352 CONTROLLING INSECTS AND DISEASES 



TABLE 42 



Quantity of Dust to Use at Each Application 



Amount per Tree, Pounds 



Crop 



1 to 5 

 Years 



5 to 10 

 Years 



10 to 15 

 Years 



15 to 20 



Years 



20 Years 

 and Above 





Vs 



Kto 3^ 



1 



13^ to 2 



2 to 3 











1 



1 to \¥2 



Peaches 



^8 



Htoy2 



V2 



¥2 



¥2 



Pears 



Vs 



Mto 



¥2^0% 



1 



1 



Plums and Prunes. . 





H 



¥2 to % 



1 



1 



Quinces 



/4 





%to ¥ 



¥2 



¥2 



(d) Caring for Machinery and Equipment, During the 

 operating season keep all working parts thoroughly lubricated. 

 Seek to anticipate difficulties and make adjustments before 

 trouble really occurs. Put all liquids carrying materials in 

 suspension through a strainer in the top of the spray tank; 

 wash all materials in powder form through the strainer, to 

 prevent the entrance of substances that may clog the valves or 

 nozzles. 



At the close of each day of work, put the suction hose from 

 the pump into clean water and flush the pump, hose, and noz- 

 zles until only clear water comes from them. The equipment 

 will thus be freed of corrosive materials and will be ready for 

 the next day's work. 



Drag the hose over the ground as little as possible, except 

 when actually spraying. Disconnect it at the machine when 

 going to refill, or coil upon hangers at the end of the machine. 

 Do not permit kinks to form in it, as these injure the fabric. 



When the spraying season is over, flush thoroughly, with 

 clean water, all parts through which the spray materials move. 

 Drain the pump, engine, and tank. Ruia some used lubricating 

 oil through the pump to prevent rusting during winter. Store 



