250 NEBRASKA STATE HORTICULTURAL SOCIETY. 



pump, two leads of hose 30 to 40 feet long, two extension rods 

 8 to 10 feet long, a nozzle for each lead of hose, and a 50-gal- 

 lon vinegar or kerosene barrel. Brass working parts and fit- 

 tings are essential to all pumps. All other parts that come in 

 contact with the spray mixtures, if iron, -should be galvanized, 

 as iron is corroded by the spray mixtures. Such pumps with 

 the necessary attachments are sold at from $15 to |25, ac- 

 cording to the size and make, and may be obtained from any 

 of the leading dealers. 



The best gasoline power outfits are to be preferred for large 

 commercial orchards. Spraying on a large scale may be done 

 much cheaper and more timely with a power outfit than with 

 hand pumps. Power outfit's can be bought for from |200 to 

 1300. 



PREPARING BORDEAUX MIXTURE. 



Bordeaux is made by combining a solution of bluestone and 

 of lime, each properly diluted. Mixtures of varying strengths, 

 depending on the trees and plants to be sprayed and the stage 

 of development of buds, leaves, and fruit, are used. 



A standard formula for Bordeaux is : 



Bluestone (sulphate of copper) 4 pounds 



Unslaked lime 4 pounds 



Water 50 gallons 



Where only a small amount of Bordeaux is needed the blue- 

 stone may be dissolved in warm water and enough water 

 added to make 25 gallons ; and the lime slaked in a separate 

 vessel and diluted to 25 gallons. The two solutions should 

 then be combined by running a stream of equal volume from 

 each into a separate vessel, or by dipping with pails from 

 each solution and pouring both into the third vessel at the 

 same time. 



When a considerable amount of Bordeaux is needed it is 

 well to make up stock solutions of bluestone and lime, which 

 will keep indefinitely if kept covered, to prevent evaporation 



