79 



to iiliicc. A good pressure is obtained by 

 thesi' ijumps, and agitation has to be done 

 by stirring the wash with a stick. 



Syringes. — In very small gardens a 

 syringe is used successfully for washing 

 roses and other plants of Aphides, but for 

 any serious worlv it is quite useless because 

 of the coarse nature of the spray, low 

 pressure, and wastage of wash. 



Nozzles. 

 These are one of the most important 

 parts to insure successful spraying, and 

 the choice of the wrong nozzle is a fre- 

 quent cause of failure. It must bo 

 remembered that " Winter Washing " 

 means what it says, and a jet of wash is 

 necessary thoroughly to clear the bark of 

 the tree so as to get rid of lichens that 

 harbour insect life and disease spores, but 



be cone-shaped, and not flat across the 

 top, otherwise too wide a spread of spray 

 is obtained. 



Lead Arsenate Nozzles. — This kind 

 should be easily cleaned by a self-cleaning 

 pin, which is pushed through a medium- 

 sized ejector hole, when blocked by 

 particles, such is the Vermorel nozzle. 



Fungicide Nozzles. — These should give 

 a spray resembling a Scotch mist, in order 

 to get an even distribution of wash all 

 over the plant, except in using Bordeaux 

 or coarse washes, when one must use a 



Bordeaux Nozzle. — An easily cleaned 

 nozzle by turning stop-cock right round to 

 blow out any stoppage, and a fan-like 

 spray obtained by turning the tap round. 



Liming Nozzles. — For lime wash spray- 

 ing a coarse jet which is self-cleaning is 



(1) 



TypM ol Spray Noiilts. 



(I) A type suitable (or liine-«ulphur. When used with large openings and high pressure it wil) not 



(_2-) \ spray nozzle fitted with disgorping needle 



(3) A two-spray nozzle. One aide gives a broad, fine, fan-shaped sprav, and throws as much or as little 

 lifluid as desired, and the other t'lvts a lontr distance snrav. 



spring and summer sprays need finer dis- 

 tribution, and may be applied in two or 

 three ways. 



Double and Triple Jets. — These are not 

 economical in any way, and so much wash 

 is wasted either through the nozzles being 

 set wrongly and causing a crossing of the 

 cones, or through too great an area 

 being covered in the case of jets which 

 issue at a wide angle. 



A Medium-sized Cone fitted with self- 

 cleaning pin is required for lead arsenate 

 and other stomach poisons; a penetrating 

 and concentrated jet for contact washes, 

 and a fine, mist-like spray for applying 

 fungicides. 



Aphis Nozzles.— This class should give 

 a penetrating spray, and the nozzle should 



required (it need not be adjustable); the 

 make of nozzle best suited is one that is 

 cleared simply by tapping the end of the 

 nozzle against the trunk or a branch, when 

 the ejector pin will clear the obstruction. 

 Angle Bends.— If the nozzles are not 

 swivel-mounted, one must have an angle 

 bend attachment to fit the nozzles on, for 

 without this adjuster the under surface of 

 leaves cannot be successfully sprayed. 



L.^NCES. 



These are indispensable in spraying tall 

 trees of any kind, for without them the 

 leaves and branches cannot be reached. 



The usual method is to have bamboo 

 poles of from 6-15ft. long, through which 

 runs a brass tube. 



