- 380 - 
The nicotine-oil combination has proved more efficient than 
lead arsenate alone the past two seasons in controlling the second 
"brood and simplifies the residue removal. It is a well-known fact 
that if too many lead-oil sprays are applied the removal of the 
spray residue is a serious question. 
The nicotine-oil combination if properly spaced in the codling 
moth program along with lead arsenate and lead-oil will control the 
codling moth larvae, orchard mites, aphids, leafhoppers, and summer 
crawlers of San Jose scale and will also simplify residue removal. 
FLINT, T. P. (1628) 
1929. ORCHARD INSECT CONTROL FOR 1928. 111. Hort. Soc. Trans. 1928, 
62: 97-109. [Abstract in Rev. Appl. Ent. (A) 1?: 387-388. 1929.] 
Experiments were carried out with oil sprays for the control of 
second and third brood larvae of the codling moth ( Cydia pomonella L.) 
Two sprays with a 2 percent white oil emulsion reduced the infestation 
to 1.1 percent and 0.7 percent respectively. Ihe same oil at 1 percent 
with nicotine sulphate (1:800) allowed an infestation of 0.3 percent. 
HERBERT, F. B., and LEONARD, i,I. D. (1629) 
1929. OBSERVATIONS ON THE OIL-NICOTINE COMBINATION EOR THE CONTROL OF 
THE CODLING MOTH AND OTHER APPLE INSECTS IN THE PACIFIC N0RTHT7EST. 
Jour. Econ. Ent. 22: 72-78. [Abstract in Rev. Appl. Ent. (A) 17: 
369-370. 1929.] 
A combination of oil and nicotine gives better results than 
those obtained with lead arsenate with or without oil in the control of 
Cydia (Carpocapsa) pomonella L. and the other more important pests of 
apple. Oil with. nicotine. usually gave commercial control of mites, 
San Jose scale ( Asmdiotus r^erniciosus Comst.), and the green aphid 
( Auhis pomi DeG. ) , and considerably reduced the numbers of woolly apple 
aphid ( Eriosoma lanifcerum Hausm.). 
LEVICK, G. T. (1630) 
1929. CONTROL OF THE CODLING MOTH (CYDIA POMONELLA LINN.) Jour. Dept. 
Agr. Victoria 27 (9): 533-542. [Abstract in Rev. Appl. Ent. (A) 18: 
107. 1930.] 
The addition of nicotine sulphate and lime-sulphur to lead 
arsenate did not increase its efficiency in controlling the codling moth 
TTith lead arsenate sprays alone, codling moth infestations amounted to 
22, 13, and 58 percent respectively in 1925-7, 1927-8, and 1928-9. 
McALISTER, I. C, JR. (1631) 
1929. PRELIMINARY REPORT OH CONTROL OF HIBERNATING CODLING MOTH LARVAE, 
Jour. Econ. Ent. 22: 424-425. [Abstract in Chcm . Abs. 23: 3534. 1929. 
