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The addition of nicotine sulphate to lead arsenate sprays 
against the eggs of C. -oomonella appears to he uneconomical unless 
it serves to control other pests as well. 
FOWLER, R. (1618) 
1927. FURTHER INVESTIGATIONS INTO CODLING .MOTH CONTROL. SECOND 
REPORT ON EXPERIMENTS CARRIED OUT AT BLACKWOOD EXPERIMENT ORCHARD. 
Jour. Dept. Agr. So. Aust. 31 (5): 480-492. [Abstract in Rev. 
Appl. Ent. (A) 16: .285-286. 1928.] • 
The spray that gave the "best' results consisted of 2 lb. lead 
arsenate to 50 gal. water. The addition of lime-sulphur or 40-percent 
nicotine sulphate did not improve the efficacy of the sprays to any 
appreciable extent. 
HOWARD, L. 0. . (1619) 
1927. REPORT OF THE ENTOMOLOGIST. U. S. Dept. Agr. Bur. Ent. Ann. 
Rept. 29 pp. [Abstract in Rev. Appl. Ent. (A) 17: 272-275. 1929.] 
Nicotine sulphate (1:800) used in three cover sprays following a 
calyx and first cover spray of lead arsenate, gave very satisfactory 
results against the codling moth. 
ANONYMOUS • (1620) 
1928. REPORT OF THE DIVISION OF ENTOMOLOGY OF THE WASHINGTON STATION. 
Trash. Col. Agr. Expt. Sta. Bull. 229, pp. 27-29. [Abstract in 
Expt. Sta. Rec. 60: 842-343. 1929.] 
Excellent results were obtained with 2 percent nicotine dusts, 
but the high cost of some of these treatments prevents their use except 
for checking the influx of potato flea beetles at the edges of potato 
fields early in the season. 
In the 1927 experiments with the codling moth, it was found that 
nicotine sulphate (1:600) could be used as a substitute for lead arsenate 
in the second and third cover sprays, although this combination was 
somewhat less effective. The indications arc to the effect that some 
combination of nicotine sulphate may be of value in reducing arsenical 
re ;;idue and still serve to keep the codling moth well in check. 
U. , • (1621) 
1928. INSECT PESTS IN IDAHO IN. 1927. Idaho Agr. Expt. Sta. Bull. 160, 
pp. 21-23. [Abstract in Rev. Appl. Ent. (A) 17: 316. 1929.] 
Nicotine in combination with soap was much less effective than 
in combination- with l/2 percent oil emulsion in controlling the codling 
moth ( Cydia pomonella L. ) . 
