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One pound of IDT (Gesarol AK-20) per 100 imperial gallons of water 
was 87 percent efficient against a very light infestation.— Ross (306) • 
Two sprays of 1/2 pound of IDT in 100 gallons plus a sulfur fungi- 
cide brought about 85 percent reduction of oriental fruit moths in blocks 
of Elberta and Hale Haven peaches.— Hut son (220 ) . 
Polychrosis viteana (Clem.), the grape berry moth 
In small-soale tests at Sandusky, Chio, 1*5 pounds of DOT (emulsified 
with bensene-keroaene) per 100 gallons did not kill the eggs on grape 
berries, but was about 50 percent effective 20 days after application 
against larvae trying to enter the berries. In one field test this 
treatment was more effective when used in three or four applications than 
lead arsenate in four applications, but in another field test, one appli- 
cation of DDT did not hold up so well as one application of lead arsenate. 
In a field test with DDT, 1 pound per 100 gallons, on Niagara grapes in 
New Jersey, 16.6 percent of the berries were injured in the DDT plot, and 
41*7 percent in the lead arsenate plot, but on Jersey Muscat grapes DDT 
was no more effective than the standard lead arsenate treatment .--Baker 
and Porter (j*l)« 
A DDT spray used against Popillia japonioa gave fair oontrol of this 
moth.— Hadley and Fleming (196 ). 
The efficiency of three spray sohedules as compared with an unsprayed 
check (efficiency lero) was as follows: Three sprays of lead arsenate 
and nicotine sulfate 75 percent, three sprays of lead arsenate and summer 
oil 81 percent, and one spray of lead arsenate with nicotine sulfate 
followed by two sprays of DDT, 1 pound per 100 imperial gallons, 73 per- 
cent.— Ross (306 ) . 
The grape berry moth was controlled by three sprays of DDT, 1 pound 
per 100 gallons.— Hutson (220 ). 
Laspeyresia caryana (Pitch) , the hickory shuckworm 
In preliminary tests DOT gave favorable results.— Baker and Porter 
(81). 
Melissopus latlferreanus (Wlsm.), the filbert worm 
In July DDT, Gesarol A-3 dust and A-20, 2 pounds in 100 gallons of 
spray, was applied with power maohines to 70 to 96 trees in three filbert 
orchards in the Willamette Valley at the rate of 65 pounds per acre— 
10 to 12 gallons per tree. Results were favorable, but slightly less 
effective than with lead arsenate. Infestation in nuts was slightly more 
in the DDT-treated orohards than in the lead arsenate check.— Thompson (346) 
