- 374 - 
The experiments conducted indicated that nicotine sulphate (1 to 
800 of soap solution) acts as a material check to the work of the cod- 
ling moth. TThen it and lead arsenate were used side by side, the 
former was as efficient as the latter in codling moth control and kept 
the trees from all sucking insects. Nicotine also acted as a material 
check to the spread of the San Jose scale. 
(1602) 
1916. NICOTINE SULPHATE AND ARSENATE OP LEAD EXPERIMENTS FOR CONTROLLING 
L'OTH. tfash. State Hort. Assoc. Proc. 12th Ann. Meeting 1915, pp. 91-97. 
From the data presented nicotine has either acted as a repellent 
to the' codling moth or the larvae refused to eat. The foliage of the 
trees sprayed with nicotine were a deeper green than is usual and were 
free from aphids and red spiders. Nicotine also eradicated nearly all 
the San Jose scale from tree D. From an economical standpoint it would 
he impracticable to use nicotine sulphate at the present prices, instead 
of lead arsenate, in controlling the codling moth. But, if the prices 
were reduced, the growers could then use it in controlling this insect 
and also to check the scale during the growing season. 
' (1603) 
1917. NICOTINE SULPHATE IN CODLING MOTH CONTROL. T7ash. State Hort. Assoc 
Proc. 13th Ann. Meeting 1917, pp. 111-121. 
The work during 1915 and 1916 indicates that nicotine sulphate 
acts as a material check to the work of the codling moth and to the 
spread of the San Jose scale. At the present prices of nicotine it would 
not he advisable to substitute nicotine sulphate for lead arsenate in 
controlling the codling moth alone, hut where aphids and sucking insects 
are to be controlled the omission of lead arsenate will result in con- 
siderable saving. T7hen nicotine sulphate and lead arsenate were used 
side by side, the former proved as efficient as the latter in controlling 
the codling moth and kept the trees free from all sucking insects. It 
was not necessary to use nicotine stronger than 1 to 800 for the codling 
moth and 1 to 1,024 gave nearly as good results. Soap should be used with 
it. 
EATON, J. S., and T7ATERBURY, K. E. (1604) 
1917. CODLING MOTH EXPERIMENTAL TC)RX IN ROSS ORCHARD. Yakima Co., T7ash., 
Dist. Hort. Insp. Ann. Rept . pp. 27-42. 
The results of DeSellem (1915) are reviewed. Their own results 
on nicotine sulphate do not corroborate those of DeSellem (pp. 29-30, 35, 
36). Their conclusions are not favorable to nicotine sulphate as a 
codling moth control where infestation is heavy. 
LOVETT, A. L. (1605) 
1917. NICOTINE SULPHATE AS A POISON FOR INSECTS. • Jour. Econ. Ent. 10: 
333-337. [Abstract in Chem. Abs. 11: 3369. 1917.] 
