10 BULLETIN 837, U. S. DEPARTMENT OF AGRICULTURE. 
SPRAYING EXPERIMENTS IN 1917. 
Table II. — Vineyards used for spraying experiments in northern Ohio, 1911. 
Vineyard owner 
and location. 
Varieties. 
Dates of spray applica- 
tions. 
Esti- 
mated 
infes- 
tation 
1916. 
Con- 
trol 
of 
grape- 
berry 
moth 
in 
1916. 
Gallons of spray 
material per acre. 
Vine- 
yard 
No. 
First. 
Second. 
Third. 
Spray applications. 
First. 
Sec- 
ond. 
Third. 
1 
Becker Wine Co., 
Kellys Island. 
O.W. Brown, Kel- 
leys Island. 
Paul Cooley, Do- 
ver Center. 
Fred Foye, Put-in- 
Bay. 
George Lewis, Bay 
Milage. 
John Schonhart, 
Venice. 
T. W. Wearsch, 
Avon Lake. 
Catawbas . 
....do 
Concords . . 
Catawbas . 
Concords, 
Ives. 
Catawbas, 
Concords. 
Concords, 
Ives. 
July 14 
July 12 
July 12, 
13. 
July 11, 
12. 
July 5-9 
July 3, 4 
July 10 
Aug. 3, 4 
Aug. 2 
July 26 
July 31, 
Aug. 1. 
July 23- 
26. 
July 20- 
25. 
July 27 
Perct. 
25 
50 
40 
90 
40 
20 
90 
0) 
( 2 ) 
( 3 ) 
( 3 ) 
( 3 ) 
(<) 
( 3 ) 
150 
165 
250 
150 
200 
150 
120 
193 
178 
300 
233 
275 
312 
100 
2 
3 
4 
Aug. 18 
300 
5 
6 
7 
Aug. 17 
Aug. 14 
Aug. 17 
200 
280 
160 
1 One spray with trailers. 
2 Two sprays with trailers but operators riding. 
3 No spray. 
< Two sprays with trailers. 
As seen in Table II the experiments were conducted in seven vine- 
yards, four in the Sandusky and island sections and three in the 
Dover and Avon sections just west of Cleveland, Ohio. The ex- 
periments were so placed as to include local variations in the dif- 
ferent grape sections, such as weather, cultural practices, varieties, 
and markets. All the arsenicals were applied in Bordeaux 2-3-50 
with resin fish-oil soap added at the rate of 1 pound to 50 gallons. 
The following single exception was made : In vineyard No. 5 copper 
sulphate was omitted from the third spray application and laundry 
soap, 2 pounds to 50 gallons, was substituted for resin fish-oil soap. 
SPRAYING EXPERIMENTS IN 1918. 
Table III. — Vineyards used for spraying experiments, in Northern Ohio, 1918. 
Vineyard owner 
and location. 
Varieties. 
Date sof spray applica- 
tions. 
Esti- 
mated 
infes- 
tation 
1917. 
Con- 
trol 
of 
grape- 
berry 
Gallons of spray 
material per acre. 
Vine- 
yard 
No. 
First. 
Second. 
Third. 
Spray applications. 
in 
1917. 
First. 
Sec- 
ond. 
Third. 
1 
2 
CD. Powell, Ver- 
milion. 
O.W. Brown, Kel- 
levs Island. 
T. W. Wearsch, 
Avon Lake. 
Ernest Dunning, 
Avon Lake. 
V. Doller, l'ut-in- 
Bay. 
Ives 
Catawbas . 
Concords, 
Ives. 
Concords.. 
Catawbas . 
June 13, 
14. 
June 29 
June 14, 
15. 
June 19 
July 2-3 
July 9 
July 18 
July 11, 
12. 
July 16 
Omitted. 
Aug. 5 
Perct. 
15 
15 
2 
50 
75 
0) 
0) 
0) 
( 3 ) 
( 3 ) 
( 2 ) 
( 2 ) 
100 
200 
( 2 ) 
( 2 ) 
( 2 ) 
150 
342 
( 2 ) 
( 2 ) 
( 2 ) 
3 
4 
5 
Two sprays with trailers. 
2 No record. 
No spray. 
