Spraying Experiments in Nebraska 
65 
EXPERIMENTS IN 1913 
In addition to the data on this subject given in connection 
with scab and blotch control, data were taken as to the effect of 
Bordeaux and lime sulphur on insects and diseases in general as 
well as to the amount of sound, clean fruit resulting from the use 
of either material. In making Bordeaux, the orthodox method of 
mixing was followed, i. e., the diluted lime and copper sulphate 
were poured simultaneously into a mixing tank or into the spray 
tank. A high grade of lime was used and all coarse material, 
grit, etc., removed by straining. 
Table 40 — Spray schedule 
Date 
April 25 
May 5 
May 22 
July 2 
Spray 
Cluster-bud 
Petal-fall 
3 -weeks 
Second-brood 
LS-Pb 
Bx-Pb 
Bx-Pb 
Bx-Pb 
Plat 1 
1.5-2-50 
3-4-2-50 
3-4-2-50 
3-4-2-50 
LS-Pb 
LS-Pb 
Bx-Pb 
Bx-Pb 
2 
1.5-2-50 
1.5-2-50 
3-4-2-50 
3-4-2-50 
LS-Pb 
LS-Pb 
LS-Pb 
Bx-Pb 
3 
1.5-2-50 
1.5-2-50 
1.5-2-50 
3-4-2-50 
Bx-Pb 
LS-Pb 
LS-Pb 
Bx-Pb 
4 
3-4-2-50 
1.5-2-50 
1.5-2-50 
3-4-2-50 
Comparison of the effect of Bordeaux and lime sulphur 
Tabulations indicate percentages 
Variety 
Plat 
Codling 
moth 
Cur 
worms 
cuHo 
stings 
Scab 
Blotch 
Sooty 
blotch 
Spray 
injury 
Sound 
fruit 
Ben Davis 
Mo. Pippin 
1 
2 
3 
4 
check 
11.00 
10.74 
11.17 
11.07 
49.02 
.21 
.126 
.49 
.17 
.59 
.53 
.56 
.44 
.53 
9.71 
' !05 ' 
.03 
8.58 
.21 
.75 
19.44 
16.24 
25.01 
1.91 
2.63 
6.03 
7.52 
6.34 
86.80 
83.03 
78.54 
80.53 
12.21 
No rust was present on any of the trees. 
At Wymore (table 40), there was little or no evidence of any 
difference in the amount of insect infestation. Scab was equally 
well controlled by either fungicide. Bordeaux, however, showed 
decidedly more efficiency in controlling apple blotch, the differ- 
ence in efficiency being approximately 69 per cent. There was 
practically no difference in the amount of spray injury. The 
lack of Bordeaux injury on the fruit is no doubt due to the fact 
that dry weather followed the applications. Bordeaux injury 
to the foliage was quite noticeable. This was also true of lime 
sulphur injury. The higher percentage of sound fruit, i. e., fruit 
free from any insect or fungous injury or spray russet, in plats 1 
