Spraying Experiments in Nebraska 
41 
The results here also indicate that, everything else being equal, 
the earlier in the season Bordeaux is used after the trees 
come into full bloom, the greater will be the danger of injury 
from spray bum. 
Table 26 — Lincoln spray schedule 
Date 
April 25 
May 9 
June 2 
July 15 
Spray 
Cluster-bud 
Petal-fall 
3-weeks 
Second-brcod 
Flat 1 
Bx-4-6-50 
LS-1 . 5-50 
LS-1 . 5-50 
Bx-3-4-50 
2 
Bx-4-6-59 
Bx-3-4-50 
Bx-3-4-50 
Bx-3-4-50 
3. . 
LS-1 . 5-50 
LS-1 . 5-50 
LS-1 . 5-50 
LS-1 . 5-50 
Scab injury on windfalls and picked fruit 
Total 
Per cent 
Spray 
Per cent 
Variety 
Plat 
fruit 
Scab 
scab 
injury 
spray injury 
Ben Davis 
1 
2,549 
2 
.07 
498 
19.54 
2 
1,884 
0 
.0 
580 
30.78 
Jonathan 
3 
1,428 
15 
1.05 
125 
8.75 
check 
3,530 
1,230 
34.85 
At Lincoln (table 26), the schedules for plats 1 and 2 gave 
approximately 100 per cent control. The complete lime sulphur 
schedule was 97 per cent efficient. Here again Bordeaux did con- 
siderable injury even where used only in July, but was especially 
injurious where used for the 3-weeks spray. The rainfall was 
certainly not more than normal at Lincoln in 1913, nor did it 
come at the most inopportune times, hence the weather cannot 
be largely to blame for the spray injury. These plats had been 
sprayed before but not cultivated. Lime sulphur injury was 
greater on the foliage than on the fruit. 
The results of the year's work indicate that a pre-petal-fall 
spray is often very necessary, depending upon weather condi- 
tions. Bordeaux seems to be more effective as a fungicide than 
lime sulphur, but when used for the petal-fall spray or soon after 
that time it russets the fruit so badly that its use is inadvisable. 
However, for the first application it proved more desirable than 
lime sulphur. 
EXPERIMENTS IN 1914 
The same general plan of spraying was followed as in 1913 
except that the dates of some of the sprays were shifted to cor- 
respond to the maturing and dissemination of the spores of the 
scab fungus. 
