EXPERIMENT STATION BULLETINS. 



357 



50 gallons of water. In a separate vessel slake 50 pounds of stone lime or 

 75 pounds of hydrated lime and add water to make 50 gallons. These stock 

 solutions will keep in good condition for several weeks if they are kept 

 covered to prevent evaporation of water, and will be sufficient to make 

 625 gallons of bordeaux mixture. 



It will require approximately 100 gallons of bordeaux mixture per acre for 

 each application. Growers should estimate the number of pounds of copper 

 sulphate and lime that they will require and should secure it early in the 

 season. 



Stir each of the stock solutions vigorously. Fill the spray tank (100 gallon 

 tank) half full of water. Pour into the spray tank 8 gallons of the lime solu- 

 tion and stir thoroughly. Add water until the tank is about three-fourths 

 full. Then add 8 gallons of the copper sulphate solution. Stir thoroughly 

 and add enough water to fill the tank. Never pcur together the strong stock 

 soluticns. 



Every effort should be made to keep splinters, dirt, etc., out of the spray 

 lank. Use a hardwood stirring stick and remove all loose splinters from 

 inside the stock solution barrels. All material put in the spraj^ tank should 

 be roured into it through a fine meshed sieve. 



Fig. 18. Results of spraying with bordeaux mixture. Yield from luisprayed plot 176 bu. per acre. 

 Yield from plot sprayed with bordeau.x 319 bu. per acre. Photo by K. K. Vining. 



