330 



The Principles of Fruit-growing 



spraying strawberries and potatoes is seen in Fig. 127. It 

 is a barrel- pump, mounted on wheels, with three nozzles 



rigged on the tail- 

 board, so as to cover 

 as many rows of 

 plants. 



There are dust- 

 sprayers on the mar- 

 ket, that apply the 

 material in a dry powder 

 rather than in water; but, 

 while they have given satis- 

 faction for particular pur- 

 poses, they have not become 



126. A convenient spraying equipment popular for Orchard WOrk. 

 for home grounds. 5i j r J //- 



Blodgett found (Cornell 



Bull. No. 340, 1914) that dust-spraying needs to be 

 further tried as a means of controlling apple diseases. 

 (Fig. 128.) "The use of finely ground sulfur as the 

 fungicide in a dust mixture has given very encouraging 

 results, and warrants further trials on a more exten- 

 sive scale. The application of arsenate of lead in powdered 

 form in the quantities applied is more effective against 

 the common orchard insects that chew 

 than is the same substance applied 

 wet. The time required for dusting 

 an orchard is much less 

 than that required for 

 spraying it." The cost 

 of controlling insects and 

 fungi is not lessened. 

 Melander and Beattie 



,__ . _ -_ .,.._, FIG. 127. One-horse outfit for spraying 

 (Wash. Bull. -NO. lOb) strawberries and potatoes. 



