10 BULLETIN 837, U. S. DEPARTMENT OF AGRICULTURE. 



SPRAYING EXPERIMENTS IN 1917. 



Table II. — Vineyards used for spraying experiments in northern Ohio, 1917. 





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 

 Village. 



John Senonhart, 

 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. 

 Julv 20- 



25. 

 July 27 





Perct. 

 25 



50 



40 



90 



40 



20 



90 



C 1 ) 

 ( 2 ) 

 ( 3 ) 

 ( 3 ) 

 ( 3 ) 

 ( 4 ) 

 ( 3 ) 



150 

 165 

 250 

 150 

 200 

 150 

 120 



193 

 178 

 300 

 233 

 275 

 312 

 160 





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 

 moth 



in 

 1917. 



Gallons of spray 

 material per acre. 



Vine- 

 yard 

 No. 



First. 



Second. 



Third. 



Spray applications. 





First. 



Sec- 

 ond. 



Third. 



1 

 2 



CD. rowell, Ver- 

 milion. 

 O.W. Brown, Kel- 



levs Island. 

 T. "W. Wearsch, 



Avon Lake. 

 Ernest Dunning, 



Avon Lake. 

 V. Doller, Put-in- 



Bay. 



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) 



C 1 ) 



0) 



( 3 ) 

 ( 3 ) 



( 2 ) 



( 2 ) 



100 



200 



( 2 ) 



( 2 ) 



( 2 ) 



150 



342 



( 2 ) 



( 2 ) 

 ( 2 ) 



3 







4 







5 













1 Two sprays with trailers. 



2 No record. 



3 No spray. 



