168 



PEACH LEAF CUEL: ITS NATURE AND TREATMENT. 



Fig. 1.— Cytliine nozzle, 

 with, direct disc-harge 

 and degurger, for thin 

 sprays. 



hardware dealci- in the United States. The San Jose nozzle is also 

 obtainable through hardware dealers generally. 



There are many types and stjdes of cyclone nozzles. Some are planned 

 to throw the spray away from the workman, with direct or forward 



discharge (fig. 1). Others are so constructed that the 

 spray is discharged laterally or at a more or less 

 acute angle (figs. 2 and 3). In using these nozzles 

 for winter work on deciduous trees it has been found 

 that most thorough and most satisfactory work can 

 be done with less waste of spray when nozzles having 

 a lateral discharge are employed. The reasons for 

 this are evident. Dormant deciduous trees are but 

 a skeleton or framework, presenting to the sprayer 

 but a limited surface for stopping a direct spray. 

 For this reason, where a nozzle hay- 

 ing a direct discharge is employed, a 

 large portion of the spray will of 

 necessity pass through the limbs of the tree and fall upon 

 the ground, while at best it will pass through the tree but 

 once. By using the cyclone nozzle with lateral discharge, 

 however, the cone of spray may he directed upward 

 through the whole top, and in falling back it-passes through 

 the tree a second time. Here is a decided gain in the 

 linil) surface which will be reached by the use of a given 

 amount of spray. The nozzle having lateral discharge 

 can also be handled to much greater advantage than the 

 nozzle with direct discharge. By turning the extension 

 pipe which bears the nozzle, the cone of spray may be 



directed upward, downward, or laterally upon 

 the limbs as desired. This has proven of great 

 advantage in doing thorough work. 



The ordinary lateral discharge cyclone nozzles 

 lire suitable for use with most of the copper 

 sprays. For use with the sulphur sprays or 

 Bordeaux mixture containing a large amount of 

 lime, the common Vermorel or cyclone nozzle is 

 rather too light and the opening too small. In 

 California a special form of nozzle is in use for 

 the application of such sprays (fig. 3). This nozzle 

 is mamifacturcd in San Francisco, and may be 

 obtained from the leading hardware firms of that 

 city. The nozzle is of the cyclone pattern, but is much larger, heavier, 

 and stronger than the ordinary type of cyclone or Vermorel. The dis- 

 charge opening is of sufficient size to allow of the use of thick sprays, 

 and the discharge plate is heavy enough to withstand much wear from 

 corrosive fluids. A fact of prime importance, however, for the work 



Fig. 2. — Cyclone 

 nozzle, with 

 lateral dis- 

 charge, .for 

 thin sprays. 



Fig. 3.— Heavy cyclone noz- 

 zle, with oblique discharge, 

 for thick sprays. 



