Spraying Experiments in Nebraska 
29 
For schedules Nos. 1, 2, and 3 (table 16) the efficiency was 
practically 100 per cent. For schedule No. 4 the efficiency was 
48 per cent. This difference, when considering the amount of 
infestation, could easily be due to individual variation. 
Table 17 — Wymore spray schedule 
Date 
April 23 
May 14 
June 10 
July 12 
Spray 
Cluster-bud 
Petal-fall 
3-weeks 
Second-brood 
Plat 1 

Pb-2-50 
Pb-2-50 
Pb-2-50 
Pb-2-50 
Curculio injury on windfalls and picked fruit 
Variety 
Plat 
Total fruit 
Curculio 
Per cent 
Ben Davis f 
1 
5,603 
2 
.03 
Mo. Pippin \ 
check 
4,063 
4 
.09 
At Wymore (table 17), there was practically no damage by 
curculio either on the sprayed plats or on the checks. Probably 
the fact that the orchard was thoroly sprayed and cultivated the 
year before would account in part for the light infestation. 
Table 18 — Seward spray schedule 
Date 
Spray 
April 30 
Cluster-bud 
May 20 
Petal-fall 
June 18 
3-weeks 
Plat 1 
Pb-2-50 
Pb-2-50 
Pb-2-50 
Curculio injury on windfalls and picked fruit 
Variety 
1 
1 Plat 
Total fruit 
Curculio 
Per cent 
Ben Davis f 
Winesap \ 
1 1 
1 check 
4,180 
1,982 
9 
41 
.21 
2.07 
The efficiency of the schedule at Seward (table 18) was ap- 
proximately 90 per cent. Here, as in the other orchards, the 
infestation was so light that there was very little damage even 
on the check trees. 
