Spraying Experiments in Nebraska 
43 
Neither was there any appreciable difference in the amount of 
spray injury caused by the late sprays of either Bordeaux or 
Hme sulphur. Practically all the infection which occurred here 
must have taken place about the time of the petal-fall spray as 
it began to be noticeable on the check trees soon after the 10-days 
spray. 
Table 28 — Seward spray schedule 
Date 
Spray 
April 30 
Cluster-bud 
May 20 
Petal-fall 
June 18 
3-weeks 
July 20 
Second-brood 
Plat 1 
Bx-4-6-50 
LS-1.009 
LS-1.008 
LS-1.008 
LS-1.008 
LS-1.008 
Bx-3-4-50 
LS-1.008 
2 
Scab injury on windfalls and picked fruit 
Total 
Per cent 
Spray 
Per cent 
Variety 
Plat 
fruit 
Scab 
scab 
injury 
spray injury 
Ben Davis f 
1 
5,278 
128 
2.42 
85 
1.61 
Winesap j 
2 
4,180 
83 
1.99 
86 
2.06 
check 
1,982 
485 
24.47 
At Seward (table 28), the same conditions prevailed as at 
Beatrice. Here Bordeaux for the first spray showed a slightly 
higher efficiency than lime sulphur. 
The results of the year bear out those of 1913 in regard to the 
comparative efficiency of Bordeaux and lime sulphur. Bordeaux 
this year did Httle injury at any of the late sprayings, due to 
the excessively dry weather. 
In most instances, the petal-fall was the earliest spray that 
was necessary this year. 
EXPERIMENTS IN 1915 
Since no conclusive results were obtained in 1914, owing to 
weather conditions, the same plans were followed in 1915. This 
season was very favorable to the development of scab and there 
was a great deal of primary as well as secondary infection. As in 
1913, considerable infection occurred before the trees were in 
bloom. Quite a heavy secondary infection occurred from the 
latter part of July to the middle of August or perhaps considerably 
later. This secondary infection was heaviest near the check trees 
and in the vicinity of unsprayed orchards. In some cases more 
than 30 per cent of the fruit on well-sprayed trees in the vicinity 
of check trees was infected with small scab spots at packing time 
regardless of the fact that scarcely any of the windfalls from these 
