478 



INJURIOUS AND BENEFICIAL INSECTS OP CALIFORNIA. 



the great essentials in spraying work, can only be had with a good 

 power machine. Such a machine is shown in Pig. 476 and is able to 

 supply two or four leads of hose with an adequate pressure. Orchard- 

 ists owning only small orchards are clubbing together and buying a 



power sprayer for several orchards and 

 find this a convenient way of getting 

 first-class work done cheaply. 



For truck crops an entirely different 

 machine has been devised. Some growers 

 have mounted the ordinary power pumps 

 upon a satisfactory wagon and have 

 made attachments for spraying rows. A 

 geared sprayer, such as shown in Fig. 

 481, is certainly a most commendable 

 machine, making it possible to spray 

 rapidly, thoroughly and with little cost 

 of operation. Such a pump is recom- 

 mended for spraying potatoes, tomatoes. 

 corn, peas or any other crops sown in 

 rows or broadcast. 



Blowers. — For the application of dust 

 sprays, hand and power machines are 

 manufactured. With the blower shown 

 in Fig. 475 it is possible to cover from 

 twenty to sixty acres in a single day, 

 thus reducing the cost of application to 

 a very small amount. 

 Fig. 477. — a good hand pump Pressure. — With a good pump there 

 ot'Lll^ouiiXilseT^o^t^l will be little difficulty in maintaining 

 best results. (After Bean Spray sufficient pressure, which is a great COn- 

 Pump Company) ., . *\ , . ' . i j -j 



sideration in doing thorough and rapid 

 work. For general spraying the pressure should not fall below 150 

 pounds, while 200 pounds is still better. Such pressure enables the 

 operator to reach 

 every part of the 

 tree or plant in a 

 very short time. 



Nozzle s. — At 

 present there are 

 many names ap- 

 plied to different 

 types and styles of 



nozzles, but there Fig. 47S. — Cyclone spray nozzles, a, small side nozzle for 



„„. nnlv twn tvnp« spraying trees and plants infested with red spiders or mites; 



die viiiy uvvu i^ypes ^ angle, and c, straight "Jumbo" nozzles, excellent for gen- 



extensively SOld. eral work. (After Bean Spray Pump Company) 



Many growers, however, use a single type for all kinds of spraying work. 

 The cyclone type (Fig. 478) includes the large styles known by such 

 trade names as "Jumbo," "Whirlpool," "Mistry Jr.," "Friend," etc. 

 All of these nozzles can be adjusted to meet the needs of different 

 kinds of work by simply changing the disc, enlarging or reducing the 

 size of the hole and also the quantity of spray delivered. 



