dy 
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Petroleum oil should be used in sprays containing nicotine 
sulphate to control the codling moth ( Carpocapsa norannella ) . The 
oil-nicotine sulphate spray is recommended for use after July 25. 
PETTEY, F. tf. (1649) 
1930. NST7 METHODS FOR THE CONTROL OF CODLING MOTH. EXPERIMENTS 
CARRIED OUT DURING 1930. So. Africa Dept. Agr. Bull. 90, 10pp., 
illus. [Abstract in Rev. Appl. Ent. (A) 19: 59-60. 1931.] 
The addition of nicotine sulphate (1:1,200) to any of the oil- 
ar senate cover sprays will control the wooly aphid ( Eriosoma lanigerum 
Hausm.) if the sprays are thoroughly applied, When desirable for con- 
trolling other pests on pears or apples, 1 percent medium oil and nico- 
tine sulphate 1 to 800 or 1 to 1,200 may bo used with advantage as a 
substitute for one or two of the lead arsenate sprays; more than two appli- 
cations are not recommended on account of expense. 
REGAN, 7. S. (1650) 
1930. RESUL n G OP INSECTICIDE TESTS FOR THE CONTROL OP CODLING MOTH AMD 
OBSERVATIONS ON CODLING MOTH ACTIVITY DURING THE SEASON OP 1929 IN THE 
YAKIMA VALLEY, WASHINGTON. 16 pp. Calif. Spray Chemical Co., 
Berkeley, Calif. [Abstract in Biol. Abs. 5 (10): 2391. Entry 
24,221. 1931.] 
Orchard experiments showed greatly improved control of codling 
moth ( Carpocapsa nomonella ) under Northwest conditions by the combina- 
tion of arsenate of lead with summer oil. The possibility of good 
results with reduction of the arsenical dosage in this combination is 
shown, as well as the substitution of a combination of nicotine sulphate 
and oil for lead arsenate. 
ROBINSON, R. H., FISHER, D. P., and SPULER, A. (1651) 
1930. THE WESTERN COOPERATIVE OIL SPRAY PROJECT (1929). Science 71 
(1843): 440-441. 
The use of oil sprays late in the summer was found to complicate 
seriously the problem of spray-residue removal. Where not more than 
two applications of oil spray are made in combination with lead arsenate 
for the first brood of codling moth or where the nicotine-oil combina- 
tion without lead arsenate is used for the second brood, the arsenical 
residue problem has not been seriously complicated. 
SPULER, A., and DEAN, F. ?. (1652) 
1930. NEW COMBINATION SPRAYS FOR CODLING MOTH CONTROL. Jour. Econ. 
Ent. 23: 53-61, illus. [Abstract in Rev. Appl. Ent. (A) 18: 387. 
1930.] 
Nicotine-oil combinations have proved as effective as lead 
arsenate when applied as cover sprays for the first brood, and 
