SPRAYING IN NEBRASKA. 251 



of the water. These may be prepared in the following man- 

 ner : Place 30 or 40 pounds of bluestoue in a flour sack and 

 suspend, slightly below the surface of the water, in a barrel 

 containing as many gallons of water as pounds of bluestone 

 used. In another barrel place an efjual amount of water and 

 add as many pounds of unslaked lime as gallons of water are 

 used. Keep it Avell stirred while the lime is slaking. 



To make 50 gallons of Bordeaux of a 4-4-50 formula stir 

 the stock solutions thoroughly and take 4 gallons from each, 

 placing it in separate half-barrels. Add water to fill each 

 half-barrel and combine the two solutions by pouring them 

 simultaneously into a third barrel, which may be the "spray 

 barrel." When the mixture is placed in the "spray barrel" 

 or tank it should be strained through a flue screen to catch 

 all particles that might clog the nozzles. 



A handy strainer can be made by fitting a short piece (6 

 to 10 inches long) of one to two inch gaspipe in a hole bored 

 in the bottom of a large wooden pail. This pipe should be 

 fitted to one side of the center of the bottom and extend up 

 into the pail about an inch. Window screen folded to four 

 thicknesses should then be placed in the pail, the edges of the 

 screen extending upward against the wall of the pail on the 

 inside, leaving the screen concave in shape with the center 

 resting on the bottom of the pail. 



Bordeaux is not effective against insects, but is used 

 against plant diseases. Where a spray effective against both 

 diseases and insects is desired, as for apple orchards, a com- 

 bination spray is made by adding some form of arsenic to 

 Bordeaux. Arsenate of lead is found to be the most desirable 

 poison to use on apple trees. 



SPRAYING THE APPLE ORCHARD. 



The apple is by far the most important of the fruits grown 

 in Nebraska. It is also the fruit that is the most persistently 

 attacked by insects and fungous diseases, principally codling- 

 moth and "apple scab." For these reasons the suggestions 



