16 Nebraska Agricultural Exp. Station, Research Bui. 10 
At Lincoln the same capacity machine was used as at Nemaha. 
Mist nozzles were used for all applications. At the petal-fall spray 
a pressure of 250 pounds was maintained. The efficiency of the 
schedule for plat 1 was 68 per cent; for plat 2, 47 per cent; and for 
plat 3, slightly below 60 per cent. Forty per cent of the larvae found 
in the fruit entered at the calyx. 
The results of the first year's work on codling moth control 
indicate either (1) that the spraying was not thoroly done, (2) 
that the applications were not made at the right time, or (3) that 
the poison was not used in sufficient quantities. 
There is no doubt that the spraying was done at the right time 
at Lincoln, where the closest observations of codling moth develop- 
ment were made. 
That the poison was used in sufficient quantities is shown by 
the fact that the 2-50 formula, which was used in most cases, was 
as efficient as the 3-50 formula, as indicated in table 5. This will 
be discussed more fully under ''a comparison of different brands of 
arsenate of lead." 
It is evident that the spraying was not thoro. The fact that 
approximately 41 per cent of the larvae found in the fruit entered 
at the calyx would indicate that the poison was not present in 
sufficient quantity, from not having been forced into the calyx cups. 
This lack of thoroness was for the most part unavoidable. The 
trees at Nemaha were so high that it was impossible to spray the 
tops from above. At Florence and Lincoln the wind was so strong 
that it was impossible to spray from but one direction. At Brown- 
ville and Wymore the pressure maintained during the petal-fall 
spray was irregular, hand power pumps being used at these places. 
EXPERIMENTS IN 1914 
In the spring of 1914, 198 larvae were obtained. The moths 
began emerging May 25. Emergence reached its height about 
June 15. The first larvae were found June 5. The first pupae were 
taken June 25. By July 10 the summer brood of moths was begin- 
ning to emerge. Within ten days the second-brood larvae were at 
work. The first of August, third -brood pupae were found. Moths 
emerged about August 15, and the third-brood larvae were at work 
by August 20. ^ ^ ^ 
Observations in the field indicated that larvae were hatching in 
large numbers almost continually from the first of June until frost. 
The weather conditions for 1914 were abnormal from the first. 
Little rain fell thruout the season and fruit dropped badly. • Orchard 
insects multiplied very rapidly during the extremely hot, dry 
weather. This was especially true of the codling moth. This 
season practically a full third brood of larvae appeared. 
