-108- 
at the rate of 4 pounds to 100 gallons of carrier (20 percent ethanol) • 
T 
Compound 
Formula 
Percent of 
Apple Plugs 
Wormy : Stung 
2,2-Bis(p-ohlorophenyl)-l,l,l« 
triohToro ethane (DDT) 
2,2-Bi8(p-bromophenyl)-l, 1,1- 
tr i ohToro ethane 
2, 2-Di-j>-anisyl-l, 1, 1- 
tri oh lor o ethane 
2 , 2-Di-p-t olyl-1, 1, 1- 
triohloro ethane 
2 , 2-B i s (ja-ac etoxyph eny 1 ) - 1, 1 1 
1-trichl oro ethane 
2,2-Diphenyl-l,l, 1-trichloro- 
ethan© 
2,2-Bis(D-chlorophenyl)-l,l- 
dichloroethylene 
2,2-Bis(j>-bromophenyl)-l,l- 
dichloroethylene 
Lead arsenate 
Check (no treatment) 
(C 6 H 4 C1) 2 CHCC1 3 
(C 6 H 4 Br) 2 CHCCl 3 23 
(C 6 H40CH3) 2 CHCCl3 3 
(CgB^CHj^CHCClj 7 
(CEsCCOCgH^CHCC^ 99 
(C 6 H 5 ) 2 CHCCl3 47 
(C 6 H 4 C1) 2 C:CC1 2 85 
(C 6 H 4 Br) 2 C»CCl 2 86 
40 
95 
17 
4 
7 

Siegler and Gertler (316)* 
Grapholitha moles ta (Busok), the oriental fruit moth 
Injury to peaches was reduced considerably in field plots sprayed 
with IDT, 1 pound per 100 gallons. Two applications, one eaoh ju3t be- 
fore the appearance of second- «nd third-brood larrae, were more effec- 
tive than one application made prior to appearance of the second brood. 
The H)T sprays reduced the aotivity of the parasite Maorocentrue ancylivorus 
Roh. t but did not eliminate it. At Moorestown, N. J», DDf sprays were 
much more toxic to the adults of the parasite than of the fruit moth, and 
the residues were toxic to them for a much longer period.— Baker and Porter 
tnt\ 
