INSECTICIDES AND FUNGICIDES 197 



keep the pressure uniform; one that will, with comparative ease, 

 keep, with two leads of hose in operation, a jn-essure of at least 

 one hundred and fifty pounds. 



3. As the principal ingredient in many of the insecticides and 

 fungicides is the fine materials held in suspension, there must 

 be perfect agitators, that will keep the liquid in constant motion. 



4. The nozzle must be the best that is suited to the occasion. 

 The nozzles of the "Bordeaux" type are not very satisfactory^ 

 in ordinary usage. The ''Vermorel" gives an excellent tine 

 spray, but often it is misty too soon after leaving the nozzle. 

 The larger types of nozzles, like the ''Mistry," ape more 

 satisfactory for much of the orchard spraying. 



5. Another very important point in spraying is to have a good 

 hose. Often a poor or worn-out hose causes more trouble than 

 all the rest of the apparatus put together. Good hose bands, to 

 hold the hose on the couplings, and long hose-couplings, are 

 essential. A short hose-coupling is often more trouble than it is 

 worth. 



6. Bamboo extension rods, with cut-offs at the lower ends, are 

 necessary in orchard spraying. The rod inside the bamboo is 

 made either of iron, brass or aluminum. The latter are lighter 

 to handle, and when properly made are excellent. Extension 

 rods can be obtained from eight to fourteen feet long, but it is 

 not often advisable, in this State, to purchase one over ten feet. 



7. A necessity, when spraying compounds are used, is a good 

 strainer. A fine-mesh brass screen, set at an angle in the frame 

 of a box, is the simplest and best. 



