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Pyrophyllite diets containing 5 percent of DDT or 5 percent of DOT 
plus 5 percent of yellow copper oxide completely failed to control the 
melon aphid in commercial plantings of melons*— Granovsky (187). 
Aphis pomi Deg,, the apple aphid 
Gesarol AK-20 spray, 2 pounds with 6 2/3 pounds of wettable sulfur 
per 100 gallons of water, appeared to prevent heavy buildup of epnid 
populations on Red Delioious apples in New Hampshire during the 1944 
season* Five applications were no better than three, and the Gesarol 
acted slowly.— Conklin (116 ) • 
See Bnpoasea maligna •—» Granovsky ( 187) • 
Aphis 8piraecola Patch, the spirea aphid 
Gesarol A-3 Dust (3 percent DDT) was applied to Vanhoutte 3pirea 
fairly heavily infested with aphids, and after 5 days there was little 
apparent control. One application of a nicotine dust eliminated the 
infestation within a few hours*— Ross (306) . 
Cylindrical wire cages were placed over sprigs of spirea infested 
with aphids and placed in bottles of water. The insides of the cages, 
the foliage p and the paper toweling on which the cages rested were spray- 
ed with Gesarol A-20, 0.8 pound in 100 gallons of water. The aphids 
were apparently uninjured by the DDT.— Fluke and Pond ( 157 ) • 
Bre v icoryne brassicae (L«), the cabbage aphid 
A higner population occurred in the plots treated with a dust con- 
taining 3 percent of DDT or with a spray of 2 pounds of Gesarol AK-20 
per 100 gallons of water. At the time of harvest, parasites and predators 
appeared prevalent in all the plots, and it may be that aphid abundance 
in the DDT plots was due in part to possible migration of aphids caused 
by the more succulent and vigorous growing DDT-treated plants. --Allen 
and Brunn (71). 
See Trichoplusia nl «— S. J. Agr» Rxpt. Sta* (275 ) . 
Late cabbage and broccoli were treated with a 3-percent DDT dust 
and a 20-percent DDT spray. Lioe colonies were present on four plants 
in the DDT-treated plots, and on 2 in th6 dust- treated plots; there 
were none on the check.— Gould (184 ) • 
Chroroaphis juglandicola (Kltb.), the walnut aphid 
DOT was observed to kill the walnut aphid -when it was 
being used against the codling moth on walnuts at Linden, Calif. It al- 
so killed the predators and probably the parasites. Eventually, however. 
