FUNGOUS DISEASES AND SPRAYING 57 



obtained at the drug store, in enough water to dissolve it will 

 serve for a large number of tests. 



A good outfit for making the mixture consists of two half- 

 barrels, a gallon, and a quart measure of copper, and wooden 

 pails. If the copper measures seem expensive, a pail marked 

 for gallons and a glass fruit jar marked for quarts may be 

 used. For filling the pump barrel, a wide-mouthed tunnel will 

 be a o;reat convenience ; this mav be of tin thouo;h better of 

 copper. 



Bordeaux DonVs. Don't use iron or tin vessels for mixing ; 

 don't use air slacked lime ; don't pour in the coarser particles 

 of lime ; don't make more than can be used the same day. 



Bordeaux mixture leaves a stain which persists for some 

 time ; this is objectionable where spraying is to be done near 

 the time of the gathering of fruit ( there is no danger of poison- 

 ing, the stains are simply unsightly). For such spraying the 

 following fungicide may be used. 



Copper Carbonate Solution. This is made according to the 

 followinof formula : 



o 



Copper carbonate . . 5 ounces. 



Strong ammonia . • 3 pints. 



Water to make . . 50 gallons. 



Put the copper carbonate in a pail with a quart of water, 

 mix thoroughly, then add slowly the ammonia diluted with 

 half a pailful of water, stirring constantly, then add to the 

 rest of the water. 



Application of Fungicides. Fungicides are applied to the 

 plant it is desired to protect most economically and effectually 

 in the form of a mist-like spray. To accomplish this success- 

 fully two things are necessary : a force pump with an air 

 chamber that will give a strong and continuous stream, and a 

 nozzle that will break up the liquid into a fine spray. 



Since the general adoption of spraying a great variety of 

 spray pumps have been put upon the market by different firms, 

 and there is no difficulty in obtaining a suitable one for any 

 kind of work. The following are the principal types : A small 

 pump attached or attachable to a pail or bucket is ver}' conve- 

 nient where only a small amount of spraying is to be done on 



