- 330 - 
::i-::z?., z. j., and yothers, ::. .-.. (1558) 
1932. EXPERIMENTS T7ITH INSECTICIDES FOR CODLING-MOTH CONTROL. U. S. 
Dept. Agr. Tech. Bull. 281, 28pp., illus. [Abstract in Rev. Appl . 
Int. (A) 20: 367-368. 1932.] 
Nicotine sulphate was somewhat toxic to the eggs and larvae of 
the codling moth in warm weather, but by itself was of less value 
than lead arsenate. Of the materials tested to prevent too rapid 
volatilization of the nicotine, lubricating oil gave the best re- 
sults, and a very good control was obtained with a combination of 
nicotine sulphate (1:800 or 1:1,600) and 1 percent lubricating oil. 
This combination is of value when substituted for lead arsenate in 
one or more cover sprays. 
SPULIR, A., et al. (1569) 
1932. FACTORS INFLUENCING THE COST OF CODLING- MOTH CONTROL. 7ash. 
State Hort. Assoc. Proc. 27 (1931), pp. 31-43, illus. FACTORS LIMITING 
THE USE OF LEAD ARSENATE FOR CODLING MOTH CONTROL. Better Fruit 
26 (8): 5-7, illus. [Abstract in Rev. Appl. Ent. (A) 20: 277-278. 
1932.] 
Nicotine, when used alone, appears to be of little value against 
the codling moth. The use of mineral oil with nicotine sulphate or 
pyrethram increases the time the nicotine or pyrethrum remains on the 
fruit, and the spray combines both ovicidal and larvicidal properties 
and controls other pests such as aphids and mites. A spray of oil 
(1:100) combined with nicotine sulphate (1:1,600) proved as effective 
against the codling moth as lead arsenate when used in any or all of 
the cover sprays, and also controls other pests and avoids an excessive 
deposit of arsenical. 
STEARNS, L. A., HADSN, rj, H ., and MACCREARY, D. (1570) 
1932. RESULTS T7ITH SOME OF THE SPRAYS SUGGESTED RECENTLY FOR IMPROVED 
CODLING-MOTH CONTROL. Peninsula Hort. Soc. [Del.] Trans. 1932: 78-88. 
[Abstract in Chem. Abs. 28: 5379. 1934.] 
Substitution of nicotine t annate or Verdol for lead arsenate in 
the second and third-brood cover sprays did not give increased control 
of the codling moth on apples, but greatly reduced the arsenical residue 
on the fruit. 
T7EBSTER, R. L. (1671) 
1932. DIVISION OF ENTOMOLOGY. I7ash. Col. Agr. Expt. Sta. Bull. 275, 
pp. 31-34. 
The nicotine-oil combination, when used in the late cover sprays, 
has given excellent results for several years when directed especially 
against the codling moth. This treatment and that of lead arsenate are 
approximately equal in their efficiency. 
