and 8 pounds of dorris (4 percent rotenone) 
and 3 pounds of fish-oil soap in 100 gallons of water, 400 gallons to an 
acre, killed 98 percent. Ttfhile this last spray was very effective, it was 
too costly to compoto as a treatment for this post; howevor, it has good 
long-range promise. 
