SPRAYING AND DUSTING APPARATUS 



75 



45-degree elbow 

 for attaching 

 nozzles to end 

 of rod for 

 orchard spray- 

 ing. 



with a shut-off or stopcock at the lower end, so that the stream 



may be cut off when moving from tree to tree and the pressure 



maintained. These are light and easily handled, but the bamboo 



and connections frequently break, so that many 



prefer using a straight piece of three-eighths or 



one-half inch galvanized-iron pipe, threaded for 



the nozzle and stopcock. Wooden handle-grips, 



or grips made of burlap, may be wired around the 



pipe, so that it will be easier to hold. Ten feet 



is a good length. 



The nozzle should be attached to the rod 

 by a 45-degree connection, so that it points at 

 that angle. This enables one to spray directly over the topmost 

 branches and under the lower ones, making* the work much easier 



and more effective than 

 where the nozzle is attached 

 straight. 



In spraying low-grow- 

 ing crops, such as melons, 

 beans, etc., upon which it 

 is desirable to spray the 

 under surface of the foliage, 

 a short pipe about 3 feet 

 long is usually used, with 

 the nozzle attached to it 

 by an L, so that the noz- 

 zle is at right angles to 

 the pipe and will spray the 

 under surface. 



Hose. Use the best 



FIG. 46. Spraying squash with underspray 



four-ply one-half-inch hose 



nozzle at right angle to rod. 



for barrel or power sprayers and three-eighths-inch for bucket or 

 'knapsack sprayers. For barrel or power sprayers use couplings 

 with double-length shanks which will permit the use of two clamps 

 or bands on either side of the union. Wire bands for attaching 

 hose to pump or nozzle are unsatisfactory and should be avoided. 



