CHAPTER XXI 
ACCESSORIES 
Nozzles 
NOZZLEs, as now designed, have reached a point of greater efficiency 
than was the case a few years ago. On small hand outfits, adapted 
for the kitchen garden, the question of nozzle is not so important. It 
is neither possible nor necessary to get up heavy pressure with these 
outfits, and the amount of work to be done is comparatively light. 
But in orchard spraying, particularly on a large scale, the nozzle may 
greatly help or hinder rapid and satisfactory work. 
The so-called Bordeaux nozzle is one of the older types still in use 
on light hand outfits. It has an adjustable opening, which may be 
arranged so as to throw a semisolid, fan-shaped stream, or a fairly 
fine spray. This nozzle is entirely unsuited to orchard work on any 
considerable scale, but is well liked for vineyard or field spraying be- 
cause the nozzle can quickly be cleaned by reversing the core. 
The vermorel nozzle has a central orifice, back of which is usually some 
particular type of chamber. As originally designed, the entire nozzle 
was small, and the central opening decidedly so. It invariably clogged 
up in short order, and hence was, and is, made with some sort of needle 
built into the central line of the nozzle, and so arranged that this 
needle can be forced forward to clear the orifice. The nozzle gives a 
fine, mist spray. Its defects are its intolerable tendency to clog and the 
fact that it can deliver only a small quantity of spray material; in 
other words, it is of low capacity. However, on light hand outfits, 
it is in general use and is fairly satisfactory. 
The modern disk nozzle was evolved from the vermorel. It differs 
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