- 573 - 
The addition of nicotine to the lead-arsenate and lime- sulphur 
spray gave good control of leafhoppers, hut one application of nicotine 
dust gave in most cases better control of aphids than three of nicotine 
spray. 
OGILVIE, L. . (.3397) 
1927. SOME BERMUDA APHIDES AND THEIR CONTROL. Bermuda Dept. Agr., Agr. 
Bull. 5 (5): 5-7. [Abstract in Rev. Appl. Ent . (A) 15: 525-536. 1927.] 
On ornamental plants nicotine dust or nicotine su.lphate sprays 
may be used for the control of aphids. 
SANBORN, C. E., BR077N, TJ. J., and BIEBERDCRP, G. A. (2393) 
1927. ENTOMOLOGY. Bien. Rept. Okla. Agr. Expt. Sta. 1924-1926, pp. 38-4. r 
[Abstract in Rev. Appl. Ent. (A) 15: 591-592. 1927.] 
Lusting with a mixture of 2 to 3 pt. nicotine sulphate and 
50 lb. hydrated lime uas an effective measure against aphids on cu- 
curbits. Nicotine dust vras also recommended against other aphids. 
WALLACE, H. P. (2399) 
1929. BOLL T7EEVIL AHD PLixNT LICE POISONING 170RK. Miss. Agr. Expt. Sta. 
Bull. 271, pp. 14-15. [Abstract in Rev. Appl. Ent. (A) 18: 708. 1930." 
Two dusts were used, one a mixture of 8 parts calcium arsenate an" 
1 part of a commercial mixture of nicotine sulxjhate and calcium arsenate, 
and the other a mixture of 2 parts calcium arsenate to 1 part tobacco 
dust. The use of the dust containing nicotine sulphate resulted in an 
increased yield of 355 lb. per aero over the untreated plots and of that 
containing tobacco dust 259 lb. Both forms of nicotine controlled aphid 
infestation. 
T7ATS0N, J. R. (2400) 
1929. REPORT OP THE DEPARTMENT OP ENTOMOLOGY. Pla. Agr. Expt. Sta. Rept, 
1927-28, pp. 42R-49R. [Abstract in Rev. Appl. Ent. (A) 18: 246-247. 
1950.] 
A proprietary insecticide that is apparently a pyrethrum compound 
gave much bettor results than the usual 3 percent nicotine sulphate and 
lime dust against aphids. 
HUCKETT, H. C (2401) 
1931. SPRAYING AND DUSTING EXPERIMENTS 171 TH POTATOES ON LGNG ISLAND. 
N. Y. (Geneva) Agr. Expt. Sta. Bull. 592, 38 pp., illus. [Abstract 
in Rev. Appl. Ent. (A) 19: 474-475. 1931.] 
Nicotine dust is the only reliable check to aphid infestation, 
but it is expensive and very uncertain in its effect on the actual yield 
of crop. 
