SPRAYING 255 



Barrel pumps are made in various sizes, and will carry from one 

 to four lines of hose. For small and moderate-sized orchards, not 

 over 10 acres, and for general spray work on the farm the barrel 

 outfit is satisfactory. It is also very satisfactory for spraying pota- 

 toes, if mounted on a two-wheel cart and an attachment added 

 behind so that four rows at a time may be sprayed by one man, 

 who both drives and pumps. A good barrel outfit, including pump, 

 barrel, hose, rod, and nozzles, can be bought for from $15.00 

 to $25.00. 



One of the most desirable spray outfits for moderate commercial 

 operations — for instance, an orchard of from 10 to 20 acres — 

 is the large-sized hand pump. Most of these are horizontal, two- 

 cylinder and double acting, giving nearly twice as much pressure 

 from the labor of one man as a small hand pump. They should 

 be fitted with a pressure gauge and mounted on a tank having a 

 capacity of from 150 to 250 gallons which is supplied with an agi- 

 tator. Either one or two men can pump, and the pressure may be 

 easily kept at 1 50 pounds. This style of outfit can be bought for 

 from $40.00 to $64.00, exclusive of the running gear, and is recom- 

 mended for those who have not sufficient spraying to justify the 

 purchase of a power outfit. 



Geared sprayers. There are a large number of special outfits, 

 the power for which is supplied by a geared drivewheel. These 

 outfits are especially useful in spraying vineyards and low-growing 

 crops like potatoes, bush fruits, strawberries, and even small trees. 

 They usually carry a set of nozzles so arranged as to dispense with 

 the use of a man at the spray lance. It is not wise to attempt to 

 spray trees over four or five years old with this type of sprayer, 

 since the pressure will not be maintained long enough to spray 

 thoroughly. The grower should exercise caution in the selection 

 of a pump of this type, since some of these outfits are of too flimsy 

 construction to be durable. The usual cost of a geared sprayer is 

 from $150.00 to $250.00. 



Gasoline sprayers. The most satisfactory outfit for extensive 

 spraying is the modern gasoline-power sprayer. The high and uni- 

 form pressure at which these pumps may be held (150 pounds 

 or more to the square inch) gives a uniformly strong delivery and 

 enables the workmen to spray rapidly and effectively. One of the 



