: p; 
i 
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Field experiments show that nicotine sulphate (1:800) with soap, 
is fairly efficacious against the larvae of Cydia pomonclla , "but it is 
inferior in action to a spray of 1 lb. powdered lead arsenate to 50 gal. 
water. There is apparently no advantage in combining nicotine sulphate 
and lead arsenate against this pest. 
SEEABlfS, L. A., and HOUGH, VI. S. (1614) 
1923. SPREADER TESTS ON APPLES AND PEACHES. JourV Econ." Ent. 16: 198-201, 
[Abstract in Rev. Appl. Snt. (A) 11: 334/ 1923.]' 
Nicotine sulphate (40-percent) and a casein spreader were found 
to "be incompatible. 
KLEIN, J. (1615) 
1925. CONTROLLING CODLING MOTH IN T7ALNUTS. Calif. Cult. 64 (2.1): 
583,537, illus. [Abstract in Rev. Appl. Ent. (A) 14: 248. 1926.] 
Dusting and spraying have been used for the control of codling 
moth in walnuts with almost identical results. The spray consisted 
of 16 lb. lead arsenate, 1 pt. nicotine sulphate and 4 lb. spreader in 
400 gal., of water. It was pumped under 400 lb. pressure and an average 
of 27 gal. was used per tree. The damage in the sprayed areas ranged 
from 4.2 to 7.1 percent as compared with 12 to 22.2 percent in un- 
sprayed ones. 
GURNET, 17. B., and BRERETON, 17. LeG. (1516) 
1926. THE CONTROL OP T700LLY APHIS, I.ETHODS THAT ARE AVAILABLE. Agr. 
Gaz. N. S. Hales 37 (7): 545-551. [Abstract in Rev. Appl. Snt. (A) 
14: 550-551. 1926.] 
One grower reports great success in the last two years in con- 
trolling the woolly apple aphid ( Eriosoma lanigerum Hausm.) with an 
autumn spray of 2 lb. caustic soda, 3/4 pt. nicotine sulphate (40— percent) 
and 100 gal. water. TThen early fungicide treatments are necessary very 
good results have been obtained by combining winter strength lime-sulphur 
and tobacco wash or commercial nicotine extract applied when the buds were 
swelling. In Victoria a combination of 1 gal. oil and 1 pt. 40-percent 
nicotine sulphate to 80 gal. water gave great success as a winter spray 
against E. lanigerum . Tobacco wash prepared without soda and many of the 
commercial extracts may be safely combined with lead arsenate and can be 
used against both the woolly aphid and the codling moth ( Cydia pomonella 
L.) Nicotine sulphate (40-percent) is generally diluted to 1 pt. to 
100 gal. of water for E. lanigerum . The addition of miscible oil, using 
2, 3, or 5 pt. to 100 gal. tobacco spray, increases its efficiency. 
BOURNE, A. I., and TTHITCOI.IB, 7. D. (1517) 
1927. THE CODLING I.IOTH IN MASSACHUSETTS. Mass. Agr. Expt. Sta. Bull. 
233, pp. 55-72. [Abstract in Rev. Appl. Ent. (A) 15: 361. 1928.] 
